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March 2024

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Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 01 Mar '24

01 Mar '24

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 Mar, 2024 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: 941586 Prefixes after maximum aggregation (per Origin AS): 358304 Deaggregation factor: 2.63 Unique aggregates announced (without unneeded subnets): 458218 Total ASes present in the Internet Routing Table: 75469 Prefixes per ASN: 12.48 Origin-only ASes present in the Internet Routing Table: 64725 Origin ASes announcing only one prefix: 26605 Transit ASes present in the Internet Routing Table: 10744 Transit-only ASes present in the Internet Routing Table: 499 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 55 Max AS path prepend of ASN (265020) 50 Prefixes from unregistered ASNs in the Routing Table: 1089 Number of instances of unregistered ASNs: 1091 Number of 32-bit ASNs allocated by the RIRs: 43735 Number of 32-bit ASNs visible in the Routing Table: 35974 Prefixes from 32-bit ASNs in the Routing Table: 182089 Number of bogon 32-bit ASNs visible in the Routing Table: 38 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 551 Number of addresses announced to Internet: 3041740160 Equivalent to 181 /8s, 77 /16s and 69 /24s Percentage of available address space announced: 82.2 Percentage of allocated address space announced: 82.2 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: 309583 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 252177 Total APNIC prefixes after maximum aggregation: 73037 APNIC Deaggregation factor: 3.45 Prefixes being announced from the APNIC address blocks: 244814 Unique aggregates announced from the APNIC address blocks: 100197 APNIC Region origin ASes present in the Internet Routing Table: 14011 APNIC Prefixes per ASN: 17.47 APNIC Region origin ASes announcing only one prefix: 4234 APNIC Region transit ASes present in the Internet Routing Table: 1873 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: 9390 Number of APNIC addresses announced to Internet: 774622080 Equivalent to 46 /8s, 43 /16s and 203 /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: 273801 Total ARIN prefixes after maximum aggregation: 123627 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 278705 Unique aggregates announced from the ARIN address blocks: 132679 ARIN Region origin ASes present in the Internet Routing Table: 19110 ARIN Prefixes per ASN: 14.58 ARIN Region origin ASes announcing only one prefix: 6966 ARIN Region transit ASes present in the Internet Routing Table: 1980 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: 4853 Number of ARIN addresses announced to Internet: 1270281728 Equivalent to 75 /8s, 182 /16s and 246 /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: 263274 Total RIPE prefixes after maximum aggregation: 125915 RIPE Deaggregation factor: 2.09 Prefixes being announced from the RIPE address blocks: 258093 Unique aggregates announced from the RIPE address blocks: 162145 RIPE Region origin ASes present in the Internet Routing Table: 28567 RIPE Prefixes per ASN: 9.03 RIPE Region origin ASes announcing only one prefix: 12129 RIPE Region transit ASes present in the Internet Routing Table: 3951 Average RIPE Region AS path length visible: 4.5 Max RIPE Region AS path length visible: 40 Number of RIPE region 32-bit ASNs visible in the Routing Table: 11640 Number of RIPE addresses announced to Internet: 712696320 Equivalent to 42 /8s, 122 /16s and 226 /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: 120862 Total LACNIC prefixes after maximum aggregation: 28951 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 119376 Unique aggregates announced from the LACNIC address blocks: 49521 LACNIC Region origin ASes present in the Internet Routing Table: 11056 LACNIC Prefixes per ASN: 