November 2023 - Test - lists.nanog.org

Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 24 Nov '23

24 Nov '23

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 25 Nov, 2023 BGP Table (Global) as seen in Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 935642 Prefixes after maximum aggregation (per Origin AS): 356140 Deaggregation factor: 2.63 Unique aggregates announced (without unneeded subnets): 454675 Total ASes present in the Internet Routing Table: 75088 Prefixes per ASN: 12.46 Origin-only ASes present in the Internet Routing Table: 64431 Origin ASes announcing only one prefix: 26523 Transit ASes present in the Internet Routing Table: 10657 Transit-only ASes present in the Internet Routing Table: 478 Average AS path length visible in the Internet Routing Table: 4.2 Max AS path length visible: 55 Max AS path prepend of ASN (265020) 50 Prefixes from unregistered ASNs in the Routing Table: 1036 Number of instances of unregistered ASNs: 1038 Number of 32-bit ASNs allocated by the RIRs: 43101 Number of 32-bit ASNs visible in the Routing Table: 35439 Prefixes from 32-bit ASNs in the Routing Table: 178053 Number of bogon 32-bit ASNs visible in the Routing Table: 29 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 525 Number of addresses announced to Internet: 3049330944 Equivalent to 181 /8s, 193 /16s and 25 /24s Percentage of available address space announced: 82.4 Percentage of allocated address space announced: 82.4 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: 310583 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 249008 Total APNIC prefixes after maximum aggregation: 71753 APNIC Deaggregation factor: 3.47 Prefixes being announced from the APNIC address blocks: 242249 Unique aggregates announced from the APNIC address blocks: 99279 APNIC Region origin ASes present in the Internet Routing Table: 13790 APNIC Prefixes per ASN: 17.57 APNIC Region origin ASes announcing only one prefix: 4151 APNIC Region transit ASes present in the Internet Routing Table: 1859 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 32 Number of APNIC region 32-bit ASNs visible in the Routing Table: 9120 Number of APNIC addresses announced to Internet: 771834752 Equivalent to 46 /8s, 1 /16s and 67 /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, 131072-153913 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: 273658 Total ARIN prefixes after maximum aggregation: 124133 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 278450 Unique aggregates announced from the ARIN address blocks: 132343 ARIN Region origin ASes present in the Internet Routing Table: 19075 ARIN Prefixes per ASN: 14.60 ARIN Region origin ASes announcing only one prefix: 6959 ARIN Region transit ASes present in the Internet Routing Table: 1954 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 25 Number of ARIN region 32-bit ASNs visible in the Routing Table: 4829 Number of ARIN addresses announced to Internet: 1276687360 Equivalent to 76 /8s, 24 /16s and 180 /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, 393216-401308 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, 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: 262273 Total RIPE prefixes after maximum aggregation: 124809 RIPE Deaggregation factor: 2.10 Prefixes being announced from the RIPE address blocks: 256705 Unique aggregates announced from the RIPE address blocks: 160488 RIPE Region origin ASes present in the Internet Routing Table: 28493 RIPE Prefixes per ASN: 9.01 RIPE Region origin ASes announcing only one prefix: 12114 RIPE Region transit ASes present in the Internet Routing Table: 3936 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 37 Number of RIPE region 32-bit ASNs visible in the Routing Table: 11457 Number of RIPE addresses announced to Internet: 714615424 Equivalent to 42 /8s, 152 /16s and 42 /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, 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: 119594 Total LACNIC prefixes after maximum aggregation: 28735 