IPv4 R&E Routing Table Report 21:10 GMT Fri 26 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: 1023498 Prefixes after maximum aggregation (per Origin AS): 394068 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 505778 Number of IPv4 prefixes with a valid ROA: 609008 Number of IPv4 prefixes with an invalid ROA: 122 Number of IPv4 prefixes with no ROA: 414368 Total ASes present in the Internet Routing Table: 77668 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66463 Origin ASes announcing only one prefix: 27115 Transit ASes present in the Internet Routing Table: 11205 Transit-only ASes present in the Internet Routing Table: 569 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: 948 Number of instances of unregistered ASNs: 989 Number of 32-bit ASNs allocated by the RIRs: 48312 Number of 32-bit ASNs visible in the Routing Table: 39525 Prefixes from 32-bit ASNs in the Routing Table: 219506 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: 629 Number of addresses announced to Internet: 3105555712 Equivalent to 185 /8s, 27 /16s and 5 /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: 334139 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 276922 Total APNIC prefixes after maximum aggregation: 80893 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 263368 Unique aggregates announced from the APNIC address blocks: 106388 APNIC Region origin ASes present in the Internet Routing Table: 14944 APNIC Prefixes per ASN: 17.62 APNIC Region origin ASes announcing only one prefix: 4562 APNIC Region transit ASes present in the Internet Routing Table: 2010 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: 10506 Number of APNIC addresses announced to Internet: 752972288 Equivalent to 44 /8s, 225 /16s and 114 /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: 300481 Total ARIN prefixes after maximum aggregation: 134974 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 300777 Unique aggregates announced from the ARIN address blocks: 145617 ARIN Region origin ASes present in the Internet Routing Table: 19384 ARIN Prefixes per ASN: 15.52 ARIN Region origin ASes announcing only one prefix: 7065 ARIN Region transit ASes present in the Internet Routing Table: 1985 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: 5425 Number of ARIN addresses announced to Internet: 1343162624 Equivalent to 80 /8s, 15 /16s and 9 /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: 283191 Total RIPE prefixes after maximum aggregation: 140055 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284097 Unique aggregates announced from the RIPE address blocks: 184138 RIPE Region origin ASes present in the Internet Routing Table: 29118 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12069 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: 12895 Number of RIPE addresses announced to Internet: 735358976 Equivalent to 43 /8s, 212 /16s and 176 /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: 125835 Total LACNIC prefixes after maximum aggregation: 30618 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121611 Unique aggregates announced from the LACNIC address blocks: 49733 LACNIC Region origin ASes present in the Internet Routing Table: 11331 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2683 LACNIC Region transit ASes present in the Internet Routing Table: 2572 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: 9333 Number of LACNIC addresses announced to Internet: 170484992 Equivalent to 10 /8s, 41 /16s and 101 /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: 36121 Total AfriNIC prefixes after maximum aggregation: 6888 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 53015 Unique aggregates announced from the AfriNIC address blocks: 19399 AfriNIC Region origin ASes present in the Internet Routing Table: 2003 AfriNIC Prefixes per ASN: 26.47 AfriNIC Region origin ASes announcing only one prefix: 736 AfriNIC Region transit ASes present in the Internet Routing Table: 385 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 64 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1366 Number of AfriNIC addresses announced to Internet: 103261440 Equivalent to 6 /8s, 39 /16s and 165 /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 13366 8729 119 CHINAMOBILE-CN China Mobile Communication 7545 6035 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4643 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4323 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4043 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3727 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3387 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3323 1868 97 VNPT-AS-VN VNPT Corp, VN 17561 3179 200 637 LCS-AS-AP LARUS