IPv4 R&E Routing Table Report 21:10 GMT Mon 27 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: 1012519 Prefixes after maximum aggregation (per Origin AS): 392678 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498548 Number of IPv4 prefixes with a valid ROA: 582456 Number of IPv4 prefixes with an invalid ROA: 132 Number of IPv4 prefixes with no ROA: 429919 Total ASes present in the Internet Routing Table: 77459 Prefixes per ASN: 13.07 Origin-only ASes present in the Internet Routing Table: 66317 Origin ASes announcing only one prefix: 27108 Transit ASes present in the Internet Routing Table: 11142 Transit-only ASes present in the Internet Routing Table: 550 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 ( 37447) 39 Prefixes from unregistered ASNs in the Routing Table: 959 Number of instances of unregistered ASNs: 988 Number of 32-bit ASNs allocated by the RIRs: 47816 Number of 32-bit ASNs visible in the Routing Table: 39200 Prefixes from 32-bit ASNs in the Routing Table: 213760 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: 420 Number of addresses announced to Internet: 3111811584 Equivalent to 185 /8s, 122 /16s and 122 /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: 330547 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269983 Total APNIC prefixes after maximum aggregation: 80348 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 259781 Unique aggregates announced from the APNIC address blocks: 105709 APNIC Region origin ASes present in the Internet Routing Table: 14840 APNIC Prefixes per ASN: 17.51 APNIC Region origin ASes announcing only one prefix: 4525 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: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10398 Number of APNIC addresses announced to Internet: 751597056 Equivalent to 44 /8s, 204 /16s and 118 /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: 299884 Total ARIN prefixes after maximum aggregation: 135102 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300693 Unique aggregates announced from the ARIN address blocks: 144757 ARIN Region origin ASes present in the Internet Routing Table: 19365 ARIN Prefixes per ASN: 15.53 ARIN Region origin ASes announcing only one prefix: 7104 ARIN Region transit ASes present in the Internet Routing Table: 1989 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: 5392 Number of ARIN addresses announced to Internet: 1352350464 Equivalent to 80 /8s, 155 /16s and 59 /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: 281047 Total RIPE prefixes after maximum aggregation: 139247 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280825 Unique aggregates announced from the RIPE address blocks: 181438 RIPE Region origin ASes present in the Internet Routing Table: 29091 RIPE Prefixes per ASN: 9.65 RIPE Region origin ASes announcing only one prefix: 12080 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: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12785 Number of RIPE addresses announced to Internet: 733108992 Equivalent to 43 /8s, 178 /16s and 91 /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: 125209 Total LACNIC prefixes after maximum aggregation: 30414 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121287 Unique aggregates announced from the LACNIC address blocks: 49512 LACNIC Region origin ASes present in the Internet Routing Table: 11311 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2678 LACNIC Region transit ASes present in the Internet Routing Table: 2565 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: 9285 Number of LACNIC addresses announced to Internet: 170740224 Equivalent to 10 /8s, 45 /16s and 74 /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: 35437 Total AfriNIC prefixes after maximum aggregation: 6909 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 49512 Unique aggregates announced from the AfriNIC address blocks: 16756 AfriNIC Region origin ASes present in the Internet Routing Table: 1979 AfriNIC Prefixes per ASN: 25.02 AfriNIC Region origin ASes announcing only one prefix: 721 AfriNIC Region transit ASes present in the Internet Routing Table: 380 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 42 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1340 Number of AfriNIC addresses announced to Internet: 103789824 Equivalent to 6 /8s, 47 /16s and 181 /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 13307 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6128 834 592 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4486 537 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4416 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 