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 118364 Unique aggregates announced from the LACNIC address blocks: 49362 LACNIC Region origin ASes present in the Internet Routing Table: 11047 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2668 LACNIC Region transit ASes present in the Internet Routing Table: 2340 Average LACNIC Region AS path length visible: 4.9 Max LACNIC Region AS path length visible: 55 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8886 Number of LACNIC addresses announced to Internet: 178433792 Equivalent to 10 /8s, 162 /16s and 175 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + 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: 30073 Total AfriNIC prefixes after maximum aggregation: 6016 AfriNIC Deaggregation factor: 5.00 Prefixes being announced from the AfriNIC address blocks: 39349 Unique aggregates announced from the AfriNIC address blocks: 12770 AfriNIC Region origin ASes present in the Internet Routing Table: 1807 AfriNIC Prefixes per ASN: 21.78 AfriNIC Region origin ASes announcing only one prefix: 631 AfriNIC Region transit ASes present in the Internet Routing Table: 352 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 28 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1147 Number of AfriNIC addresses announced to Internet: 107395840 Equivalent to 6 /8s, 102 /16s and 187 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 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 9751 8730 44 CHINAMOBILE-CN China Mobile Communicati 7545 5686 785 697 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4918 4192 75 ERX-CERNET-BKB China Education and Rese 18403 4333 347 25 FPT-AS-AP FPT Telecom Company, VN 7713 3600 1047 70 TELKOMNET-AS-AP PT Telekomunikasi Indon 9498 3381 494 247 BBIL-AP BHARTI Airtel Ltd., IN 45899 3264 1872 99 VNPT-AS-VN VNPT Corp, VN 7552 2987 1330 20 VIETEL-AS-AP Viettel Group, VN 24560 2616 853 365 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd 4766 2484 11259 585 KIXS-AS-KR Korea Telecom, KR 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 9350 11143 3300 AMAZON-02, US 11492 4559 302 677 CABLEONE, US 7155 4175 288 98 VIASAT-SP-BACKBONE, US 6327 3559 1320 68 SHAW, CA 22773 3510 3055 301 ASN-CXA-ALL-CCI-22773-RDC, US 749 3159 54932 2411 DNIC-AS-00749, US 16625 3144 1393 2310 AKAMAI-AS, US 367 3010 3861 1416 DNIC-ASBLK-00306-00371, US 396982 2722 3631 374 GOOGLE-CLOUD-PLATFORM, US 7018 2584 23619 1601 ATT-INTERNET4, 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 7471 1714 146 UNI2-AS, ES 39891 4570 271 54 ALJAWWALSTC-AS, SA 20940 4010 3397 142 AKAMAI-ASN1, NL 9009 3458 299 1612 M247, RO 8551 3433 368 34 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 12389 2946 2296 918 ROSTELECOM-AS, RU 34984 2321 361 589 TELLCOM-AS, TR 13188 1607 100 26 TRIOLAN, UA 58224 1602 895 608 TCI, IR 8452 1527 1852 14 TE-AS TE-AS, EG 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 12075 3376 603 UNINET, MX 10620 3528 499 871 Telmex Colombia S.A., CO 13999 2469 337 645 Mega Cable, S.A. de C.V., MX 11830 2009 369 64 Instituto Costarricense de Electricidad 28573 1329 2321 248 Claro NXT Telecomunicacoes Ltda, BR 3816 1302 781 197 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 6503 1250 342 505 Axtel, S.A.B. de C.V., MX 6147 1082 369 22 Telefonica del Peru S.A.A., PE 11664 1080 173 437 Techtel LMDS Comunicaciones Interactiva 26615 1040 2502 52 TIM SA, 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 24863 1600 389 16 LINKdotNET-AS, EG 24835 1548 545 28 RAYA-AS, EG 36992 1358 1518 280 ETISALAT-MISR, EG 36903 1248 553 98 MT-MPLS, MA 29571 1045 67 53 ORANGE-COTE-IVOIRE, CI 36935 935 521 43 Vodafone-, EG 6713 550 1861 34 IAM-AS, MA 15399 522 54 47 WANANCHI-, KE 37342 492 32 1 MOVITEL, MZ 24757 482 73 5 EthioNet-AS, ET 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 8151 12075 3376 603 UNINET, MX 9808 9751 8730 44 CHINAMOBILE-CN China Mobile Communicati 16509 9350 11143 3300 AMAZON-02, US 12479 7471 1714 146 UNI2-AS, ES 7545 5686 785 697 