IPv4 R&E Routing Table Report 21:10 GMT Wed 18 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: 1035355 Prefixes after maximum aggregation (per Origin AS): 397986 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511165 Number of IPv4 prefixes with a valid ROA: 623483 Number of IPv4 prefixes with an invalid ROA: 99 Number of IPv4 prefixes with no ROA: 411773 Total ASes present in the Internet Routing Table: 78081 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66808 Origin ASes announcing only one prefix: 27266 Transit ASes present in the Internet Routing Table: 11273 Transit-only ASes present in the Internet Routing Table: 591 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: 1047 Number of instances of unregistered ASNs: 1077 Number of 32-bit ASNs allocated by the RIRs: 49005 Number of 32-bit ASNs visible in the Routing Table: 40126 Prefixes from 32-bit ASNs in the Routing Table: 224077 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: 3105552640 Equivalent to 185 /8s, 26 /16s and 249 /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: 336656 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281106 Total APNIC prefixes after maximum aggregation: 81895 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 268154 Unique aggregates announced from the APNIC address blocks: 107179 APNIC Region origin ASes present in the Internet Routing Table: 15130 APNIC Prefixes per ASN: 17.72 APNIC Region origin ASes announcing only one prefix: 4639 APNIC Region transit ASes present in the Internet Routing Table: 2046 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: 10687 Number of APNIC addresses announced to Internet: 751672832 Equivalent to 44 /8s, 205 /16s and 158 /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: 304942 Total ARIN prefixes after maximum aggregation: 137216 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 303648 Unique aggregates announced from the ARIN address blocks: 147050 ARIN Region origin ASes present in the Internet Routing Table: 19403 ARIN Prefixes per ASN: 15.65 ARIN Region origin ASes announcing only one prefix: 7074 ARIN Region transit ASes present in the Internet Routing Table: 1983 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: 1349477632 Equivalent to 80 /8s, 111 /16s and 101 /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: 284370 Total RIPE prefixes after maximum aggregation: 140542 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 287029 Unique aggregates announced from the RIPE address blocks: 186957 RIPE Region origin ASes present in the Internet Routing Table: 29264 RIPE Prefixes per ASN: 9.81 RIPE Region origin ASes announcing only one prefix: 12120 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: 13161 Number of RIPE addresses announced to Internet: 730562816 Equivalent to 43 /8s, 139 /16s and 129 /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: 127043 Total LACNIC prefixes after maximum aggregation: 30681 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 122538 Unique aggregates announced from the LACNIC address blocks: 50256 LACNIC Region origin ASes present in the Internet Routing Table: 11366 LACNIC Prefixes per ASN: 10.78 LACNIC Region origin ASes announcing only one prefix: 2697 LACNIC Region transit ASes present in the Internet Routing Table: 2589 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: 170279680 Equivalent to 10 /8s, 38 /16s and 67 /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: 36847 Total AfriNIC prefixes after maximum aggregation: 6979 AfriNIC Deaggregation factor: 5.28 Prefixes being announced from the AfriNIC address blocks: 53583 Unique aggregates announced from the AfriNIC address blocks: 19370 AfriNIC Region origin ASes present in the Internet Routing Table: 2011 AfriNIC Prefixes per ASN: 26.64 AfriNIC Region origin ASes announcing only one prefix: 736 AfriNIC Region transit ASes present in the Internet Routing Table: 392 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: 1376 Number of AfriNIC addresses announced to Internet: 103363584 Equivalent to 6 /8s, 41 /16s and 52 /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 5955 829 517 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4847 548 320 BBIL-AP BHARTI Airtel Ltd., IN 18403 4542 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4031 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 2936 185 556 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 14497 41222 5592 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 3291 4856 484 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3195 8764 841 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 16625 2835 1247 2153 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 7202 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3947 3389 111 AKAMAI-ASN1, NL 9009 3823 354 2243 M247, RO 12389 3150 2320 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2680 194 1963 CDNEXT, GB 34984 2463 366 569 TELLCOM-AS, TR 8452 1697 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 12782 3302 593 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2458 506 343 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 1371 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 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 36914 554 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 14497 41222 5592 AMAZON-02 - Amazon.com, Inc., US 9808 13747 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12782 3302 593 UNINET, MX 12479 7202 1711 149 UNI2-AS, ES 7545 5955 829 517 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 4542 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 12782 12189 UNINET, MX 12479 7202 7053 UNI2-AS, ES 7545 5955 5438 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 9498 4847 4527 BBIL-AP BHARTI Airtel Ltd., IN 18403 4542 4517 FPT-AS-AP FPT Telecom Company, VN 22773 4779 4411 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4031 4002 VIETEL-AS-AP Viettel Group, VN 20940 3947 3836 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 /15:2095 /16:13616 /17:8274 /18:13294 /19:25353 /20:45596 /21:52108 /22:113540 /23:107217 /24:652018 /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 6946 12782 UNINET, MX 12479 6143 7202 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 2607 14497 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) ---------------------------------------------- 1:2478 2:1663 3:1004 4:5 5:5136 6:195 7:6 8:1497 9:37 11:172 12:1190 13:637 14:2667 15:460 16:168 17:422 18:919 20:603 21:4 22:188 23:8255 24:2837 25:2 27:2820 28:1 29:19 31:3399 32:29 34:87 35:294 36:4631 37:4464 38:9955 39:1267 40:409 41:4521 42:2101 43:3020 44:445 45:19880 46:4891 47:408 48:93 49:2182 50:2071 51:611 52:1301 54:278 55:1102 56:11 57:319 58:2336 59:1353 60:1174 61:3122 62:3118 63:1757 64:6241 65:2111 66:6010 67:3260 68:1501 69:4218 70:1047 71:624 72:3122 74:3004 75:1498 76:592 77:2869 78:1888 79:1793 80:2314 81:2170 82:4010 83:1448 84:2057 85:3790 86:1103 87:2290 88:1355 89:4690 90:798 91:8421 92:2833 93:3017 94:4297 95:4639 96:1448 97:314 98:948 99:800 100:68 101:1449 102:4458 103:32600 104:5473 105:813 106:924 107:2850 108:1226 109:4199 110:2289 111:4101 112:3152 113:1976 114:2181 115:2275 116:2173 117:3444 118:2992 119:2062 120:2691 121:1521 122:2985 123:2268 124:1619 125:2979 126:125 128:1699 129:974 130:1609 131:2486 132:802 133:463 134:1640 135:596 136:1602 137:1547 138:3172 139:1651 140:1777 141:1592 142:2543 143:2159 144:1747 145:631 146:2204 147:2161 148:2733 149:3062 150:1340 151:2682 152:2287 153:1023 154:9568 155:2322 156:4632 157:2285 158:1504 159:2777 160:3819 161:1950 162:4024 163:2429 164:2032 165:2631 166:1300 167:2248 168:3983 169:898 170:5537 171:1110 172:4632 173:3458 174:886 175:1355 176:3831 177:4792 178:4327 179:2283 180:2953 181:4462 182:4018 183:2832 184:2017 185:21760 186:5690 187:4917 188:4550 189:4505 190:9750 191:1573 192:11520 193:9586 194:7836 195:5741 196:3319 197:3245 198:6287 199:6102 200:8192 201:6388 202:10715 203:10654 204:4753 205:3781 206:4515 207:4014 208:4382 209:5464 210:4782 211:2684 212:4971 213:4115 214:1059 215:46 216:7256 217:3516 218:1693 219:418 220:2159 221:1315 222:932 223:3329 End of report