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AS4134/AS4847 - Appear to be hijacking some ip space.
by Christopher Morrow 06 Apr '19

06 Apr '19

Howdy gentle folks: It looks like AS4847 - "China Networks Inter-Exchange" Is taking some time to announce reachability for at least: 136.38.33.0/24 which they ought not, given that this /24 is part of a /11 assigned to AS16591 (google fiber)... Looking at routeviews data, I see the following as-paths for this one /24: $ grep -A1 Refresh /tmp/x | grep 4847 1239 174 4134 4847 3549 3356 174 4134 4847 701 174 4134 4847 4901 6079 3257 4134 4847 20912 174 4134 4847 1221 4637 4134 4847 1351 11164 4134 4847 6079 1299 4134 4847 6079 3257 4134 4847 7018 4134 4847 6939 1299 4134 4847 3561 209 4134 4847 3303 4134 4847 3277 39710 9002 4134 4847 2497 4134 4847 4826 1299 4134 4847 54728 20130 23352 2914 4134 4847 19214 3257 4134 4847 101 101 11164 4134 4847 1403 6453 4134 4847 852 6453 4134 4847 1403 6453 4134 4847 286 4134 4847 3333 1273 4134 4847 57866 3491 4134 4847 3267 1299 4134 4847 49788 174 4134 4847 53767 3257 4134 4847 53364 3257 4134 4847 8283 57866 3491 4134 4847 7660 2516 4134 4847 >From that I think the following AS should have filtered this prefix and are not: $ grep -A1 Refresh /tmp/x | grep 4847 | sed 's/ 4134 4847//' | awk '{print $NF}' | sort -n | uniq 174 - Cogent 209 - Qwest 286 - KPN 1273 - Vodafone 1299 - Telia 2497 - IIJ 2516 - KDDI 2914 - NTT 3257 - GTT 3303 - Swisscom 3491 - PCCW 4637 - Telstra 6453 - TATA 7018 - ATT 9002 - RETN 11164 - Internet2 It'd be great if the listed folk could filter AS4134 :) -Chris

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GPS WNRO April 6th at GPS Midnight
by brutal8z 06 Apr '19

06 Apr '19

I've not seen any mention of this here, so it might be off-topic, if so, sorry in advance. If you use GPS for time synchronization, this might be important.The Juniper ACX500 series and the Cisco 819 both have an embedded GPS receivers, for example. At 23:59:42 UTC on 4/6/2019 (Midnight GPS time, which differs by 18 leap-seconds <https://en.wikipedia.org/wiki/Leap_second> from UTC) , the 10-bit GPS Week Number broadcast by the constellation will reset to zero for the second time since the beginning of GPS on 1/6/1980. Ken -- GPS Week Number Rollover (WNRO)

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Microsoft
by Mark Stevens 05 Apr '19

05 Apr '19

Good afternoon, If a network engineer from Microsoft could contact me offline it would be great. Reason: Attacks to my an IP on my network udp port 20480 from Microsoft IPs in the USA and the UK. Thanks Mark

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Centurylink-MSN issue in Dallas area?
by Nathanael Catangay Cariaga 05 Apr '19

05 Apr '19

Dear Nanog, Anyone here having problems with Centurylink and MSN? I hope Centurylink - MSN engineers here who can reach back to me off the list? I'm noticing high latency between the 2 in Dallas area (>180ms). Regards,

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DNS Qtypes and class values are a social construct
by Mark E. Jeftovic 05 Apr '19

05 Apr '19

The DNS is an inverted-tree hierarchy, which is problematic and promotes unequal outcomes among system participants. After a lengthy contemplative process we have enacted a system of social justice pricing which will rectify historical inequality. The new pricing is effective immediately and retroactive across all customers. Details - https://easydns.com/blog/2019/04/01/easydns-social-justice-pricing-goes-int… - mark -- Mark E. Jeftovic <markjr(a)easydns.com> Co-founder & CEO, easyDNS Technologies Inc. /Author of Managing Mission Critical Domains & DNS: The Book <https://easydns.com/blog/2018/07/18/new-book-managing-mission-critical-doma…>/ /Personal Blog: Guerrilla-Capitalism.com <https://guerrilla-capitalism.com>/

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Weekly Routing Table Report
by cscora＠apnic.net 05 Apr '19

