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September 2023

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Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 01 Sep '23

01 Sep '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 02 Sep, 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: 927029 Prefixes after maximum aggregation (per Origin AS): 352283 Deaggregation factor: 2.63 Unique aggregates announced (without unneeded subnets): 452648 Total ASes present in the Internet Routing Table: 74745 Prefixes per ASN: 12.40 Origin-only ASes present in the Internet Routing Table: 64206 Origin ASes announcing only one prefix: 26346 Transit ASes present in the Internet Routing Table: 10539 Transit-only ASes present in the Internet Routing Table: 456 Average AS path length visible in the Internet Routing Table: 4.2 Max AS path length visible: 132 Max AS path prepend of ASN ( 37447) 129 Prefixes from unregistered ASNs in the Routing Table: 1011 Number of instances of unregistered ASNs: 1013 Number of 32-bit ASNs allocated by the RIRs: 42560 Number of 32-bit ASNs visible in the Routing Table: 35031 Prefixes from 32-bit ASNs in the Routing Table: 174588 Number of bogon 32-bit ASNs visible in the Routing Table: 42 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 546 Number of addresses announced to Internet: 3056681728 Equivalent to 182 /8s, 49 /16s and 67 /24s Percentage of available address space announced: 82.6 Percentage of allocated address space announced: 82.6 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.5 Total number of prefixes smaller than registry allocations: 308479 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 246230 Total APNIC prefixes after maximum aggregation: 70545 APNIC Deaggregation factor: 3.49 Prefixes being announced from the APNIC address blocks: 239962 Unique aggregates announced from the APNIC address blocks: 98716 APNIC Region origin ASes present in the Internet Routing Table: 13608 APNIC Prefixes per ASN: 17.63 APNIC Region origin ASes announcing only one prefix: 4036 APNIC Region transit ASes present in the Internet Routing Table: 1798 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 24 Number of APNIC region 32-bit ASNs visible in the Routing Table: 8936 Number of APNIC addresses announced to Internet: 772978304 Equivalent to 46 /8s, 18 /16s and 182 /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: 272068 Total ARIN prefixes after maximum aggregation: 123862 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 274437 Unique aggregates announced from the ARIN address blocks: 131388 ARIN Region origin ASes present in the Internet Routing Table: 19097 ARIN Prefixes per ASN: 14.37 ARIN Region origin ASes announcing only one prefix: 6956 ARIN Region transit ASes present in the Internet Routing Table: 1957 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 4826 Number of ARIN addresses announced to Internet: 1280142336 Equivalent to 76 /8s, 77 /16s and 108 /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: 259870 Total RIPE prefixes after maximum aggregation: 122697 RIPE Deaggregation factor: 2.12 Prefixes being announced from the RIPE address blocks: 256375 Unique aggregates announced from the RIPE address blocks: 159997 RIPE Region origin ASes present in the Internet Routing Table: 28383 RIPE Prefixes per ASN: 9.03 RIPE Region origin ASes announcing only one prefix: 12032 RIPE Region transit ASes present in the Internet Routing Table: 3929 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 34 Number of RIPE region 32-bit ASNs visible in the Routing Table: 11305 Number of RIPE addresses announced to Internet: 716752256 Equivalent to 42 /8s, 184 /16s and 197 /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: 118155 Total LACNIC prefixes after maximum aggregation: 28527 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 117183 Unique aggregates announced from the LACNIC address blocks: 