IPv4 R&E Routing Table Report 21:10 GMT Tue 28 Oct, 2025 IPv4 BGP Table (Global) as seen at AARNET (Brisbane). Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/AARNET/ Analysis Summary ---------------- BGP routing table entries examined: 1013414 Prefixes after maximum aggregation (per Origin AS): 392833 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498983 Number of IPv4 prefixes with a valid ROA: 583379 Number of IPv4 prefixes with an invalid ROA: 130 Number of IPv4 prefixes with no ROA: 429905 Total ASes present in the Internet Routing Table: 77495 Prefixes per ASN: 13.08 Origin-only ASes present in the Internet Routing Table: 66347 Origin ASes announcing only one prefix: 27121 Transit ASes present in the Internet Routing Table: 11148 Transit-only ASes present in the Internet Routing Table: 551 Paths with bogon ASNs present in the IPv4 Routing Table: 5 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 52 Max AS path prepend of ASN (152048) 40 Prefixes from unregistered ASNs in the Routing Table: 989 Number of instances of unregistered ASNs: 1018 Number of 32-bit ASNs allocated by the RIRs: 47817 Number of 32-bit ASNs visible in the Routing Table: 39226 Prefixes from 32-bit ASNs in the Routing Table: 213963 Number of bogon 32-bit ASNs visible in the Routing Table: 68 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 449 Number of addresses announced to Internet: 3113329152 Equivalent to 185 /8s, 145 /16s and 162 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 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: 331025 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270209 Total APNIC prefixes after maximum aggregation: 80432 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 260017 Unique aggregates announced from the APNIC address blocks: 106027 APNIC Region origin ASes present in the Internet Routing Table: 14846 APNIC Prefixes per ASN: 17.51 APNIC Region origin ASes announcing only one prefix: 4522 APNIC Region transit ASes present in the Internet Routing Table: 1990 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 42 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10404 Number of APNIC addresses announced to Internet: 751602944 Equivalent to 44 /8s, 204 /16s and 141 /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: 300349 Total ARIN prefixes after maximum aggregation: 135132 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 301154 Unique aggregates announced from the ARIN address blocks: 144784 ARIN Region origin ASes present in the Internet Routing Table: 19374 ARIN Prefixes per ASN: 15.54 ARIN Region origin ASes announcing only one prefix: 7107 ARIN Region transit ASes present in the Internet Routing Table: 1991 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5395 Number of ARIN addresses announced to Internet: 1353808640 Equivalent to 80 /8s, 177 /16s and 123 /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: 281132 Total RIPE prefixes after maximum aggregation: 139282 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280895 Unique aggregates announced from the RIPE address blocks: 181527 RIPE Region origin ASes present in the Internet Routing Table: 29099 RIPE Prefixes per ASN: 9.65 RIPE Region origin ASes announcing only one prefix: 12089 RIPE Region transit ASes present in the Internet Routing Table: 4038 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12791 Number of RIPE addresses announced to Internet: 733121024 Equivalent to 43 /8s, 178 /16s and 138 /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: 125308 Total LACNIC prefixes after maximum aggregation: 30413 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121396 Unique aggregates announced from the LACNIC address blocks: 49498 LACNIC Region origin ASes present in the Internet Routing Table: 11316 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2677 LACNIC Region transit ASes present in the Internet Routing Table: 2557 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9291 Number of LACNIC addresses announced to Internet: 170761216 Equivalent to 10 /8s, 45 /16s and 156 /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: 35427 Total AfriNIC prefixes after maximum aggregation: 6911 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 49502 Unique aggregates announced from the AfriNIC address blocks: 16762 AfriNIC Region origin ASes present in the Internet Routing Table: 1984 AfriNIC Prefixes per ASN: 24.95 AfriNIC Region origin ASes announcing only one prefix: 726 AfriNIC Region transit ASes present in the Internet Routing Table: 381 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 42 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1345 Number of AfriNIC addresses announced to Internet: 103772416 Equivalent to 6 /8s, 47 /16s and 113 /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 13343 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6131 834 592 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4488 537 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4398 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3985 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3715 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3302 1868 98 VNPT-AS-VN VNPT Corp, VN 56046 3244 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2935 863 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2471 272 1911 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14403 41101 