IPv4 R&E Routing Table Report 21:10 GMT Wed 31 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: 1023956 Prefixes after maximum aggregation (per Origin AS): 394190 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506148 Number of IPv4 prefixes with a valid ROA: 609897 Number of IPv4 prefixes with an invalid ROA: 123 Number of IPv4 prefixes with no ROA: 413933 Total ASes present in the Internet Routing Table: 77695 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66479 Origin ASes announcing only one prefix: 27115 Transit ASes present in the Internet Routing Table: 11216 Transit-only ASes present in the Internet Routing Table: 572 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: 937 Number of instances of unregistered ASNs: 977 Number of 32-bit ASNs allocated by the RIRs: 48315 Number of 32-bit ASNs visible in the Routing Table: 39544 Prefixes from 32-bit ASNs in the Routing Table: 219524 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: 580 Number of addresses announced to Internet: 3104557056 Equivalent to 185 /8s, 11 /16s and 200 /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: 334628 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277297 Total APNIC prefixes after maximum aggregation: 80994 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 263901 Unique aggregates announced from the APNIC address blocks: 106530 APNIC Region origin ASes present in the Internet Routing Table: 14951 APNIC Prefixes per ASN: 17.65 APNIC Region origin ASes announcing only one prefix: 4544 APNIC Region transit ASes present in the Internet Routing Table: 2006 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: 10516 Number of APNIC addresses announced to Internet: 753022720 Equivalent to 44 /8s, 226 /16s and 55 /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: 300516 Total ARIN prefixes after maximum aggregation: 134965 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 300754 Unique aggregates announced from the ARIN address blocks: 145647 ARIN Region origin ASes present in the Internet Routing Table: 19394 ARIN Prefixes per ASN: 15.51 ARIN Region origin ASes announcing only one prefix: 7071 ARIN Region transit ASes present in the Internet Routing Table: 1992 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: 5427 Number of ARIN addresses announced to Internet: 1342357760 Equivalent to 80 /8s, 2 /16s and 193 /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: 283255 Total RIPE prefixes after maximum aggregation: 140107 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284343 Unique aggregates announced from the RIPE address blocks: 184319 RIPE Region origin ASes present in the Internet Routing Table: 29127 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12076 RIPE Region transit ASes present in the Internet Routing Table: 4055 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: 12902 Number of RIPE addresses announced to Internet: 735221248 Equivalent to 43 /8s, 210 /16s and 150 /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: 125750 Total LACNIC prefixes after maximum aggregation: 30566 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121543 Unique aggregates announced from the LACNIC address blocks: 49780 LACNIC Region origin ASes present in the Internet Routing Table: 11334 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2686 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: 9335 Number of LACNIC addresses announced to Internet: 170459904 Equivalent to 10 /8s, 41 /16s and 3 /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: 36201 Total AfriNIC prefixes after maximum aggregation: 6920 AfriNIC Deaggregation factor: 5.23 Prefixes being announced from the AfriNIC address blocks: 52834 Unique aggregates announced from the AfriNIC address blocks: 19383 AfriNIC Region origin ASes present in the Internet Routing Table: 2002 AfriNIC Prefixes per ASN: 26.39 AfriNIC Region origin ASes announcing only one prefix: 738 AfriNIC Region transit ASes present in the Internet Routing Table: 386 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: 1364 Number of AfriNIC addresses announced to Internet: 103182080 Equivalent to 6 /8s, 38 /16s and 111 /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 6035 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4651 542 334 BBIL-AP BHARTI Airtel Ltd., IN 18403 4342 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 3125 196 614 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 3143 54729 2394 DNIC-AS-00749, US 174 2995 8768 860 COGENT-174, US 16625 2970 1278 2177 AKAMAI-AS, US 36352 2696 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 7278 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3949 368 2271 M247, RO 20940 3940 3393 112 AKAMAI-ASN1, NL 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2564 182 1863 CDNEXT, GB 34984 2421 371 574 TELLCOM-AS, TR 8452 1702 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 3433 457 1107 Telmex Colombia S.A., CO 13999 2488 506 351 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 11664 1371 278 31 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 1265 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 560 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 7278 1711 149 UNI2-AS, ES 7545 6035 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 4651 542 334 BBIL-AP BHARTI Airtel Ltd., IN 18403 4342 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 7278 7129 UNI2-AS, ES 7545 6035 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4750 4375 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4342 4318 FPT-AS-AP FPT Telecom Company, VN 9498 4651 4317 BBIL-AP BHARTI Airtel Ltd., IN 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 /15:2096 /16:13685 /17:8238 /18:13525 /19:24850 /20:44838 /21:52105 /22:113191 /23:105939 /24:643241 /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 6209 7278 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 2464 14037 AMAZON-02, US 30036 2307 2650 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 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) ---------------------------------------------- 1:2455 2:1550 3:980 4:10 5:4997 6:187 7:6 8:1507 9:14 11:172 12:1234 13:611 14:2628 15:418 16:274 17:383 18:914 20:591 21:4 22:188 23:8151 24:2610 25:2 27:2824 29:19 31:3391 32:31 33:1 34:81 35:287 36:4632 37:4520 38:9886 39:1223 40:434 41:4485 42:1922 43:2910 44:414 45:19578 46:5035 47:396 49:2154 50:2053 51:598 52:1250 54:229 55:1122 56:11 57:310 58:2291 59:1341 60:1171 61:3060 62:3100 63:1770 64:6120 65:2129 66:6011 67:3273 68:1503 69:4232 70:1020 71:625 72:3078 74:2968 75:1521 76:599 77:2755 78:1929 79:1785 80:2302 81:2083 82:3950 83:1474 84:2031 85:3664 86:1099 87:2208 88:1357 89:4628 90:833 91:8435 92:2835 93:3026 94:4268 95:4562 96:1469 97:312 98:957 99:789 100:68 101:1306 102:4334 103:32330 104:5457 105:789 106:920 107:2809 108:1215 109:4267 110:2301 111:4004 112:2834 113:1921 114:2096 115:2311 116:2155 117:3241 118:2983 119:2082 120:2427 121:1519 122:2955 123:2299 124:1606 125:2940 126:125 128:1614 129:962 130:1564 131:2281 132:765 133:462 134:1640 135:539 136:1498 137:1414 138:2988 139:1606 140:1775 141:1562 142:2433 143:2117 144:1474 145:627 146:2195 147:2146 148:2774 149:2930 150:1317 151:2590 152:2259 153:912 154:9505 155:2309 156:4550 157:2258 158:1482 159:2734 160:3747 161:1997 162:4003 163:2335 164:1961 165:2644 166:1304 167:2199 168:3909 169:814 170:5452 171:1118 172:4537 173:3422 174:901 175:1341 176:3784 177:4740 178:4321 179:2251 180:2830 181:4347 182:3866 183:2680 184:2055 185:21753 186:5519 187:4775 188:4608 189:4476 190:9663 191:1568 192:11447 193:9522 194:7867 195:5650 196:3267 197:3192 198:6236 199:6112 200:8173 201:6382 202:10577 203:10622 204:4701 205:3778 206:4424 207:3975 208:4380 209:5503 210:4778 211:2680 212:4939 213:4042 214:1064 215:54 216:7142 217:3469 218:1613 219:409 220:2186 221:1301 222:776 223:3239 End of report