IPv4 R&E Routing Table Report 21:10 GMT Thu 01 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: 1023635 Prefixes after maximum aggregation (per Origin AS): 394100 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506136 Number of IPv4 prefixes with a valid ROA: 609572 Number of IPv4 prefixes with an invalid ROA: 123 Number of IPv4 prefixes with no ROA: 413936 Total ASes present in the Internet Routing Table: 77672 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66465 Origin ASes announcing only one prefix: 27110 Transit ASes present in the Internet Routing Table: 11207 Transit-only ASes present in the Internet Routing Table: 568 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: 934 Number of instances of unregistered ASNs: 974 Number of 32-bit ASNs allocated by the RIRs: 48313 Number of 32-bit ASNs visible in the Routing Table: 39525 Prefixes from 32-bit ASNs in the Routing Table: 219437 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: 550 Number of addresses announced to Internet: 3104631296 Equivalent to 185 /8s, 12 /16s and 234 /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: 334320 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277244 Total APNIC prefixes after maximum aggregation: 80987 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 263847 Unique aggregates announced from the APNIC address blocks: 106515 APNIC Region origin ASes present in the Internet Routing Table: 14945 APNIC Prefixes per ASN: 17.65 APNIC Region origin ASes announcing only one prefix: 4548 APNIC Region transit ASes present in the Internet Routing Table: 2005 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: 10510 Number of APNIC addresses announced to Internet: 752956928 Equivalent to 44 /8s, 225 /16s and 54 /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: 300352 Total ARIN prefixes after maximum aggregation: 134956 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 300568 Unique aggregates announced from the ARIN address blocks: 145750 ARIN Region origin ASes present in the Internet Routing Table: 19394 ARIN Prefixes per ASN: 15.50 ARIN Region origin ASes announcing only one prefix: 7070 ARIN Region transit ASes present in the Internet Routing Table: 1993 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: 5426 Number of ARIN addresses announced to Internet: 1342533632 Equivalent to 80 /8s, 5 /16s and 112 /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: 283112 Total RIPE prefixes after maximum aggregation: 140029 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284244 Unique aggregates announced from the RIPE address blocks: 184241 RIPE Region origin ASes present in the Internet Routing Table: 29117 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12071 RIPE Region transit ASes present in the Internet Routing Table: 4054 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: 12894 Number of RIPE addresses announced to Internet: 735183872 Equivalent to 43 /8s, 210 /16s and 4 /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: 125797 Total LACNIC prefixes after maximum aggregation: 30568 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121599 Unique aggregates announced from the LACNIC address blocks: 49793 LACNIC Region origin ASes present in the Internet Routing Table: 11330 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2682 LACNIC Region transit ASes present in the Internet Routing Table: 2574 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: 170471424 Equivalent to 10 /8s, 41 /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: 36196 Total AfriNIC prefixes after maximum aggregation: 6922 AfriNIC Deaggregation factor: 5.23 Prefixes being announced from the AfriNIC address blocks: 52826 Unique aggregates announced from the AfriNIC address blocks: 19379 AfriNIC Region origin ASes present in the Internet Routing Table: 2003 AfriNIC Prefixes per ASN: 26.37 AfriNIC Region origin ASes announcing only one prefix: 739 AfriNIC Region transit ASes present in the Internet Routing Table: 384 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: 1365 Number of AfriNIC addresses announced to Internet: 103181312 Equivalent to 6 /8s, 38 /16s and 108 /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 13382 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6036 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4650 542 334 BBIL-AP BHARTI Airtel Ltd., IN 18403 4339 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4056 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3730 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3396 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3326 1868 97 VNPT-AS-VN VNPT Corp, VN 17561 3126 196 615 LCS-AS-AP LARUS Limited, HK 24560 2956 865 496 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 