IPv4 R&E Routing Table Report 21:10 GMT Wed 20 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: 1047714 Prefixes after maximum aggregation (per Origin AS): 401904 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 517458 Number of IPv4 prefixes with a valid ROA: 654402 Number of IPv4 prefixes with an invalid ROA: 104 Number of IPv4 prefixes with no ROA: 393208 Total ASes present in the Internet Routing Table: 78491 Prefixes per ASN: 13.35 Origin-only ASes present in the Internet Routing Table: 67199 Origin ASes announcing only one prefix: 27433 Transit ASes present in the Internet Routing Table: 11292 Transit-only ASes present in the Internet Routing Table: 592 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: 1132 Number of instances of unregistered ASNs: 1162 Number of 32-bit ASNs allocated by the RIRs: 49818 Number of 32-bit ASNs visible in the Routing Table: 40654 Prefixes from 32-bit ASNs in the Routing Table: 230185 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: 3103436544 Equivalent to 184 /8s, 250 /16s and 175 /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: 343010 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 284242 Total APNIC prefixes after maximum aggregation: 83060 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 270616 Unique aggregates announced from the APNIC address blocks: 107981 APNIC Region origin ASes present in the Internet Routing Table: 15202 APNIC Prefixes per ASN: 17.80 APNIC Region origin ASes announcing only one prefix: 4648 APNIC Region transit ASes present in the Internet Routing Table: 2049 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: 10784 Number of APNIC addresses announced to Internet: 747623168 Equivalent to 44 /8s, 143 /16s and 211 /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: 304146 Total ARIN prefixes after maximum aggregation: 136910 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 302942 Unique aggregates announced from the ARIN address blocks: 147724 ARIN Region origin ASes present in the Internet Routing Table: 19428 ARIN Prefixes per ASN: 15.59 ARIN Region origin ASes announcing only one prefix: 7108 ARIN Region transit ASes present in the Internet Routing Table: 1975 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: 5586 Number of ARIN addresses announced to Internet: 1347632640 Equivalent to 80 /8s, 83 /16s and 62 /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: 290503 Total RIPE prefixes after maximum aggregation: 143376 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 294133 Unique aggregates announced from the RIPE address blocks: 191698 RIPE Region origin ASes present in the Internet Routing Table: 29505 RIPE Prefixes per ASN: 9.97 RIPE Region origin ASes announcing only one prefix: 12232 RIPE Region transit ASes present in the Internet Routing Table: 4080 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: 13445 Number of RIPE addresses announced to Internet: 733946112 Equivalent to 43 /8s, 191 /16s and 33 /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: 130158 Total LACNIC prefixes after maximum aggregation: 30832 LACNIC Deaggregation factor: 4.22 Prefixes being announced from the LACNIC address blocks: 124568 Unique aggregates announced from the LACNIC address blocks: 50353 LACNIC Region origin ASes present in the Internet Routing Table: 11399 LACNIC Prefixes per ASN: 10.93 LACNIC Region origin ASes announcing only one prefix: 2709 LACNIC Region transit ASes present in the Internet Routing Table: 2603 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: 9444 Number of LACNIC addresses announced to Internet: 169714176 Equivalent to 10 /8s, 29 /16s and 162 /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: 37533 Total AfriNIC prefixes after maximum aggregation: 7076 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 55013 Unique aggregates announced from the AfriNIC address blocks: 19324 AfriNIC Region origin ASes present in the Internet Routing Table: 2028 AfriNIC Prefixes per ASN: 27.13 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: 1395 Number of AfriNIC addresses announced to Internet: 104322304 Equivalent to 6 /8s, 55 /16s and 213 /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 13907 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5879 825 479 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4938 552 329 BBIL-AP BHARTI Airtel Ltd., IN 18403 4520 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 3457 217 604 LCS-AS-AP LARUS Limited, HK 45899 3371 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2736 744 735 