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4918 4192 75 ERX-CERNET-BKB China Education and Rese 39891 4570 271 54 ALJAWWALSTC-AS, SA 11492 4559 302 677 CABLEONE, US 18403 4333 347 25 FPT-AS-AP FPT Telecom Company, VN 7155 4175 288 98 VIASAT-SP-BACKBONE, US Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 9751 9707 CHINAMOBILE-CN China Mobile Communications Grou 12479 7471 7325 UNI2-AS, ES 16509 9350 6050 AMAZON-02, US 7545 5686 4989 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4918 4843 ERX-CERNET-BKB China Education and Research Net 39891 4570 4516 ALJAWWALSTC-AS, SA 18403 4333 4308 FPT-AS-AP FPT Telecom Company, VN 7155 4175 4077 VIASAT-SP-BACKBONE, US 11492 4559 3882 CABLEONE, US 20940 4010 3868 AKAMAI-ASN1, NL 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 65536 DOCUMENT 5.102.30.0/24 65512 -Private Use AS-, ZZ 33492 UNALLOCATED 8.6.184.0/23 33650 COMCAST-33650, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-DDOS-M 40493 UNALLOCATED 8.17.26.0/24 3356 LEVEL3, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US 396894 UNALLOCATED 8.28.201.0/24 46887 LIGHTOWER, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, 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 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.176.160.0/24 Origin: 397327 RESERVED, ZZ 23.176.160.0/24 Transit: 19108 SUDDENLINK-COMMUNICATIONS, US 23.189.192.0/24 Origin: 27593 RESERVED, ZZ 23.189.192.0/24 Transit: 174 COGENT-174, US 36.255.139.0/24 Origin: 56050 NEW-SHINE-INTERNET-TH 134 Yenchit Road, 36.255.139.0/24 Transit: 58913 HCL-TH 4819 Supapong 3 Alley, Srinakarin 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 /10:38 /11:99 /12:298 /13:582 /14:1194 /15:2060 /16:13465 /17:8298 /18:13834 /19:25150 /20:44384 /21:51581 /22:110716 /23:99682 /24:563499 /25:732 /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 6565 7471 UNI2-AS, ES 8151 6097 12075 UNINET, MX 11492 3472 4559 CABLEONE, US 6327 3367 3559 SHAW, CA 39891 3324 4570 ALJAWWALSTC-AS, SA 7155 3122 4175 VIASAT-SP-BACKBONE, US 8551 2910 3433 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 22773 2563 3510 ASN-CXA-ALL-CCI-22773-RDC, US 30036 2136 2481 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2121 3528 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2261 2:1430 3:276 4:5 5:4390 6:162 7:6 8:1533 9:1 11:172 12:1494 13:375 14:2322 15:303 16:206 17:364 18:684 20:319 21:4 22:188 23:6511 24:2571 25:2 27:2520 29:19 31:2538 32:58 34:32 35:118 36:2031 37:4453 38:5678 39:878 40:149 41:3984 42:2076 43:2323 44:330 45:16693 46:4397 47:373 49:1861 50:1885 51:573 52:1593 54:393 55:877 56:5 57:127 58:1899 59:1177 60:1007 61:2561 62:2731 63:1903 64:5478 65:2351 66:5036 67:3060 68:1354 69:4124 70:1190 71:605 72:2924 74:2637 75:1560 76:628 77:2329 78:1826 79:3019 80:2110 81:1848 82:1518 83:1311 84:1617 85:2980 86:781 87:1953 88:1239 89:3950 90:631 91:7879 92:2145 93:2647 94:3577 95:3994 96:1298 97:316 98:1084 99:738 100:96 101:1174 102:2953 103:32456 104:4793 105:592 106:982 107:2770 108:1140 109:4208 110:2134 111:3172 112:2082 113:1754 114:1726 115:1982 116:1935 117:2484 118:2741 119:1951 120:1806 121:1260 122:2632 123:2231 124:1629 125:2781 128:1485 129:916 130:1053 131:1978 132:828 133:407 134:1705 135:299 136:922 137:1037 138:2697 139:1581 140:1336 141:1331 142:1533 143:1521 144:1006 145:343 146:1986 147:1635 148:2458 149:2306 150:1009 151:1255 152:1839 153:525 154:5278 155:1382 156:2108 157:1356 158:1056 159:2209 160:2608 161:1604 162:3568 163:1631 164:1650 165:1864 166:1107 167:1764 168:3845 169:801 170:4678 171:965 172:3765 173:2999 174:958 175:1203 176:3628 177:4537 178:3525 179:2167 180:2272 181:3592 182:3408 183:2021 184:2274 185:20510 186:4770 187:4281 188:4075 189:3956 190:9306 191:1456 192:11021 193:8977 194:7317 195:5209 196:3131 197:2471 198:6039 199:6535 200:8084 201:6234 202:10598 203:10050 204:4575 205:3703 206:4434 207:3507 208:4112 209:4921 210:4522 211:2545 212:4245 213:3386 214:1116 215:70 216:6727 217:2750 218:1325 219:586 220:2030 221:1003 222:870 223:2216 End of report

