July 2012 - Test - lists.nanog.org

FW: job screening question
by Keith Medcalf 08 Jul '12

08 Jul '12

(now copied to list as well) On Sat 07 July, 2012 at 20:32, Owen DeLong wrote: >>> "What TCP destination port numbers should be allowed through the >>> perimeter stateful firewall device to and from a mail server whose >>> only purpose is to proxy SMTP mail from internal sources?" >>> (one number answer) >> Short Answer: There is no answer to the question that can be expressed in >> one number. > Sure there is, if you count "none" as a number. None, NIL, NUL, NULL would be valid I suppose if nulls were permitted. 0 however is not correct. >> Outbound connections to TCP destination port 25 only. Returning traffic >> (including associated ICMP) should be automatically handled by your stateful >> inspection firewall. If not, you need to buy a better firewall. > I'd allow 25 and 465 outbound, myself. No reason to block SSL if the remote > side offers the capability. http://www.imc.org/ietf-apps-tls/mail-archive/msg00204.html SMTPS is deprecated and port 465 is no longer registered for SMTPS (SMTP over SSL), it is now for <record> <name>urd</name> <protocol>tcp</protocol> <description>URL Rendesvous Directory for SSM</description> <number>465</number> </record> So even though many folks may still run SMTPS on port 465, you SHOULD be using STARTTLS on port 25. > ICMP wouldn't be a TCP destination port number anyway. Very true. The again, there is a significant proportion of the same experts who think DNS only runs over UDP ... > > Any applicant who provides any answer should the rejected out of hand as > (a) being unable to read (b) being a threat to security. > LoL... Some truth to that. You would be surprised how many people think that if you permit tcp host x.x.x.x any eq 25 to let traffic out, then you need permit tcp any eq 25 host x.x.x.x as the inverse to permit returning traffic. This is more of a problem when using packet filtering than it is when configuring stateful inspection firewalls. Nonetheless, the question does ask what should be opened "to and from" in order to "proxy SMTP mail from internal sources". It could of course just be a brilliant question designed to detect such problems ... > Owen Keith --- () ascii ribbon campaign against html e-mail /\ www.asciiribbon.org

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July DNS
by NIG NOG 08 Jul '12

08 Jul '12

The guard’s face reddened again, and the veins in his thick neck stood out. “I said take offyour pants, faggot!You can’t hide your tiny little cock any more!” Chris jumped back, startled, and James began to chuckle. Chris could feel a slow heat rising up from his neck. I’ll show this guy. “You asked for it, asshole!” Chris grabbed his suspenders and tore them off his shoulders, letting the baggy black pants drop around his ankles. Before the guard could say anything, Chris grabbed the waistband of the sweats with one hand, and plunged the other in to wrap under the massive girth of his anaconda. He put his hand under the middle of his shaft, and twisted his whole body as he pulled upward, wriggling his nineteen inch limp cock out of his pants. He lifted it as best he could, and struggling, freed both of his huge, heavy balls from the sweats as well. Swinging free, the sheer weight threatened to almost throw him off balance, and Chris staggered around the room a bit, further unbalanced by the pants around his ankles. Chris clapped both hands on his thick cock and lifted it upward, waving it at the guard. “There! Here’s my tiny dick that I was hiding! See how little it is! I’m sooo ashamed of having a tiny penis! If only I could be big like you, Officer James!” Chris swung his huge prick from side to side, reveling in the weight of his cock and balls. The guard stood stock still, eyes wide with amazement. He turned bright red, from his collar to the tops of his ears. He started to stammer. “S-s-sir.. I’m really…I apologize…it was my mistake. I..” Chris cut him off, still holding his huge meat in both hands. “It’s damn right it was your mistake! Your mistake messing with the biggest fucking dick on the planet! You’re lucky I don’t beat you senseless with my huge cock!” Chris could feel the blood surging into his prick, and felt it beginning to swell and thicken in his hands. Yeah! Thought youwere the big boy, did you! Wait till you see how big this boy gets! Suddenly, Tracy’s voice came through the door. “James! What is going on in there?!? You’re just supposed to escort him to the office! Are you OK, sir? I’m coming in.” Chris heard her keys rattling at the lock.

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RE: FYI Netflix is down
by Ryan Malayter 07 Jul '12

07 Jul '12

James Downs wrote: > For Netflix (and all other similar > services) downtime is money and money is downtime. There is a > quantifiable cost for customer acquisition and a quantifiable churn > during each minute of downtime. Mature organizations actually calculate > and track this. The trick is to ensure that you have balanced the cost > of greater redundancy vs the cost of churn/customer acquisition. If you > are spending too much on redundancy, it's as big of mistake as spending > too little. Actually, for Netflix, so long as downtime is infrequent or short enough that users don't cancel, it actually saves them money. They're not paying royalties for movies being streamed during downtime, but they're still collecting their $8/month. There is no meaningful SLA for the end user to my knowledge. I imagine the threshold for *any* user churn based on downtime is very high for Netflix. So long as they are "about as good as cable/sattelite TV" in terms of uptime Netflix will do fine. You would have to get into 98% uptime or lower before people would really start getting irritated enough to cancel. Of course multiple short outages would be more painful than a few longer ones from a customer's perspective. I imagine Netflix is mature enough to track this data as you suggest, and that's why they use AWS - downtime isn't a big deal for their business unless it gets really, really bad.

