IPv4 R&E Routing Table Report 21:10 GMT Tue 16 Sep, 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: 1001273 Prefixes after maximum aggregation (per Origin AS): 388530 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 494652 Number of IPv4 prefixes with a valid ROA: 571087 Number of IPv4 prefixes with an invalid ROA: 153 Number of IPv4 prefixes with no ROA: 430018 Total ASes present in the Internet Routing Table: 77297 Prefixes per ASN: 12.95 Origin-only ASes present in the Internet Routing Table: 66205 Origin ASes announcing only one prefix: 27047 Transit ASes present in the Internet Routing Table: 11092 Transit-only ASes present in the Internet Routing Table: 555 Paths with bogon ASNs present in the IPv4 Routing Table: 5 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 52 Max AS path prepend of ASN ( 59958) 48 Prefixes from unregistered ASNs in the Routing Table: 1059 Number of instances of unregistered ASNs: 1088 Number of 32-bit ASNs allocated by the RIRs: 47428 Number of 32-bit ASNs visible in the Routing Table: 38953 Prefixes from 32-bit ASNs in the Routing Table: 210057 Number of bogon 32-bit ASNs visible in the Routing Table: 68 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 445 Number of addresses announced to Internet: 3108433664 Equivalent to 185 /8s, 70 /16s and 239 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 326193 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 267044 Total APNIC prefixes after maximum aggregation: 79216 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 257208 Unique aggregates announced from the APNIC address blocks: 105572 APNIC Region origin ASes present in the Internet Routing Table: 14793 APNIC Prefixes per ASN: 17.39 APNIC Region origin ASes announcing only one prefix: 4511 APNIC Region transit ASes present in the Internet Routing Table: 1969 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10344 Number of APNIC addresses announced to Internet: 750246656 Equivalent to 44 /8s, 183 /16s and 219 /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: 294321 Total ARIN prefixes after maximum aggregation: 133645 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 295835 Unique aggregates announced from the ARIN address blocks: 142757 ARIN Region origin ASes present in the Internet Routing Table: 19306 ARIN Prefixes per ASN: 15.32 ARIN Region origin ASes announcing only one prefix: 7071 ARIN Region transit ASes present in the Internet Routing Table: 1986 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 41 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5335 Number of ARIN addresses announced to Internet: 1350386688 Equivalent to 80 /8s, 125 /16s and 68 /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: 279116 Total RIPE prefixes after maximum aggregation: 137945 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278350 Unique aggregates announced from the RIPE address blocks: 179939 RIPE Region origin ASes present in the Internet Routing Table: 29050 RIPE Prefixes per ASN: 9.58 RIPE Region origin ASes announcing only one prefix: 12094 RIPE Region transit ASes present in the Internet Routing Table: 4019 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 52 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12700 Number of RIPE addresses announced to Internet: 732477184 Equivalent to 43 /8s, 168 /16s and 183 /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: 124782 Total LACNIC prefixes after maximum aggregation: 30200 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121024 Unique aggregates announced from the LACNIC address blocks: 49487 LACNIC Region origin ASes present in the Internet Routing Table: 11282 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2656 LACNIC Region transit ASes present in the Internet Routing Table: 2526 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9248 Number of LACNIC addresses announced to Internet: 170724096 Equivalent to 10 /8s, 45 /16s and 11 /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: 34951 Total AfriNIC prefixes after maximum aggregation: 6823 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 48410 Unique aggregates announced from the AfriNIC address blocks: 16503 AfriNIC Region origin ASes present in the Internet Routing Table: 1963 AfriNIC Prefixes per ASN: 24.66 AfriNIC Region origin ASes announcing only one prefix: 715 AfriNIC Region transit ASes present in the Internet Routing Table: 385 Average AfriNIC Region AS path length visible: 5.1 Max AfriNIC Region AS path length visible: 37 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1326 Number of AfriNIC addresses announced to Internet: 104354304 Equivalent to 6 /8s, 56 /16s and 82 /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 13378 8729 115 CHINAMOBILE-CN China Mobile Communication 7545 6158 837 603 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4457 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3936 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3706 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3294 1868 99 VNPT-AS-VN VNPT Corp, VN 56046 3029 811 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2919 863 