IPv4 R&E Routing Table Report 21:10 GMT Thu 19 Mar, 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: 1037086 Prefixes after maximum aggregation (per Origin AS): 398842 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511885 Number of IPv4 prefixes with a valid ROA: 624613 Number of IPv4 prefixes with an invalid ROA: 99 Number of IPv4 prefixes with no ROA: 412374 Total ASes present in the Internet Routing Table: 78147 Prefixes per ASN: 13.27 Origin-only ASes present in the Internet Routing Table: 66869 Origin ASes announcing only one prefix: 27291 Transit ASes present in the Internet Routing Table: 11278 Transit-only ASes present in the Internet Routing Table: 585 Paths with bogon ASNs present in the IPv4 Routing Table: 9 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 68 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 1042 Number of instances of unregistered ASNs: 1072 Number of 32-bit ASNs allocated by the RIRs: 49024 Number of 32-bit ASNs visible in the Routing Table: 40160 Prefixes from 32-bit ASNs in the Routing Table: 224669 Number of bogon 32-bit ASNs visible in the Routing Table: 76 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 400 Number of addresses announced to Internet: 3107778048 Equivalent to 185 /8s, 60 /16s and 238 /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: 337827 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281150 Total APNIC prefixes after maximum aggregation: 82140 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 268263 Unique aggregates announced from the APNIC address blocks: 107172 APNIC Region origin ASes present in the Internet Routing Table: 15129 APNIC Prefixes per ASN: 17.73 APNIC Region origin ASes announcing only one prefix: 4634 APNIC Region transit ASes present in the Internet Routing Table: 2051 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 52 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10685 Number of APNIC addresses announced to Internet: 751664384 Equivalent to 44 /8s, 205 /16s and 125 /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: 305064 Total ARIN prefixes after maximum aggregation: 137230 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 303763 Unique aggregates announced from the ARIN address blocks: 147073 ARIN Region origin ASes present in the Internet Routing Table: 19406 ARIN Prefixes per ASN: 15.65 ARIN Region origin ASes announcing only one prefix: 7070 ARIN Region transit ASes present in the Internet Routing Table: 1980 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: 5525 Number of ARIN addresses announced to Internet: 1349363968 Equivalent to 80 /8s, 109 /16s and 169 /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: 285921 Total RIPE prefixes after maximum aggregation: 141142 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 288638 Unique aggregates announced from the RIPE address blocks: 187674 RIPE Region origin ASes present in the Internet Routing Table: 29322 RIPE Prefixes per ASN: 9.84 RIPE Region origin ASes announcing only one prefix: 12152 RIPE Region transit ASes present in the Internet Routing Table: 4062 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: 13183 Number of RIPE addresses announced to Internet: 732650752 Equivalent to 43 /8s, 171 /16s and 93 /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: 127038 Total LACNIC prefixes after maximum aggregation: 30687 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 122706 Unique aggregates announced from the LACNIC address blocks: 50258 LACNIC Region origin ASes present in the Internet Routing Table: 11372 LACNIC Prefixes per ASN: 10.79 LACNIC Region origin ASes announcing only one prefix: 2699 LACNIC Region transit ASes present in the Internet Routing Table: 2586 Average LACNIC Region AS path length visible: 5.2 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9386 Number of LACNIC addresses announced to Internet: 170396416 Equivalent to 10 /8s, 40 /16s and 11 /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: 36871 Total AfriNIC prefixes after maximum aggregation: 6967 AfriNIC Deaggregation factor: 5.29 Prefixes being announced from the AfriNIC address blocks: 53315 Unique aggregates announced from the AfriNIC address blocks: 19357 AfriNIC Region origin ASes present in the Internet Routing Table: 2015 AfriNIC Prefixes per ASN: 26.46 AfriNIC Region origin ASes announcing only one prefix: 736 AfriNIC Region transit ASes present in the Internet Routing Table: 393 Average AfriNIC Region AS path length visible: 5.2 Max AfriNIC Region AS path length visible: 62 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1381 Number of AfriNIC addresses announced to Internet: 103441664 Equivalent to 6 /8s, 42 /16s and 101 /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 13761 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5946 829 515 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4848 548 321 BBIL-AP BHARTI Airtel Ltd., IN 18403 4595 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3913 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3674 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3474 886 176 CMNET-JIANGSU-AP China Mobile communicati 45899 3328 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 3008 865 512 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2841 179 555 LCS-AS-AP LARUS Limited, HK 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 14498 41220 5584 AMAZON-02 - Amazon.com, Inc., US 22773 4779 3117 368 