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 15014 41329 5703 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 3348 4865 507 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3137 54728 2388 DNIC-AS-00749 - United States Department 36352 2911 222 921 AS-COLOCROSSING - HostPapa, US 7029 2634 2558 886 WINDSTREAM - Windstream Communications LL 30036 2577 357 534 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 7136 1711 149 UNI2-AS, ES 39891 4975 307 72 ALJAWWALSTC-AS, SA 9009 3941 363 2349 M247, RO 20940 3914 3389 110 AKAMAI-ASN1, NL 12389 3141 2321 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2795 206 2063 CDNEXT, GB 34984 2491 367 584 TELLCOM-AS, TR 8452 1711 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 632 UNINET, MX 10620 3434 450 1103 Telmex Colombia S.A., CO 13999 2362 501 356 Mega Cable, S.A. de C.V., MX 11830 1936 369 65 Instituto Costarricense de Electricidad y 11664 1470 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1364 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1223 371 22 INTEGRATEL PERU S.A.A., PE 22884 1076 70 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1075 2392 100 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 2028 649 36 RAYA-AS, EG 36992 1860 1532 337 ETISALAT-MISR, EG 36935 1292 523 45 Vodafone-, EG 24863 1266 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 636 57 172 Africa-on-Cloud-AS, ZA 36914 554 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 15014 41329 5703 AMAZON-02 - Amazon.com, Inc., US 9808 13907 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12747 3254 632 UNINET, MX 12479 7136 1711 149 UNI2-AS, ES 7545 5879 825 479 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 307 72 ALJAWWALSTC-AS, SA 9498 4938 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 4520 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 13907 13786 CHINAMOBILE-CN China Mobile Communications Grou 8151 12747 12115 UNINET, MX 12479 7136 6987 UNI2-AS, ES 7545 5879 5400 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 4903 ALJAWWALSTC-AS, SA 9498 4938 4609 BBIL-AP BHARTI Airtel Ltd., IN 18403 4520 4496 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 3914 3804 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 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 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 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 /16:13599 /17:8290 /18:13362 /19:25489 /20:45808 /21:52404 /22:113474 /23:108582 /24:662357 /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 6969 12747 UNINET, MX 12479 6072 7136 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 2713 15014 AMAZON-02 - Amazon.com, Inc., US 10620 2238 3434 Telmex Colombia S.A., CO 30036 2232 2577 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2488 2:2073 3:1001 4:5 5:5114 6:201 7:6 8:1472 9:59 11:172 12:1141 13:721 14:2718 15:467 16:215 17:443 18:920 20:609 21:4 22:188 23:8363 24:2774 25:2 27:2823 28:1 29:19 31:3551 32:36 34:87 35:284 36:4777 37:4446 38:9683 39:1297 40:412 41:4570 42:2187 43:3163 44:453 45:19755 46:4897 47:413 48:151 49:2246 50:2010 51:768 52:1332 54:289 55:1107 56:11 57:325 58:2345 59:1381 60:1175 61:3172 62:3137 63:1686 64:6376 65:2146 66:6126 67:3276 68:1514 69:4219 70:1056 71:617 72:3181 74:3064 75:1500 76:598 77:2944 78:2042 79:1787 80:2340 81:2255 82:4167 83:1459 84:2164 85:3855 86:1097 87:2583 88:1321 89:4782 90:796 91:8475 92:2789 93:3032 94:4407 95:4703 96:1446 97:307 98:949 99:836 100:70 101:1465 102:4616 103:32509 104:5372 105:851 106:897 107:2943 108:1276 109:4274 110:2281 111:4123 112:3164 113:1977 114:2388 115:2338 116:2076 117:3489 118:3044 119:2078 120:2740 121:1559 122:3024 123:2304 124:1658 125:2986 126:158 128:1600 129:975 130:1685 131:2440 132:882 133:486 134:1722 135:615 136:1464 137:1565 138:3415 139:1709 140:1842 141:1755 142:2556 143:2040 144:1788 145:635 146:2190 147:2258 148:2763 149:3161 150:1379 151:2921 152:2354 153:1698 154:9578 155:2288 156:5163 157:2444 158:1578 159:2870 160:3840 161:1986 162:4100 163:2593 164:2427 165:2678 166:1265 167:2320 168:4051 169:871 170:5623 171:1137 172:4813 173:3451 174:885 175:1356 176:3955 177:5064 178:4409 179:2414 180:3066 181:4578 182:4047 183:2841 184:2021 185:21887 186:6198 187:5078 188:4510 189:4558 190:9888 191:2000 192:11538 193:9621 194:7874 195:5833 196:3436 197:3247 198:6289 199:6056 200:8296 201:6430 202:10700 203:10679 204:4805 205:3748 206:4438 207:3997 208:4369 209:5502 210:4757 211:2691 212:5087 213:4120 214:1040 215:47 216:7312 217:3615 218:1755 219:413 220:2220 221:1321 222:936 223:3442 End of report