IPv4 R&E Routing Table Report 21:10 GMT Sat 06 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: 1018684 Prefixes after maximum aggregation (per Origin AS): 393362 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504227 Number of IPv4 prefixes with a valid ROA: 598302 Number of IPv4 prefixes with an invalid ROA: 122 Number of IPv4 prefixes with no ROA: 420260 Total ASes present in the Internet Routing Table: 77581 Prefixes per ASN: 13.13 Origin-only ASes present in the Internet Routing Table: 66394 Origin ASes announcing only one prefix: 27109 Transit ASes present in the Internet Routing Table: 11187 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: 940 Number of instances of unregistered ASNs: 981 Number of 32-bit ASNs allocated by the RIRs: 48158 Number of 32-bit ASNs visible in the Routing Table: 39421 Prefixes from 32-bit ASNs in the Routing Table: 217253 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: 437 Number of addresses announced to Internet: 3100020736 Equivalent to 184 /8s, 198 /16s and 144 /24s Percentage of available address space announced: 83.7 Percentage of allocated address space announced: 83.7 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: 333229 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274719 Total APNIC prefixes after maximum aggregation: 80742 APNIC Deaggregation factor: 3.40 Prefixes being announced from the APNIC address blocks: 262254 Unique aggregates announced from the APNIC address blocks: 106205 APNIC Region origin ASes present in the Internet Routing Table: 14897 APNIC Prefixes per ASN: 17.60 APNIC Region origin ASes announcing only one prefix: 4546 APNIC Region transit ASes present in the Internet Routing Table: 2000 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10465 Number of APNIC addresses announced to Internet: 752742912 Equivalent to 44 /8s, 221 /16s and 242 /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: 299365 Total ARIN prefixes after maximum aggregation: 134616 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299046 Unique aggregates announced from the ARIN address blocks: 145722 ARIN Region origin ASes present in the Internet Routing Table: 19388 ARIN Prefixes per ASN: 15.42 ARIN Region origin ASes announcing only one prefix: 7101 ARIN Region transit ASes present in the Internet Routing Table: 1984 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: 5431 Number of ARIN addresses announced to Internet: 1337394432 Equivalent to 79 /8s, 183 /16s and 5 /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: 282379 Total RIPE prefixes after maximum aggregation: 139941 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283422 Unique aggregates announced from the RIPE address blocks: 183854 RIPE Region origin ASes present in the Internet Routing Table: 29099 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12049 RIPE Region transit ASes present in the Internet Routing Table: 4051 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: 12854 Number of RIPE addresses announced to Internet: 735779072 Equivalent to 43 /8s, 219 /16s and 25 /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: 125745 Total LACNIC prefixes after maximum aggregation: 30536 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121711 Unique aggregates announced from the LACNIC address blocks: 49757 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: 2678 LACNIC Region transit ASes present in the Internet Routing Table: 2569 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: 9317 Number of LACNIC addresses announced to Internet: 170696448 Equivalent to 10 /8s, 44 /16s and 159 /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: 35536 Total AfriNIC prefixes after maximum aggregation: 6888 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 51813 Unique aggregates announced from the AfriNIC address blocks: 18310 AfriNIC Region origin ASes present in the Internet Routing Table: 1994 AfriNIC Prefixes per ASN: 25.98 AfriNIC Region origin ASes announcing only one prefix: 735 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: 1354 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 13288 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6047 835 593 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4599 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4406 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4012 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3709 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3337 827 181 CMNET-JIANGSU-AP China Mobile communicati 45899 3315 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2949 864 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2515 275 1936 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14289 37210 5415 AMAZON-02, US 22773 