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Happy Thanksgiving! VIDEO | Highlight Reel of NANOG 89 + More!
by Nanog News 23 Nov '23

23 Nov '23

*Happy Thanksgiving! * *We Are So Grateful for YOU! * Our community is what makes NANOG special. Thank you for being a valued part of our community. *Happy Thanksgiving from NANOG. * *NANOG 90 Registration is OPEN!* *Don't Miss Out on Discounted Early Registration* *REGISTER NOW * <https://nanog.org/events/nanog-90/register/> *VIDEO | Highlight Reel of NANOG 89* Watch the recap video of NANOG 89 San Diego. Experience what makes our community special + what it is like to attend a conference. *WATCH NOW * <https://nanog.org/stories/nanog-tv/nanog-89-recap/> *NANOG 90: Sponsorships Available!* *Invest in the Strength of the Community We Have Built* NANOG is, and always has been, dedicated to the people who make up our community. Our in-person conferences draw up to 1,500 individuals in multiple facets of network engineering, operations, and architecture, who gather with us in major cities across North America. * Contact Shawn Winstead swinstead(a)nanog.org <swinstead(a)nanog.org> for more details.*

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Incident with AMS-IX drops 7.5 Tbps of traffic
by Eric Kuhnke 23 Nov '23

23 Nov '23

https://www.ams-ix.net/ams/documentation/total-stats https://www.ams-ix.net/ams/outage-on-amsterdam-peering-platform

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Advantages and disadvantages of legacy assets
by Eric Dugas 23 Nov '23

23 Nov '23

Greetings! Let's say you inherit legacy assets (ASN & IPv4 netblock), what are the first advantages that come to mind (beside not having to pay annual fees). Any disadvantages? The ones I can think of is the lack of RIR routing security services (in the ARIN region at least). No IRR, no RPKI at all. Eric

9 15

Out of ideas - Comcast issue BGP peering with Tata
by Jamie Chetta 22 Nov '23

22 Nov '23

I am out of ideas on how to get this fixed. Long story short I am a customer of Comcast and am advertising my own /24 block I own through them. Comcast of course BGP peers with multiple ISPs. Other ISPs are accepting my prefix just fine, except Tata. This is causing random destinations to drop connectivity if Comcast routes it through them. Comcast has confirmed they are advertising my block to Tata and that the RPKI is good, however when you check the Tata looking glass you can see they're not accepting it. I've tried escalating within Comcast who refuses to contact Tata as they've validated the issue is not on their end but they agree with my assessment that Tata is not accepting the prefix for some reason. I've tried multiple email for Tata support (below), but they all circle around to a helpdesk who says I do not have a circuit with them so they cannot help me. Is there anyone from Tata willing to contact me off list to help sort this out? Or anyone with ideas on specifically why other ISPs are accepting my route but not Tata? It would be greatly appreciated. Emails I've tried Corporate Helpdesk corp.helpdesk(a)tatacommunications.com<mailto:corp.helpdesk@tatacommunications.com> Tata Communications IP Service Support( AS-6453) IPServiceSupport(a)tatacommunications.com<mailto:IPServiceSupport@tatacommunications.com> IPNOC (Tata Communications - AS6453) IPNOC(a)tatacommunications.com<mailto:IPNOC@tatacommunications.com> lg(a)as6453.net<mailto:lg@as6453.net> Response from Tata: "Acknowledge your email. However, since you are not associated with TCL we would not be in a position to help you on this. Request you to contact comcast for the assistance that you are seeking from us." Response from Comcast: "This was sent back to me as not us. Basically, it's not a RADB or RPKI issue. This is being accepted and re-advertised to TATA but not being accepted on their end. But another route that we checked off of that same SUR is being advertised the same way and accepted by them off pe12.350ecermak.il.ibone as an example of the TATA looking glass. I would suggest that you would probably need to work with other networks as to why those that are specific ones are not accepting the block but as previously mentioned it's not a RADB or RPKI issue and as a result not a Comcast issue."