10.80 LACNIC Region origin ASes announcing only one prefix: 2627 LACNIC Region transit ASes present in the Internet Routing Table: 2392 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: 8911 Number of LACNIC addresses announced to Internet: 177632000 Equivalent to 10 /8s, 150 /16s and 115 /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: 30383 Total AfriNIC prefixes after maximum aggregation: 6062 AfriNIC Deaggregation factor: 5.01 Prefixes being announced from the AfriNIC address blocks: 40047 Unique aggregates announced from the AfriNIC address blocks: 13231 AfriNIC Region origin ASes present in the Internet Routing Table: 1823 AfriNIC Prefixes per ASN: 21.97 AfriNIC Region origin ASes announcing only one prefix: 649 AfriNIC Region transit ASes present in the Internet Routing Table: 356 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 30 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1180 Number of AfriNIC addresses announced to Internet: 106194944 Equivalent to 6 /8s, 84 /16s and 104 /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 9817 8740 57 CHINAMOBILE-CN China Mobile Communicati 7545 5655 777 674 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4929 4192 75 ERX-CERNET-BKB China Education and Rese 18403 4534 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3874 1331 21 VIETEL-AS-AP Viettel Group, VN 7713 3592 1043 64 TELKOMNET-AS-AP PT Telekomunikasi Indon 9498 3510 497 252 BBIL-AP BHARTI Airtel Ltd., IN 45899 3288 1872 98 VNPT-AS-VN VNPT Corp, VN 24560 2746 862 372 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd 4766 2309 11259 574 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 9678 11266 3339 AMAZON-02, US 11492 4582 304 645 CABLEONE, US 7155 4181 288 96 VIASAT-SP-BACKBONE, US 22773 3613 3062 299 ASN-CXA-ALL-CCI-22773-RDC, US 6327 3597 1320 75 SHAW, CA 16625 3220 1404 2296 AKAMAI-AS, US 749 3183 54927 2435 DNIC-AS-00749, US 174 3110 6642 673 COGENT-174, US 367 2910 3647 1406 DNIC-ASBLK-00306-00371, US 396982 2760 3640 397 GOOGLE-CLOUD-PLATFORM, 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 7614 1714 147 UNI2-AS, ES 39891 4758 286 60 ALJAWWALSTC-AS, SA 20940 3895 3396 128 AKAMAI-ASN1, NL 9009 3278 285 1601 M247, RO 12389 2970 2303 906 ROSTELECOM-AS, RU 8551 2654 368 35 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 34984 2351 363 593 TELLCOM-AS, TR 13188 1607 100 26 TRIOLAN, UA 8452 1505 1852 14 TE-AS TE-AS, EG 44477 1489 97 708 STARK-INDUSTRIES, GB 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 12509 3356 603 UNINET, MX 10620 3524 496 890 Telmex Colombia S.A., CO 13999 2527 343 645 Mega Cable, S.A. de C.V., MX 11830 1999 369 64 Instituto Costarricense de Electricidad 28573 1342 2319 241 Claro NXT Telecomunicacoes Ltda, BR 3816 1310 787 197 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 6503 1213 349 490 Axtel, S.A.B. de C.V., MX 11664 1144 179 421 Techtel LMDS Comunicaciones Interactiva 6147 1088 369 22 Telefonica del Peru S.A.A., PE 22884 1069 114 377 TOTAL PLAY TELECOMUNICACIONES SA DE CV, 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 1550 545 28 RAYA-AS, EG 24863 1518 389 16 LINKdotNET-AS, EG 36992 1362 1519 281 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 29571 1159 74 61 ORANGE-COTE-IVOIRE, CI 36935 932 521 42 Vodafone-, EG 6713 554 1861 34 IAM-AS, MA 15399 530 55 53 WANANCHI-, KE 36914 486 82 3 KENET-AS, KE 24757 449 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 12509 3356 603 UNINET, MX 9808 9817 8740 57 CHINAMOBILE-CN China Mobile Communicati 16509 9678 11266 3339 AMAZON-02, US 12479 7614 1714 147 UNI2-AS, ES 7545 5655 777 674 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4929 4192 75 ERX-CERNET-BKB China Education and Rese 39891 4758 286 60 ALJAWWALSTC-AS, SA 11492 4582 304 645 CABLEONE, US 18403 4534 347 25 FPT-AS-AP FPT Telecom Company, VN 7155 4181 288 96 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 