IPv4 R&E Routing Table Report 21:10 GMT Sat 13 Dec, 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: 1020398 Prefixes after maximum aggregation (per Origin AS): 393601 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504840 Number of IPv4 prefixes with a valid ROA: 603215 Number of IPv4 prefixes with an invalid ROA: 123 Number of IPv4 prefixes with no ROA: 417060 Total ASes present in the Internet Routing Table: 77629 Prefixes per ASN: 13.14 Origin-only ASes present in the Internet Routing Table: 66403 Origin ASes announcing only one prefix: 27146 Transit ASes present in the Internet Routing Table: 11226 Transit-only ASes present in the Internet Routing Table: 574 Paths with bogon ASNs present in the IPv4 Routing Table: 17 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 68 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 982 Number of instances of unregistered ASNs: 1023 Number of 32-bit ASNs allocated by the RIRs: 48196 Number of 32-bit ASNs visible in the Routing Table: 39469 Prefixes from 32-bit ASNs in the Routing Table: 218546 Number of bogon 32-bit ASNs visible in the Routing Table: 92 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 757 Number of addresses announced to Internet: 3104813568 Equivalent to 185 /8s, 15 /16s and 178 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 333102 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275267 Total APNIC prefixes after maximum aggregation: 80706 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262296 Unique aggregates announced from the APNIC address blocks: 106277 APNIC Region origin ASes present in the Internet Routing Table: 14909 APNIC Prefixes per ASN: 17.59 APNIC Region origin ASes announcing only one prefix: 4558 APNIC Region transit ASes present in the Internet Routing Table: 2009 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: 10476 Number of APNIC addresses announced to Internet: 752912640 Equivalent to 44 /8s, 224 /16s and 137 /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: 299820 Total ARIN prefixes after maximum aggregation: 134790 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300108 Unique aggregates announced from the ARIN address blocks: 145837 ARIN Region origin ASes present in the Internet Routing Table: 19384 ARIN Prefixes per ASN: 15.48 ARIN Region origin ASes announcing only one prefix: 7098 ARIN Region transit ASes present in the Internet Routing Table: 1987 Average ARIN Region AS path length visible: 3.9 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5431 Number of ARIN addresses announced to Internet: 1342535680 Equivalent to 80 /8s, 5 /16s and 120 /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: 282678 Total RIPE prefixes after maximum aggregation: 139958 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283416 Unique aggregates announced from the RIPE address blocks: 183702 RIPE Region origin ASes present in the Internet Routing Table: 29120 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12078 RIPE Region transit ASes present in the Internet Routing Table: 4058 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: 12875 Number of RIPE addresses announced to Internet: 735137536 Equivalent to 43 /8s, 209 /16s and 79 /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: 125791 Total LACNIC prefixes after maximum aggregation: 30525 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121688 Unique aggregates announced from the LACNIC address blocks: 49754 LACNIC Region origin ASes present in the Internet Routing Table: 11320 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2675 LACNIC Region transit ASes present in the Internet Routing Table: 2573 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9328 Number of LACNIC addresses announced to Internet: 170567424 Equivalent to 10 /8s, 42 /16s and 167 /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: 35860 Total AfriNIC prefixes after maximum aggregation: 6957 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 52132 Unique aggregates announced from the AfriNIC address blocks: 18655 AfriNIC Region origin ASes present in the Internet Routing Table: 1997 AfriNIC Prefixes per ASN: 26.11 AfriNIC Region origin ASes announcing only one prefix: 737 AfriNIC Region transit ASes present in the Internet Routing Table: 389 Average AfriNIC Region AS path length visible: 5.1 Max AfriNIC Region AS path length visible: 64 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1359 Number of AfriNIC addresses announced to Internet: 103294208 Equivalent to 6 /8s, 40 /16s and 37 /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 13280 8729 118 CHINAMOBILE-CN China Mobile Communication 7545 6039 834 584 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4605 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4391 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4015 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3334 827 181 CMNET-JIANGSU-AP China Mobile communicati 45899 3316 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 2954 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2528 159 568 LCS-AS-AP LARUS