IPv4 R&E Routing Table Report 21:10 GMT Tue 20 Jan, 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: 1027279 Prefixes after maximum aggregation (per Origin AS): 395104 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 507199 Number of IPv4 prefixes with a valid ROA: 612919 Number of IPv4 prefixes with an invalid ROA: 108 Number of IPv4 prefixes with no ROA: 414252 Total ASes present in the Internet Routing Table: 77780 Prefixes per ASN: 13.21 Origin-only ASes present in the Internet Routing Table: 66577 Origin ASes announcing only one prefix: 27185 Transit ASes present in the Internet Routing Table: 11203 Transit-only ASes present in the Internet Routing Table: 572 Paths with bogon ASNs present in the IPv4 Routing Table: 20 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: 993 Number of instances of unregistered ASNs: 1035 Number of 32-bit ASNs allocated by the RIRs: 48435 Number of 32-bit ASNs visible in the Routing Table: 39659 Prefixes from 32-bit ASNs in the Routing Table: 220216 Number of bogon 32-bit ASNs visible in the Routing Table: 98 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 476 Number of addresses announced to Internet: 3106321664 Equivalent to 185 /8s, 38 /16s and 181 /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: 334790 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279475 Total APNIC prefixes after maximum aggregation: 81878 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 266044 Unique aggregates announced from the APNIC address blocks: 107042 APNIC Region origin ASes present in the Internet Routing Table: 15004 APNIC Prefixes per ASN: 17.73 APNIC Region origin ASes announcing only one prefix: 4588 APNIC Region transit ASes present in the Internet Routing Table: 2009 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 34 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10569 Number of APNIC addresses announced to Internet: 753606912 Equivalent to 44 /8s, 235 /16s and 33 /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: 301533 Total ARIN prefixes after maximum aggregation: 135224 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 301546 Unique aggregates announced from the ARIN address blocks: 146164 ARIN Region origin ASes present in the Internet Routing Table: 19406 ARIN Prefixes per ASN: 15.54 ARIN Region origin ASes announcing only one prefix: 7074 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: 5450 Number of ARIN addresses announced to Internet: 1344879616 Equivalent to 80 /8s, 41 /16s and 60 /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, 393216-402332 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: 282994 Total RIPE prefixes after maximum aggregation: 139923 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284735 Unique aggregates announced from the RIPE address blocks: 184566 RIPE Region origin ASes present in the Internet Routing Table: 29114 RIPE Prefixes per ASN: 9.78 RIPE Region origin ASes announcing only one prefix: 12091 RIPE Region transit ASes present in the Internet Routing Table: 4057 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: 12921 Number of RIPE addresses announced to Internet: 733773312 Equivalent to 43 /8s, 188 /16s and 126 /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: 125941 Total LACNIC prefixes after maximum aggregation: 30472 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121768 Unique aggregates announced from the LACNIC address blocks: 49722 LACNIC Region origin ASes present in the Internet Routing Table: 11344 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2686 LACNIC Region transit ASes present in the Internet Routing Table: 2562 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: 9342 Number of LACNIC addresses announced to Internet: 170532608 Equivalent to 10 /8s, 42 /16s and 31 /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: 36343 Total AfriNIC prefixes after maximum aggregation: 6934 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 52709 Unique aggregates announced from the AfriNIC address blocks: 19297 AfriNIC Region origin ASes present in the Internet Routing Table: 2013 AfriNIC Prefixes per ASN: 26.18 AfriNIC Region origin ASes announcing only one prefix: 746 AfriNIC Region transit ASes present in the Internet Routing Table: 386 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 42 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1377 Number of AfriNIC addresses announced to Internet: 103243520 Equivalent to 6 /8s, 39 /16s and 95 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & 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 13520 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4688 543 342 BBIL-AP BHARTI Airtel Ltd., IN 18403 4450 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4052 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3730 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3415 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3321 1868 96 VNPT-AS-VN VNPT Corp, VN 24560 2958 864 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2809 176 551 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 