IPv4 R&E Routing Table Report 21:10 GMT Mon 12 Jan, 2026 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: 1025564 Prefixes after maximum aggregation (per Origin AS): 394827 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506596 Number of IPv4 prefixes with a valid ROA: 610743 Number of IPv4 prefixes with an invalid ROA: 117 Number of IPv4 prefixes with no ROA: 414704 Total ASes present in the Internet Routing Table: 77729 Prefixes per ASN: 13.19 Origin-only ASes present in the Internet Routing Table: 66556 Origin ASes announcing only one prefix: 27130 Transit ASes present in the Internet Routing Table: 11173 Transit-only ASes present in the Internet Routing Table: 567 Paths with bogon ASNs present in the IPv4 Routing Table: 16 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: 1031 Number of instances of unregistered ASNs: 1071 Number of 32-bit ASNs allocated by the RIRs: 48351 Number of 32-bit ASNs visible in the Routing Table: 39604 Prefixes from 32-bit ASNs in the Routing Table: 219833 Number of bogon 32-bit ASNs visible in the Routing Table: 90 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 546 Number of addresses announced to Internet: 3105163520 Equivalent to 185 /8s, 21 /16s and 9 /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: 334256 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 278660 Total APNIC prefixes after maximum aggregation: 81554 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 265287 Unique aggregates announced from the APNIC address blocks: 106853 APNIC Region origin ASes present in the Internet Routing Table: 14974 APNIC Prefixes per ASN: 17.72 APNIC Region origin ASes announcing only one prefix: 4559 APNIC Region transit ASes present in the Internet Routing Table: 2007 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 34 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10536 Number of APNIC addresses announced to Internet: 753211648 Equivalent to 44 /8s, 229 /16s and 25 /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: 300821 Total ARIN prefixes after maximum aggregation: 135073 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 300889 Unique aggregates announced from the ARIN address blocks: 145821 ARIN Region origin ASes present in the Internet Routing Table: 19389 ARIN Prefixes per ASN: 15.52 ARIN Region origin ASes announcing only one prefix: 7068 ARIN Region transit ASes present in the Internet Routing Table: 1981 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: 5447 Number of ARIN addresses announced to Internet: 1344052224 Equivalent to 80 /8s, 28 /16s and 156 /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: 282898 Total RIPE prefixes after maximum aggregation: 139984 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284194 Unique aggregates announced from the RIPE address blocks: 184211 RIPE Region origin ASes present in the Internet Routing Table: 29114 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12073 RIPE Region transit ASes present in the Internet Routing Table: 4040 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 45 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12908 Number of RIPE addresses announced to Internet: 733813760 Equivalent to 43 /8s, 189 /16s and 28 /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: 125786 Total LACNIC prefixes after maximum aggregation: 30604 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121587 Unique aggregates announced from the LACNIC address blocks: 49812 LACNIC Region origin ASes present in the Internet Routing Table: 11341 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2689 LACNIC Region transit ASes present in the Internet Routing Table: 2560 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: 9339 Number of LACNIC addresses announced to Internet: 170536960 Equivalent to 10 /8s, 42 /16s and 48 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + 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: 36368 Total AfriNIC prefixes after maximum aggregation: 6922 AfriNIC Deaggregation factor: 5.25 Prefixes being announced from the AfriNIC address blocks: 53060 Unique aggregates announced from the AfriNIC address blocks: 19425 AfriNIC Region origin ASes present in the Internet Routing Table: 2011 AfriNIC Prefixes per ASN: 26.38 AfriNIC Region origin ASes announcing only one prefix: 741 AfriNIC Region transit ASes present in the Internet Routing Table: 388 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 43 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1374 Number of AfriNIC addresses announced to Internet: 103244544 Equivalent to 6 /8s, 39 /16s and 99 /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 13405 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4673 543 337 BBIL-AP BHARTI Airtel Ltd., IN 18403 4349 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4049 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3731 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3406 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3326 1868 97 VNPT-AS-VN VNPT Corp, VN 17561 3158 198 618 LCS-AS-AP LARUS