5376 AMAZON-02, US 11492 4771 316 803 CABLEONE, US 22773 4644 3107 388 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3860 286 85 VIASAT-SP-BACKBONE, US 6327 3685 1320 82 SHAW, CA 396982 3280 4826 471 GOOGLE-CLOUD-PLATFORM, US 749 3216 54766 2467 DNIC-AS-00749, US 4155 3136 243 1751 USDA-1, US 16625 2991 1277 2184 AKAMAI-AS, US 174 2921 8766 836 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7322 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 4025 3395 124 AKAMAI-ASN1, NL 9009 4011 377 2283 M247, RO 12389 3095 2307 828 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2505 177 1814 CDNEXT, GB 34984 2416 363 577 TELLCOM-AS, TR 203020 1722 206 1003 HOSTROYALE, IN 8452 1670 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12471 3301 570 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2510 511 350 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1374 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1282 278 31 Techtel LMDS Comunicaciones Interactivas 6147 1281 371 23 Telefonica del Peru S.A.A., PE 22884 1061 70 365 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1022 2486 56 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1963 630 32 RAYA-AS, EG 36992 1678 1509 399 ETISALAT-MISR, EG 24863 1262 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1189 102 52 ORANGE-COTE-IVOIRE, CI 36935 1119 523 47 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 558 82 3 KENET-AS, KE 15399 544 57 55 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14403 41101 5376 AMAZON-02, US 9808 13343 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12471 3301 570 UNINET, MX 12479 7322 1711 149 UNI2-AS, ES 7545 6131 834 592 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4771 316 803 CABLEONE, US 22773 4644 3107 388 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4488 537 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4398 347 24 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13343 13226 CHINAMOBILE-CN China Mobile Communications Grou 8151 12471 11901 UNINET, MX 12479 7322 7173 UNI2-AS, ES 7545 6131 5539 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4398 4374 FPT-AS-AP FPT Telecom Company, VN 22773 4644 4256 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4488 4177 BBIL-AP BHARTI Airtel Ltd., IN 11492 4771 3968 CABLEONE, US 7552 3985 3957 VIETEL-AS-AP Viettel Group, VN Complete listing at https://bgp.nsrc.org/REN/AARNET/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 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 397015 UNALLOCATED 8.44.246.0/24 12025 IMDC-AS12025, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS 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 23.140.216.0/24 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 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE Complete listing at https://bgp.nsrc.org/REN/AARNET/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- !!Default route being announced!! /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:41 /11:93 /12:300 /13:583 /14:1202 /15:2129 /16:13806 /17:8220 /18:13516 /19:24726 /20:44413 /21:52114 /22:112970 /23:104735 /24:634535 /25:0 /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 6670 12471 UNINET, MX 12479 6281 7322 UNI2-AS, ES 11492 3585 4771 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3474 3685 SHAW, CA 22773 2995 4644 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2819 3860 VIASAT-SP-BACKBONE, US 16509 2425 14403 AMAZON-02, US 30036 2300 2642 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3456 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/AARNET/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2433 2:1562 3:963 4:10 5:4876 6:170 7:6 8:1507 9:6 11:172 12:1238 13:549 14:2657 15:402 16:303 17:388 18:906 20:580 21:4 22:188 23:8091 24:2604 25:2 27:2817 29:19 31:3355 32:31 33:1 34:81 35:275 36:4502 37:4547 38:9505 39:1097 40:466 41:4312 42:1936 43:2776 44:401 45:19174 46:5196 47:370 49:2126 50:2055 51:596 52:1629 54:359 55:1105 56:11 57:288 58:2290 59:1304 60:1195 61:2929 62:3091 63:1766 64:5855 65:2127 66:5897 67:3240 68:1484 69:4150 70:1035 71:637 72:2985 74:2861 75:1511 76:601 77:2763 78:1921 79:1755 80:2235 81:2126 82:3451 83:1468 84:1980 85:3587 86:1101 87:2142 88:1362 89:4519 90:815 91:8400 92:2806 93:2991 94:4153 95:4512 96:1489 97:311 98:948 99:754 100:71 101:1114 102:4222 103:32250 104:5440 105:784 106:899 107:2791 108:1207 109:4206 110:2248 111:3834 112:2734 113:1874 114:2083 115:2286 116:2095 117:3054 118:3072 119:1999 120:2344 121:1501 122:2813 123:2260 124:1659 125:2891 126:124 128:1605 129:965 130:1436 131:2203 132:792 133:461 134:1625 135:365 136:1487 137:1333 138:2838 139:1588 140:1641 141:1561 142:2234 143:2102 144:1309 145:627 146:2189 147:2129 148:2760 149:2892 150:1283 151:2635 152:2222 153:648 154:8158 155:2205 156:3200 157:2005 158:1431 159:2605 160:3649 161:2005 162:3973 163:2313 164:1953 165:2561 166:1512 167:2105 168:3783 169:780 170:5405 171:1058 172:4492 173:3426 174:903 175:1343 176:3756 177:4746 178:4311 179:2294 180:2745 181:4295 182:3766 183:2563 184:2072 185:21686 186:5427 187:4706 188:4387 189:4446 190:9717 191:1563 192:11430 193:9498 194:7832 195:5587 196:3265 197:3229 198:6262 199:8849 200:8220 201:6384 202:10489 203:10645 204:4638 205:3704 206:4408 207:3867 208:4266 209:5425 210:4762 211:2687 212:4889 213:3929 214:1040 215:53 216:7160 217:3397 218:1578 219:398 220:2196 221:1260 222:756 223:3108 End of report