IPv4 R&E Routing Table Report 21:10 GMT Sun 21 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: 1002281 Prefixes after maximum aggregation (per Origin AS): 389170 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 494938 Number of IPv4 prefixes with a valid ROA: 571899 Number of IPv4 prefixes with an invalid ROA: 151 Number of IPv4 prefixes with no ROA: 430231 Total ASes present in the Internet Routing Table: 77324 Prefixes per ASN: 12.96 Origin-only ASes present in the Internet Routing Table: 66238 Origin ASes announcing only one prefix: 27077 Transit ASes present in the Internet Routing Table: 11086 Transit-only ASes present in the Internet Routing Table: 550 Paths with bogon ASNs present in the IPv4 Routing Table: 6 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: 1026 Number of instances of unregistered ASNs: 1055 Number of 32-bit ASNs allocated by the RIRs: 47520 Number of 32-bit ASNs visible in the Routing Table: 38988 Prefixes from 32-bit ASNs in the Routing Table: 210437 Number of bogon 32-bit ASNs visible in the Routing Table: 70 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 434 Number of addresses announced to Internet: 3111652096 Equivalent to 185 /8s, 120 /16s and 11 /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: 326547 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 267495 Total APNIC prefixes after maximum aggregation: 79252 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 257718 Unique aggregates announced from the APNIC address blocks: 105644 APNIC Region origin ASes present in the Internet Routing Table: 14801 APNIC Prefixes per ASN: 17.41 APNIC Region origin ASes announcing only one prefix: 4510 APNIC Region transit ASes present in the Internet Routing Table: 1972 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: 10347 Number of APNIC addresses announced to Internet: 750426112 Equivalent to 44 /8s, 186 /16s and 152 /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: 294666 Total ARIN prefixes after maximum aggregation: 134001 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 295946 Unique aggregates announced from the ARIN address blocks: 142802 ARIN Region origin ASes present in the Internet Routing Table: 19316 ARIN Prefixes per ASN: 15.32 ARIN Region origin ASes announcing only one prefix: 7080 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: 5333 Number of ARIN addresses announced to Internet: 1353430784 Equivalent to 80 /8s, 171 /16s and 183 /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: 279307 Total RIPE prefixes after maximum aggregation: 138132 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278640 Unique aggregates announced from the RIPE address blocks: 180158 RIPE Region origin ASes present in the Internet Routing Table: 29063 RIPE Prefixes per ASN: 9.59 RIPE Region origin ASes announcing only one prefix: 12099 RIPE Region transit ASes present in the Internet Routing Table: 4013 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: 12720 Number of RIPE addresses announced to Internet: 732561408 Equivalent to 43 /8s, 170 /16s and 0 /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: 124884 Total LACNIC prefixes after maximum aggregation: 30274 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121116 Unique aggregates announced from the LACNIC address blocks: 49462 LACNIC Region origin ASes present in the Internet Routing Table: 11293 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2674 LACNIC Region transit ASes present in the Internet Routing Table: 2527 Average LACNIC Region AS path length visible: 5.2 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9263 Number of LACNIC addresses announced to Internet: 170638848 Equivalent to 10 /8s, 43 /16s and 190 /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: 34903 Total AfriNIC prefixes after maximum aggregation: 6832 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 48426 Unique aggregates announced from the AfriNIC address blocks: 16489 AfriNIC Region origin ASes present in the Internet Routing Table: 1961 AfriNIC Prefixes per ASN: 24.69 AfriNIC Region origin ASes announcing only one prefix: 714 AfriNIC Region transit ASes present in the Internet Routing Table: 387 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: 1325 Number of AfriNIC addresses announced to Internet: 104360448 Equivalent to 6 /8s, 56 /16s and 106 /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 13502 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6162 837 603 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4468 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4450 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3941 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3714 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3295 1868 99 VNPT-AS-VN VNPT Corp, VN 56046 3074 