November 2025 - NANOG - lists.nanog.org

Correctly dealing with bots and scrapers.
by Andrew Latham 21 Mar '26

21 Mar '26

I just had an issue with a web-server where I had to block a /18 of a large scraper. I have some topics I could use some input on. 1. What tools or setups have people found most successful for dealing with bots/scrapers that do not respect robots.txt for example? 2. What tools for response rate limiting deal with bots/scrapers that cycle over a large variety of IPs with the exact same user agent? 3. Has anyone written or found a tool to concentrate IP addresses into networks for IPTABLES or NFT? (60% of IPs for network X in list so add network X and remove individual IP entries.) -- - Andrew "lathama" Latham -

17 31

New c-nsp, j-nsp, a-nsp, etc mailing lists
by Drew Weaver 20 Jan '26

20 Jan '26

I was a big fan of the *-nsp(a)puck.nether.net<mailto:*-nsp@puck.nether.net> mailing lists that now seem to be completely gone without any indication of whether or when they might return. I've been considering just setting up new ones. Please email me off-list if you think this might be useful. Thanks, -Drew

15 25

US Impact - October 29 2025
by Victor Kuarsingh 17 Dec '25

17 Dec '25

All, Anyone know what caused the large impact in the US at around noon ET today? regards, Vector K

9 11

IPv4 Pricing
by Mike Hammett 07 Dec '25

07 Dec '25

What are you using for guides for IPv4 pricing? There are a bunch of undated blogs, which don't mean much if there's no date. Hilco's blog says somewhere around $27 for a /22 to /24: https://www.ipv4.global/reports/october-2025/ but then fast forward a month on their auction page and it's down to $22: https://auctions.ipv4.global/prior-sales These guys stopped updating in June: https://ipv4market.eu/ipv4-market-average-sale-prices-2025/ ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest-IX http://www.midwest-ix.com

29 86

NANOG Featured on "Packet Pushers" Podcast Network! 🦃 Happy Thanksgiving! + More
by Nanog News 30 Nov '25

30 Nov '25

*** Packet Pushers, A Podcast Network for IT Technologists, Talks to NANOG* ------------------------------------------------------------ *Long-time Member + Board Member Steve Feldman Discusses the Past, Present, and Future of NANOG* Recently, at NANOG's 95th community-wide meeting (Oct. 27-29), Ethan Banks, founder of Packet Pushers (https://packetpushers.net/) , an interactive media company that serves the global community of hands-on IT professionals & vendors with technical podcasts, blogs & videos, recorded an episode of the Heavy Networking Podcast ( https://packetpushers.net/podcast/heavy-networking/) . Ethan interviewed long-time NANOG leader and board member Steve Feldman to chart the organization’s journey from its earliest days, the current challenges in network operations, and what’s ahead for this remarkable community. *READ MORE* ( https://nanog.org/stories/articles/packet-pushers-a-podcast-network-for-it-… ) *** Picture This! View NANOG 95 Photo Albums Now* ------------------------------------------------------------ *Download Photos or Reminisce about the Good Times Had at our Last Conference* All pictures from NANOG 95 + past conferences can be found on our Flickr account. *VIEW NOW* (https://www.flickr.com/photos/nanog/albums/) *** Help Spread the Word about NANOG 96!* ------------------------------------------------------------ *Logos, Website Banners, + Social Media Images Available on Conference Kit* NANOG 96 will kick off this February in San Francisco! Register now and then download one of our logos and add it to your email signature line, post it on your socials, or add a banner to your website. VIEW NOW (https://nanog.org/events/nanog-96/conference-kit/) *🦃 **** Happy Thanksgiving From NANOG!* ------------------------------------------------------------ *We Are So Grateful for a Community Like You!* To everyone who contributes time, knowledge and heart to this community: thank you. Your work powers more than networks; it supports the way the world connects. Wishing you a peaceful holiday, good food, and even better company. *From all of us at NANOG, Happy Thanksgiving.* *** Stay Connected* ------------------------------------------------------------ http://www.facebook.com http://www.instagram.com/nanog_org/ http://www.linkedin.com/company/nanog/ https://www.twitter.com/nanog/ http://nanog.org