Limited, HK 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 14140 38434 5415 AMAZON-02, US 22773 4781 3116 369 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4684 311 949 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3316 4863 490 GOOGLE-CLOUD-PLATFORM, US 749 3207 54744 2458 DNIC-AS-00749, US 16625 2979 1279 2178 AKAMAI-AS, US 36352 2813 229 913 AS-COLOCROSSING, US 174 2681 8770 865 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 7286 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 3970 3394 123 AKAMAI-ASN1, NL 9009 3941 368 2256 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2545 181 1845 CDNEXT, GB 34984 2420 363 574 TELLCOM-AS, TR 8452 1686 1852 14 TE-AS TE-AS, EG 203020 1617 242 783 HOSTROYALE, IN 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 12683 3293 585 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2513 509 352 Mega Cable, S.A. de C.V., MX 11830 1967 369 65 Instituto Costarricense de Electricidad y 28573 1374 2432 267 Claro NXT Telecomunicacoes Ltda, BR 11664 1362 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1266 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 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 1926 368 14 RAYA-AS, EG 36992 1684 1509 399 ETISALAT-MISR, EG 24863 1259 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1083 1084 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1036 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 559 82 3 KENET-AS, KE 15399 540 56 54 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 14140 38434 5415 AMAZON-02, US 9808 13280 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12683 3293 585 UNINET, MX 12479 7286 1711 149 UNI2-AS, ES 7545 6039 834 584 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4781 3116 369 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4684 311 949 CABLEONE, US 9498 4605 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4391 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 13280 13162 CHINAMOBILE-CN China Mobile Communications Grou 8151 12683 12098 UNINET, MX 12479 7286 7137 UNI2-AS, ES 7545 6039 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4781 4412 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4391 4367 FPT-AS-AP FPT Telecom Company, VN 9498 4605 4266 BBIL-AP BHARTI Airtel Ltd., IN 7552 4015 3987 VIETEL-AS-AP Viettel Group, VN 20940 3970 3847 AKAMAI-ASN1, NL 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 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 13342 UNALLOCATED 12.17.5.0/24 7018 ATT-INTERNET4, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 3257 GTT-BACKBONE GTT, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 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 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 /12:299 /13:582 /14:1204 /15:2098 /16:13682 /17:8228 /18:13497 /19:24802 /20:44761 /21:52108 /22:112972 /23:105532 /24:640468 /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 6875 12683 UNINET, MX 12479 6217 7286 UNI2-AS, ES 11492 3529 4684 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3050 4781 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2422 14140 AMAZON-02, US 30036 2323 2666 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3434 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) ---------------------------------------------- 1:2439 2:1569 3:968 4:10 5:4951 6:187 7:6 8:1501 9:6 11:172 12:1230 13:542 14:2607 15:415 16:298 17:387 18:912 20:587 21:4 22:188 23:8130 24:2607 25:2 27:2818 29:19 31:3383 32:31 33:1 34:81 35:287 36:4595 37:4545 38:9956 39:1194 40:434 41:4451 42:1961 43:2859 44:415 45:19540 46:5102 47:394 49:2156 50:2060 51:596 52:1508 54:289 55:1086 56:11 57:304 58:2295 59:1328 60:1171 61:3056 62:3102 63:1744 64:5987 65:2116 66:5893 67:3247 68:1492 69:4209 70:1021 71:627 72:3051 74:2937 75:1521 76:597 77:2776 78:1928 79:1790 80:2302 81:2084 82:3856 83:1474 84:2029 85:3645 86:1106 87:2180 88:1343 89:4584 90:834 91:8422 92:2837 93:3021 94:4232 95:4559 96:1460 97:312 98:950 99:778 100:68 101:1328 102:4294 103:32218 104:5491 105:795 106:915 107:2814 108:1205 109:4253 110:2302 111:3921 112:2785 113:1891 114:2100 115:2304 116:2155 117:3130 118:2977 119:2057 120:2382 121:1509 122:2949 123:2289 124:1603 125:2905 126:125 128:1618 129:962 130:1543 131:2240 132:765 133:462 134:1635 135:537 136:1501 137:1401 138:2994 139:1598 140:1777 141:1557 142:2427 143:2103 144:1364 145:634 146:2193 147:2144 148:2787 149:2942 150:1311 151:2603 152:2270 153:863 154:9283 155:2274 156:4357 157:2239 158:1477 159:2718 160:3756 161:2001 162:4001 163:2333 164:1976 165:2626 166:1303 167:2159 168:3926 169:814 170:5441 171:1115 172:4548 173:3425 174:903 175:1341 176:3768 177:4711 178:4298 179:2286 180:2826 181:4340 182:3843 183:2618 184:2058 185:21684 186:5519 187:4779 188:4452 189:4492 190:9696 191:1532 192:11448 193:9511 194:7858 195:5613 196:3303 197:3180 198:6236 199:6093 200:8217 201:6382 202:10476 203:10571 204:4655 205:3758 206:4420 207:3942 208:4305 209:5459 210:4780 211:2679 212:4901 213:4032 214:1064 215:53 216:7101 217:3389 218:1596 219:403 220:2191 221:1288 222:776 223:3184 End of report