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2920 863 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2170 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 14422 40909 5408 AMAZON-02, US 11492 4737 320 807 CABLEONE, US 22773 3946 3061 315 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3676 1320 81 SHAW, CA 174 3286 8774 825 COGENT-174, US 396982 3263 4823 458 GOOGLE-CLOUD-PLATFORM, US 749 3221 54766 2472 DNIC-AS-00749, US 16625 3055 1300 2215 AKAMAI-AS, US 4155 3031 235 1725 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 7460 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4032 3395 127 AKAMAI-ASN1, NL 9009 3913 368 2217 M247, RO 12389 3119 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2417 171 1750 CDNEXT, GB 34984 2415 363 574 TELLCOM-AS, TR 203020 1960 230 916 HOSTROYALE, IN 8452 1628 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 12347 3276 574 UNINET, MX 10620 3494 473 1048 Telmex Colombia S.A., CO 13999 2542 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1355 2415 299 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1228 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1186 371 23 Telefonica del Peru S.A.A., PE 22884 1065 71 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 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 1508 1498 384 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 24863 1247 389 20 LINKdotNET-AS, EG 29571 1185 102 51 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 1029 522 45 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 565 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 14422 40909 5408 AMAZON-02, US 9808 13502 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12347 3276 574 UNINET, MX 12479 7460 1711 149 UNI2-AS, ES 7545 6162 837 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4737 320 807 CABLEONE, US 9498 4468 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4450 347 25 FPT-AS-AP FPT Telecom Company, VN 20940 4032 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 13502 13386 CHINAMOBILE-CN China Mobile Communications Grou 8151 12347 11773 UNINET, MX 12479 7460 7311 UNI2-AS, ES 7545 6162 5559 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4450 4425 FPT-AS-AP FPT Telecom Company, VN 9498 4468 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4737 3930 CABLEONE, US 7552 3941 3914 VIETEL-AS-AP Viettel Group, VN 20940 4032 3905 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 /11:93 /12:298 /13:581 /14:1210 /15:2151 /16:13769 /17:8220 /18:13462 /19:24620 /20:44291 /21:52029 /22:112459 /23:103736 /24:625290 /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 6564 12347 UNINET, MX 12479 6428 7460 UNI2-AS, ES 11492 3552 4737 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3676 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2508 3946 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2450 14422 AMAZON-02, US 30036 2295 2636 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2212 3494 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) ---------------------------------------------- 1:2420 2:1551 3:939 4:10 5:4828 6:165 7:6 8:1539 9:6 11:172 12:1247 13:568 14:2620 15:399 16:303 17:386 18:905 20:572 21:4 22:188 23:7897 24:2706 25:2 27:2810 29:19 31:3357 32:30 33:1 34:81 35:267 36:4362 37:4529 38:9406 39:1074 40:283 41:4311 42:1970 43:2717 44:382 45:18884 46:5145 47:343 49:2012 50:2046 51:593 52:1610 54:373 55:1086 56:11 57:287 58:2246 59:1292 60:1187 61:2880 62:3032 63:1767 64:5636 65:2115 66:4900 67:3107 68:1082 69:3930 70:1031 71:640 72:2892 74:2831 75:1499 76:602 77:2773 78:1921 79:1757 80:2234 81:2093 82:3338 83:1458 84:1972 85:3496 86:1095 87:2138 88:1360 89:4494 90:809 91:8414 92:2789 93:2973 94:4161 95:4468 96:1486 97:312 98:952 99:762 100:71 101:1217 102:4119 103:32322 104:5329 105:784 106:880 107:2654 108:1221 109:4212 110:2239 111:3732 112:2611 113:1843 114:1993 115:2324 116:2079 117:2863 118:3060 119:1928 120:2239 121:1358 122:2792 123:2261 124:1660 125:2876 126:91 128:1605 129:965 130:1301 131:2133 132:790 133:461 134:1604 135:362 136:1488 137:1329 138:2809 139:1611 140:1642 141:1543 142:1915 143:2036 144:1264 145:623 146:2182 147:2114 148:2733 149:2909 150:1265 151:2523 152:2125 153:637 154:7461 155:2041 156:3465 157:1994 158:1430 159:2569 160:3563 161:1965 162:3929 163:2301 164:1907 165:2567 166:1559 167:2093 168:3818 169:776 170:5346 171:1007 172:4256 173:3405 174:902 175:1341 176:3800 177:4762 178:4169 179:2281 180:2607 181:4260 182:3727 183:2480 184:2077 185:21666 186:5419 187:4701 188:4274 189:4381 190:9703 191:1547 192:11408 193:9467 194:7798 195:5565 196:3291 197:3234 198:6249 199:8702 200:8209 201:6343 202:10432 203:10649 204:4568 205:3674 206:4553 207:3663 208:4265 209:5301 210:4762 211:2676 212:4699 213:3861 214:1035 215:52 216:6882 217:3330 218:1505 219:394 220:2148 221:1234 222:752 223:2967 End of report