IPv4 R&E Routing Table Report 21:10 GMT Wed 25 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: 1036936 Prefixes after maximum aggregation (per Origin AS): 398001 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 511121 Number of IPv4 prefixes with a valid ROA: 625322 Number of IPv4 prefixes with an invalid ROA: 97 Number of IPv4 prefixes with no ROA: 411517 Total ASes present in the Internet Routing Table: 78182 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66892 Origin ASes announcing only one prefix: 27321 Transit ASes present in the Internet Routing Table: 11290 Transit-only ASes present in the Internet Routing Table: 584 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: 1046 Number of instances of unregistered ASNs: 1076 Number of 32-bit ASNs allocated by the RIRs: 49085 Number of 32-bit ASNs visible in the Routing Table: 40207 Prefixes from 32-bit ASNs in the Routing Table: 225312 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: 402 Number of addresses announced to Internet: 3106976000 Equivalent to 185 /8s, 48 /16s and 177 /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: 337711 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281681 Total APNIC prefixes after maximum aggregation: 82221 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 268686 Unique aggregates announced from the APNIC address blocks: 107180 APNIC Region origin ASes present in the Internet Routing Table: 15142 APNIC Prefixes per ASN: 17.74 APNIC Region origin ASes announcing only one prefix: 4645 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: 10696 Number of APNIC addresses announced to Internet: 751782144 Equivalent to 44 /8s, 207 /16s and 73 /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: 303842 Total ARIN prefixes after maximum aggregation: 135874 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 303343 Unique aggregates announced from the ARIN address blocks: 146465 ARIN Region origin ASes present in the Internet Routing Table: 19427 ARIN Prefixes per ASN: 15.61 ARIN Region origin ASes announcing only one prefix: 7108 ARIN Region transit ASes present in the Internet Routing Table: 1988 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: 5539 Number of ARIN addresses announced to Internet: 1348974336 Equivalent to 80 /8s, 103 /16s and 183 /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: 286528 Total RIPE prefixes after maximum aggregation: 141546 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 288629 Unique aggregates announced from the RIPE address blocks: 187585 RIPE Region origin ASes present in the Internet Routing Table: 29325 RIPE Prefixes per ASN: 9.84 RIPE Region origin ASes announcing only one prefix: 12141 RIPE Region transit ASes present in the Internet Routing Table: 4060 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: 13200 Number of RIPE addresses announced to Internet: 732352512 Equivalent to 43 /8s, 166 /16s and 208 /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: 126896 Total LACNIC prefixes after maximum aggregation: 30692 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 122534 Unique aggregates announced from the LACNIC address blocks: 50216 LACNIC Region origin ASes present in the Internet Routing Table: 11371 LACNIC Prefixes per ASN: 10.78 LACNIC Region origin ASes announcing only one prefix: 2698 LACNIC Region transit ASes present in the Internet Routing Table: 2601 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: 9392 Number of LACNIC addresses announced to Internet: 170151424 Equivalent to 10 /8s, 36 /16s and 78 /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: 36943 Total AfriNIC prefixes after maximum aggregation: 6990 AfriNIC Deaggregation factor: 5.29 Prefixes being announced from the AfriNIC address blocks: 53341 Unique aggregates announced from the AfriNIC address blocks: 19323 AfriNIC Region origin ASes present in the Internet Routing Table: 2015 AfriNIC Prefixes per ASN: 26.47 AfriNIC Region origin ASes announcing only one prefix: 729 AfriNIC Region transit ASes present in the Internet Routing Table: 388 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: 1380 Number of AfriNIC addresses announced to Internet: 103451648 Equivalent to 6 /8s, 42 /16s and 140 /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 13765 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5955 829 510 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4851 548 317 BBIL-AP BHARTI Airtel Ltd., IN 18403 4595 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4052 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 3336 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 3004 861 512 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2809 177 544 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 14506 41221 5593 AMAZON-02 - Amazon.com, Inc., US 22773 4782 3117 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4651 309 1025 