IPv4 R&E Routing Table Report 21:10 GMT Tue 17 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: 1036120 Prefixes after maximum aggregation (per Origin AS): 398678 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511933 Number of IPv4 prefixes with a valid ROA: 624482 Number of IPv4 prefixes with an invalid ROA: 99 Number of IPv4 prefixes with no ROA: 411539 Total ASes present in the Internet Routing Table: 78117 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66864 Origin ASes announcing only one prefix: 27272 Transit ASes present in the Internet Routing Table: 11253 Transit-only ASes present in the Internet Routing Table: 590 Paths with bogon ASNs present in the IPv4 Routing Table: 9 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: 1051 Number of instances of unregistered ASNs: 1081 Number of 32-bit ASNs allocated by the RIRs: 48986 Number of 32-bit ASNs visible in the Routing Table: 40147 Prefixes from 32-bit ASNs in the Routing Table: 224107 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: 403 Number of addresses announced to Internet: 3107934976 Equivalent to 185 /8s, 63 /16s and 83 /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: 337224 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 280895 Total APNIC prefixes after maximum aggregation: 81876 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 268121 Unique aggregates announced from the APNIC address blocks: 107344 APNIC Region origin ASes present in the Internet Routing Table: 15133 APNIC Prefixes per ASN: 17.72 APNIC Region origin ASes announcing only one prefix: 4633 APNIC Region transit ASes present in the Internet Routing Table: 2037 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 52 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10690 Number of APNIC addresses announced to Internet: 751665152 Equivalent to 44 /8s, 205 /16s and 128 /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: 304830 Total ARIN prefixes after maximum aggregation: 137469 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 303585 Unique aggregates announced from the ARIN address blocks: 147089 ARIN Region origin ASes present in the Internet Routing Table: 19398 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: 1987 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: 5518 Number of ARIN addresses announced to Internet: 1349124352 Equivalent to 80 /8s, 106 /16s and 1 /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: 285521 Total RIPE prefixes after maximum aggregation: 141015 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 288127 Unique aggregates announced from the RIPE address blocks: 187565 RIPE Region origin ASes present in the Internet Routing Table: 29301 RIPE Prefixes per ASN: 9.83 RIPE Region origin ASes announcing only one prefix: 12143 RIPE Region transit ASes present in the Internet Routing Table: 4051 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: 733416960 Equivalent to 43 /8s, 183 /16s and 14 /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: 126983 Total LACNIC prefixes after maximum aggregation: 30685 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 122485 Unique aggregates announced from the LACNIC address blocks: 50244 LACNIC Region origin ASes present in the Internet Routing Table: 11362 LACNIC Prefixes per ASN: 10.78 LACNIC Region origin ASes announcing only one prefix: 2692 LACNIC Region transit ASes present in the Internet Routing Table: 2581 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: 9377 Number of LACNIC addresses announced to Internet: 170368000 Equivalent to 10 /8s, 39 /16s and 156 /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: 36840 Total AfriNIC prefixes after maximum aggregation: 6957 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 53398 Unique aggregates announced from the AfriNIC address blocks: 19337 AfriNIC Region origin ASes present in the Internet Routing Table: 2014 AfriNIC Prefixes per ASN: 26.51 AfriNIC Region origin ASes announcing only one prefix: 734 AfriNIC Region transit ASes present in the Internet Routing Table: 393 Average AfriNIC Region AS path length visible: 5.1 Max AfriNIC Region AS path length visible: 62 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1379 Number of AfriNIC addresses announced to Internet: 103166464 Equivalent to 6 /8s, 38 /16s and 50 /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 13747 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5956 829 518 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4847 548 320 BBIL-AP BHARTI Airtel Ltd., IN 18403 4579 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4033 