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Re: [outages] www.dns-ok.us down
by Jay Ashworth 06 Jul '12

06 Jul '12

So... might large and medium ISPs not redirect DNS to those known addresses to a resolver in house, which would log the client IPs and let them know whom to address? Cheers, -- jra ----- Original Message ----- > From: "Eric J Esslinger" <eesslinger(a)fpu-tn.com> > To: "outages(a)outages.org" <outages(a)outages.org> > Sent: Friday, July 6, 2012 12:39:56 PM > Subject: [outages] www.dns-ok.us down > As per subject, the DNS Changer Working Group (DCWG) site for the US > is down atm. Also another very probably related issue; Foxnews, CNN, > and MSNBC have all apparantly run stories in the last few hours about > how the internet end is nigh, everyone is infected, and if you have > any questions call your isp. (Hype levels varied per channel, I'm told > as well). > > __________________________ > Eric Esslinger > Information Services Manager - Fayetteville Public Utilities > http://www.fpu-tn.com/ > (931)433-1522 ext 165 > > This message may contain confidential and/or proprietary information > and is intended for the person/entity to whom it was originally > addressed. Any use by others is strictly prohibited. > > _______________________________________________ > Outages mailing list > Outages(a)outages.org > https://puck.nether.net/mailman/listinfo/outages -- Jay R. Ashworth Baylink jra(a)baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274

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BGP Update Report
by cidr-report＠potaroo.net 06 Jul '12

06 Jul '12

BGP Update Report Interval: 28-Jun-12 -to- 05-Jul-12 (7 days) Observation Point: BGP Peering with AS131072 TOP 20 Unstable Origin AS Rank ASN Upds % Upds/Pfx AS-Name 1 - AS2118 145948 5.2% 113.3 -- RELCOM-AS OOO "NPO Relcom" 2 - AS5800 107625 3.9% 406.1 -- DNIC-ASBLK-05800-06055 - DoD Network Information Center 3 - AS8402 61836 2.2% 33.3 -- CORBINA-AS OJSC "Vimpelcom" 4 - AS9829 50381 1.8% 38.6 -- BSNL-NIB National Internet Backbone 5 - AS27065 37861 1.4% 289.0 -- DNIC-ASBLK-27032-27159 - DoD Network Information Center 6 - AS1502 29933 1.1% 348.1 -- DNIC-ASBLK-01500-01502 - Headquarters, USAISC 7 - AS12479 28588 1.0% 36.4 -- UNI2-AS France Telecom Espana SA 8 - AS24560 27947 1.0% 27.0 -- AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services 9 - AS14420 23956 0.9% 43.2 -- CORPORACION NACIONAL DE TELECOMUNICACIONES - CNT EP 10 - AS6713 23007 0.8% 45.6 -- IAM-AS 11 - AS17813 22881 0.8% 168.2 -- MTNL-AP Mahanagar Telephone Nigam Ltd. 12 - AS5803 21563 0.8% 378.3 -- DNIC-ASBLK-05800-06055 - DoD Network Information Center 13 - AS27096 19228 0.7% 1373.4 -- DNIC-ASBLK-27032-27159 - DoD Network Information Center 14 - AS27738 18258 0.7% 33.2 -- Ecuadortelecom S.A. 15 - AS6035 18008 0.7% 375.2 -- DNIC-ASBLK-05800-06055 - DoD Network Information Center 16 - AS28573 17906 0.6% 8.6 -- NET Servicos de Comunicao S.A. 17 - AS13118 17647 0.6% 367.6 -- ASN-YARTELECOM OJSC Rostelecom 18 - AS11664 16311 0.6% 60.6 -- Techtel LMDS Comunicaciones Interactivas S.A. 19 - AS20115 15357 0.6% 9.3 -- CHARTER-NET-HKY-NC - Charter Communications 20 - AS6034 14940 0.5% 383.1 -- DNIC-ASBLK-05800-06055 - DoD Network Information Center TOP 20 Unstable Origin AS (Updates per announced prefix) Rank ASN Upds % Upds/Pfx AS-Name 1 - AS30812 6712 0.2% 3356.0 -- MARSU-AS State Educational Institution of Higher Professional Education Mari State University 2 - AS3 3259 0.1% 1960.0 -- RU-RN-INFORM-NOGLIKI Limited Liability Company "RN-Inform" 3 - AS27096 19228 0.7% 1373.4 -- DNIC-ASBLK-27032-27159 - DoD Network Information Center 4 - AS45734 9312 0.3% 1164.0 -- MAS-AS-ID PT. Media Akses Solusindo 5 - AS16535 2640 0.1% 880.0 -- ECHOS-3 - Echostar Holding Purchasing Corporation 6 - AS42806 873 0.0% 873.0 -- TELECOM-AS Telecom Georgia 7 - AS29126 820 0.0% 820.0 -- DATIQ-AS Datiq B.V. 8 - AS55665 790 0.0% 790.0 -- STMI-AS-ID PT Sampoerna Telemedia Indonesia 9 - AS3 717 0.0% 2225.0 -- RU-RN-INFORM-NOGLIKI Limited Liability Company "RN-Inform" 10 - AS38278 1275 0.1% 637.5 -- VTELECOMNET-MY-AP VTelecoms Berhad - Metro Ethernet LL and Internet Service Provider, Malaysia 11 - AS29644 1832 0.1% 610.7 -- AIRSPEED-AS AirSpeed Communications Ltd. 12 - AS58420 564 0.0% 564.0 -- TNET-DHK-BD M/S T Network, ISP of Bangladesh 13 - AS45286 556 0.0% 556.0 -- EDIINDONESIA-AS-ID PT EDI INDONESIA 14 - AS45905 1999 0.1% 499.8 -- X-LINK-LIMITED-BD 52/1, Hasan Holding, 3rd Floor 15 - AS38030 1422 0.1% 474.0 -- ALAP-AS-BD ALAP COMMUNICATION LTD. DOMESTIC DATA CONNECTIVITY SERVICE & 16 - AS45766 462 0.0% 462.0 -- TRIANGLESERVICES Triangle Services Ltd. 17 - AS28306 14770 0.5% 434.4 -- TC Net Informática e Telecomunicações LTDA 18 - AS38272 432 0.0% 432.0 -- SONARGAONONLINE-BD-AS-AP Sonargaon Online Services 19 - AS13548 423 0.0% 423.0 -- CHARLESTON-AS - College of Charleston 20 - AS27067 1673 0.1% 418.2 -- DNIC-ASBLK-27032-27159 - DoD Network Information Center TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 109.161.64.0/19 17298 0.6% AS13118 -- ASN-YARTELECOM OJSC Rostelecom 2 - 182.64.0.0/16 10687 0.4% AS24560 -- AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services 3 - 62.36.252.0/22 8222 0.3% AS12479 -- UNI2-AS France Telecom Espana SA 4 - 62.36.249.0/24 6602 0.2% AS12479 -- UNI2-AS France Telecom Espana SA 5 - 122.161.0.0/16 6351 0.2% AS24560 -- AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services 6 - 62.36.241.0/24 6229 0.2% AS12479 -- UNI2-AS France Telecom Espana SA 7 - 202.56.215.0/24 6176 0.2% AS24560 -- AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services 8 - 62.36.210.0/24 6045 0.2% AS12479 -- UNI2-AS France Telecom Espana SA 9 - 59.177.48.0/20 5994 0.2% AS17813 -- MTNL-AP Mahanagar Telephone Nigam Ltd. 10 - 194.63.9.0/24 5142 0.2% AS1273 -- CW Cable and Wireless Worldwide plc 11 - 69.38.178.0/24 4475 0.1% AS19406 -- TWRS-MA - Towerstream I, Inc. 12 - 62.76.150.0/24 3357 0.1% AS30812 -- MARSU-AS State Educational Institution of Higher Professional Education Mari State University 13 - 62.76.148.0/23 3355 0.1% AS30812 -- MARSU-AS State Educational Institution of Higher Professional Education Mari State University 14 - 59.177.144.0/20 3344 0.1% AS17813 -- MTNL-AP Mahanagar Telephone Nigam Ltd. 15 - 41.43.147.0/24 3341 0.1% AS8452 -- TE-AS TE-AS 16 - 193.235.148.0/22 3259 0.1% AS3 -- RU-RN-INFORM-NOGLIKI Limited Liability Company "RN-Inform" 17 - 59.177.64.0/18 3139 0.1% AS17813 -- MTNL-AP Mahanagar Telephone Nigam Ltd. 18 - 220.196.26.0/24 2822 0.1% AS17621 -- CNCGROUP-SH China Unicom Shanghai network 19 - 152.121.181.0/24 2766 0.1% AS27030 -- USCG-AS - United States Coast Guard 20 - 67.47.194.0/23 2637 0.1% AS16535 -- ECHOS-3 - Echostar Holding Purchasing Corporation Details at http://bgpupdates.potaroo.net ------------------------------------ Copies of this report are mailed to: nanog(a)nanog.org eof-list(a)ripe.net apops(a)apops.net routing-wg(a)ripe.net afnog(a)afnog.org