7 9

400G ER4 wavelengths - two grids
by Joel Busch 29 Nov '25

29 Nov '25

Dear colleagues I have come across a weird mishmash of offers for QSFP56-DD 400G ER4 and ER4 lite transceivers in the market, and now I'm looking to compare notes. It seems to me that there were two separate development trains going on at once. Resulting in two incompatible grids of four wavelengths being used (and sold, see below): - 1295.56 nm 1300.05 nm 1304.58 nm 1309.14 nm - 1304.58 nm 1306.85 nm 1309.14 nm 1311.43 nm Why you would go tighter seems obvious to me: To stay close to the zero point of dispersion with all four lanes, and perhaps to make all four experience more similar levels of dispersion, to make dispersion compensation in the receiver easier. It seems that the wider spaced set is based on IEEE802.3 clause 122 (added in IEEE802.3bs), more specifically in Table 122–6 "200GBASE-LR4 and 200GBASE-ER4 wavelength-division-multiplexed lane assignments". (Note that it doesn't officially specify 400GBASE-ER4, this was apparently added in the 50G-per-lambda-time.) The tighter spaced seems to be based on the 100G Lambda MSA specification called "400G-ER4-30 Technical Specification 1.0" specifically Table 2-1 "Wavelength-division-multiplexed lane assignments" [0] FS.com and Fibermall sell transceivers with the wide spacing [1][2] Flexoptix sells transceivers with the narrow spacing [3] According to a contact at one of the shops the wide spacing is also called LWDM and the tight one is called nLWDM. Both now exist and are out there, so caveat emptor, I guess... Does anyone have any parts sourced directly from a router manufacturer? Could you share what they went with optically? Or any other pertinent insider knowledge? :-) Best regards, Joel [0] https://100glambda.com/specifications [1] https://resource.fs.com/mall/resource/qdd-er4l-400g-data-sheet.pdf [2] https://www.fibermall.com/sale-461143-qsfp-dd-400g-er4-lite-lwdm4-30km.htm [3] https://www.flexoptix.net/en/d-164hg-30-e.html?option875=1 -- Joel Busch, Network Engineer Switch, AS559

