IPv4 R&E Routing Table Report 21:10 GMT Tue 19 May, 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: 1046991 Prefixes after maximum aggregation (per Origin AS): 401843 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 517433 Number of IPv4 prefixes with a valid ROA: 649615 Number of IPv4 prefixes with an invalid ROA: 103 Number of IPv4 prefixes with no ROA: 397273 Total ASes present in the Internet Routing Table: 78494 Prefixes per ASN: 13.34 Origin-only ASes present in the Internet Routing Table: 67185 Origin ASes announcing only one prefix: 27443 Transit ASes present in the Internet Routing Table: 11309 Transit-only ASes present in the Internet Routing Table: 593 Paths with bogon ASNs present in the IPv4 Routing Table: 8 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: 1135 Number of instances of unregistered ASNs: 1165 Number of 32-bit ASNs allocated by the RIRs: 49789 Number of 32-bit ASNs visible in the Routing Table: 40654 Prefixes from 32-bit ASNs in the Routing Table: 230208 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 441 Number of addresses announced to Internet: 3102927104 Equivalent to 184 /8s, 242 /16s and 233 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 342745 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 284258 Total APNIC prefixes after maximum aggregation: 83083 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 270561 Unique aggregates announced from the APNIC address blocks: 107946 APNIC Region origin ASes present in the Internet Routing Table: 15207 APNIC Prefixes per ASN: 17.79 APNIC Region origin ASes announcing only one prefix: 4649 APNIC Region transit ASes present in the Internet Routing Table: 2052 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10788 Number of APNIC addresses announced to Internet: 747563520 Equivalent to 44 /8s, 142 /16s and 234 /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: 303920 Total ARIN prefixes after maximum aggregation: 136811 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 302865 Unique aggregates announced from the ARIN address blocks: 147723 ARIN Region origin ASes present in the Internet Routing Table: 19422 ARIN Prefixes per ASN: 15.59 ARIN Region origin ASes announcing only one prefix: 7112 ARIN Region transit ASes present in the Internet Routing Table: 1978 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: 5584 Number of ARIN addresses announced to Internet: 1347510528 Equivalent to 80 /8s, 81 /16s and 97 /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, 393216-404380 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: 290546 Total RIPE prefixes after maximum aggregation: 143424 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 294095 Unique aggregates announced from the RIPE address blocks: 191743 RIPE Region origin ASes present in the Internet Routing Table: 29501 RIPE Prefixes per ASN: 9.97 RIPE Region origin ASes announcing only one prefix: 12228 RIPE Region transit ASes present in the Internet Routing Table: 4086 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 37 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13439 Number of RIPE addresses announced to Internet: 733984512 Equivalent to 43 /8s, 191 /16s and 183 /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: 129929 Total LACNIC prefixes after maximum aggregation: 30818 LACNIC Deaggregation factor: 4.22 Prefixes being announced from the LACNIC address blocks: 124353 Unique aggregates announced from the LACNIC address blocks: 50352 LACNIC Region origin ASes present in the Internet Routing Table: 11401 LACNIC Prefixes per ASN: 10.91 LACNIC Region origin ASes announcing only one prefix: 2718 LACNIC Region transit ASes present in the Internet Routing Table: 2604 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: 9447 Number of LACNIC addresses announced to Internet: 169707776 Equivalent to 10 /8s, 29 /16s and 137 /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: 37203 Total AfriNIC prefixes after maximum aggregation: 7051 AfriNIC Deaggregation factor: 5.28 Prefixes being announced from the AfriNIC address blocks: 54675 Unique aggregates announced from the AfriNIC address blocks: 19289 AfriNIC Region origin ASes present in the Internet Routing Table: 2030 AfriNIC Prefixes per ASN: 26.93 AfriNIC Region origin ASes announcing only one prefix: 736 AfriNIC Region transit ASes present in the Internet Routing Table: 394 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 62 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1396 Number of AfriNIC addresses announced to Internet: 103961088 Equivalent to 6 /8s, 50 /16s and 82 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & 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 13905 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5882 826 481 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4939 552 329 BBIL-AP BHARTI Airtel Ltd., IN 18403 4519 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4064 1331 26 VIETEL-AS-AP Viettel Group, VN 7713 3694 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3538 886 176 CMNET-JIANGSU-AP China Mobile communicati 17561 3469 218 611 LCS-AS-AP LARUS Limited, HK 45899 3371 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2737 744 736 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 14979 41324 5700 AMAZON-02 - Amazon.com, Inc., US 22773 4761 3114 362 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4591 305 1089 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3717 1305 75 SHAW - Shaw Communications, CA 396982 3343 4865 507 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3138 54728 2389 DNIC-AS-00749 - United States Department 36352 2908 222 920 AS-COLOCROSSING - HostPapa, US 7029 2628 2558 886 WINDSTREAM - Windstream Communications LL 30036 2586 357 517 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom C 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 7131 1711 149 UNI2-AS, ES 39891 4975 307 72 ALJAWWALSTC-AS, SA 20940 3917 3389 110 AKAMAI-ASN1, NL 9009 3901 361 2324 M247, RO 12389 3141 2321 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2806 206 2074 CDNEXT, GB 34984 2490 367 583 TELLCOM-AS, TR 8452 1712 1852 14 TE-AS TE-AS, EG 203020 1653 252 829 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 12747 3254 631 UNINET, MX 10620 3434 450 1103 Telmex Colombia S.A., CO 13999 2353 498 354 Mega Cable, S.A. de C.V., MX 11830 1933 369 65 Instituto Costarricense de Electricidad y 11664 1469 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1367 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1226 371 22 INTEGRATEL PERU S.A.A., PE 26615 1076 2392 100 TIM SA, BR 22884 1075 70 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 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 36992 1860 1532 337 ETISALAT-MISR, EG 24835 1829 649 36 RAYA-AS, EG 36935 1273 523 45 Vodafone-, EG 24863 1265 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1086 70 18 ORANGE-COTE-IVOIRE, CI 20011 643 173 262 NTT-DATA-Inc, ZA 328608 564 53 156 Africa-on-Cloud-AS, ZA 36914 558 82 3 KENET-AS, 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 14979 41324 5700 AMAZON-02 - Amazon.com, Inc., US 9808 13905 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12747 3254 631 UNINET, MX 12479 7131 1711 149 UNI2-AS, ES 7545 5882 826 481 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 307 72 ALJAWWALSTC-AS, SA 9498 4939 552 329 BBIL-AP BHARTI Airtel Ltd., IN 22773 4761 3114 362 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4591 305 1089 CABLEONE - CABLE ONE, INC., US 18403 4519 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 13905 13784 CHINAMOBILE-CN China Mobile Communications Grou 8151 12747 12116 UNINET, MX 12479 7131 6982 UNI2-AS, ES 7545 5882 5401 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 4903 ALJAWWALSTC-AS, SA 9498 4939 4610 BBIL-AP BHARTI Airtel Ltd., IN 18403 4519 4495 FPT-AS-AP FPT Telecom Company, VN 22773 4761 4399 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4064 4038 VIETEL-AS-AP Viettel Group, VN 20940 3917 3807 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 204248 UNALLOCATED 2.26.168.0/24 1002 BYTEFILTER-AS - Bytefil 46198 UNALLOCATED 8.10.6.0/24 23520 LIBERTY-NETWORKS - Colu 46198 UNALLOCATED 8.10.7.0/24 23520 LIBERTY-NETWORKS - Colu 395729 UNALLOCATED 8.28.58.0/24 32787 PROLEXIC-TECHNOLOGIES-D 395729 UNALLOCATED 8.28.60.0/24 32787 PROLEXIC-TECHNOLOGIES-D 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 400273 UNALLOCATED 8.41.137.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.131.100.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.100.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.156.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.156.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.212.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.212.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.137.48.0/24 Origin: 16904 ARVIG-16904 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 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 /10:39 /11:95 /12:297 /13:583 /14:1190 /15:2114 /16:13597 /17:8280 /18:13354 /19:25480 /20:45793 /21:52371 /22:113242 /23:108473 /24:662052 /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 6966 12747 UNINET, MX 12479 6068 7131 UNI2-AS, ES 39891 3660 4975 ALJAWWALSTC-AS, SA 6327 3498 3717 SHAW - Shaw Communications, CA 11492 3468 4591 CABLEONE - CABLE ONE, INC., US 22773 3064 4761 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2710 14979 AMAZON-02 - Amazon.com, Inc., US 30036 2240 2586 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2238 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) ---------------------------------------------- 1:2507 2:2066 3:1001 4:5 5:5116 6:202 7:6 8:1472 9:59 11:172 12:1142 13:704 14:2717 15:467 16:214 17:443 18:914 20:608 21:4 22:188 23:8384 24:2774 25:2 27:2823 28:1 29:19 31:3576 32:36 34:88 35:284 36:4776 37:4447 38:9677 39:1293 40:412 41:4580 42:2161 43:3161 44:451 45:19748 46:4889 47:412 48:151 49:2245 50:2005 51:759 52:1332 54:289 55:1107 56:11 57:325 58:2338 59:1371 60:1175 61:3175 62:3133 63:1685 64:6379 65:2149 66:6121 67:3272 68:1511 69:4201 70:1054 71:617 72:3178 74:3065 75:1499 76:599 77:2942 78:2042 79:1787 80:2340 81:2249 82:4159 83:1460 84:2163 85:3861 86:1100 87:2584 88:1337 89:4792 90:796 91:8471 92:2791 93:3034 94:4415 95:4726 96:1445 97:308 98:949 99:836 100:70 101:1463 102:4590 103:32510 104:5370 105:851 106:897 107:2944 108:1273 109:4273 110:2282 111:4123 112:3168 113:1987 114:2388 115:2338 116:2077 117:3489 118:3043 119:2049 120:2738 121:1559 122:3024 123:2305 124:1656 125:2986 126:158 128:1597 129:982 130:1679 131:2440 132:886 133:486 134:1720 135:616 136:1483 137:1566 138:3412 139:1698 140:1841 141:1748 142:2577 143:2047 144:1785 145:637 146:2191 147:2245 148:2794 149:3156 150:1379 151:2910 152:2350 153:1696 154:9559 155:2291 156:5123 157:2445 158:1576 159:2871 160:3848 161:1989 162:4099 163:2592 164:2429 165:2678 166:1283 167:2318 168:4048 169:871 170:5630 171:1136 172:4810 173:3459 174:882 175:1356 176:3951 177:5035 178:4411 179:2380 180:3066 181:4580 182:4050 183:2839 184:2021 185:21898 186:6178 187:5048 188:4519 189:4527 190:9890 191:2001 192:11539 193:9624 194:7870 195:5828 196:3425 197:3251 198:6287 199:6048 200:8284 201:6408 202:10694 203:10676 204:4803 205:3721 206:4432 207:3999 208:4357 209:5493 210:4770 211:2691 212:5087 213:4121 214:1039 215:47 216:7306 217:3616 218:1752 219:413 220:2219 221:1320 222:937 223:3442 End of report