IPv4 R&E Routing Table Report 21:10 GMT Mon 20 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: 1011223 Prefixes after maximum aggregation (per Origin AS): 391877 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498081 Number of IPv4 prefixes with a valid ROA: 580560 Number of IPv4 prefixes with an invalid ROA: 126 Number of IPv4 prefixes with no ROA: 430537 Total ASes present in the Internet Routing Table: 77442 Prefixes per ASN: 13.06 Origin-only ASes present in the Internet Routing Table: 66318 Origin ASes announcing only one prefix: 27115 Transit ASes present in the Internet Routing Table: 11124 Transit-only ASes present in the Internet Routing Table: 563 Paths with bogon ASNs present in the IPv4 Routing Table: 45 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 55 Max AS path prepend of ASN (135823) 50 Prefixes from unregistered ASNs in the Routing Table: 962 Number of instances of unregistered ASNs: 1028 Number of 32-bit ASNs allocated by the RIRs: 47761 Number of 32-bit ASNs visible in the Routing Table: 39163 Prefixes from 32-bit ASNs in the Routing Table: 213636 Number of bogon 32-bit ASNs visible in the Routing Table: 148 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 435 Number of addresses announced to Internet: 3111874304 Equivalent to 185 /8s, 123 /16s and 111 /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: 330206 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269994 Total APNIC prefixes after maximum aggregation: 80206 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 259584 Unique aggregates announced from the APNIC address blocks: 105950 APNIC Region origin ASes present in the Internet Routing Table: 14839 APNIC Prefixes per ASN: 17.49 APNIC Region origin ASes announcing only one prefix: 4531 APNIC Region transit ASes present in the Internet Routing Table: 1977 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 55 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10396 Number of APNIC addresses announced to Internet: 751526656 Equivalent to 44 /8s, 203 /16s and 99 /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: 299245 Total ARIN prefixes after maximum aggregation: 134685 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300266 Unique aggregates announced from the ARIN address blocks: 144536 ARIN Region origin ASes present in the Internet Routing Table: 19351 ARIN Prefixes per ASN: 15.52 ARIN Region origin ASes announcing only one prefix: 7099 ARIN Region transit ASes present in the Internet Routing Table: 1986 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: 5374 Number of ARIN addresses announced to Internet: 1352823296 Equivalent to 80 /8s, 162 /16s and 114 /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: 280719 Total RIPE prefixes after maximum aggregation: 139045 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280712 Unique aggregates announced from the RIPE address blocks: 181277 RIPE Region origin ASes present in the Internet Routing Table: 29094 RIPE Prefixes per ASN: 9.65 RIPE Region origin ASes announcing only one prefix: 12108 RIPE Region transit ASes present in the Internet Routing Table: 4030 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 36 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12782 Number of RIPE addresses announced to Internet: 732816896 Equivalent to 43 /8s, 173 /16s and 230 /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: 125266 Total LACNIC prefixes after maximum aggregation: 30386 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121333 Unique aggregates announced from the LACNIC address blocks: 49466 LACNIC Region origin ASes present in the Internet Routing Table: 11303 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2665 LACNIC Region transit ASes present in the Internet Routing Table: 2552 Average LACNIC Region AS path length visible: 5.2 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9280 Number of LACNIC addresses announced to Internet: 170726400 Equivalent to 10 /8s, 45 /16s and 20 /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: 35037 Total AfriNIC prefixes after maximum aggregation: 6895 AfriNIC Deaggregation factor: 5.08 Prefixes being announced from the AfriNIC address blocks: 48892 Unique aggregates announced from the AfriNIC address blocks: 16468 AfriNIC Region origin ASes present in the Internet Routing Table: 1967 AfriNIC Prefixes per ASN: 24.86 AfriNIC Region origin ASes announcing only one prefix: 712 AfriNIC Region transit ASes present in the Internet Routing Table: 383 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: 1331 Number of AfriNIC addresses announced to Internet: 103750400 Equivalent to 6 /8s, 47 /16s and 27 /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 13840 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6180 834 600 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4390 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3979 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3686 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3294 1868 98 VNPT-AS-VN