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The Cidr Report
by cidr-report＠potaroo.net 06 Jul '12

06 Jul '12

This report has been generated at Fri Jul 6 21:12:59 2012 AEST. The report analyses the BGP Routing Table of AS2.0 router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org for a current version of this report. Recent Table History Date Prefixes CIDR Agg 29-06-12 417364 242261 30-06-12 417376 242216 01-07-12 417290 242354 02-07-12 417365 242609 03-07-12 417797 242417 04-07-12 418052 242290 05-07-12 417636 242405 06-07-12 418603 242676 AS Summary 41592 Number of ASes in routing system 17374 Number of ASes announcing only one prefix 3392 Largest number of prefixes announced by an AS AS6389 : BELLSOUTH-NET-BLK - BellSouth.net Inc. 113090528 Largest address span announced by an AS (/32s) AS4134 : CHINANET-BACKBONE No.31,Jin-rong Street Aggregation Summary The algorithm used in this report proposes aggregation only when there is a precise match using the AS path, so as to preserve traffic transit policies. Aggregation is also proposed across non-advertised address space ('holes'). --- 06Jul12 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 418725 242599 176126 42.1% All ASes AS6389 3392 191 3201 94.4% BELLSOUTH-NET-BLK - BellSouth.net Inc. AS7029 3281 1631 1650 50.3% WINDSTREAM - Windstream Communications Inc AS22773 1656 136 1520 91.8% ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc. AS4766 2694 1240 1454 54.0% KIXS-AS-KR Korea Telecom AS17974 2146 762 1384 64.5% TELKOMNET-AS2-AP PT Telekomunikasi Indonesia AS18566 2088 706 1382 66.2% COVAD - Covad Communications Co. AS28573 1989 621 1368 68.8% NET Servicos de Comunicao S.A. AS2118 1288 15 1273 98.8% RELCOM-AS OOO "NPO Relcom" AS4323 1576 386 1190 75.5% TWTC - tw telecom holdings, inc. AS1785 1932 813 1119 57.9% AS-PAETEC-NET - PaeTec Communications, Inc. AS10620 1983 884 1099 55.4% Telmex Colombia S.A. AS4755 1612 561 1051 65.2% TATACOMM-AS TATA Communications formerly VSNL is Leading ISP AS7303 1453 458 995 68.5% Telecom Argentina S.A. AS7552 1124 234 890 79.2% VIETEL-AS-AP Vietel Corporation AS8151 1498 686 812 54.2% Uninet S.A. de C.V. AS18101 946 160 786 83.1% RELIANCE-COMMUNICATIONS-IN Reliance Communications Ltd.DAKC MUMBAI AS17908 827 60 767 92.7% TCISL Tata Communications AS4808 1100 352 748 68.0% CHINA169-BJ CNCGROUP IP network China169 Beijing Province Network AS9394 887 162 725 81.7% CRNET CHINA RAILWAY Internet(CRNET) AS13977 839 123 716 85.3% CTELCO - FAIRPOINT COMMUNICATIONS, INC. AS3356 1105 462 643 58.2% LEVEL3 Level 3 Communications AS855 694 57 637 91.8% CANET-ASN-4 - Bell Aliant Regional Communications, Inc. AS17676 692 75 617 89.2% GIGAINFRA Softbank BB Corp. AS4780 841 245 596 70.9% SEEDNET Digital United Inc. AS22561 1023 428 595 58.2% DIGITAL-TELEPORT - Digital Teleport Inc. AS19262 998 405 593 59.4% VZGNI-TRANSIT - Verizon Online LLC AS24560 1036 448 588 56.8% AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services AS8452 1222 665 557 45.6% TE-AS TE-AS AS3549 991 436 555 56.0% GBLX Global Crossing Ltd. AS4804 649 97 552 85.1% MPX-AS Microplex PTY LTD Total 43562 13499 30063 69.0% Top 30 total Possible Bogus Routes 10.86.64.32/30 AS65530 -Private Use AS- 10.86.64.36/30 AS65530 -Private Use AS- 10.86.65.32/30 AS65530 -Private Use AS- 10.86.65.36/30 AS65530 -Private Use AS- 10.255.255.0/30 AS65530 -Private Use AS- 10.255.255.4/30 AS65530 -Private Use AS- 10.255.255.8/30 AS65530 -Private Use AS- 14.192.0.0/22 AS45464 NEXTWEB-AS-AP Room 201, TGU Bldg 14.192.4.0/22 AS45464 NEXTWEB-AS-AP Room 201, TGU Bldg 14.192.8.0/22 AS45464 NEXTWEB-AS-AP Room 201, TGU Bldg 14.192.12.0/22 AS45464 NEXTWEB-AS-AP Room 201, TGU