14037 38463 5435 AMAZON-02, US 22773 4750 3113 375 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4691 311 946 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3689 1320 82 SHAW, CA 396982 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 749 3144 54729 2395 DNIC-AS-00749, US 174 2992 8768 857 COGENT-174, US 16625 2970 1278 2177 AKAMAI-AS, US 36352 2697 222 896 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 7276 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3948 368 2271 M247, RO 20940 3940 3393 112 AKAMAI-ASN1, NL 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2563 182 1862 CDNEXT, GB 34984 2421 371 574 TELLCOM-AS, TR 8452 1701 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 12648 3293 592 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2480 506 350 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 11664 1372 278 32 Techtel LMDS Comunicaciones Interactivas 28573 1370 2430 270 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1260 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1013 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 1847 1534 341 ETISALAT-MISR, EG 24863 1264 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1099 1084 13 MOBINIL, EG 36935 1097 523 46 Vodafone-, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 554 82 3 KENET-AS, KE 328608 545 52 159 Africa-on-Cloud-AS, ZA 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 14037 38463 5435 AMAZON-02, US 9808 13382 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12648 3293 592 UNINET, MX 12479 7276 1711 149 UNI2-AS, ES 7545 6036 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4750 3113 375 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4691 311 946 CABLEONE, US 9498 4650 542 334 BBIL-AP BHARTI Airtel Ltd., IN 18403 4339 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 13382 13262 CHINAMOBILE-CN China Mobile Communications Grou 8151 12648 12056 UNINET, MX 12479 7276 7127 UNI2-AS, ES 7545 6036 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4750 4375 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4650 4316 BBIL-AP BHARTI Airtel Ltd., IN 18403 4339 4315 FPT-AS-AP FPT Telecom Company, VN 7552 4056 4027 VIETEL-AS-AP Viettel Group, VN 20940 3940 3828 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 210097 UNALLOCATED 5.231.245.0/24 209874 TECHTIDE, PT 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 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 /10:41 /11:93 /12:299 /13:581 /14:1203 /15:2097 /16:13683 /17:8239 /18:13520 /19:24845 /20:44819 /21:52100 /22:113139 /23:105969 /24:642976 /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 6852 12648 UNINET, MX 12479 6207 7276 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3536 4691 CABLEONE, US 6327 3478 3689 SHAW, CA 22773 3055 4750 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2465 14037 AMAZON-02, US 30036 2307 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) ---------------------------------------------- 1:2460 2:1548 3:980 4:10 5:4994 6:187 7:6 8:1507 9:14 11:172 12:1234 13:611 14:2628 15:418 16:275 17:383 18:914 20:591 21:4 22:188 23:8153 24:2560 25:2 27:2824 29:19 31:3388 32:31 33:1 34:81 35:286 36:4632 37:4520 38:9891 39:1223 40:434 41:4482 42:1920 43:2909 44:415 45:19588 46:5019 47:396 49:2154 50:2050 51:598 52:1251 54:229 55:1120 56:11 57:309 58:2291 59:1341 60:1171 61:3059 62:3100 63:1770 64:6107 65:2128 66:6009 67:3272 68:1502 69:4210 70:1020 71:625 72:3075 74:2961 75:1517 76:599 77:2754 78:1928 79:1782 80:2302 81:2083 82:3946 83:1475 84:2031 85:3666 86:1098 87:2208 88:1358 89:4627 90:833 91:8437 92:2831 93:3019 94:4266 95:4552 96:1451 97:312 98:957 99:789 100:68 101:1306 102:4334 103:32314 104:5467 105:789 106:920 107:2807 108:1215 109:4242 110:2301 111:4003 112:2834 113:1923 114:2097 115:2311 116:2153 117:3241 118:2979 119:2082 120:2427 121:1519 122:2955 123:2299 124:1606 125:2939 126:125 128:1614 129:962 130:1563 131:2281 132:766 133:462 134:1630 135:539 136:1496 137:1412 138:2986 139:1606 140:1775 141:1558 142:2433 143:2110 144:1474 145:627 146:2195 147:2147 148:2773 149:2921 150:1316 151:2588 152:2259 153:912 154:9504 155:2305 156:4548 157:2255 158:1482 159:2733 160:3744 161:1995 162:4004 163:2335 164:1961 165:2646 166:1304 167:2199 168:3912 169:815 170:5456 171:1117 172:4543 173:3421 174:901 175:1341 176:3784 177:4752 178:4309 179:2293 180:2828 181:4349 182:3864 183:2678 184:2048 185:21759 186:5491 187:4777 188:4606 189:4476 190:9665 191:1565 192:11448 193:9519 194:7866 195:5651 196:3266 197:3185 198:6236 199:6110 200:8171 201:6381 202:10586 203:10622 204:4701 205:3767 206:4423 207:3975 208:4376 209:5500 210:4780 211:2680 212:4940 213:4043 214:1063 215:54 216:7128 217:3469 218:1617 219:409 220:2186 221:1301 222:776 223:3239 End of report