05 Apr '19

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, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. 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 06 Apr, 2019 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 743761 Prefixes after maximum aggregation (per Origin AS): 285554 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 358387 Total ASes present in the Internet Routing Table: 63839 Prefixes per ASN: 11.65 Origin-only ASes present in the Internet Routing Table: 54939 Origin ASes announcing only one prefix: 23724 Transit ASes present in the Internet Routing Table: 8900 Transit-only ASes present in the Internet Routing Table: 274 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 34 Max AS path prepend of ASN (206156) 26 Prefixes from unregistered ASNs in the Routing Table: 28 Number of instances of unregistered ASNs: 35 Number of 32-bit ASNs allocated by the RIRs: 26474 Number of 32-bit ASNs visible in the Routing Table: 21592 Prefixes from 32-bit ASNs in the Routing Table: 94741 Number of bogon 32-bit ASNs visible in the Routing Table: 29 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 251 Number of addresses announced to Internet: 2844502144 Equivalent to 169 /8s, 139 /16s and 168 /24s Percentage of available address space announced: 76.8 Percentage of allocated address space announced: 76.8 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.2 Total number of prefixes smaller than registry allocations: 249042 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 200892 Total APNIC prefixes after maximum aggregation: 57957 APNIC Deaggregation factor: 3.47 Prefixes being announced from the APNIC address blocks: 197778 Unique aggregates announced from the APNIC address blocks: 82200 APNIC Region origin ASes present in the Internet Routing Table: 9644 APNIC Prefixes per ASN: 20.51 APNIC Region origin ASes announcing only one prefix: 2700 APNIC Region transit ASes present in the Internet Routing Table: 1432 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 30 Number of APNIC region 32-bit ASNs visible in the Routing Table: 4630 Number of APNIC addresses announced to Internet: 769411456 Equivalent to 45 /8s, 220 /16s and 73 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-139577 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: 219668 Total ARIN prefixes after maximum aggregation: 103931 ARIN Deaggregation factor: 2.11 Prefixes being announced from the ARIN address blocks: 218709 Unique aggregates announced from the ARIN address blocks: 105006 ARIN Region origin ASes present in the Internet Routing Table: 18426 ARIN Prefixes per ASN: 11.87 ARIN Region origin ASes announcing only one prefix: 6859 ARIN Region transit ASes present in the Internet Routing Table: 1889 Average ARIN Region AS path length visible: 3.9 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 2645 Number of ARIN addresses announced to Internet: 1079698560 Equivalent to 64 /8s, 90 /16s and 228 /24s 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, 62464-63487, 64198-64296, 393216-399260 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: 205325 Total RIPE prefixes after maximum aggregation: 97761 RIPE Deaggregation factor: 2.10 Prefixes being announced from the RIPE address blocks: 201667 Unique aggregates announced from the RIPE address blocks: 119689 RIPE Region origin ASes present in the Internet Routing Table: 25968 RIPE Prefixes per ASN: 7.77 RIPE Region origin ASes announcing only one prefix: 11541 RIPE Region transit ASes present in the Internet Routing Table: 3692 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 34 Number of RIPE region 32-bit ASNs visible in the Routing Table: 7985 Number of RIPE addresses announced to Internet: 718206336 Equivalent to 42 /8s, 206 /16s and 245 /24s 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, 61952-62463, 64396-64495 196608-210331 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: 96613 Total LACNIC prefixes after maximum aggregation: 21614 LACNIC Deaggregation factor: 4.47 Prefixes being announced from the LACNIC address blocks: 97958 Unique aggregates announced from the LACNIC address blocks: 42031 LACNIC Region origin ASes present in the Internet Routing Table: 8247 LACNIC Prefixes per ASN: 11.88 LACNIC Region origin ASes announcing only one prefix: 