Bldg 14.192.16.0/22 AS45464 NEXTWEB-AS-AP Room 201, TGU Bldg 14.192.20.0/22 AS45464 NEXTWEB-AS-AP Room 201, TGU Bldg 14.192.24.0/22 AS45464 NEXTWEB-AS-AP Room 201, TGU Bldg 14.192.28.0/22 AS45464 NEXTWEB-AS-AP Room 201, TGU Bldg 27.112.114.0/24 AS23884 PROENNET-AS Proimage Engineering and Communication Co.,Ltd. 62.61.220.0/24 AS24974 TACHYON-EU Tachyon Europe BV 62.61.221.0/24 AS24974 TACHYON-EU Tachyon Europe BV 64.66.32.0/20 AS18864 66.171.32.0/20 AS705 UUNET - MCI Communications Services, Inc. d/b/a Verizon Business 66.180.239.0/24 AS35888 VIGNETTE - VIGNETTE CORPORATION 66.207.32.0/20 AS23011 66.245.176.0/20 AS19318 NJIIX-AS-1 - NEW JERSEY INTERNATIONAL INTERNET EXCHANGE LLC 66.251.128.0/24 AS33227 BLUEBRIDGE-NETWORKS - Blue Bridge Networks 66.251.133.0/24 AS33227 BLUEBRIDGE-NETWORKS - Blue Bridge Networks 66.251.134.0/24 AS33227 BLUEBRIDGE-NETWORKS - Blue Bridge Networks 66.251.136.0/21 AS33227 BLUEBRIDGE-NETWORKS - Blue Bridge Networks 66.251.140.0/24 AS33227 BLUEBRIDGE-NETWORKS - Blue Bridge Networks 66.251.141.0/24 AS33227 BLUEBRIDGE-NETWORKS - Blue Bridge Networks 66.251.142.0/24 AS33227 BLUEBRIDGE-NETWORKS - Blue Bridge Networks 66.251.143.0/24 AS3356 LEVEL3 Level 3 Communications 69.46.224.0/20 AS32592 HUNT-BROTHERS-OF-LOUISIANA-LLC - Hunt Brothers 69.46.233.0/24 AS32592 HUNT-BROTHERS-OF-LOUISIANA-LLC - Hunt Brothers 69.46.236.0/24 AS32592 HUNT-BROTHERS-OF-LOUISIANA-LLC - Hunt Brothers 70.34.112.0/20 AS27589 MOJOHOST - MOJOHOST 71.19.134.0/23 AS3313 INET-AS BT Italia S.p.A. 72.35.224.0/22 AS30097 NUWAVE - NuWave 72.35.229.0/24 AS30188 TELEVERGENCE - Televergence Solutions Inc. 72.35.232.0/21 AS30097 NUWAVE - NuWave 72.44.16.0/20 AS15054 HAMELTRONICS - Hameltronics, LLC 74.91.48.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.49.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.50.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.51.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.52.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.53.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.54.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.55.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.56.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.57.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.58.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.59.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.60.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.61.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.62.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.91.63.0/24 AS30137 SEA-BROADBAND - Sea Broadband, LLC 74.115.124.0/23 AS46540 74.115.126.0/24 AS11260 EASTLINK-HSI - EastLink 81.22.64.0/20 AS5511 OPENTRANSIT France Telecom S.A. 82.101.160.0/19 AS5511 OPENTRANSIT France Telecom S.A. 110.34.44.0/22 AS12653 COMTONET KB Impuls Hellas S.A. 116.206.72.0/24 AS6461 MFNX MFN - Metromedia Fiber Network 116.206.85.0/24 AS6461 MFNX MFN - Metromedia Fiber Network 116.206.103.0/24 AS6461 MFNX MFN - Metromedia Fiber Network 117.120.56.0/21 AS4755 TATACOMM-AS TATA Communications formerly VSNL is Leading ISP 120.136.17.0/24 AS38779 BMG-AS-ID Badan Meteorologi dan Geofisika 121.46.0.0/16 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street 142.54.0.0/19 AS23498 CDSI - Cogeco Data Services LP 172.14.0.0/24 AS57871 ASTELECENTR TeleCentr Ltd. 172.15.0.0/24 AS57871 ASTELECENTR TeleCentr Ltd. 172.45.1.0/24 AS3356 LEVEL3 Level 3 Communications 172.102.0.0/22 AS4812 CHINANET-SH-AP China Telecom (Group) 172.116.0.0/24 AS7018 ATT-INTERNET4 - AT&T Services, Inc. 198.18.0.0/15 AS14744 INTERNAP-BLOCK-4 - Internap Network Services Corporation 198.51.100.0/24 