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3712 1321 75 SHAW - Shaw Communications, CA 396982 3294 4856 487 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3179 8760 823 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 16625 2808 1234 2142 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2705 222 886 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 7197 1711 149 UNI2-AS, ES 39891 4971 306 72 ALJAWWALSTC-AS, SA 20940 3942 3389 111 AKAMAI-ASN1, NL 9009 3843 356 2253 M247, RO 12389 3151 2320 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2681 194 1965 CDNEXT, GB 34984 2456 365 571 TELLCOM-AS, TR 8452 1710 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 12766 3291 618 UNINET, MX 10620 3453 458 1104 Telmex Colombia S.A., CO 13999 2460 506 344 Mega Cable, S.A. de C.V., MX 11830 1959 369 65 Instituto Costarricense de Electricidad y 11664 1451 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1372 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 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 1055 2474 93 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 1854 1531 336 ETISALAT-MISR, EG 24863 1286 389 16 LINKdotNET-AS, EG 36935 1247 524 47 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1072 78 20 ORANGE-COTE-IVOIRE, CI 20011 587 154 220 NTT-DATA-Inc, ZA 36914 555 82 3 KENET-AS, KE 15399 550 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 14506 41221 5593 AMAZON-02 - Amazon.com, Inc., US 9808 13765 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12766 3291 618 UNINET, MX 12479 7197 1711 149 UNI2-AS, ES 7545 5955 829 510 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4971 306 72 ALJAWWALSTC-AS, SA 9498 4851 548 317 BBIL-AP BHARTI Airtel Ltd., IN 22773 4782 3117 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4651 309 1025 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 13765 13645 CHINAMOBILE-CN China Mobile Communications Grou 8151 12766 12148 UNINET, MX 12479 7197 7048 UNI2-AS, ES 7545 5955 5445 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4971 4899 ALJAWWALSTC-AS, SA 18403 4595 4570 FPT-AS-AP FPT Telecom Company, VN 9498 4851 4534 BBIL-AP BHARTI Airtel Ltd., IN 22773 4782 4416 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4052 4023 VIETEL-AS-AP Viettel Group, VN 20940 3942 3831 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 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.195.0/24 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 23.137.48.0/24 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 /13:585 /14:1199 /15:2104 /16:13600 /17:8301 /18:13310 /19:25437 /20:45740 /21:52303 /22:113788 /23:107280 /24:652826 /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 6947 12766 UNINET, MX 12479 6139 7197 UNI2-AS, ES 39891 3655 4971 ALJAWWALSTC-AS, SA 11492 3512 4651 CABLEONE - CABLE ONE, INC., US 6327 3493 3712 SHAW - Shaw Communications, CA 22773 3052 4782 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2595 14506 AMAZON-02 - Amazon.com, Inc., US 30036 2320 2669 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) ---------------------------------------------- 1:2482 2:1708 3:1002 4:5 5:5110 6:196 7:6 8:1500 9:38 11:172 12:1191 13:654 14:2667 15:459 16:169 17:421 18:918 20:603 21:4 22:188 23:8260 24:2852 25:2 27:2826 28:2 29:19 31:3403 32:36 34:87 35:293 36:4642 37:4464 38:9964 39:1273 40:410 41:4560 42:2235 43:3020 44:447 45:19812 46:4892 47:406 48:99 49:2199 50:2033 51:617 52:1308 54:279 55:1115 56:11 57:320 58:2333 59:1352 60:1175 61:3120 62:3125 63:1756 64:6236 65:2125 66:6028 67:3255 68:1497 69:4217 70:1048 71:614 72:3140 74:2998 75:1488 76:590 77:2893 78:1921 79:1793 80:2330 81:2207 82:4012 83:1440 84:2094 85:3824 86:1094 87:2304 88:1349 89:4698 90:788 91:8419 92:2841 93:3018 94:4325 95:4629 96:1448 97:315 98:943 99:800 100:68 101:1459 102:4476 103:32470 104:5336 105:820 106:924 107:2839 108:1229 109:4227 110:2292 111:4109 112:3160 113:1976 114:2264 115:2328 116:2174 117:3490 118:3001 119:2069 120:2693 121:1556 122:2987 123:2268 124:1640 125:2983 126:125 128:1697 129:971 130:1618 131:2462 132:809 133:463 134:1642 135:606 136:1588 137:1546 138:3164 139:1648 140:1764 141:1677 142:2518 143:2098 144:1701 145:636 146:2205 147:2170 148:2716 149:3060 150:1340 151:2708 152:2313 153:1055 154:9536 155:2316 156:4381 157:2285 158:1509 159:2818 160:3824 161:1951 162:4028 163:2447 164:2037 165:2633 166:1292 167:2258 168:3979 169:884 170:5532 171:1116 172:4565 173:3476 174:885 175:1365 176:3820 177:4779 178:4358 179:2346 180:3028 181:4463 182:4022 183:2838 184:2010 185:21833 186:5750 187:4917 188:4604 189:4506 190:9778 191:1561 192:11477 193:9587 194:7842 195:5796 196:3335 197:3233 198:6272 199:6092 200:8202 201:6391 202:10719 203:10657 204:4767 205:3792 206:4531 207:4013 208:4384 209:5491 210:4776 211:2685 212:4988 213:4116 214:1055 215:46 216:7257 217:3553 218:1694 219:419 220:2200 221:1310 222:928 223:3389 End of report