IPv4 R&E Routing Table Report 21:10 GMT Sat 21 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: 1037484 Prefixes after maximum aggregation (per Origin AS): 398997 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 512098 Number of IPv4 prefixes with a valid ROA: 625525 Number of IPv4 prefixes with an invalid ROA: 99 Number of IPv4 prefixes with no ROA: 411860 Total ASes present in the Internet Routing Table: 78164 Prefixes per ASN: 13.27 Origin-only ASes present in the Internet Routing Table: 66890 Origin ASes announcing only one prefix: 27295 Transit ASes present in the Internet Routing Table: 11274 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: 1044 Number of instances of unregistered ASNs: 1074 Number of 32-bit ASNs allocated by the RIRs: 49047 Number of 32-bit ASNs visible in the Routing Table: 40173 Prefixes from 32-bit ASNs in the Routing Table: 224588 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: 397 Number of addresses announced to Internet: 3107587072 Equivalent to 185 /8s, 58 /16s and 4 /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: 337874 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281477 Total APNIC prefixes after maximum aggregation: 82123 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 268609 Unique aggregates announced from the APNIC address blocks: 107144 APNIC Region origin ASes present in the Internet Routing Table: 15138 APNIC Prefixes per ASN: 17.74 APNIC Region origin ASes announcing only one prefix: 4639 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: 10697 Number of APNIC addresses announced to Internet: 751665664 Equivalent to 44 /8s, 205 /16s and 130 /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: 305145 Total ARIN prefixes after maximum aggregation: 137296 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 303803 Unique aggregates announced from the ARIN address blocks: 147115 ARIN Region origin ASes present in the Internet Routing Table: 19420 ARIN Prefixes per ASN: 15.64 ARIN Region origin ASes announcing only one prefix: 7086 ARIN Region transit ASes present in the Internet Routing Table: 1982 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: 5534 Number of ARIN addresses announced to Internet: 1349303040 Equivalent to 80 /8s, 108 /16s and 187 /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: 286112 Total RIPE prefixes after maximum aggregation: 141276 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 288873 Unique aggregates announced from the RIPE address blocks: 187840 RIPE Region origin ASes present in the Internet Routing Table: 29327 RIPE Prefixes per ASN: 9.85 RIPE Region origin ASes announcing only one prefix: 12146 RIPE Region transit ASes present in the Internet Routing Table: 4056 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: 13188 Number of RIPE addresses announced to Internet: 732538112 Equivalent to 43 /8s, 169 /16s and 165 /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: 126844 Total LACNIC prefixes after maximum aggregation: 30670 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 122520 Unique aggregates announced from the LACNIC address blocks: 50289 LACNIC Region origin ASes present in the Internet Routing Table: 11369 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: 2592 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: 9384 Number of LACNIC addresses announced to Internet: 170382592 Equivalent to 10 /8s, 39 /16s and 213 /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: 36862 Total AfriNIC prefixes after maximum aggregation: 6955 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 53281 Unique aggregates announced from the AfriNIC address blocks: 19362 AfriNIC Region origin ASes present in the Internet Routing Table: 2006 AfriNIC Prefixes per ASN: 26.56 AfriNIC Region origin ASes announcing only one prefix: 726 AfriNIC Region transit ASes present in the Internet Routing Table: 389 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: 1370 Number of AfriNIC addresses announced to Internet: 103440128 Equivalent to 6 /8s, 42 /16s and 95 /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 13760 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5941 829 515 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4850 548 322 BBIL-AP BHARTI Airtel Ltd., IN 18403 4551 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4032 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 3006 862 511 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2814 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 