AS14744 INTERNAP-BLOCK-4 - Internap Network Services Corporation 200.1.112.0/24 AS29754 GO2TEL GO2TEL.COM INC. 200.6.49.0/24 AS23148 TERREMARK Terremark 200.24.73.0/24 AS26061 Equant Colombia 200.33.40.0/24 AS11172 Alestra, S. de R.L. de C.V. 200.34.0.0/20 AS6342 Instituto Tecnológico y de Estudios Superiores de Monterrey 200.53.0.0/19 AS13878 Diveo do Brasil Telecomunicacoes Ltda 200.58.248.0/21 AS27849 200.75.184.0/21 AS14754 Telgua 200.106.128.0/20 AS3257 TINET-BACKBONE Tinet SpA 200.115.112.0/20 AS3257 TINET-BACKBONE Tinet SpA 202.1.224.0/24 AS10097 FLOWCOM Flow Communications 2/541 Kent St Sydney NSW 2000 202.8.106.0/24 AS9530 SHINSEGAE-AS SHINSEGAE I&C Co., Ltd. 202.58.113.0/24 AS19161 202.83.120.0/21 AS37972 202.83.124.0/24 AS37972 202.83.125.0/24 AS37972 202.83.126.0/24 AS37972 202.94.1.0/24 AS4808 CHINA169-BJ CNCGROUP IP network China169 Beijing Province Network 202.140.128.0/19 AS9583 SIFY-AS-IN Sify Limited 202.174.125.0/24 AS9498 BBIL-AP BHARTI Airtel Ltd. 202.176.1.0/24 AS9942 COMINDICO-AP SOUL Converged Communications Australia 202.179.134.0/24 AS23966 LDN-AS-PK LINKdotNET Telecom Limited 203.0.113.0/24 AS14744 INTERNAP-BLOCK-4 - Internap Network Services Corporation 203.23.1.0/24 AS18111 NETSPEED-AS-AP Netspeed Internet Communications 203.24.38.0/24 AS18111 NETSPEED-AS-AP Netspeed Internet Communications 203.30.127.0/24 AS18111 NETSPEED-AS-AP Netspeed Internet Communications 203.32.86.0/23 AS18111 NETSPEED-AS-AP Netspeed Internet Communications 203.32.86.0/24 AS18111 NETSPEED-AS-AP Netspeed Internet Communications 203.32.87.0/24 AS18111 NETSPEED-AS-AP Netspeed Internet Communications 203.32.188.0/24 AS1221 ASN-TELSTRA Telstra Pty Ltd 203.142.219.0/24 AS45149 204.9.116.0/22 AS30097 NUWAVE - NuWave 204.10.88.0/21 AS3356 LEVEL3 Level 3 Communications 204.10.92.0/23 AS30097 NUWAVE - NuWave 204.10.94.0/23 AS30097 NUWAVE - NuWave 204.14.0.0/21 AS30693 EONIX-CORPORATION-AS-PHX01-WWW-INFINITIE-NET - Eonix Corporation 204.14.0.0/24 AS30693 EONIX-CORPORATION-AS-PHX01-WWW-INFINITIE-NET - Eonix Corporation 204.14.2.0/24 AS30693 EONIX-CORPORATION-AS-PHX01-WWW-INFINITIE-NET - Eonix Corporation 204.14.3.0/24 AS30693 EONIX-CORPORATION-AS-PHX01-WWW-INFINITIE-NET - Eonix Corporation 205.175.214.0/24 AS5583 ORANGE-BUSINESS-SERVICES-BENELUX France Telecom S.A. 206.197.184.0/24 AS23304 DATOTEL-STL-AS - Datotel LLC, a NetLabs LLC Company 207.174.131.0/24 AS26116 INDRA - Indra's Net Inc 207.174.132.0/23 AS26116 INDRA - Indra's Net Inc 207.174.152.0/23 AS26116 INDRA - Indra's Net Inc 207.174.154.0/24 AS26116 INDRA - Indra's Net Inc 207.174.155.0/24 AS26116 INDRA - Indra's Net Inc 207.174.200.0/24 AS22658 EARTHNET - Earthnet, Inc. 207.174.248.0/21 AS6653 PRIVATEI - privateI, LLC 207.231.96.0/19 AS11194 NUNETPA - NuNet Inc. 208.83.53.0/24 AS40569 YGOMI-AS - Ygomi LLC 208.93.144.0/21 AS30693 EONIX-CORPORATION-AS-PHX01-WWW-INFINITIE-NET - Eonix Corporation 208.93.151.0/24 AS30693 EONIX-CORPORATION-AS-PHX01-WWW-INFINITIE-NET - Eonix Corporation 209.148.64.0/19 AS13773 TELNETCOMM - Telnet Communications 209.177.64.0/20 AS6461 MFNX MFN - Metromedia Fiber Network 209.213.0.0/20 AS33005 ELTOPIA - Eltopia.com, LLC 213.150.202.0/24 AS8513 SKYVISION SkyVision Global Networks Ltd 213.150.204.0/24 AS29338 AFOL-AS Used by Africaonline Operations 216.12.160.0/20 AS26627 AS-PILOSOFT - Pilosoft, Inc. 216.21.160.0/20 AS27876 American Data Networks 216.155.176.0/20 AS16706 216.194.160.0/20 AS27876 American Data Networks Please see http://www.cidr-report.org for the full report ------------------------------------ Copies of this report are mailed to: nanog(a)nanog.org eof-list(a)ripe.net apops(a)apops.net routing-wg(a)ripe.net afnog(a)afnog.org

