IPv4 R&E Routing Table Report 21:10 GMT Wed 17 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: 1021121 Prefixes after maximum aggregation (per Origin AS): 394033 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505481 Number of IPv4 prefixes with a valid ROA: 605820 Number of IPv4 prefixes with an invalid ROA: 121 Number of IPv4 prefixes with no ROA: 415176 Total ASes present in the Internet Routing Table: 77668 Prefixes per ASN: 13.15 Origin-only ASes present in the Internet Routing Table: 66452 Origin ASes announcing only one prefix: 27137 Transit ASes present in the Internet Routing Table: 11216 Transit-only ASes present in the Internet Routing Table: 570 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: 968 Number of instances of unregistered ASNs: 1008 Number of 32-bit ASNs allocated by the RIRs: 48221 Number of 32-bit ASNs visible in the Routing Table: 39506 Prefixes from 32-bit ASNs in the Routing Table: 218925 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: 733 Number of addresses announced to Internet: 3104786944 Equivalent to 185 /8s, 15 /16s and 74 /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: 333432 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275827 Total APNIC prefixes after maximum aggregation: 80844 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262768 Unique aggregates announced from the APNIC address blocks: 106360 APNIC Region origin ASes present in the Internet Routing Table: 14931 APNIC Prefixes per ASN: 17.60 APNIC Region origin ASes announcing only one prefix: 4573 APNIC Region transit ASes present in the Internet Routing Table: 2003 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: 10499 Number of APNIC addresses announced to Internet: 752876544 Equivalent to 44 /8s, 223 /16s and 252 /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: 299863 Total ARIN prefixes after maximum aggregation: 134937 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300237 Unique aggregates announced from the ARIN address blocks: 145935 ARIN Region origin ASes present in the Internet Routing Table: 19395 ARIN Prefixes per ASN: 15.48 ARIN Region origin ASes announcing only one prefix: 7082 ARIN Region transit ASes present in the Internet Routing Table: 1990 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: 5433 Number of ARIN addresses announced to Internet: 1342740224 Equivalent to 80 /8s, 8 /16s and 151 /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: 282901 Total RIPE prefixes after maximum aggregation: 140074 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283651 Unique aggregates announced from the RIPE address blocks: 183947 RIPE Region origin ASes present in the Internet Routing Table: 29126 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12082 RIPE Region transit ASes present in the Internet Routing Table: 4057 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: 12883 Number of RIPE addresses announced to Internet: 735124224 Equivalent to 43 /8s, 209 /16s and 27 /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: 125921 Total LACNIC prefixes after maximum aggregation: 30561 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121707 Unique aggregates announced from the LACNIC address blocks: 49786 LACNIC Region origin ASes present in the Internet Routing Table: 11325 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2668 LACNIC Region transit ASes present in the Internet Routing Table: 2567 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: 9330 Number of LACNIC addresses announced to Internet: 170461696 Equivalent to 10 /8s, 41 /16s and 10 /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: 35641 Total AfriNIC prefixes after maximum aggregation: 6962 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 52024 Unique aggregates announced from the AfriNIC address blocks: 18861 AfriNIC Region origin ASes present in the Internet Routing Table: 1996 AfriNIC Prefixes per ASN: 26.06 AfriNIC Region origin ASes announcing only one prefix: 732 AfriNIC Region transit ASes present in the Internet Routing Table: 389 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 64 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1361 Number of AfriNIC addresses announced to Internet: 103225344 Equivalent to 6 /8s, 39 /16s and 24 /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 13314 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6039 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4614 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4531 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4012 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3358 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3317 