14519 41222 5586 AMAZON-02 - Amazon.com, Inc., US 22773 4768 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 3710 1321 75 SHAW - Shaw Communications, CA 396982 3292 4856 486 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3185 8764 840 COGENT-174 - Cogent Communications, LLC, 749 3141 54728 2392 DNIC-AS-00749 - United States Department 16625 2836 1248 2152 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2700 221 895 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 7205 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3945 3389 111 AKAMAI-ASN1, NL 9009 3829 355 2250 M247, RO 12389 3151 2320 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2678 193 1961 CDNEXT, GB 34984 2462 366 570 TELLCOM-AS, TR 8452 1698 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 12825 3302 595 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2460 506 344 Mega Cable, S.A. de C.V., MX 11830 1957 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 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 1286 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1229 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 15399 551 57 61 WANANCHI-, KE 36914 543 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 14519 41222 5586 AMAZON-02 - Amazon.com, Inc., US 9808 13760 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12825 3302 595 UNINET, MX 12479 7205 1711 149 UNI2-AS, ES 7545 5941 829 515 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4850 548 322 BBIL-AP BHARTI Airtel Ltd., IN 22773 4768 3117 368 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4646 308 1021 CABLEONE - CABLE ONE, INC., US 18403 4551 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 13760 13640 CHINAMOBILE-CN China Mobile Communications Grou 8151 12825 12230 UNINET, MX 12479 7205 7056 UNI2-AS, ES 7545 5941 5426 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 9498 4850 4528 BBIL-AP BHARTI Airtel Ltd., IN 18403 4551 4526 FPT-AS-AP FPT Telecom Company, VN 22773 4768 4400 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4032 4003 VIETEL-AS-AP Viettel Group, VN 20940 3945 3834 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 /14:1198 /15:2103 /16:13600 /17:8295 /18:13319 /19:25418 /20:45775 /21:52360 /22:113903 /23:107471 /24:652995 /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 6985 12825 UNINET, MX 12479 6146 7205 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3507 4646 CABLEONE - CABLE ONE, INC., US 6327 3491 3710 SHAW - Shaw Communications, CA 22773 3036 4768 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2605 14519 AMAZON-02 - Amazon.com, Inc., US 30036 2318 2667 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2232 3452 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 2:1716 3:1005 4:5 5:5151 6:197 7:6 8:1502 9:38 11:172 12:1194 13:659 14:2669 15:459 16:169 17:422 18:919 20:603 21:4 22:188 23:8269 24:2841 25:2 27:2823 28:1 29:19 31:3403 32:36 34:87 35:291 36:4636 37:4475 38:9962 39:1273 40:412 41:4540 42:2205 43:3012 44:445 45:19865 46:4909 47:407 48:99 49:2187 50:2072 51:614 52:1303 54:279 55:1115 56:11 57:319 58:2333 59:1352 60:1174 61:3121 62:3123 63:1754 64:6261 65:2127 66:6022 67:3260 68:1497 69:4215 70:1049 71:623 72:3141 74:3009 75:1495 76:592 77:2883 78:1920 79:1797 80:2342 81:2199 82:4020 83:1448 84:2092 85:3820 86:1103 87:2310 88:1357 89:4703 90:797 91:8429 92:2846 93:3015 94:4312 95:4645 96:1442 97:314 98:947 99:803 100:68 101:1459 102:4467 103:32477 104:5473 105:813 106:925 107:2852 108:1225 109:4195 110:2292 111:4103 112:3154 113:1971 114:2260 115:2326 116:2173 117:3489 118:2996 119:2068 120:2689 121:1555 122:2985 123:2271 124:1643 125:2981 126:125 128:1697 129:970 130:1618 131:2475 132:807 133:463 134:1642 135:597 136:1586 137:1542 138:3173 139:1643 140:1780 141:1638 142:2549 143:2140 144:1750 145:626 146:2202 147:2153 148:2732 149:3057 150:1348 151:2706 152:2313 153:1024 154:9477 155:2315 156:4386 157:2284 158:1503 159:2800 160:3823 161:1958 162:4033 163:2445 164:2034 165:2630 166:1303 167:2245 168:3990 169:894 170:5519 171:1109 172:4628 173:3468 174:885 175:1365 176:3836 177:4785 178:4324 179:2291 180:3028 181:4463 182:4023 183:2831 184:2013 185:21848 186:5720 187:4937 188:4555 189:4501 190:9767 191:1561 192:11513 193:9608 194:7867 195:5738 196:3322 197:3233 198:6290 199:6107 200:8210 201:6401 202:10706 203:10653 204:4747 205:3769 206:4523 207:4006 208:4389 209:5470 210:4782 211:2685 212:4991 213:4130 214:1051 215:46 216:7258 217:3552 218:1693 219:418 220:2199 221:1311 222:934 223:3386 End of report