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Re: job screening question
by Scott Weeks 06 Jul '12

06 Jul '12

--- don(a)bowenvale.co.nz wrote: From: Don Gould <don(a)bowenvale.co.nz> I have 25 years IT experience... I've applied for a few jobs in my time... I thought to myself "I'll have a crack with a few comments!!!"... ....then I read down the next 30 posts and decided that perhaps I didn't really know enough about networking to really comment... <snip> But seriously guys, great thread with tons of really interesting stuff and a bunch of history. --------------------------------------------------- Sure as heck had me going to search engines to make sure I knew the answers... ;-) And, yes, it was an interesting thread. scott

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Weekly Routing Table Report
by Routing Analysis Role Account 06 Jul '12

06 Jul '12

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG, TRNOG, CaribNOG and the RIPE Routing Working Group. Daily listings are sent to bgp-stats(a)lists.apnic.net For historical data, please see http://thyme.rand.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. Routing Table Report 04:00 +10GMT Sat 07 Jul, 2012 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 416013 Prefixes after maximum aggregation: 175712 Deaggregation factor: 2.37 Unique aggregates announced to Internet: 202545 Total ASes present in the Internet Routing Table: 41442 Prefixes per ASN: 10.04 Origin-only ASes present in the Internet Routing Table: 33316 Origin ASes announcing only one prefix: 15667 Transit ASes present in the Internet Routing Table: 5555 Transit-only ASes present in the Internet Routing Table: 133 Average AS path length visible in the Internet Routing Table: 4.5 Max AS path length visible: 27 Max AS path prepend of ASN ( 51742) 24 Prefixes from unregistered ASNs in the Routing Table: 391 Unregistered ASNs in the Routing Table: 124 Number of 32-bit ASNs allocated by the RIRs: 2945 Number of 32-bit ASNs visible in the Routing Table: 2571 Prefixes from 32-bit ASNs in the Routing Table: 6623 Special use prefixes present in the Routing Table: 2 Prefixes being announced from unallocated address space: 166 Number of addresses announced to Internet: 2562615596 Equivalent to 152 /8s, 190 /16s and 105 /24s Percentage of available address space announced: 69.1 Percentage of allocated address space announced: 69.2 Percentage of available address space allocated: 99.9 Percentage of address space in use by end-sites: 93.1 Total number of prefixes smaller than registry allocations: 144059 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 101846 Total APNIC prefixes after maximum aggregation: 32701 APNIC Deaggregation factor: 3.11 Prefixes being announced from the APNIC address blocks: 102276 Unique aggregates announced from the APNIC address blocks: 42093 APNIC Region origin ASes present in the Internet Routing Table: 4713 APNIC Prefixes per ASN: 21.70 APNIC Region origin ASes announcing only one prefix: 1240 APNIC Region transit ASes present in the Internet Routing Table: 752 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 24 Number of APNIC region 32-bit ASNs visible in the Routing Table: 243 Number of APNIC addresses announced to Internet: 704055168 Equivalent to 41 /8s, 247 /16s and 7 /24s Percentage of available APNIC address space announced: 82.3 APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 131072-133119 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 152288 Total ARIN prefixes after maximum aggregation: 77420 ARIN Deaggregation factor: 1.97 Prefixes being announced from the ARIN address blocks: 153251 Unique aggregates announced from the ARIN address blocks: 68354 ARIN Region origin ASes present in the Internet Routing Table: 15188 ARIN Prefixes per ASN: 10.09 ARIN Region origin ASes announcing only one prefix: 5754 ARIN Region transit ASes present in the Internet Routing Table: 1599 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 17 Number of ARIN addresses announced to Internet: 1070644608 Equivalent to 63 /8s, 208 /16s and 189 /24s Percentage of available ARIN address space announced: 56.6 ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 393216-394239 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 103875 Total RIPE prefixes after maximum aggregation: 55073 RIPE Deaggregation factor: 1.89 Prefixes being announced from the RIPE address blocks: 106098 Unique aggregates announced from the RIPE address blocks: 67054 RIPE Region origin ASes present in the Internet Routing Table: 16647 RIPE Prefixes per ASN: 6.37 RIPE Region origin ASes announcing only one prefix: 8073 RIPE Region transit ASes present in the Internet Routing Table: 2689 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 27 Number of RIPE region 32-bit ASNs visible in the Routing Table: 1694 Number of RIPE addresses announced to Internet: 635393668 Equivalent to 37 /8s, 223 /16s and 86 /24s Percentage of available RIPE address space announced: 92.4 RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 196608-199679 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 41993 Total LACNIC prefixes after maximum aggregation: 8342 LACNIC Deaggregation factor: 5.03 Prefixes being announced from the LACNIC address blocks: 44613 Unique aggregates announced from the LACNIC address blocks: 21657 LACNIC Region origin ASes present in the Internet Routing Table: 1608 LACNIC Prefixes per ASN: 27.74 LACNIC Region origin ASes announcing only one prefix: 429 LACNIC Region transit ASes present in the Internet Routing Table: 310 Average LACNIC Region AS path length visible: 4.6 Max LACNIC Region AS path length visible: 25 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 612 Number of LACNIC addresses announced to Internet: 111736744 Equivalent to 6 /8s, 168 /16s and 247 /24s Percentage of available LACNIC address space announced: 66.6 LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 262144-263167 plus ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 9191 Total AfriNIC prefixes after maximum aggregation: 2121 AfriNIC Deaggregation factor: 4.33 Prefixes being announced from the AfriNIC address blocks: 9609 Unique aggregates announced from the AfriNIC address blocks: 3242 AfriNIC Region origin ASes present in the Internet Routing Table: 548 AfriNIC Prefixes per ASN: 17.53 AfriNIC Region origin ASes announcing only one prefix: 171 AfriNIC Region transit ASes present in the Internet Routing Table: 124 Average AfriNIC Region AS path length visible: 4.6 Max AfriNIC Region AS path length visible: 25 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5 Number of AfriNIC addresses announced to Internet: 40489728 Equivalent to 2 /8s, 105 /16s and 211 /24s Percentage of available AfriNIC address space announced: 40.2 AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 4766 2689 11116 1201 Korea Telecom (KIX) 17974 2146 558 79 PT TELEKOMUNIKASI INDONESIA 7545 1690 301 87 TPG Internet Pty Ltd 4755 1612 388 162 TATA Communications formerly 9829 1300 1085 28 BSNL National Internet Backbo 9583 1165 87 507 Sify Limited 7552 1124 1062 11 Vietel Corporation 4808 1100 2053 318 CNCGROUP IP network: China169 24560 1036 385 165 Bharti Airtel Ltd., Telemedia 9498 978 291 65 BHARTI Airtel Ltd. Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 6389 3392 3789 188 bellsouth.net, inc. 7029 3260 986 161 Windstream Communications Inc 18566 2089 382 182 Covad Communications 1785 1931 681 132 PaeTec Communications, Inc. 22773 1656 2911 121 Cox Communications, Inc. 20115 1651 1573 616 Charter Communications 4323 1575 1043 384 Time Warner Telecom 30036 1382 264 783 Mediacom Communications Corp 7018 1259 10029 824 AT&T WorldNet Services 11492 1190 216 356 Cable One Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8402 1628 544 16 Corbina telecom 2118 1288 97 14 EUnet/RELCOM Autonomous Syste 12479 781 731 91 Uni2 Autonomous System 34984 725 189 176 BILISIM TELEKOM 6830 711 2292 445 UPC Distribution Services 31148 695 37 9 FreeNet ISP 20940 685 220 527 Akamai Technologies European 8551 579 364 61 Bezeq International 13188 504 100 10 Educational Network 3320 496 8443 408 Deutsche Telekom AG Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 28573 1989 1214 55 NET Servicos de Comunicao S.A 10620 1983 345 204 TVCABLE BOGOTA 6503 1531 418 66 AVANTEL, S.A. 8151 1489 3065 342 UniNet S.A. de C.V. 7303 1453 933 193 Telecom Argentina Stet-France 27947 709 74 94 Telconet S.A 11172 643 91 74 Servicios Alestra S.A de C.V 3816 589 246 90 Empresa Nacional de Telecomun 22047 583 326 15 VTR PUNTO NET S.A. 14117 567 65 59 Telefonica del Sur S.A. Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 8452 1222 958 13 TEDATA 24863 864 274 32 LINKdotNET AS number 6713 504 649 18 Itissalat Al-MAGHRIB 24835 286 80 8 RAYA Telecom - Egypt 3741 262 905 223 The Internet Solution 33776 199 12 21 Starcomms Nigeria Limited 12258 197 28 62 Vodacom Internet Company 16637 167 664 87 MTN Network Solutions 29975 167 571 19 Vodacom 15706 159 32 6 Sudatel Internet Exchange Aut Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 6389 3392 3789 188 bellsouth.net, inc. 7029 3260 986 161 Windstream Communications Inc 4766 2689 11116 1201 Korea Telecom (KIX) 17974 2146 558 79 PT TELEKOMUNIKASI INDONESIA 18566 2089 382 182 Covad Communications 28573 1989 1214 55 NET Servicos de Comunicao S.A 10620 1983 345 204 TVCABLE BOGOTA 1785 1931 681 132 PaeTec Communications, Inc. 7545 1690 301 87 TPG Internet Pty Ltd 22773 1656 2911 121 Cox Communications, Inc. Complete listing at http://thyme.rand.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 7029 3260 3099 Windstream Communications Inc 17974 2146 2067 PT TELEKOMUNIKASI INDONESIA 28573 1989 1934 NET Servicos de Comunicao S.A 18566 2089 1907 Covad Communications 1785 1931 1799 PaeTec Communications, Inc. 10620 1983 1779 TVCABLE BOGOTA 8402 1628 1612 Corbina telecom 7545 1690 1603 TPG Internet Pty Ltd 22773 1656 1535 Cox Communications, Inc. 4766 2689 1488 Korea Telecom (KIX) Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Network Transit AS Description 15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic 25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic 13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic 23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic 17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic 17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies, 16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic 14764 UNALLOCATED 12.108.237.0/24 7018 AT&T WorldNet Servic 33649 UNALLOCATED 12.111.112.0/24 19029 New Edge Networks 29760 UNALLOCATED 12.145.34.0/23 7018 AT&T WorldNet Servic Complete listing at http://thyme.rand.apnic.net/current/data-badAS Prefixes from private and non-routed address space (Global) ----------------------------------------------------------- Prefix Origin AS Description 128.0.0.0/21 12654 RIPE NCC RIS Project 128.0.24.0/24 12654 RIPE NCC RIS Project Complete listing at http://thyme.rand.apnic.net/current/data-dsua Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 14.192.0.0/22 45464 Room 201, TGU Bldg 14.192.4.0/22 45464 Room 201, TGU Bldg 14.192.8.0/22 45464 Room 201, TGU Bldg 14.192.12.0/22 45464 Room 201, TGU Bldg 14.192.16.0/22 45464 Room 201, TGU Bldg 14.192.20.0/22 45464 Room 201, TGU Bldg 14.192.24.0/22 45464 Room 201, TGU Bldg 14.192.28.0/22 45464 Room 201, TGU Bldg 27.112.114.0/24 23884 Proimage Engineering and Comm 62.61.220.0/24 24974 Tachyon Europe BV - Wireless Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:19 /9:12 /10:28 /11:82 /12:236 /13:469 /14:841 /15:1521 /16:12308 /17:6376 /18:10769 /19:20908 /20:29682 /21:31424 /22:41182 /23:39084 /24:217243 /25:1224 /26:1473 /27:857 /28:169 /29:65 /30:18 /31:0 /32:23 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 7029 2632 3260 Windstream Communications Inc 18566 2039 2089 Covad Communications 6389 1871 3392 bellsouth.net, inc. 8402 1323 1628 Corbina telecom 30036 1319 1382 Mediacom Communications Corp 11492 1153 1190 Cable One 22773 1087 1656 Cox Communications, Inc. 6503 1058 1531 AVANTEL, S.A. 1785 1042 1931 PaeTec Communications, Inc. 8452 998 1222 TEDATA Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:574 2:735 3:1 4:13 5:131 6:3 8:433 12:2008 13:1 14:636 15:12 16:3 17:5 20:24 23:180 24:1776 27:1313 31:998 32:56 33:2 34:2 36:9 37:591 38:821 39:1 40:128 41:3062 42:142 44:3 46:1470 47:2 49:418 50:547 52:13 54:13 55:6 56:1 57:34 58:978 59:528 60:249 61:1297 62:967 63:2037 64:4257 65:2255 66:4486 67:2051 68:1154 69:3191 70:980 71:510 72:1837 74:2594 75:475 76:332 77:931 78:887 79:487 80:1213 81:947 82:660 83:529 84:494 85:1171 86:432 87:934 88:341 89:1749 90:301 91:5010 92:580 93:1360 94:1596 95:1220 96:379 97:318 98:889 99:39 100:19 101:253 103:1235 106:101 107:188 108:363 109:1428 110:785 111:940 112:420 113:634 114:653 115:904 116:930 117:729 118:926 119:1228 120:352 121:809 122:1674 123:1084 124:1397 125:1267 128:554 129:188 130:263 131:615 132:300 133:22 134:244 135:61 136:217 137:240 138:337 139:175 140:494 141:266 142:429 143:370 144:529 145:77 146:518 147:288 148:769 149:318 150:157 151:182 152:474 153:176 154:17 155:433 156:220 157:382 158:191 159:621 160:342 161:268 162:376 163:192 164:658 165:415 166:584 167:479 168:908 169:126 170:893 171:145 172:5 173:1730 174:617 175:438 176:564 177:924 178:1533 180:1290 181:99 182:1025 183:239 184:533 185:1 186:1918 187:1079 188:1355 189:1590 190:5739 192:6010 193:5521 194:4532 195:3430 196:1189 197:170 198:3673 199:4848 200:5911 201:1977 202:8701 203:8638 204:4325 205:2532 206:2800 207:2801 208:4028 209:3618 210:2780 211:1549 212:2003 213:1908 214:880 215:82 216:5071 217:1554 218:552 219:338 220:1237 221:568 222:337 223:357 End of report