49270 LACNIC Region origin ASes present in the Internet Routing Table: 11024 LACNIC Prefixes per ASN: 10.63 LACNIC Region origin ASes announcing only one prefix: 2701 LACNIC Region transit ASes present in the Internet Routing Table: 2316 Average LACNIC Region AS path length visible: 4.9 Max LACNIC Region AS path length visible: 70 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8838 Number of LACNIC addresses announced to Internet: 178604032 Equivalent to 10 /8s, 165 /16s and 72 /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: 29695 Total AfriNIC prefixes after maximum aggregation: 5954 AfriNIC Deaggregation factor: 4.99 Prefixes being announced from the AfriNIC address blocks: 38526 Unique aggregates announced from the AfriNIC address blocks: 12822 AfriNIC Region origin ASes present in the Internet Routing Table: 1785 AfriNIC Prefixes per ASN: 21.58 AfriNIC Region origin ASes announcing only one prefix: 621 AfriNIC Region transit ASes present in the Internet Routing Table: 332 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 132 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1126 Number of AfriNIC addresses announced to Internet: 107749888 Equivalent to 6 /8s, 108 /16s and 34 /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 9498 8729 40 CHINAMOBILE-CN China Mobile Communicati 7545 5726 784 688 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4867 4192 75 ERX-CERNET-BKB China Education and Rese 18403 4330 347 25 FPT-AS-AP FPT Telecom Company, VN 7713 3596 1043 63 TELKOMNET-AS-AP PT Telekomunikasi Indon 45899 3339 1840 97 VNPT-AS-VN VNPT Corp, VN 9498 3116 498 251 BBIL-AP BHARTI Airtel Ltd., IN 7552 2935 1330 20 VIETEL-AS-AP Viettel Group, VN 4766 2559 11271 594 KIXS-AS-KR Korea Telecom, KR 24560 2490 847 397 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd 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 9016 10983 3266 AMAZON-02, US 11492 4523 300 648 CABLEONE, US 7155 4179 288 101 VIASAT-SP-BACKBONE, US 22773 3559 3056 314 ASN-CXA-ALL-CCI-22773-RDC, US 6327 3535 1319 66 SHAW, CA 749 3146 54960 2398 DNIC-AS-00749, US 16625 3042 1467 2297 AKAMAI-AS, US 367 2966 3835 1395 DNIC-ASBLK-00306-00371, US 396982 2688 3596 387 GOOGLE-CLOUD-PLATFORM, US 30036 2498 358 376 MEDIACOM-ENTERPRISE-BUSINESS, 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 7346 1713 145 UNI2-AS, ES 39891 4897 290 61 ALJAWWALSTC-AS, SA 20940 4090 3398 153 AKAMAI-ASN1, NL 8551 3459 368 34 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 12389 2983 2296 916 ROSTELECOM-AS, RU 9009 2674 247 1381 M247, RO 34984 2328 362 596 TELLCOM-AS, TR 58224 1749 933 521 TCI, IR 13188 1606 100 27 TRIOLAN, UA 61317 1510 101 1176 ASDETUK www.heficed.com, US 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 11521 3362 597 UNINET, MX 10620 3537 506 849 Telmex Colombia S.A., CO 13999 2453 364 642 Mega Cable, S.A. de C.V., MX 11830 1996 369 64 Instituto Costarricense de Electricidad 28573 1317 2324 232 Claro NXT Telecomunicacoes Ltda, BR 6503 1302 344 510 Axtel, S.A.B. de C.V., MX 3816 1294 764 196 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 11664 1121 182 434 Techtel LMDS Comunicaciones Interactiva 6147 1113 370 22 Telefonica del Peru S.A.A., PE 26615 1015 2501 49 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 1593 393 19 LINKdotNET-AS, EG 24835 1457 497 26 RAYA-AS, EG 36992 1356 1518 281 ETISALAT-MISR, EG 36903 1242 550 99 MT-MPLS, MA 29571 1047 67 45 ORANGE-COTE-IVOIRE, CI 36935 781 520 36 Vodafone-, EG 6713 551 1861 34 IAM-AS, MA 15399 533 55 51 WANANCHI-, KE 37342 465 32 1 MOVITEL, MZ 24757 458 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 11521 3362 597 UNINET, MX 9808 9498 8729 40 CHINAMOBILE-CN China Mobile Communicati 16509 9016 10983 3266 AMAZON-02, US 12479 7346 1713 145 UNI2-AS, ES 7545 5726 784 688 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 290 61 ALJAWWALSTC-AS, SA 4538 4867 4192 75 ERX-CERNET-BKB China Education and Rese 