IPv4 R&E Routing Table Report 21:10 GMT Thu 18 Dec, 2025 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: 1022023 Prefixes after maximum aggregation (per Origin AS): 394044 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505462 Number of IPv4 prefixes with a valid ROA: 606832 Number of IPv4 prefixes with an invalid ROA: 121 Number of IPv4 prefixes with no ROA: 415070 Total ASes present in the Internet Routing Table: 77692 Prefixes per ASN: 13.15 Origin-only ASes present in the Internet Routing Table: 66470 Origin ASes announcing only one prefix: 27157 Transit ASes present in the Internet Routing Table: 11222 Transit-only ASes present in the Internet Routing Table: 574 Paths with bogon ASNs present in the IPv4 Routing Table: 16 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: 955 Number of instances of unregistered ASNs: 995 Number of 32-bit ASNs allocated by the RIRs: 48229 Number of 32-bit ASNs visible in the Routing Table: 39524 Prefixes from 32-bit ASNs in the Routing Table: 219021 Number of bogon 32-bit ASNs visible in the Routing Table: 90 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 730 Number of addresses announced to Internet: 3105467136 Equivalent to 185 /8s, 25 /16s and 171 /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: 333739 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 276320 Total APNIC prefixes after maximum aggregation: 80955 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262986 Unique aggregates announced from the APNIC address blocks: 106434 APNIC Region origin ASes present in the Internet Routing Table: 14941 APNIC Prefixes per ASN: 17.60 APNIC Region origin ASes announcing only one prefix: 4571 APNIC Region transit ASes present in the Internet Routing Table: 2006 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10506 Number of APNIC addresses announced to Internet: 753001984 Equivalent to 44 /8s, 225 /16s and 230 /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: 299835 Total ARIN prefixes after maximum aggregation: 134842 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300334 Unique aggregates announced from the ARIN address blocks: 145606 ARIN Region origin ASes present in the Internet Routing Table: 19393 ARIN Prefixes per ASN: 15.49 ARIN Region origin ASes announcing only one prefix: 7077 ARIN Region transit ASes present in the Internet Routing Table: 1992 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: 5431 Number of ARIN addresses announced to Internet: 1343043328 Equivalent to 80 /8s, 13 /16s and 55 /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: 282991 Total RIPE prefixes after maximum aggregation: 140046 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283743 Unique aggregates announced from the RIPE address blocks: 183961 RIPE Region origin ASes present in the Internet Routing Table: 29140 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12096 RIPE Region transit ASes present in the Internet Routing Table: 4061 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12895 Number of RIPE addresses announced to Internet: 735207680 Equivalent to 43 /8s, 210 /16s and 97 /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: 125829 Total LACNIC prefixes after maximum aggregation: 30568 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121621 Unique aggregates announced from the LACNIC address blocks: 49780 LACNIC Region origin ASes present in the Internet Routing Table: 11325 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2675 LACNIC Region transit ASes present in the Internet Routing Table: 2565 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: 9329 Number of LACNIC addresses announced to Internet: 170513408 Equivalent to 10 /8s, 41 /16s and 212 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 36093 Total AfriNIC prefixes after maximum aggregation: 6984 AfriNIC Deaggregation factor: 5.17 Prefixes being announced from the AfriNIC address blocks: 52608 Unique aggregates announced from the AfriNIC address blocks: 19086 AfriNIC Region origin ASes present in the Internet Routing Table: 1999 AfriNIC Prefixes per ASN: 26.32 AfriNIC Region origin ASes announcing only one prefix: 738 AfriNIC Region transit ASes present in the Internet Routing Table: 389 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 64 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1363 Number of AfriNIC addresses announced to Internet: 103341824 Equivalent to 6 /8s, 40 /16s and 223 /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 13330 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6039 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4616 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4442 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4025 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3373 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3322 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2952 