2188 LACNIC Region transit ASes present in the Internet Routing Table: 1528 Average LACNIC Region AS path length visible: 5.1 Max LACNIC Region AS path length visible: 27 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 5794 Number of LACNIC addresses announced to Internet: 172779008 Equivalent to 10 /8s, 76 /16s and 102 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-270748 + 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: 21234 Total AfriNIC prefixes after maximum aggregation: 4269 AfriNIC Deaggregation factor: 4.97 Prefixes being announced from the AfriNIC address blocks: 27398 Unique aggregates announced from the AfriNIC address blocks: 9229 AfriNIC Region origin ASes present in the Internet Routing Table: 1261 AfriNIC Prefixes per ASN: 21.73 AfriNIC Region origin ASes announcing only one prefix: 436 AfriNIC Region transit ASes present in the Internet Routing Table: 243 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 21 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 538 Number of AfriNIC addresses announced to Internet: 104150016 Equivalent to 6 /8s, 53 /16s and 52 /24s 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 7545 4728 546 549 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4706 4192 74 ERX-CERNET-BKB China Education and Rese 7552 3131 1313 54 VIETEL-AS-AP Viettel Group, VN 45899 3038 1734 111 VNPT-AS-VN VNPT Corp, VN 9829 2748 1496 551 BSNL-NIB National Internet Backbone, IN 4766 2613 11120 761 KIXS-AS-KR Korea Telecom, KR 9808 2435 8699 27 CMNET-GD Guangdong Mobile Communication 9394 2180 4906 29 CTTNET China TieTong Telecommunications 4755 2149 429 186 TATACOMM-AS TATA Communications formerl 9498 2032 426 167 BBIL-AP BHARTI Airtel Ltd., IN 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 11492 3642 238 588 CABLEONE - CABLE ONE, INC., US 6327 3600 1325 94 SHAW - Shaw Communications Inc., CA 22773 3388 2976 161 ASN-CXA-ALL-CCI-22773-RDC - Cox Communi 16509 2606 5902 1078 AMAZON-02 - Amazon.com, Inc., US 16625 2348 1294 1791 AKAMAI-AS - Akamai Technologies, Inc., 30036 2152 355 130 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom 20115 2151 2751 532 CHARTER-20115 - Charter Communications, 18566 2109 405 108 MEGAPATH5-US - MegaPath Corporation, US 5650 2086 3074 1462 FRONTIER-FRTR - Frontier Communications 209 2056 5103 577 CENTURYLINK-US-LEGACY-QWEST - CenturyLi 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 12479 5430 1628 139 UNI2-AS, ES 39891 3778 203 20 ALJAWWALSTC-AS, SA 8551 3254 378 45 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 20940 2644 539 1919 AKAMAI-ASN1, US 12389 2225 2221 636 ROSTELECOM-AS, RU 34984 2081 342 535 TELLCOM-AS, TR 9121 1683 1693 19 TTNET, TR 13188 1605 100 47 TRIOLAN, UA 9009 1409 147 767 M247, GB 8402 1259 545 15 CORBINA-AS OJSC "Vimpelcom", RU 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 8151 5663 3338 592 Uninet S.A. de C.V., MX 10620 3476 537 375 Telmex Colombia S.A., CO 11830 2706 384 34 Instituto Costarricense de Electricidad 7303 1454 992 247 Telecom Argentina S.A., AR 6503 1354 433 53 Axtel, S.A.B. de C.V., MX 28573 1348 2249 187 CLARO S.A., BR 6147 1259 374 25 Telefonica del Peru S.A.A., PE 3816 1023 505 113 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 13999 962 524 248 Mega Cable, S.A. de C.V., MX 11172 955 144 63 Alestra, S. de R.L. de C.V., MX 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 24863 1204 393 21 LINKdotNET-AS, EG 37611 892 107 9 Afrihost, ZA 24835 883 646 21 RAYA-AS, EG 36903 827 416 126 MT-MPLS, MA 36992 816 1531 71 ETISALAT-MISR, EG 8452 706 1731 19 TE-AS TE-AS, EG 29571 495 70 12 ORANGE-COTE-IVOIRE, CI 37492 470 470 57 ORANGE-, TN 15706 420 32 6 Sudatel, SD 37342 420 32 1 MOVITEL, MZ 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 8151 5663 3338 592 Uninet S.A. de C.V., MX 12479 5430 1628 139 UNI2-AS, ES 7545 4728 546 549 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4706 4192 74 ERX-CERNET-BKB China Education and Rese 39891 3778 203 20 ALJAWWALSTC-AS, SA 11492 3642 238 588 CABLEONE - CABLE ONE, INC., US 6327 3600 1325 94 SHAW - Shaw Communications Inc., CA 10620 3476 537 375 Telmex Colombia S.A., CO 22773 3388 2976 161 ASN-CXA-ALL-CCI-22773-RDC - Cox Communi 8551 3254 378 45 BEZEQ-INTERNATIONAL-AS Bezeqint Interne Complete listing at http://thyme.rand.