11492 4523 300 648 CABLEONE, US 18403 4330 347 25 FPT-AS-AP FPT Telecom Company, VN 7155 4179 288 101 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 9498 9458 CHINAMOBILE-CN China Mobile Communications Grou 12479 7346 7201 UNI2-AS, ES 16509 9016 5750 AMAZON-02, US 7545 5726 5038 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4897 4836 ALJAWWALSTC-AS, SA 4538 4867 4792 ERX-CERNET-BKB China Education and Research Net 18403 4330 4305 FPT-AS-AP FPT Telecom Company, VN 7155 4179 4078 VIASAT-SP-BACKBONE, US 20940 4090 3937 AKAMAI-ASN1, NL 11492 4523 3875 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 33492 UNALLOCATED 8.6.184.0/23 33650 COMCAST-33650, US 33123 UNALLOCATED 8.10.69.0/24 11168 SCC, 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 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, 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 23.161.72.0/24 Origin: 18646 BITMAX, US 23.161.72.0/24 Transit: 1299 TWELVE99 Arelion, fka Telia Carrier, SE 23.176.160.0/24 Origin: 397327 RESERVED, ZZ 23.176.160.0/24 Transit: 19108 SUDDENLINK-COMMUNICATIONS, 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 /10:39 /11:102 /12:298 /13:579 /14:1197 /15:2067 /16:13508 /17:8287 /18:13858 /19:25153 /20:44468 /21:51074 /22:109927 /23:99012 /24:556687 /25:743 /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 6432 7346 UNI2-AS, ES 8151 5678 11521 UNINET, MX 39891 3632 4897 ALJAWWALSTC-AS, SA 11492 3433 4523 CABLEONE, US 6327 3345 3535 SHAW, CA 7155 3124 4179 VIASAT-SP-BACKBONE, US 8551 2927 3459 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 22773 2603 3559 ASN-CXA-ALL-CCI-22773-RDC, US 30036 2156 2498 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2100 3537 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2255 2:1388 3:250 4:5 5:4550 6:137 7:6 8:1550 9:1 11:172 12:1510 13:371 14:2313 15:302 16:196 17:370 18:633 20:281 21:4 22:188 23:6404 24:2503 25:6 27:2503 29:19 31:2531 32:80 34:25 35:118 36:1997 37:4523 38:5188 39:869 40:147 41:4015 42:2107 43:2283 44:322 45:16601 46:4279 47:386 49:1806 50:1866 51:595 52:1597 54:392 55:964 56:8 57:121 58:1865 59:1173 60:999 61:2499 62:2684 63:1928 64:5581 65:2325 66:4935 67:3029 68:1329 69:4139 70:1192 71:657 72:2962 74:2619 75:1565 76:623 77:2332 78:1834 79:2985 80:2113 81:1830 82:1460 83:1286 84:1516 85:2977 86:749 87:1991 88:1174 89:3837 90:617 91:7809 92:2066 93:2625 94:3527 95:4010 96:1296 97:321 98:1077 99:734 100:90 101:1078 102:2883 103:31999 104:4592 105:558 106:891 107:2599 108:1136 109:4229 110:2133 111:3185 112:2068 113:1812 114:1660 115:1988 116:1914 117:2440 118:2687 119:1988 120:1809 121:1152 122:2584 123:2186 124:1624 125:2522 128:1459 129:929 130:1038 131:1956 132:819 133:419 134:1791 135:307 136:911 137:970 138:2626 139:1584 140:1255 141:1294 142:1489 143:1483 144:998 145:346 146:1947 147:1607 148:2454 149:2175 150:867 151:1232 152:1874 153:512 154:4887 155:1394 156:1962 157:1323 158:1078 159:2232 160:2582 161:1587 162:3517 163:1593 164:1711 165:1827 166:1027 167:1733 168:3723 169:902 170:4669 171:872 172:3681 173:2962 174:990 175:1201 176:3790 177:4447 178:3549 179:2120 180:2427 181:3448 182:3356 183:1990 184:2286 185:20515 186:4720 187:4112 188:4158 189:3715 190:9263 191:1345 192:10959 193:8956 194:7264 195:5209 196:3108 197:2445 198:6010 199:6117 200:7955 201:6025 202:10548 203:10008 204:4550 205:3655 206:4327 207:3472 208:4148 209:4935 210:4473 211:2539 212:4230 213:3410 214:1094 215:59 216:6694 217:2771 218:1286 219:574 220:2032 221:978 222:837 223:2169 End of report

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Re: Lossy cogent p2p experiences?
by Saku Ytti 01 Sep '23

01 Sep '23

On Fri, 1 Sept 2023 at 18:37, Lukas Tribus <lukas(a)ltri.eu> wrote: > On the hand a workaround at the edge at least for EoMPLS would be to > enable control-word. Juniper LSR can actually do heuristics on pseudowires with CW. -- ++ytti

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