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2901 182 624 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 14037 38461 5458 AMAZON-02, US 22773 4778 3115 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 749 3142 54729 2393 DNIC-AS-00749, US 16625 2979 1279 2178 AKAMAI-AS, US 36352 2815 229 913 AS-COLOCROSSING, US 174 2676 8767 854 COGENT-174, 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 7294 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 3954 3394 123 AKAMAI-ASN1, NL 9009 3943 368 2252 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2560 182 1859 CDNEXT, GB 34984 2420 363 574 TELLCOM-AS, TR 8452 1689 1852 14 TE-AS TE-AS, EG 203020 1617 242 783 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 12686 3285 586 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2497 508 354 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1369 2429 273 Claro NXT Telecomunicacoes Ltda, BR 11664 1367 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1025 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 1927 368 14 RAYA-AS, EG 36992 1824 1531 424 ETISALAT-MISR, EG 24863 1261 389 16 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1083 1084 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1046 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 549 82 3 KENET-AS, KE 15399 541 56 54 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 14037 38461 5458 AMAZON-02, US 9808 13330 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12686 3285 586 UNINET, MX 12479 7294 1711 149 UNI2-AS, ES 7545 6039 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4778 3115 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 9498 4616 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4442 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 13330 13210 CHINAMOBILE-CN China Mobile Communications Grou 8151 12686 12100 UNINET, MX 12479 7294 7145 UNI2-AS, ES 7545 6039 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4442 4418 FPT-AS-AP FPT Telecom Company, VN 22773 4778 4411 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4616 4277 BBIL-AP BHARTI Airtel Ltd., IN 7552 4025 3997 VIETEL-AS-AP Viettel Group, VN 20940 3954 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, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 7018 ATT-INTERNET4, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US 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, 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 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, 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 /10:41 /11:93 /12:299 /13:582 /14:1205 /15:2100 /16:13683 /17:8226 /18:13499 /19:24817 /20:44792 /21:52155 /22:113163 /23:105798 /24:641539 /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 6882 12686 UNINET, MX 12479 6225 7294 UNI2-AS, ES 11492 3532 4687 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3049 4778 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2455 14037 AMAZON-02, US 30036 2319 2662 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 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) ---------------------------------------------- 1:2444 2:1555 3:974 4:10 5:4974 6:187 7:6 8:1501 9:10 11:172 12:1229 13:605 14:2608 15:416 16:290 17:387 18:913 20:587 21:4 22:188 23:8143 24:2609 25:2 27:2827 29:19 31:3379 32:31 33:1 34:81 35:287 36:4613 37:4524 38:9965 39:1207 40:445 41:4496 42:1970 43:2864 44:416 45:19544 46:5104 47:393 49:2157 50:2063 51:596 52:1313 54:228 55:1118 56:11 57:305 58:2295 59:1326 60:1170 61:3056 62:3107 63:1743 64:5995 65:2123 66:5923 67:3240 68:1503 69:4204 70:1021 71:627 72:3059 74:2936 75:1512 76:598 77:2750 78:1924 79:1799 80:2299 81:2084 82:3887 83:1477 84:2022 85:3637 86:1100 87:2201 88:1356 89:4618 90:835 91:8435 92:2843 93:3021 94:4235 95:4570 96:1451 97:312 98:950 99:781 100:68 101:1316 102:4318 103:32213 104:5497 105:774 106:918 107:2814 108:1212 109:4267 110:2302 111:3976 112:2811 113:1909 114:2093 115:2317 116:2160 117:3149 118:3007 119:2064 120:2412 121:1513 122:2947 123:2295 124:1599 125:2919 126:125 128:1613 129:958 130:1554 131:2273 132:766 133:462 134:1637 135:538 136:1505 137:1419 138:3006 139:1606 140:1769 141:1563 142:2430 143:2122 144:1360 145:625 146:2191 147:2140 148:2779 149:2936 150:1314 151:2588 152:2253 153:868 154:9422 155:2277 156:4497 157:2245 158:1477 159:2729 160:3759 161:1997 162:3989 163:2328 164:1965 165:2626 166:1300 167:2190 168:3928 169:823 170:5436 171:1115 172:4544 173:3427 174:901 175:1341 176:3766 177:4726 178:4307 179:2279 180:2828 181:4341 182:3850 183:2663 184:2042 185:21722 186:5499 187:4768 188:4465 189:4484 190:9679 191:1536 192:11450 193:9510 194:7861 195:5630 196:3300 197:3180 198:6221 199:6109 200:8199 201:6399 202:10493 203:10614 204:4644 205:3751 206:4415 207:3955 208:4357 209:5518 210:4778 211:2682 212:4907 213:4039 214:1060 215:54 216:7122 217:3461 218:1605 219:408 220:2190 221:1293 222:776 223:3221 End of report