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2171 427 182 TATACOMM-AS TATA Communications formerly 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 14407 40915 5402 AMAZON-02, US 11492 4735 319 809 CABLEONE, US 22773 3944 3061 315 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3667 1320 81 SHAW, CA 174 3272 8765 818 COGENT-174, US 396982 3241 4002 448 GOOGLE-CLOUD-PLATFORM, US 749 3221 54766 2472 DNIC-AS-00749, US 16625 3044 1298 2206 AKAMAI-AS, US 4155 3002 233 1734 USDA-1, 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 7462 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4034 3395 127 AKAMAI-ASN1, NL 9009 3889 364 2192 M247, RO 12389 3120 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2416 172 1749 CDNEXT, GB 34984 2415 363 574 TELLCOM-AS, TR 203020 1947 229 908 HOSTROYALE, IN 8452 1621 1852 14 TE-AS TE-AS, EG 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 12373 3280 573 UNINET, MX 10620 3493 473 1047 Telmex Colombia S.A., CO 13999 2543 511 348 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1367 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1226 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1182 371 22 Telefonica del Peru S.A.A., PE 22884 1064 71 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1009 2487 55 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 1821 652 28 RAYA-AS, EG 36992 1507 1498 383 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 24863 1246 389 20 LINKdotNET-AS, EG 29571 1241 102 51 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 1078 523 46 Vodafone-, EG 20011 576 154 212 NTT-DATA-Inc, ZA 36914 568 82 3 KENET-AS, KE 15399 547 57 59 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 14407 40915 5402 AMAZON-02, US 9808 13378 8729 115 CHINAMOBILE-CN China Mobile Communication 8151 12373 3280 573 UNINET, MX 12479 7462 1711 149 UNI2-AS, ES 7545 6158 837 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4735 319 809 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4457 347 25 FPT-AS-AP FPT Telecom Company, VN 20940 4034 3395 127 AKAMAI-ASN1, NL 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 13378 13263 CHINAMOBILE-CN China Mobile Communications Grou 8151 12373 11800 UNINET, MX 12479 7462 7313 UNI2-AS, ES 7545 6158 5555 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4457 4432 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4735 3926 CABLEONE, US 7552 3936 3909 VIETEL-AS-AP Viettel Group, VN 20940 4034 3907 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 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US 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 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 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 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /11:92 /12:298 /13:580 /14:1209 /15:2149 /16:13769 /17:8214 /18:13459 /19:24594 /20:44277 /21:51998 /22:112513 /23:103643 /24:624406 /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 6572 12373 UNINET, MX 12479 6426 7462 UNI2-AS, ES 11492 3550 4735 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3465 3667 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2507 3944 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2449 14407 AMAZON-02, US 30036 2302 2644 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3493 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) ---------------------------------------------- 1:2419 2:1550 3:932 4:10 5:4819 6:157 7:6 8:1542 9:4 11:172 12:1249 13:564 14:2618 15:398 16:303 17:386 18:904 20:571 21:4 22:188 23:7896 24:2708 25:2 27:2814 29:19 31:3353 32:30 33:1 34:81 35:266 36:4352 37:4545 38:9443 39:1064 40:281 41:4328 42:1968 43:2700 44:377 45:18892 46:5121 47:341 49:2010 50:2049 51:591 52:1608 54:371 55:1085 56:11 57:287 58:2249 59:1289 60:1183 61:2879 62:3054 63:1773 64:5621 65:2116 66:4874 67:3088 68:1082 69:3925 70:1030 71:637 72:2883 74:2838 75:1506 76:600 77:2784 78:1923 79:1739 80:2245 81:2092 82:3327 83:1459 84:1974 85:3501 86:1096 87:2130 88:1355 89:4493 90:795 91:8416 92:2787 93:2984 94:4153 95:4461 96:1487 97:312 98:950 99:761 100:71 101:1217 102:4108 103:32277 104:5321 105:763 106:878 107:2653 108:1220 109:4201 110:2239 111:3713 112:2548 113:1833 114:1990 115:2278 116:2074 117:2843 118:3060 119:1927 120:2224 121:1354 122:2792 123:2254 124:1669 125:2876 126:91 128:1601 129:964 130:1297 131:2144 132:792 133:461 134:1608 135:365 136:1487 137:1323 138:2811 139:1601 140:1626 141:1540 142:1914 143:2035 144:1255 145:608 146:2182 147:2117 148:2732 149:2905 150:1269 151:2446 152:2166 153:640 154:7406 155:2053 156:3447 157:1992 158:1434 159:2566 160:3608 161:1966 162:3922 163:2300 164:1912 165:2564 166:1556 167:2090 168:3809 169:779 170:5352 171:1006 172:4264 173:3403 174:902 175:1337 176:3767 177:4755 178:4117 179:2278 180:2604 181:4227 182:3712 183:2461 184:2076 185:21670 186:5386 187:4675 188:4275 189:4388 190:9669 191:1577 192:11420 193:9477 194:7795 195:5562 196:3292 197:3232 198:6248 199:8672 200:8226 201:6345 202:10430 203:10649 204:4564 205:3690 206:4550 207:3657 208:4270 209:5275 210:4741 211:2671 212:4687 213:3865 214:1041 215:52 216:6867 217:3320 218:1464 219:394 220:2147 221:1224 222:752 223:2918 End of report