9817 9760 CHINAMOBILE-CN China Mobile Communications Grou 12479 7614 7467 UNI2-AS, ES 16509 9678 6339 AMAZON-02, US 7545 5655 4981 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4929 4854 ERX-CERNET-BKB China Education and Research Net 39891 4758 4698 ALJAWWALSTC-AS, SA 18403 4534 4509 FPT-AS-AP FPT Telecom Company, VN 7155 4181 4085 VIASAT-SP-BACKBONE, US 11492 4582 3937 CABLEONE, US 7552 3874 3853 VIETEL-AS-AP Viettel Group, VN 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 8.10.69.0/24 174 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 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 23.176.160.0/24 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 27.0.192.0/24 Origin: 136800 MOACKCOLTD-AS-AP MOACK.Co.LTD, KR 27.0.192.0/24 Transit: 6939 HURRICANE, 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 /10:37 /11:98 /12:299 /13:577 /14:1192 /15:2063 /16:13384 /17:8238 /18:13736 /19:24928 /20:44351 /21:51559 /22:110701 /23:98593 /24:571071 /25:729 /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 6729 7614 UNI2-AS, ES 8151 6464 12509 UNINET, MX 11492 3495 4582 CABLEONE, US 39891 3440 4758 ALJAWWALSTC-AS, SA 6327 3394 3597 SHAW, CA 7155 3125 4181 VIASAT-SP-BACKBONE, US 22773 2649 3613 ASN-CXA-ALL-CCI-22773-RDC, US 30036 2165 2509 MEDIACOM-ENTERPRISE-BUSINESS, US 8551 2130 2654 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 10620 2129 3524 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2317 2:1525 3:306 4:6 5:4499 6:161 7:6 8:1520 9:1 11:172 12:1469 13:390 14:2390 15:313 16:208 17:368 18:741 20:356 21:4 22:188 23:6628 24:2703 25:2 27:2571 29:19 31:2616 32:48 34:42 35:125 36:2183 37:4502 38:7054 39:893 40:140 41:4063 42:2189 43:2337 44:324 45:16923 46:4354 47:287 49:1932 50:1899 51:576 52:1582 54:309 55:887 56:5 57:149 58:2036 59:1181 60:1021 61:2591 62:2697 63:1905 64:5516 65:2325 66:4714 67:3050 68:1340 69:4061 70:1199 71:574 72:2899 74:2595 75:1553 76:634 77:2404 78:1839 79:2470 80:2143 81:1923 82:1498 83:1248 84:1654 85:3105 86:837 87:2221 88:1234 89:4015 90:685 91:7950 92:2194 93:2635 94:3655 95:4105 96:1287 97:313 98:1038 99:743 100:91 101:1174 102:3089 103:32531 104:4762 105:604 106:937 107:2764 108:1125 109:4040 110:2143 111:3218 112:2063 113:1824 114:1782 115:1967 116:1967 117:2646 118:2745 119:1953 120:1813 121:1332 122:2686 123:2228 124:1606 125:2871 126:28 128:1549 129:926 130:1089 131:1812 132:816 133:410 134:1709 135:311 136:920 137:1048 138:2793 139:1560 140:1375 141:1349 142:1557 143:1478 144:1023 145:345 146:2019 147:1706 148:2484 149:2560 150:1026 151:1323 152:1982 153:526 154:5752 155:1382 156:2097 157:1564 158:1099 159:2235 160:2604 161:1634 162:3599 163:1711 164:1623 165:2113 166:1071 167:1701 168:3962 169:792 170:4704 171:1017 172:3842 173:3030 174:904 175:1218 176:3648 177:4466 178:3562 179:2237 180:2364 181:3659 182:3447 183:2022 184:2266 185:20621 186:4835 187:4369 188:4030 189:4087 190:9286 191:1442 192:11004 193:9008 194:7451 195:5261 196:3135 197:2563 198:6005 199:7302 200:8071 201:6354 202:10478 203:10147 204:4572 205:3748 206:4498 207:3527 208:4166 209:5009 210:4647 211:2575 212:4292 213:3391 214:1108 215:44 216:6719 217:2811 218:1363 219:580 220:2056 221:1024 222:876 223:2237 End of report

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Leap Day
by Jay R. Ashworth 01 Mar '24

01 Mar '24

Late, just saw the posting on BlueSky: In the wake of NTP inventor Dave Mills' death, probably the next ranking topchimer is NIST's Judah Levine, and the New York Times interviewed him about why we have leap years, which makes sense; all the other news outlets had to make do with lower-ranking (and less well spoken) "time experts" (I'm lookin' at you, NPR...) https://www.nytimes.com/2024/02/29/science/leap-day-easter.html Cheers, -- jra -- Jay R. Ashworth Baylink jra(a)baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274

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