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 12479 5430 5291 UNI2-AS, ES 4538 4706 4632 ERX-CERNET-BKB China Education and Research Net 7545 4728 4179 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 3778 3758 ALJAWWALSTC-AS, SA 6327 3600 3506 SHAW - Shaw Communications Inc., CA 22773 3388 3227 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 8551 3254 3209 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 10620 3476 3101 Telmex Colombia S.A., CO 7552 3131 3077 VIETEL-AS-AP Viettel Group, VN 11492 3642 3054 CABLEONE - CABLE ONE, INC., US Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Network Transit AS Description 230105 UNALLOCATED 38.110.79.0/24 23015 CMC180-TOR-AS - Cambridge Merc 266842 UNALLOCATED 45.238.156.0/22 265680 HNTELCO S.A, HN 65550 DOCUMENT 81.8.34.0/24 15924 BORUSANTELEKOM-AS, TR 65550 DOCUMENT 81.8.35.0/24 15924 BORUSANTELEKOM-AS, TR 66087 UNALLOCATED 103.136.231.0/24 138903 KHILGAON-AS-AP KHILGAON DOT NE 651315 UNALLOCATED 103.137.6.0/24 17806 MANGOTELESERVICE-AS-BD Tire-1 651315 UNALLOCATED 103.137.7.0/24 17806 MANGOTELESERVICE-AS-BD Tire-1 65549 DOCUMENT 117.239.163.0/24 65544 UNKNOWN 64339 UNALLOCATED 143.0.108.0/22 18747 IFX18747 - IFX Corporation, US 64355 UNALLOCATED 156.40.196.0/24 30387 NIH-NET-NCCS - National Instit Complete listing at http://thyme.rand.apnic.net/current/data-badAS Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 27.100.7.0/24 56096 UNKNOWN 27.126.156.0/22 55827 UNKNOWN 27.126.156.0/23 55827 UNKNOWN 27.126.158.0/23 55827 UNKNOWN 41.76.136.0/22 37500 -Reserved AS-, ZZ 41.76.140.0/22 37500 -Reserved AS-, ZZ 41.78.92.0/22 14988 BTC-GATE1, BW 41.78.180.0/23 37265 -Reserved AS-, ZZ 41.220.48.0/20 36900 -Reserved AS-, ZZ 43.255.80.0/24 36351 SOFTLAYER - SoftLayer Technologies Inc., US 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 /8:12 /9:10 /10:36 /11:100 /12:291 /13:567 /14:1136 /15:1909 /16:13351 /17:7968 /18:13896 /19:25599 /20:39974 /21:46167 /22:93269 /23:75655 /24:422757 /25:1064 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 12479 4343 5430 UNI2-AS, ES 6327 3374 3600 SHAW - Shaw Communications Inc., CA 39891 2946 3778 ALJAWWALSTC-AS, SA 11492 2848 3642 CABLEONE - CABLE ONE, INC., US 8551 2707 3254 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 22773 2627 3388 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 11830 2051 2706 Instituto Costarricense de Electricidad y Telec 18566 2004 2109 MEGAPATH5-US - MegaPath Corporation, US 30036 1899 2152 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communi 5650 1754 2086 FRONTIER-FRTR - Frontier Communications of Amer Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1601 2:952 4:22 5:3025 6:45 7:1 8:1286 9:1 11:3 12:1806 13:324 14:1991 15:36 16:4 17:241 18:58 20:49 23:2657 24:2516 25:2 27:2496 31:1977 32:97 35:36 36:841 37:3048 38:1715 39:294 40:119 41:3280 42:768 43:2026 44:149 45:7147 46:3248 47:257 49:1356 50:1104 51:322 52:1016 54:285 55:2 56:9 57:42 58:1786 59:1080 60:506 61:2125 62:2124 63:1813 64:4961 65:2214 66:4843 67:2715 68:1168 69:3529 70:1329 71:599 72:2448 74:2764 75:514 76:548 77:1731 78:1766 79:2321 80:1811 81:1507 82:1134 83:907 84:1116 85:2303 86:528 87:1552 88:1053 89:2605 90:220 91:6555 92:1366 93:2437 94:2551 95:3228 96:927 97:343 98:948 99:210 100:87 101:1153 102:516 103:20878 104:3521 105:252 106:811 107:1779 108:692 109:3731 110:1649 111:1905 112:1487 113:1395 114:1139 115:1722 116:1720 117:1900 118:2186 119:1644 120:1025 121:1043 122:2341 123:1644 124:1472 125:1978 128:1265 129:822 130:531 131:1652 132:742 133:219 134:1052 135:242 136:573 137:718 138:2058 139:850 140:580 141:858 142:793 143:1068 144:859 145:494 146:1263 147:835 148:1723 149:821 150:783 151:1012 152:1053 153:323 154:2778 155:903 156:1619 157:952 158:640 159:1929 160:1529 161:919 162:2714 163:798 164:1188 165:1564 166:445 167:1392 168:3292 169:868 170:4142 171:574 172:1136 173:2204 174:1038 175:910 176:2354 177:4221 178:2528 179:1460 180:2181 181:2404 182:2665 183:1073 184:1207 185:14941 186:3664 187:2479 188:2893 189:1967 190:8316 191:1570 192:10052 193:6662 194:5413 195:4100 196:3089 197:1772 198:5839 199:5987 200:7214 201:5127 202:10407 203:10113 204:4544 205:3022 206:3220 207:3248 208:3967 209:4242 210:3936 211:2001 212:3158 213:2929 214:1093 215:54 216:5940 217:2235 218:880 219:580 220:1860 221:968 222:987 223:1363 End of report