4 14

Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 28 Nov '25

28 Nov '25

This is an automated weekly mailing describing the state of the Global IPv4 Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG UKNOF, 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 https://thyme.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. IPv4 Routing Table Report 04:00 +10GMT Sat 29 Nov, 2025 IPv4 BGP Table (Global) as seen at Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 1018473 Prefixes after maximum aggregation (per Origin AS): 393981 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 503472 Number of IPv4 prefixes with a valid ROA: 587879 Number of IPv4 prefixes with an invalid ROA: 1540 Number of IPv4 prefixes with no ROA: 429054 Total ASes present in the Internet Routing Table: 77588 Prefixes per ASN: 13.13 Origin-only ASes present in the Internet Routing Table: 66640 Origin ASes announcing only one prefix: 27122 Transit ASes present in the Internet Routing Table: 10948 Transit-only ASes present in the Internet Routing Table: 541 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 69 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 999 Number of instances of unregistered ASNs: 1038 Number of 32-bit ASNs allocated by the RIRs: 48096 Number of 32-bit ASNs visible in the Routing Table: 39369 Prefixes from 32-bit ASNs in the Routing Table: 217181 Number of bogon 32-bit ASNs visible in the Routing Table: 113 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 468 Number of addresses announced to Internet: 3101305472 Equivalent to 184 /8s, 218 /16s and 42 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 333720 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275088 Total APNIC prefixes after maximum aggregation: 81285 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 262900 Unique aggregates announced from the APNIC address blocks: 105999 APNIC Region origin ASes present in the Internet Routing Table: 14900 APNIC Prefixes per ASN: 17.64 APNIC Region origin ASes announcing only one prefix: 4545 APNIC Region transit ASes present in the Internet Routing Table: 1978 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 34 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10447 Number of APNIC addresses announced to Internet: 753793536 Equivalent to 44 /8s, 237 /16s and 250 /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, 131072-155961 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: 298891 Total ARIN prefixes after maximum aggregation: 134441 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298587 Unique aggregates announced from the ARIN address blocks: 145544 ARIN Region origin ASes present in the Internet Routing Table: 19379 ARIN Prefixes per ASN: 15.41 ARIN Region origin ASes announcing only one prefix: 7100 ARIN Region transit ASes present in the Internet Routing Table: 1944 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5416 Number of ARIN addresses announced to Internet: 1337495296 Equivalent to 79 /8s, 184 /16s and 143 /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, 393216-402332 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, 54/8, 55/8, 56/8, 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: 282217 Total RIPE prefixes after maximum aggregation: 139864 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283012 Unique aggregates announced from the RIPE address blocks: 183530 RIPE Region origin ASes present in the Internet Routing Table: 29134 RIPE Prefixes per ASN: 9.71 RIPE Region origin ASes announcing only one prefix: 12086 RIPE Region transit ASes present in the Internet Routing Table: 3958 Average RIPE Region AS path length visible: 4.8 Max RIPE Region AS path length visible: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12850 Number of RIPE addresses announced to Internet: 735793536 Equivalent to 43 /8s, 219 /16s and 81 /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 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 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: 125782 Total LACNIC prefixes after maximum aggregation: 30807 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121793 Unique aggregates announced from the LACNIC address blocks: 49634 LACNIC Region origin ASes present in the Internet Routing Table: 11313 LACNIC Prefixes per ASN: 10.77 LACNIC Region origin ASes announcing only one prefix: 2665 LACNIC Region transit ASes present in the Internet Routing Table: 2526 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 69 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9302 Number of LACNIC addresses announced to Internet: 170754560 Equivalent to 10 /8s, 45 /16s and 130 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 35496 Total AfriNIC prefixes after maximum aggregation: 6916 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 51713 Unique aggregates announced from the AfriNIC address blocks: 18377 AfriNIC Region origin ASes present in the Internet Routing Table: 1992 AfriNIC Prefixes per ASN: 25.96 AfriNIC Region origin ASes announcing only one prefix: 726 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1354 Number of AfriNIC addresses announced to Internet: 103233536 Equivalent to 6 /8s, 39 /16s and 56 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & 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 9808 13579 8760 120 CHINAMOBILE-CN China Mobile Communication 7545 6068 832 594 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 5008 4193 77 ERX-CERNET-BKB China Education and Resear 9498 4584 541 335 BBIL-AP BHARTI Airtel Ltd., IN 7552 4000 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3714 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3332 827 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3325 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2948 865 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2497 274 1925 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14233 37207 5385 AMAZON-02, US 22773 4775 3116 369 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3303 4861 481 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2873 1229 2147 AKAMAI-AS, US 36352 2829 231 910 AS-COLOCROSSING, US 174 2692 8766 841 COGENT-174, US Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7297 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4022 380 2288 M247, RO 20940 3867 3395 126 AKAMAI-ASN1, NL 12389 3169 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2530 180 1830 CDNEXT, GB 34984 2420 363 577 TELLCOM-AS, TR 8452 1700 1852 14 TE-AS TE-AS, EG 203020 1608 241 781 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12652 3301 570 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2507 509 348 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2432 263 Claro NXT Telecomunicacoes Ltda, BR 3816 1348 783 210 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1265 371 22 Telefonica del Peru S.A.A., PE 22884 1055 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, BR 18881 918 1127 31 TELEFONICA BRASIL S.A, BR Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1986 630 32 RAYA-AS, EG 36992 1681 1508 399 ETISALAT-MISR, EG 24863 1265 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1088 520 33 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 563 82 3 KENET-AS, KE 15399 533 55 49 WANANCHI-, KE Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14233 37207 5385 AMAZON-02, US 9808 13579 8760 120 CHINAMOBILE-CN China Mobile Communication 8151 12652 3301 570 UNINET, MX 12479 7297 1711 149 UNI2-AS, ES 7545 6068 832 594 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 5008 4193 77 ERX-CERNET-BKB China Education and Resear 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4775 3116 369 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4584 541 335 BBIL-AP BHARTI Airtel Ltd., IN Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13579 13459 CHINAMOBILE-CN China Mobile Communications Grou 8151 12652 12082 UNINET, MX 12479 7297 7148 UNI2-AS, ES 7545 6068 5474 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 5008 4931 ERX-CERNET-BKB China Education and Research Net 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4775 4406 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4584 4249 BBIL-AP BHARTI Airtel Ltd., IN 7552 4000 3972 VIETEL-AS-AP Viettel Group, VN 11492 4715 3802 CABLEONE, US Complete listing at https://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US Complete listing at https://thyme.apnic.net/current/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://thyme.apnic.net/current/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 3257 GTT-BACKBONE GTT, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 2516 KDDI KDDI CORPORATION, JP 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US Complete listing at https://thyme.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 /8:16 /9:14 /10:41 /11:94 /12:298 /13:580 /14:1197 /15:2092 /16:13707 /17:8300 /18:13573 /19:25023 /20:45408 /21:52606 /22:113495 /23:105377 /24:635951 /25:701 /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 8151 6839 12652 UNINET, MX 12479 6234 7297 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3048 4775 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2433 14233 AMAZON-02, US 30036 2309 2652 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1804 2:1543 3:971 4:10 5:4900 6:189 7:6 8:1522 9:6 11:172 12:1233 13:570 14:2646 15:413 16:303 17:388 18:912 20:586 21:4 22:188 23:8092 24:2553 25:2 27:2723 29:19 31:3397 32:32 33:1 34:81 35:287 36:4591 37:4547 38:9325 39:1190 40:450 41:4464 42:949 43:2813 44:400 45:19473 46:5101 47:379 49:2163 50:2049 51:598 52:1567 54:289 55:1108 56:11 57:304 58:2213 59:1383 60:1186 61:3058 62:3097 63:1747 64:5968 65:2130 66:5937 67:3236 68:1495 69:4190 70:1031 71:617 72:3026 74:2942 75:1517 76:603 77:2770 78:1920 79:1774 80:2311 81:2096 82:3819 83:1470 84:2027 85:3645 86:1103 87:2306 88:1341 89:4613 90:843 91:8430 92:2841 93:3009 94:4235 95:4567 96:1449 97:313 98:957 99:773 100:67 101:1096 102:4302 103:32191 104:5510 105:776 106:903 107:2806 108:1208 109:4227 110:2299 111:3956 112:2785 113:1649 114:2099 115:2216 116:2146 117:3124 118:2525 119:2098 120:2397 121:1562 122:2963 123:2295 124:1671 125:2927 126:125 128:1591 129:971 130:1505 131:2243 132:771 133:462 134:1617 135:389 136:1496 137:1203 138:2882 139:1590 140:1782 141:1545 142:2322 143:2139 144:1318 145:634 146:2189 147:2164 148:2788 149:2882 150:1307 151:2642 152:2297 153:615 154:9213 155:2244 156:4099 157:2199 158:1451 159:2679 160:3664 161:1989 162:3996 163:2325 164:1961 165:2594 166:1315 167:2142 168:3880 169:792 170:5447 171:1114 172:4477 173:3411 174:908 175:1345 176:3777 177:4723 178:4293 179:2307 180:2832 181:4311 182:3838 183:2375 184:2060 185:21699 186:5508 187:4769 188:4434 189:4485 190:9720 191:1568 192:11460 193:9497 194:7855 195:5615 196:3268 197:3208 198:6238 199:6101 200:8253 201:6380 202:10663 203:10489 204:4641 205:3739 206:4410 207:3904 208:4253 209:5460 210:4978 211:2741 212:4914 213:4013 214:1040 215:52 216:7113 217:3356 218:1637 219:577 220:2201 221:1281 222:902 223:3189 End of report