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 2954 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2732 172 600 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 14012 38457 5445 AMAZON-02, US 22773 4779 3116 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 945 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3317 4863 491 GOOGLE-CLOUD-PLATFORM, US 749 3142 54729 2393 DNIC-AS-00749, US 16625 2979 1279 2178 AKAMAI-AS, US 36352 2812 229 912 AS-COLOCROSSING, US 174 2694 8767 856 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 7288 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 3955 3394 123 AKAMAI-ASN1, NL 9009 3937 368 2252 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2558 182 1857 CDNEXT, GB 34984 2420 363 574 TELLCOM-AS, TR 8452 1689 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 12677 3283 587 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2498 508 354 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1369 2429 273 Claro NXT Telecomunicacoes Ltda, BR 11664 1367 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1024 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 1739 368 14 RAYA-AS, EG 36992 1692 1509 402 ETISALAT-MISR, EG 24863 1260 389 16 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 1025 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 567 82 3 KENET-AS, KE 15399 541 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 14012 38457 5445 AMAZON-02, US 9808 13314 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12677 3283 587 UNINET, MX 12479 7288 1711 149 UNI2-AS, ES 7545 6039 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4779 3116 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 945 CABLEONE, US 9498 4614 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4531 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 13314 13194 CHINAMOBILE-CN China Mobile Communications Grou 8151 12677 12090 UNINET, MX 12479 7288 7139 UNI2-AS, ES 7545 6039 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4531 4507 FPT-AS-AP FPT Telecom Company, VN 22773 4779 4411 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4614 4275 BBIL-AP BHARTI Airtel Ltd., IN 7552 4012 3984 VIETEL-AS-AP Viettel Group, VN 20940 3955 3832 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 23.140.216.0/24 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 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 /15:2099 /16:13678 /17:8225 /18:13496 /19:24789 /20:44732 /21:52114 /22:112866 /23:105703 /24:641169 /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 6876 12677 UNINET, MX 12479 6219 7288 UNI2-AS, ES 11492 3533 4688 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3049 4779 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2449 14012 AMAZON-02, US 30036 2319 2662 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) ---------------------------------------------- 1:2444 2:1559 3:969 4:10 5:4962 6:187 7:6 8:1501 9:6 11:172 12:1230 13:594 14:2609 15:415 16:290 17:387 18:911 20:586 21:4 22:188 23:8141 24:2610 25:2 27:2817 29:19 31:3385 32:31 33:1 34:81 35:287 36:4608 37:4528 38:9974 39:1200 40:442 41:4426 42:2068 43:2844 44:413 45:19548 46:5108 47:393 49:2156 50:2054 51:596 52:1328 54:228 55:1134 56:11 57:305 58:2293 59:1333 60:1170 61:3057 62:3104 63:1743 64:5984 65:2122 66:5903 67:3240 68:1500 69:4204 70:1022 71:626 72:3060 74:2933 75:1520 76:598 77:2755 78:1925 79:1803 80:2299 81:2083 82:3888 83:1476 84:2019 85:3638 86:1101 87:2202 88:1356 89:4616 90:835 91:8436 92:2840 93:3019 94:4236 95:4563 96:1453 97:311 98:950 99:781 100:68 101:1320 102:4308 103:32203 104:5498 105:776 106:918 107:2811 108:1210 109:4252 110:2303 111:3946 112:2802 113:1902 114:2091 115:2317 116:2157 117:3143 118:3003 119:2061 120:2411 121:1511 122:2950 123:2293 124:1599 125:2911 126:125 128:1613 129:957 130:1547 131:2273 132:766 133:462 134:1638 135:538 136:1506 137:1420 138:2996 139:1607 140:1771 141:1559 142:2432 143:2119 144:1356 145:625 146:2191 147:2143 148:2797 149:2939 150:1316 151:2595 152:2253 153:868 154:9326 155:2272 156:4453 157:2243 158:1476 159:2728 160:3760 161:1993 162:3988 163:2342 164:1965 165:2629 166:1301 167:2190 168:3939 169:821 170:5441 171:1114 172:4540 173:3425 174:901 175:1343 176:3764 177:4730 178:4293 179:2290 180:2827 181:4340 182:3850 183:2660 184:2041 185:21720 186:5500 187:4771 188:4456 189:4487 190:9679 191:1539 192:11448 193:9511 194:7859 195:5626 196:3295 197:3188 198:6222 199:6113 200:8207 201:6400 202:10480 203:10585 204:4656 205:3756 206:4423 207:3949 208:4353 209:5514 210:4778 211:2680 212:4903 213:4028 214:1060 215:54 216:7124 217:3399 218:1604 219:405 220:2190 221:1289 222:774 223:3218 End of report