14014 38703 5437 AMAZON-02 - Amazon.com, Inc., US 22773 4780 3115 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4622 307 1033 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3697 1321 70 SHAW - Shaw Communications, CA 396982 3325 4868 498 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3153 8767 844 COGENT-174 - Cogent Communications, LLC, 749 3143 54729 2394 DNIC-AS-00749 - United States Department 16625 2949 1274 2172 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2696 222 898 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 7253 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 20940 3946 3393 113 AKAMAI-ASN1, NL 9009 3909 365 2234 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2572 183 1869 CDNEXT, GB 34984 2426 372 578 TELLCOM-AS, TR 8452 1712 1852 14 TE-AS TE-AS, EG 203020 1616 243 788 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 12694 3302 601 UNINET, MX 10620 3440 457 1107 Telmex Colombia S.A., CO 13999 2486 508 351 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 11664 1378 278 31 Techtel LMDS Comunicaciones Interactivas 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1256 371 22 INTEGRATEL PERU S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1016 2486 56 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 1983 646 33 RAYA-AS, EG 36992 1841 1532 339 ETISALAT-MISR, EG 24863 1279 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1144 522 45 Vodafone-, EG 37069 1099 1084 13 MOBINIL, EG 29571 1070 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 328608 570 53 164 Africa-on-Cloud-AS, ZA 36914 565 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 14014 38703 5437 AMAZON-02 - Amazon.com, Inc., US 9808 13520 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12694 3302 601 UNINET, MX 12479 7253 1711 149 UNI2-AS, ES 7545 6028 833 575 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4780 3115 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 9498 4688 543 342 BBIL-AP BHARTI Airtel Ltd., IN 11492 4622 307 1033 CABLEONE - CABLE ONE, INC., US 18403 4450 347 24 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 13520 13400 CHINAMOBILE-CN China Mobile Communications Grou 8151 12694 12093 UNINET, MX 12479 7253 7104 UNI2-AS, ES 7545 6028 5453 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4450 4426 FPT-AS-AP FPT Telecom Company, VN 22773 4780 4415 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 9498 4688 4346 BBIL-AP BHARTI Airtel Ltd., IN 7552 4052 4023 VIETEL-AS-AP Viettel Group, VN 20940 3946 3833 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: 3257 GTT-BACKBONE GTT, US 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 /11:93 /12:302 /13:582 /14:1204 /15:2095 /16:13706 /17:8251 /18:13540 /19:24877 /20:44869 /21:52227 /22:113533 /23:106372 /24:645557 /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 6872 12694 UNINET, MX 12479 6183 7253 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3487 4622 CABLEONE - CABLE ONE, INC., US 6327 3479 3697 SHAW - Shaw Communications, CA 22773 3051 4780 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2482 14014 AMAZON-02 - Amazon.com, Inc., US 30036 2307 2649 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2220 3440 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) ---------------------------------------------- 1:2496 2:1543 3:978 4:9 5:4983 6:185 7:6 8:1502 9:14 11:172 12:1226 13:618 14:2639 15:414 16:179 17:391 18:915 20:596 21:4 22:188 23:8188 24:2669 25:2 27:2832 29:19 31:3416 32:31 34:81 35:289 36:4633 37:4529 38:9877 39:1248 40:438 41:4472 42:1991 43:2938 44:415 45:19613 46:4957 47:401 48:20 49:2191 50:2069 51:598 52:1255 54:235 55:1118 56:11 57:311 58:2317 59:1345 60:1171 61:3096 62:3089 63:1770 64:6199 65:2134 66:6004 67:3266 68:1482 69:4231 70:1023 71:626 72:3075 74:2970 75:1517 76:605 77:2729 78:1916 79:1805 80:2297 81:2117 82:4037 83:1480 84:2027 85:3667 86:1096 87:2239 88:1342 89:4626 90:830 91:8413 92:2857 93:3018 94:4271 95:4524 96:1471 97:313 98:956 99:780 100:69 101:1549 102:4359 103:32325 104:5448 105:810 106:906 107:2822 108:1223 109:4205 110:2305 111:4052 112:3078 113:1936 114:2168 115:2308 116:2161 117:3290 118:2984 119:2087 120:2592 121:1522 122:2965 123:2309 124:1605 125:2950 126:125 128:1614 129:955 130:1563 131:2291 132:772 133:461 134:1625 135:534 136:1624 137:1478 138:2988 139:1624 140:1767 141:1562 142:2473 143:2137 144:1565 145:631 146:2204 147:2285 148:2814 149:2919 150:1317 151:2603 152:2278 153:914 154:9529 155:2288 156:4404 157:2266 158:1496 159:2747 160:3736 161:2003 162:4020 163:2337 164:1970 165:2647 166:1302 167:2202 168:3924 169:867 170:5466 171:1117 172:4582 173:3422 174:891 175:1343 176:3769 177:4713 178:4280 179:2283 180:2989 181:4366 182:3895 183:2750 184:2040 185:21702 186:5529 187:4829 188:4598 189:4499 190:9676 191:1515 192:11470 193:9487 194:7849 195:5676 196:3257 197:3176 198:6250 199:6123 200:8194 201:6389 202:10620 203:10651 204:4738 205:3761 206:4413 207:3958 208:4390 209:5498 210:4788 211:2684 212:4958 213:4052 214:1047 215:54 216:7153 217:3459 218:1623 219:419 220:2186 221:1311 222:876 223:3268 End of report