9 9

100 KvA Chicago DC
by Alexandre Legrix 22 Nov '23

22 Nov '23

Hello Nanog We are looking for a private room in Chicago with ~100kVA of power capability. Equinix Cyrus and co are not very keen to answer this demand Does anyone have contacts please ? Best regards -- Alexandre

1 0

Re: Your Input Needed: Can ROA Replace LOA? ? Short Survey (7 mins)
by George Toma 21 Nov '23

21 Nov '23

There is IPV4 exhaustion and many ISPs lease IPV4 space from other entities, such as brokers and other providers. One of the biggest IPv4 lessors is Cogent. By Cogent having legacy IP space from IANA which it inherited when it acquired PSInet, Cogent was not required to sign a contract when RIR ARIN was created. Therefore, Cogent currently does not have and is not member of ARIN. It refuses to sign contract with ARIN and currently Cogent is not bound by this RUD rules and regulations. There is one downfall to not being ARIN member, Cogent cannot currently issue ROAs or RPKIs. They only update RIR in ROADB database for the leased out IP addresses. By implicitly requiring ROA or RPKI for IPv4 space leased from Covent, about 70% of small ISPs that were created after IPv4 space exhaustion, would not be able to route their IPV4 traffic, because currently they lease IPv4 space from Cogent, and as we mentioned, by Cogent refusing to become ARIN member, it cannot issue ROAs or RPKIs, and therefore ISPs using this leased IPV4 space can only use LOAs for validation.

3 2

DoD contact
by Scott Q. 21 Nov '23

21 Nov '23

Can anyone recommend a preferred method for contacting the network folks at the DoD ? It seems they blanket banned large swaths of our upstream provider ( Aptum AS 13768 ) which includes all of our subnets as well. We can't connect to any IP that they manage which includes DNS resolution for .mil , mail service, etc. I tried reaching out ( and Aptum as well ) to disa.columbus.ns.mbx.hostmaster-dod-nic(a)mail.mil from an external address and although the e-mail didn't bounce, we also didn't receive any answer for a few days now. Is there another way to get in touch with them ? Thanks! Scott

2 1

Re: Advantages and disadvantages of legacy assets
by Rubens Kuhl 20 Nov '23

20 Nov '23

On Mon, Nov 20, 2023 at 4:15 PM Lukas Tribus <lukas(a)ltri.eu> wrote: > > On Mon, 20 Nov 2023 at 20:08, Rubens Kuhl <rubensk(a)gmail.com> wrote: > > > > You can get IRR from RADB or AltDB. > > Which is not going to be useful forever ... see [1]: > > > Please note that 'route' and 'route6' objects created after 2023-Aug-15 > > in non-authoritative registries like RADB, NTTCOM, ALTDB won't be > > processed. > > > > > [1] https://lg.as6453.net/doc/cust-routing-policy.html First time I see a Tier-1 complaining about non-authoritative IRR. I wonder what they do with IRR sources that do validate although not being run by a RIR/NIR, like TC. Rubens

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BGP-iSec: Improved Security of Internet Routing Against Post-ROV Attacks
by Amir Herzberg 20 Nov '23

20 Nov '23

Hi NANOGers, We will present our new work, titled: `BGP-iSec: Improved Security of Internet Routing Against Post-ROV Attacks', in NDSS'24. If you're interested in security of Internet routing (BGP), and want a copy, see URL below, drop me a message/email - or see us in the conference - or just read the final version. Available from: https://www.researchgate.net/publication/375553362_BGP-iSec_Improved_Securi… -- Amir Herzberg Comcast professor of Security Innovations, Computer Science and Engineering, University of Connecticut Homepage: https://sites.google.com/site/amirherzberg/home `Applied Introduction to Cryptography' textbook and lectures: https://sites.google.com/site/amirherzberg/cybersecurity

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