3233 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 14405 41103 5382 AMAZON-02, US 11492 4772 316 803 CABLEONE, US 22773 4293 3085 373 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3860 286 85 VIASAT-SP-BACKBONE, US 6327 3685 1320 82 SHAW, CA 396982 3278 4826 469 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 4155 3131 243 1748 USDA-1, US 16625 2993 1277 2187 AKAMAI-AS, US 174 2910 8766 832 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 7335 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 4018 3395 124 AKAMAI-ASN1, NL 9009 3997 377 2279 M247, RO 12389 3140 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2509 177 1817 CDNEXT, GB 34984 2416 363 577 TELLCOM-AS, TR 203020 1722 206 1003 HOSTROYALE, IN 8452 1669 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 12465 3293 573 UNINET, MX 10620 3455 463 1098 Telmex Colombia S.A., CO 13999 2510 510 349 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, 6147 1279 371 23 Telefonica del Peru S.A.A., PE 11664 1265 278 32 Techtel LMDS Comunicaciones Interactivas 22884 1062 70 366 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1026 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 1967 630 32 RAYA-AS, EG 36992 1679 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 572 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 14405 41103 5382 AMAZON-02, US 9808 13307 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12465 3293 573 UNINET, MX 12479 7335 1711 149 UNI2-AS, ES 7545 6128 834 592 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4772 316 803 CABLEONE, US 9498 4486 537 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4416 347 24 FPT-AS-AP FPT Telecom Company, VN 22773 4293 3085 373 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 13307 13190 CHINAMOBILE-CN China Mobile Communications Grou 8151 12465 11892 UNINET, MX 12479 7335 7186 UNI2-AS, ES 7545 6128 5536 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4416 4392 FPT-AS-AP FPT Telecom Company, VN 9498 4486 4175 BBIL-AP BHARTI Airtel Ltd., IN 11492 4772 3969 CABLEONE, US 7552 3985 3957 VIETEL-AS-AP Viettel Group, VN 22773 4293 3920 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 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 /16:13784 /17:8244 /18:13505 /19:24721 /20:44387 /21:52079 /22:112955 /23:104719 /24:633746 /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 6674 12465 UNINET, MX 12479 6294 7335 UNI2-AS, ES 11492 3586 4772 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3474 3685 SHAW, CA 7155 2819 3860 VIASAT-SP-BACKBONE, US 22773 2644 4293 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2425 14405 AMAZON-02, US 30036 2295 2637 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2210 3455 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) ---------------------------------------------- 1:2432 2:1557 3:963 4:10 5:4868 6:171 7:6 8:1506 9:6 11:172 12:1238 13:540 14:2654 15:402 16:303 17:387 18:909 20:580 21:4 22:189 23:8090 24:2611 25:2 27:2814 29:19 31:3348 32:31 33:1 34:81 35:275 36:4493 37:4550 38:9512 39:1097 40:466 41:4308 42:1940 43:2773 44:401 45:19157 46:5198 47:370 49:2124 50:2053 51:596 52:1631 54:357 55:1098 56:11 57:288 58:2293 59:1303 60:1189 61:2928 62:3091 63:1767 64:5853 65:2131 66:5621 67:3150 68:1473 69:4136 70:1035 71:637 72:2980 74:2862 75:1511 76:601 77:2765 78:1920 79:1753 80:2241 81:2127 82:3458 83:1470 84:1992 85:3585 86:1100 87:2141 88:1365 89:4519 90:815 91:8398 92:2807 93:2990 94:4155 95:4507 96:1487 97:312 98:948 99:754 100:71 101:1114 102:4233 103:32257 104:5448 105:779 106:896 107:2791 108:1205 109:4218 110:2248 111:3818 112:2721 113:1861 114:2084 115:2287 116:2092 117:3044 118:3062 119:1997 120:2321 121:1502 122:2811 123:2268 124:1658 125:2883 126:124 128:1598 129:966 130:1443 131:2204 132:792 133:461 134:1623 135:365 136:1490 137:1333 138:2830 139:1591 140:1641 141:1559 142:2210 143:2083 144:1306 145:627 146:2189 147:2128 148:2764 149:2888 150:1283 151:2633 152:2219 153:649 154:8148 155:2201 156:3203 157:2001 158:1430 159:2605 160:3645 161:2006 162:3965 163:2308 164:1953 165:2557 166:1511 167:2104 168:3785 169:780 170:5400 171:1058 172:4494 173:3424 174:903 175:1342 176:3758 177:4727 178:4306 179:2285 180:2744 181:4294 182:3761 183:2560 184:2071 185:21680 186:5381 187:4709 188:4386 189:4438 190:9713 191:1564 192:11418 193:9497 194:7829 195:5584 196:3266 197:3235 198:6261 199:8843 200:8221 201:6381 202:10481 203:10635 204:4639 205:3693 206:4412 207:3872 208:4266 209:5428 210:4733 211:2675 212:4888 213:3919 214:1042 215:53 216:7158 217:3400 218:1578 219:398 220:2197 221:1259 222:756 223:3099 End of report