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Re: DNS Qtypes and class values are a social construct
by Nick Morrison 05 Apr '19

05 Apr '19

On Mon, 1 Apr 2019 at 18:09, Alfie Pates <alfie(a)fdx.services> wrote: > I feel this comes off as poking fun at trans people, women, and earnest > attempts to combat what are actual problems in our industry, more than it > pokes fun at the industry itself which is what a good April Fool should do > - this feels more like laughing at "outsiders" more than laughing at > ourselves. > > I think this is pretty tone-deaf, in my opinion. > Completely agree, Alfie. (And hi, nanog, I'm Nick. Do we do introduction rounds here?) Nick

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RE: Purchasing IPv4 space - due diligence homework
by Torres, Matt 04 Apr '19

04 Apr '19

Thanks NANOG. For those interested, here is a summary list of due diligence tasks for purchasing IPv4 on the secondary market: 1. Check out the seller (Google search). What is their story? Generally avoid hosting companies because they may have more block/black list cleanup to do. 2. Check the BGP looking glass Internet routing table. Make sure the IPv4 address is not routed right now. 3. Check the historical Internet routing table. It is a good sign if the IPv4 network was advertised from the right company/ASN without recent changes https://stat.ripe.net/widget/routing-history# 4. Check ARIN registration. Singular, long standing registration for the IPv4 space is a good sign. 5. Check block list / black list. SORBS and Spamhaus are good resources. It is a good sign if the IPv4 network does not show up at all. http://www.anti-abuse.org/multi-rbl-check/ 6. Check geo-location. It is a good sign if the IPv4 space shows up in the right global region. Try MaxMind. 7. There is a PowerShell script (that can be expanded on) to help expedite the checking process. https://www.saotn.org/powershell-blacklist-check-script/#more-2459 Thanks, Matt

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modeling residential subscriber bandwidth demand
by Tom Ammon 04 Apr '19

04 Apr '19

How do people model and try to project residential subscriber bandwidth demands into the future? Do you base it primarily on historical data? Are there more sophisticated approaches that you use to figure out how much backbone bandwidth you need to build to keep your eyeballs happy? Netflow for historical data is great, but I guess what I am really asking is - how do you anticipate the load that your eyeballs are going to bring to your network, especially in the face of transport tweaks such as QUIC and TCP BBR? Tom -- ----------------------------------------------------------------------------- Tom Ammon M: (801) 784-2628 thomasammon(a)gmail.com -----------------------------------------------------------------------------

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Purchasing IPv4 space - due diligence homework
by Torres, Matt 04 Apr '19

04 Apr '19

All, Side stepping a migration to IPv6 debate.... I'd like to hear advise from the group about performing due diligence research on an IPv4 block before purchasing it on the secondary market (on behalf of an end-user company). My research has branched into two questions: a) What 'checks' should I perform?, and b) what results from those checks should cause us to walk away? My current list is: 1. Check BGP looking glass for route. It should not show up in the Internet routing table. If it does, walk away. 2. Check the ARIN registry. The longer history without recent transfers or changes is better. I don't know what explicit results should cause me to walk away here. 3. Check SORBS blacklisting. It should not show up except maybe the DUHL list(?). If it does, walk away. Anything else? Advise? Thanks, Matt

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