Limited, HK 24560 2955 865 497 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 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 14154 38628 5425 AMAZON-02, US 22773 4780 3115 366 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4634 308 1032 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3695 1321 70 SHAW, CA 396982 3325 4868 496 GOOGLE-CLOUD-PLATFORM, US 749 3144 54729 2395 DNIC-AS-00749, US 174 3100 8767 845 COGENT-174, US 16625 2956 1277 2170 AKAMAI-AS, US 36352 2699 222 898 AS-COLOCROSSING, 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 7261 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3943 3393 112 AKAMAI-ASN1, NL 9009 3923 366 2244 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2572 183 1869 CDNEXT, GB 34984 2425 372 577 TELLCOM-AS, TR 8452 1710 1852 14 TE-AS TE-AS, EG 203020 1622 243 799 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 12714 3309 593 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2479 507 352 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 11664 1365 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1256 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1007 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 1982 638 33 RAYA-AS, EG 36992 1849 1534 341 ETISALAT-MISR, EG 24863 1264 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1125 524 47 Vodafone-, EG 37069 1099 1084 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 328608 569 53 163 Africa-on-Cloud-AS, ZA 36914 567 82 3 KENET-AS, 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 14154 38628 5425 AMAZON-02, US 9808 13405 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12714 3309 593 UNINET, MX 12479 7261 1711 149 UNI2-AS, ES 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4780 3115 366 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4673 543 337 BBIL-AP BHARTI Airtel Ltd., IN 11492 4634 308 1032 CABLEONE, US 18403 4349 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 13405 13285 CHINAMOBILE-CN China Mobile Communications Grou 8151 12714 12121 UNINET, MX 12479 7261 7112 UNI2-AS, ES 7545 6028 5453 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4780 4414 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4673 4336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4349 4325 FPT-AS-AP FPT Telecom Company, VN 7552 4049 4020 VIETEL-AS-AP Viettel Group, VN 20940 3943 3831 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 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 12.17.5.0/24 174 COGENT-174, 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 395476 UNALLOCATED 12.36.194.0/24 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 23.140.216.0/24 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 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 /10:40 /11:93 /12:302 /13:582 /14:1203 /15:2097 /16:13685 /17:8249 /18:13516 /19:24857 /20:44881 /21:52139 /22:113349 /23:106189 /24:644351 /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 6887 12714 UNINET, MX 12479 6192 7261 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4634 CABLEONE, US 6327 3478 3695 SHAW, CA 22773 3051 4780 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2497 14154 AMAZON-02, US 30036 2309 2650 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) ---------------------------------------------- 1:2477 2:1526 3:990 4:9 5:4998 6:187 7:6 8:1507 9:15 11:172 12:1230 13:630 14:2637 15:418 16:275 17:389 18:916 20:595 21:4 22:188 23:8180 24:2623 25:2 27:2825 29:19 31:3398 32:31 34:81 35:288 36:4619 37:4515 38:9830 39:1237 40:437 41:4503 42:1931 43:2932 44:411 45:19621 46:4994 47:395 49:2158 50:2054 51:598 52:1247 54:232 55:1108 56:11 57:313 58:2293 59:1337 60:1171 61:3095 62:3101 63:1772 64:6121 65:2141 66:6006 67:3266 68:1499 69:4211 70:1023 71:625 72:3074 74:2975 75:1516 76:598 77:2760 78:1921 79:1789 80:2295 81:2085 82:4009 83:1478 84:2035 85:3677 86:1099 87:2217 88:1355 89:4634 90:826 91:8428 92:2848 93:3018 94:4265 95:4527 96:1441 97:312 98:953 99:789 100:69 101:1553 102:4346 103:32336 104:5466 105:793 106:907 107:2816 108:1215 109:4215 110:2302 111:4018 112:3014 113:1931 114:2164 115:2307 116:2149 117:3275 118:2992 119:2079 120:2436 121:1521 122:2957 123:2304 124:1606 125:2946 126:125 128:1607 129:977 130:1561 131:2272 132:769 133:461 134:1633 135:540 136:1609 137:1427 138:2988 139:1611 140:1765 141:1564 142:2446 143:2115 144:1434 145:631 146:2199 147:2179 148:2790 149:2905 150:1314 151:2588 152:2255 153:916 154:9605 155:2313 156:4618 157:2255 158:1489 159:2742 160:3742 161:2003 162:3996 163:2322 164:1966 165:2655 166:1296 167:2201 168:3922 169:814 170:5442 171:1116 172:4579 173:3425 174:893 175:1347 176:3774 177:4701 178:4237 179:2297 180:2968 181:4346 182:3884 183:2703 184:2034 185:21735 186:5501 187:4793 188:4606 189:4477 190:9661 191:1517 192:11465 193:9513 194:7832 195:5671 196:3267 197:3181 198:6243 199:6107 200:8153 201:6391 202:10615 203:10631 204:4699 205:3754 206:4404 207:3970 208:4379 209:5508 210:4789 211:2685 212:4938 213:4049 214:1069 215:54 216:7144 217:3463 218:1620 219:412 220:2187 221:1306 222:876 223:3256 End of report