4777 3115 372 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3314 4862 488 GOOGLE-CLOUD-PLATFORM, US 749 3208 54760 2459 DNIC-AS-00749, US 16625 3001 1289 2188 AKAMAI-AS, US 36352 2818 231 916 AS-COLOCROSSING, US 174 2668 8767 841 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 7287 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3989 375 2284 M247, RO 20940 3980 3395 126 AKAMAI-ASN1, NL 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2540 180 1838 CDNEXT, GB 34984 2424 363 576 TELLCOM-AS, TR 8452 1672 1852 14 TE-AS TE-AS, EG 203020 1614 241 782 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 12654 3291 585 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2508 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1373 2431 267 Claro NXT Telecomunicacoes Ltda, BR 11664 1356 278 33 Techtel LMDS Comunicaciones Interactivas 3816 1347 779 211 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1264 371 22 Telefonica del Peru S.A.A., PE 22884 1058 70 360 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1016 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 1924 368 14 RAYA-AS, EG 36992 1683 1509 399 ETISALAT-MISR, EG 24863 1260 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1093 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1036 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 566 82 3 KENET-AS, KE 15399 550 57 59 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 14289 37210 5415 AMAZON-02, US 9808 13288 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12654 3291 585 UNINET, MX 12479 7287 1711 149 UNI2-AS, ES 7545 6047 835 593 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4777 3115 372 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4599 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4406 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 13288 13168 CHINAMOBILE-CN China Mobile Communications Grou 8151 12654 12069 UNINET, MX 12479 7287 7138 UNI2-AS, ES 7545 6047 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4777 4405 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4406 4382 FPT-AS-AP FPT Telecom Company, VN 9498 4599 4263 BBIL-AP BHARTI Airtel Ltd., IN 7552 4012 3984 VIETEL-AS-AP Viettel Group, VN 20940 3980 3854 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 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 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 23.141.0.0/24 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 /11:94 /12:298 /13:582 /14:1203 /15:2094 /16:13680 /17:8228 /18:13487 /19:24806 /20:44617 /21:52095 /22:113058 /23:105410 /24:638960 /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 6854 12654 UNINET, MX 12479 6217 7287 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3049 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2434 14289 AMAZON-02, US 30036 2318 2661 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 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) ---------------------------------------------- 1:2443 2:1569 3:977 4:10 5:4934 6:190 7:6 8:1499 9:6 11:172 12:1230 13:571 14:2602 15:414 16:303 17:388 18:913 20:587 21:4 22:188 23:8129 24:2610 25:2 27:2814 29:19 31:3391 32:31 33:1 34:81 35:285 36:4596 37:4549 38:9359 39:1193 40:446 41:4437 42:1950 43:2842 44:400 45:19444 46:5107 47:386 49:2149 50:2056 51:597 52:1567 54:289 55:1102 56:11 57:304 58:2291 59:1318 60:1167 61:3055 62:3092 63:1744 64:5970 65:2123 66:5905 67:3242 68:1495 69:4200 70:1022 71:627 72:3043 74:2940 75:1521 76:600 77:2770 78:1913 79:1780 80:2303 81:2099 82:3835 83:1458 84:2034 85:3643 86:1103 87:2171 88:1347 89:4562 90:840 91:8436 92:2852 93:3019 94:4225 95:4563 96:1466 97:312 98:951 99:773 100:68 101:1340 102:4319 103:32223 104:5499 105:790 106:912 107:2807 108:1202 109:4232 110:2293 111:3915 112:2789 113:1924 114:2097 115:2306 116:2155 117:3134 118:3010 119:2062 120:2381 121:1512 122:2947 123:2297 124:1601 125:2906 126:125 128:1616 129:963 130:1527 131:2270 132:768 133:462 134:1625 135:493 136:1505 137:1341 138:2919 139:1597 140:1725 141:1550 142:2343 143:2134 144:1354 145:629 146:2187 147:2142 148:2793 149:2885 150:1306 151:2617 152:2279 153:835 154:9151 155:2253 156:4238 157:2241 158:1474 159:2697 160:3738 161:1994 162:4009 163:2326 164:1963 165:2619 166:1307 167:2151 168:3920 169:804 170:5438 171:1114 172:4528 173:3422 174:907 175:1341 176:3777 177:4737 178:4299 179:2292 180:2836 181:4341 182:3838 183:2620 184:2070 185:21685 186:5518 187:4782 188:4429 189:4504 190:9695 191:1561 192:11450 193:9509 194:7852 195:5617 196:3294 197:3198 198:6220 199:6094 200:8207 201:6389 202:10452 203:10595 204:4640 205:3737 206:4404 207:3925 208:4287 209:5451 210:4773 211:2679 212:4892 213:4015 214:1025 215:53 216:7087 217:3390 218:1593 219:404 220:2188 221:1288 222:776 223:3183 End of report