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Re: job screening question
by Scott Weeks 06 Jul '12

06 Jul '12

--- bill(a)herrin.us wrote: From: William Herrin <bill(a)herrin.us> > 5. What is the reason for the 100m distance limit within an ethernet collision domain? What's an ethernet collision domain? Seriously, when was the last time you dealt with a half duplex ethernet? ----------------------------------------- Now if someone answered it that way, I'd definitely be interested while the HR person would just hang up... scott

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Re: job screening question
by Scott Weeks 06 Jul '12

06 Jul '12

--- diogo.montagner(a)gmail.com wrote:\ From: Diogo Montagner <diogo.montagner(a)gmail.com> For screening questions (for 1st level filtering), IMO, the questions has to be straight to the point, for example: 1) What is the LSA number for an external route in OSPF? This can have two answer: 5 or 7. So, I will accept if the candidate answer 5, 7 or 5 and 7. Later on (the next level of the interview), a techinical interviewer will chech if the candidate understand the differences of LSA 5 and 7. ----------------------------------------------------------- How often do you use this in everyday netgeeking? Asking these types of questions will assure that you get someone with a vendor i-drank-the-kool-aid cert because they memorized the answers, but maybe not the best candidate for the position. However, with some of today's managers kool-aid certs are looked on as better than an engineering degree. Go figure... :-( scott

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