Limited, HK 24560 2955 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 14003 38462 5445 AMAZON-02, US 22773 4747 3113 375 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3689 1320 82 SHAW, CA 174 3403 8767 856 COGENT-174, US 396982 3317 4867 491 GOOGLE-CLOUD-PLATFORM, US 749 3144 54729 2395 DNIC-AS-00749, US 16625 2967 1275 2173 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 7285 1711 149 UNI2-AS, ES 39891 4901 302 70 ALJAWWALSTC-AS, SA 9009 3961 369 2268 M247, RO 20940 3953 3394 123 AKAMAI-ASN1, NL 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2567 182 1865 CDNEXT, GB 34984 2421 371 575 TELLCOM-AS, TR 8452 1699 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 12641 3277 590 UNINET, MX 10620 3397 454 1158 Telmex Colombia S.A., CO 13999 2487 506 351 Mega Cable, S.A. de C.V., MX 11830 1987 369 65 Instituto Costarricense de Electricidad y 11664 1369 278 31 Techtel LMDS Comunicaciones Interactivas 28573 1369 2429 273 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1259 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 1940 402 13 RAYA-AS, EG 36992 1847 1538 336 ETISALAT-MISR, EG 24863 1262 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1099 1084 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1058 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 562 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 14003 38462 5445 AMAZON-02, US 9808 13366 8729 119 CHINAMOBILE-CN China Mobile Communication 8151 12641 3277 590 UNINET, MX 12479 7285 1711 149 UNI2-AS, ES 7545 6035 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 302 70 ALJAWWALSTC-AS, SA 22773 4747 3113 375 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 9498 4643 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4323 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 13366 13247 CHINAMOBILE-CN China Mobile Communications Grou 8151 12641 12051 UNINET, MX 12479 7285 7136 UNI2-AS, ES 7545 6035 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 4831 ALJAWWALSTC-AS, SA 22773 4747 4372 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4643 4310 BBIL-AP BHARTI Airtel Ltd., IN 18403 4323 4299 FPT-AS-AP FPT Telecom Company, VN 7552 4043 4014 VIETEL-AS-AP Viettel Group, VN 20940 3953 3830 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 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 21861 UNALLOCATED 12.37.59.0/24 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 /13:582 /14:1205 /15:2095 /16:13682 /17:8225 /18:13500 /19:24825 /20:44837 /21:52133 /22:113238 /23:105937 /24:642775 /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 6846 12641 UNINET, MX 12479 6216 7285 UNI2-AS, ES 39891 3587 4901 ALJAWWALSTC-AS, SA 11492 3533 4688 CABLEONE, US 6327 3478 3689 SHAW, CA 22773 3052 4747 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2455 14003 AMAZON-02, US 30036 2323 2666 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2180 3397 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 2:1546 3:978 4:10 5:4981 6:185 7:6 8:1503 9:10 11:172 12:1230 13:600 14:2626 15:417 16:274 17:383 18:914 20:587 21:4 22:188 23:8142 24:2610 25:2 27:2822 29:19 31:3393 32:31 33:1 34:81 35:286 36:4623 37:4517 38:10370 39:1218 40:437 41:4518 42:1915 43:2890 44:412 45:19586 46:5072 47:395 49:2156 50:2062 51:597 52:1257 54:225 55:1124 56:11 57:311 58:2296 59:1330 60:1171 61:3059 62:3108 63:1758 64:5999 65:2123 66:5929 67:3247 68:1501 69:4212 70:1025 71:625 72:3073 74:2940 75:1519 76:597 77:2746 78:1927 79:1799 80:2300 81:2090 82:3944 83:1476 84:2032 85:3646 86:1098 87:2206 88:1359 89:4619 90:836 91:8437 92:2835 93:3007 94:4270 95:4550 96:1452 97:312 98:957 99:782 100:68 101:1313 102:4340 103:32274 104:5465 105:782 106:920 107:2815 108:1213 109:4262 110:2303 111:3991 112:2828 113:1907 114:2092 115:2308 116:2154 117:3123 118:2979 119:2079 120:2425 121:1517 122:2948 123:2293 124:1605 125:2935 126:125 128:1612 129:961 130:1547 131:2254 132:761 133:462 134:1639 135:539 136:1503 137:1409 138:3010 139:1601 140:1776 141:1560 142:2435 143:2125 144:1372 145:626 146:2192 147:2142 148:2791 149:2911 150:1313 151:2573 152:2260 153:888 154:9519 155:2272 156:4751 157:2261 158:1474 159:2732 160:3747 161:1995 162:3989 163:2332 164:1961 165:2646 166:1305 167:2197 168:3916 169:815 170:5457 171:1119 172:4548 173:3420 174:901 175:1341 176:3785 177:4730 178:4317 179:2286 180:2824 181:4336 182:3872 183:2670 184:2041 185:21738 186:5519 187:4776 188:4533 189:4462 190:9669 191:1537 192:11441 193:9517 194:7867 195:5648 196:3261 197:3185 198:6227 199:6111 200:8205 201:6376 202:10516 203:10628 204:4676 205:3770 206:4438 207:3948 208:4370 209:5499 210:4776 211:2680 212:4931 213:4041 214:1064 215:54 216:7127 217:3465 218:1608 219:409 220:2184 221:1297 222:776 223:3228 End of report