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4646 308 1021 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3708 1321 75 SHAW - Shaw Communications, CA 396982 3292 4856 486 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3200 8764 842 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 16625 2836 1248 2152 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2701 221 896 AS-COLOCROSSING - HostPapa, 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 7204 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3946 3389 111 AKAMAI-ASN1, NL 9009 3824 355 2244 M247, RO 12389 3151 2320 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2679 194 1962 CDNEXT, GB 34984 2463 366 569 TELLCOM-AS, TR 8452 1697 1852 14 TE-AS TE-AS, EG 203020 1630 247 806 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 12815 3302 596 UNINET, MX 10620 3453 458 1104 Telmex Colombia S.A., CO 13999 2459 506 344 Mega Cable, S.A. de C.V., MX 11830 1956 369 65 Instituto Costarricense de Electricidad y 11664 1453 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1372 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1341 770 214 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1244 371 22 INTEGRATEL PERU S.A.A., PE 22884 1057 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1057 2475 94 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 2045 648 34 RAYA-AS, EG 36992 1843 1531 336 ETISALAT-MISR, EG 24863 1287 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1199 521 44 Vodafone-, EG 37069 1108 1100 11 MOBINIL, EG 29571 1072 78 20 ORANGE-COTE-IVOIRE, CI 20011 586 155 217 NTT-DATA-Inc, ZA 36914 559 82 3 KENET-AS, KE 15399 551 57 61 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 14498 41220 5584 AMAZON-02 - Amazon.com, Inc., US 9808 13761 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12815 3302 596 UNINET, MX 12479 7204 1711 149 UNI2-AS, ES 7545 5946 829 515 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4848 548 321 BBIL-AP BHARTI Airtel Ltd., IN 22773 4779 3117 368 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4646 308 1021 CABLEONE - CABLE ONE, INC., US 18403 4595 347 25 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 13761 13641 CHINAMOBILE-CN China Mobile Communications Grou 8151 12815 12219 UNINET, MX 12479 7204 7055 UNI2-AS, ES 7545 5946 5431 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4595 4570 FPT-AS-AP FPT Telecom Company, VN 9498 4848 4527 BBIL-AP BHARTI Airtel Ltd., IN 22773 4779 4411 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 3913 3884 VIETEL-AS-AP Viettel Group, VN 20940 3946 3835 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 - C 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 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En 397665 UNALLOCATED 12.24.28.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 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 - 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 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, 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 /10:40 /11:95 /12:297 /13:584 /14:1197 /15:2105 /16:13621 /17:8295 /18:13311 /19:25420 /20:45761 /21:52273 /22:113893 /23:107535 /24:652628 /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 6974 12815 UNINET, MX 12479 6145 7204 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3507 4646 CABLEONE - CABLE ONE, INC., US 6327 3489 3708 SHAW - Shaw Communications, CA 22773 3048 4779 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2600 14498 AMAZON-02 - Amazon.com, Inc., US 30036 2317 2665 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3453 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) ---------------------------------------------- 1:2481 2:1682 3:1003 4:5 5:5135 6:197 7:6 8:1500 9:38 11:172 12:1186 13:656 14:2672 15:460 16:168 17:422 18:918 20:603 21:4 22:188 23:8253 24:2838 25:2 27:2822 28:1 29:19 31:3402 32:32 34:87 35:292 36:4633 37:4469 38:9972 39:1273 40:409 41:4558 42:2141 43:3021 44:445 45:19868 46:4904 47:407 48:97 49:2195 50:2069 51:611 52:1303 54:277 55:1104 56:11 57:319 58:2341 59:1351 60:1174 61:3123 62:3122 63:1755 64:6245 65:2110 66:6012 67:3260 68:1502 69:4214 70:1047 71:623 72:3129 74:3002 75:1498 76:592 77:2883 78:1917 79:1798 80:2341 81:2200 82:4013 83:1448 84:2077 85:3818 86:1104 87:2298 88:1351 89:4700 90:797 91:8432 92:2846 93:3019 94:4311 95:4648 96:1447 97:314 98:947 99:801 100:68 101:1450 102:4466 103:32478 104:5472 105:813 106:925 107:2849 108:1225 109:4204 110:2291 111:4099 112:3157 113:1977 114:2260 115:2277 116:2175 117:3488 118:2998 119:2067 120:2692 121:1555 122:2990 123:2277 124:1619 125:2980 126:125 128:1697 129:969 130:1608 131:2475 132:806 133:463 134:1641 135:596 136:1593 137:1544 138:3181 139:1648 140:1776 141:1596 142:2546 143:2151 144:1754 145:631 146:2201 147:2157 148:2735 149:3065 150:1342 151:2702 152:2307 153:1019 154:9525 155:2321 156:4399 157:2274 158:1506 159:2778 160:3814 161:1960 162:4026 163:2443 164:2036 165:2632 166:1300 167:2249 168:3980 169:894 170:5514 171:1107 172:4631 173:3463 174:885 175:1355 176:3837 177:4878 178:4326 179:2285 180:3029 181:4461 182:4020 183:2838 184:2017 185:21825 186:5705 187:4936 188:4554 189:4519 190:9751 191:1545 192:11528 193:9598 194:7862 195:5745 196:3312 197:3238 198:6292 199:6114 200:8191 201:6396 202:10715 203:10655 204:4752 205:3764 206:4522 207:4012 208:4389 209:5465 210:4784 211:2684 212:4989 213:4131 214:1061 215:46 216:7265 217:3545 218:1693 219:418 220:2159 221:1313 222:933 223:3319 End of report