VNPT Corp, VN 56046 3163 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2931 863 502 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2507 516 1618 HUTCHISON-AS-AP HGC Global Communications 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 14302 41081 5363 AMAZON-02, US 11492 4771 322 787 CABLEONE, US 22773 4304 3086 367 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3684 1320 82 SHAW, CA 396982 3273 4825 466 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 4155 3108 241 1752 USDA-1, US 16625 3039 1301 2212 AKAMAI-AS, US 174 2927 8766 796 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 7381 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 4040 3395 126 AKAMAI-ASN1, NL 9009 3950 372 2238 M247, RO 12389 3137 2313 866 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2542 182 1849 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1719 205 1003 HOSTROYALE, IN 8452 1665 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 12412 3287 579 UNINET, MX 10620 3479 468 1087 Telmex Colombia S.A., CO 13999 2517 511 347 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1376 2435 257 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1280 371 23 Telefonica del Peru S.A.A., PE 11664 1253 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1064 71 367 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 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 1843 630 32 RAYA-AS, EG 36992 1513 1498 386 ETISALAT-MISR, EG 24863 1250 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1189 102 52 ORANGE-COTE-IVOIRE, CI 36935 1118 522 46 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 571 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 14302 41081 5363 AMAZON-02, US 9808 13840 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12412 3287 579 UNINET, MX 12479 7381 1711 149 UNI2-AS, ES 7545 6180 834 600 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4771 322 787 CABLEONE, US 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4390 347 24 FPT-AS-AP FPT Telecom Company, VN 22773 4304 3086 367 ASN-CXA-ALL-CCI-22773-RDC, US 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 13840 13723 CHINAMOBILE-CN China Mobile Communications Grou 8151 12412 11833 UNINET, MX 12479 7381 7232 UNI2-AS, ES 7545 6180 5580 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4390 4366 FPT-AS-AP FPT Telecom Company, VN 9498 4477 4165 BBIL-AP BHARTI Airtel Ltd., IN 11492 4771 3984 CABLEONE, US 7552 3979 3951 VIETEL-AS-AP Viettel Group, VN 22773 4304 3937 ASN-CXA-ALL-CCI-22773-RDC, US 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 3356 LEVEL3, 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 /14:1204 /15:2127 /16:13785 /17:8216 /18:13489 /19:24714 /20:44365 /21:52015 /22:112849 /23:104581 /24:632830 /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 6626 12412 UNINET, MX 12479 6349 7381 UNI2-AS, ES 11492 3584 4771 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3473 3684 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2649 4304 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2406 14302 AMAZON-02, US 30036 2295 2636 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3479 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) ---------------------------------------------- 1:2425 2:1565 3:938 4:10 5:4859 6:170 7:6 8:1518 9:6 11:172 12:1238 13:537 14:2649 15:402 16:301 17:386 18:905 20:578 21:4 22:188 23:8080 24:2609 25:2 27:2808 29:19 31:3329 32:31 33:1 34:81 35:272 36:4473 37:4549 38:9475 39:1107 40:469 41:4279 42:1954 43:2763 44:399 45:19139 46:5196 47:369 49:2096 50:2048 51:591 52:1630 54:353 55:1097 56:11 57:285 58:2280 59:1292 60:1189 61:2917 62:3087 63:1761 64:5805 65:2120 66:5582 67:3151 68:1475 69:4127 70:1034 71:635 72:2987 74:2833 75:1512 76:594 77:2762 78:1919 79:1750 80:2249 81:2141 82:3485 83:1481 84:1993 85:3573 86:1101 87:2146 88:1360 89:4505 90:814 91:8387 92:2812 93:2988 94:4159 95:4526 96:1489 97:313 98:949 99:751 100:71 101:1220 102:4197 103:32276 104:5451 105:790 106:895 107:2794 108:1201 109:4230 110:2241 111:3816 112:2706 113:1844 114:2069 115:2334 116:2085 117:3044 118:3035 119:1993 120:2303 121:1490 122:2811 123:2269 124:1652 125:2880 126:124 128:1607 129:962 130:1442 131:2175 132:790 133:461 134:1627 135:364 136:1493 137:1326 138:2830 139:1587 140:1642 141:1556 142:2171 143:2082 144:1279 145:628 146:2184 147:2137 148:2756 149:2931 150:1286 151:2631 152:2212 153:642 154:7863 155:2203 156:3174 157:2005 158:1447 159:2606 160:3645 161:1999 162:3957 163:2297 164:1949 165:2554 166:1563 167:2118 168:3815 169:781 170:5382 171:1061 172:4490 173:3429 174:905 175:1346 176:3749 177:4748 178:4306 179:2298 180:2739 181:4263 182:3749 183:2559 184:2090 185:21673 186:5365 187:4739 188:4384 189:4436 190:9712 191:1554 192:11417 193:9490 194:7820 195:5564 196:3257 197:3229 198:6247 199:8793 200:8188 201:6366 202:10479 203:10628 204:4632 205:3699 206:4433 207:3866 208:4251 209:5408 210:4744 211:2687 212:4878 213:3920 214:1030 215:53 216:7152 217:3368 218:1579 219:398 220:2193 221:1252 222:756 223:3072 End of report