1 0

internet - at least texas
by Aaron Gould 26 Nov '25

26 Nov '25

what in the world is going on in texas? i'm in south texas (san antonio) and all 4 of my internet connections went way down! i disabled cogent bgp and already looking better on my other transit links (non-cogent) -- -Aaron

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How Consolidation is Eroding Internet Resilience
by Hank Nussbacher 24 Nov '25

24 Nov '25

https://pulse.internetsociety.org/blog/how-consolidation-is-eroding-interne… Some may find this of interest. Regards, Hank

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A Must-See NANOG 96 Keynote! + More!
by Nanog News 21 Nov '25

21 Nov '25

*** A Must-See NANOG 96 Keynote!* ------------------------------------------------------------ *Presenting: Beyond the Chip — The Unprecedented Infrastructure Demands of AI + HPC* AI and HPC are outpacing what traditional data centers can deliver. At NANOG 96, experts from AHEAD and NVIDIA will break down what operators must rethink, from facility design to next-gen networking. *They’ll cover:* • Why today’s infrastructure model no longer works • Power + cooling needed for extreme-density environments • Balancing sustainability with massive performance requirements • Essential upgrades in scale, bandwidth, and visibility Speakers: Chris Stewart, Chris Tucker (AHEAD) • David Iles (NVIDIA) *REGISTER NOW* (https://nanog.org/events/nanog-96/register/) *** Don’t Get Stuck with High San Francisco Rates — Our Room Block Is Filling Fast! Reserve Your N96 Hotel Now* ------------------------------------------------------------ *Join Us at the Hyatt Regency San Francisco* Room Rate: $289.00 USD Standard Room Occupancy (up to 2 people) Group Rate Expires: January 16, 2026, OR once the NANOG block is filled. *MORE INFO *(https://nanog.org/events/nanog-96/venue/) *** Finding What You Need on NANOG.org Just Got Easier!* ------------------------------------------------------------ *We've Launched Search Function Improvements on Our Website* The search function on our website now indexes everything NANOG. That's the website, all presentations by title, author, abstract, event, and transcripts, including content from the archive site and YouTube. If you’ve recently run into a “missing file” error, that should now be resolved. We’d love your feedback on the new search experience: the good, the bad, the weird, and the buggy. If results aren’t what you expect, or you’ve got a feature request, we want to hear it. 📩* EMAIL at feedback(a)nanog.org <feedback(a)nanog.org>. * *** Stay Connected* ------------------------------------------------------------ http://www.facebook.com http://www.instagram.com/nanog_org/ http://www.linkedin.com/company/nanog/ https://www.twitter.com/nanog/ http://nanog.org

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