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3673 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 3007 865 512 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2817 177 542 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 14467 41222 5577 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 3289 4856 483 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3197 8764 839 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 16625 2838 1248 2155 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2697 221 901 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 7203 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3947 3393 110 AKAMAI-ASN1, NL 9009 3827 355 2247 M247, RO 12389 3150 2320 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2679 194 1962 CDNEXT, GB 34984 2463 366 569 TELLCOM-AS, TR 8452 1698 1852 14 TE-AS TE-AS, EG 203020 1629 247 805 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 12809 3302 596 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2455 506 346 Mega Cable, S.A. de C.V., MX 11830 1956 369 65 Instituto Costarricense de Electricidad y 11664 1454 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1371 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 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 580 154 212 NTT-DATA-Inc, ZA 36914 556 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 14467 41222 5577 AMAZON-02 - Amazon.com, Inc., US 9808 13747 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12809 3302 596 UNINET, MX 12479 7203 1711 149 UNI2-AS, ES 7545 5956 829 518 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4847 548 320 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 4579 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 13747 13627 CHINAMOBILE-CN China Mobile Communications Grou 8151 12809 12213 UNINET, MX 12479 7203 7054 UNI2-AS, ES 7545 5956 5438 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4579 4554 FPT-AS-AP FPT Telecom Company, VN 9498 4847 4527 BBIL-AP BHARTI Airtel Ltd., IN 22773 4779 4411 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4033 4004 VIETEL-AS-AP Viettel Group, VN 20940 3947 3837 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 200051 UNALLOCATED 2.27.62.0/24 30823 AUROLOGIC aurologic Gmb 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 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 /12:298 /13:584 /14:1195 /15:2098 /16:13613 /17:8293 /18:13291 /19:25398 /20:45700 /21:52321 /22:113887 /23:107411 /24:651865 /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 6972 12809 UNINET, MX 12479 6144 7203 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 3047 4779 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2590 14467 AMAZON-02 - Amazon.com, Inc., US 30036 2317 2665 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) ---------------------------------------------- 1:2486 2:1649 3:996 4:5 5:5129 6:195 7:6 8:1498 9:29 11:172 12:1192 13:628 14:2667 15:459 16:168 17:421 18:918 20:603 21:4 22:188 23:8256 24:2834 25:2 27:2820 28:1 29:19 31:3404 32:30 34:87 35:292 36:4621 37:4461 38:9944 39:1269 40:410 41:4535 42:2105 43:3003 44:447 45:19867 46:4914 47:408 48:93 49:2195 50:2069 51:603 52:1309 54:279 55:1108 56:11 57:319 58:2334 59:1352 60:1174 61:3107 62:3115 63:1756 64:6250 65:2110 66:6011 67:3260 68:1501 69:4216 70:1047 71:622 72:3120 74:2972 75:1480 76:592 77:2870 78:1913 79:1793 80:2335 81:2169 82:4005 83:1446 84:2050 85:3816 86:1103 87:2288 88:1355 89:4691 90:798 91:8431 92:2835 93:3017 94:4302 95:4633 96:1447 97:313 98:945 99:800 100:68 101:1447 102:4471 103:32498 104:5473 105:813 106:924 107:2855 108:1226 109:4214 110:2288 111:4088 112:3153 113:1979 114:2176 115:2322 116:2172 117:3442 118:3001 119:2061 120:2693 121:1522 122:2984 123:2267 124:1617 125:2979 126:125 128:1704 129:972 130:1610 131:2488 132:803 133:463 134:1642 135:595 136:1604 137:1546 138:3171 139:1659 140:1776 141:1591 142:2543 143:2166 144:1742 145:631 146:2202 147:2165 148:2734 149:3061 150:1333 151:2700 152:2272 153:1026 154:9473 155:2315 156:4578 157:2283 158:1502 159:2776 160:3834 161:1952 162:4023 163:2421 164:2035 165:2575 166:1301 167:2248 168:3979 169:897 170:5535 171:1092 172:4626 173:3462 174:884 175:1354 176:3833 177:4765 178:4333 179:2284 180:3009 181:4461 182:4018 183:2834 184:2016 185:21814 186:5691 187:4912 188:4555 189:4508 190:9743 191:1574 192:11519 193:9593 194:7840 195:5737 196:3317 197:3243 198:6288 199:6106 200:8196 201:6387 202:10709 203:10659 204:4758 205:3786 206:4516 207:4018 208:4371 209:5456 210:4783 211:2684 212:4983 213:4108 214:1050 215:46 216:7274 217:3547 218:1682 219:418 220:2158 221:1315 222:935 223:3329 End of report