IPv4 R&E Routing Table Report 21:10 GMT Thu 25 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: 1003792 Prefixes after maximum aggregation (per Origin AS): 389299 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495332 Number of IPv4 prefixes with a valid ROA: 573202 Number of IPv4 prefixes with an invalid ROA: 146 Number of IPv4 prefixes with no ROA: 430444 Total ASes present in the Internet Routing Table: 77355 Prefixes per ASN: 12.98 Origin-only ASes present in the Internet Routing Table: 66250 Origin ASes announcing only one prefix: 27091 Transit ASes present in the Internet Routing Table: 11105 Transit-only ASes present in the Internet Routing Table: 556 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: 1010 Number of instances of unregistered ASNs: 1039 Number of 32-bit ASNs allocated by the RIRs: 47551 Number of 32-bit ASNs visible in the Routing Table: 39032 Prefixes from 32-bit ASNs in the Routing Table: 210769 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: 433 Number of addresses announced to Internet: 3111508224 Equivalent to 185 /8s, 117 /16s and 217 /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: 327042 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 268416 Total APNIC prefixes after maximum aggregation: 79507 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 258387 Unique aggregates announced from the APNIC address blocks: 105712 APNIC Region origin ASes present in the Internet Routing Table: 14822 APNIC Prefixes per ASN: 17.43 APNIC Region origin ASes announcing only one prefix: 4514 APNIC Region transit ASes present in the Internet Routing Table: 1985 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: 10373 Number of APNIC addresses announced to Internet: 751022080 Equivalent to 44 /8s, 195 /16s and 176 /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: 294983 Total ARIN prefixes after maximum aggregation: 133835 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 296337 Unique aggregates announced from the ARIN address blocks: 142929 ARIN Region origin ASes present in the Internet Routing Table: 19316 ARIN Prefixes per ASN: 15.34 ARIN Region origin ASes announcing only one prefix: 7089 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: 49 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5338 Number of ARIN addresses announced to Internet: 1352739072 Equivalent to 80 /8s, 161 /16s and 41 /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: 279550 Total RIPE prefixes after maximum aggregation: 138171 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279152 Unique aggregates announced from the RIPE address blocks: 180410 RIPE Region origin ASes present in the Internet Routing Table: 29065 RIPE Prefixes per ASN: 9.60 RIPE Region origin ASes announcing only one prefix: 12094 RIPE Region transit ASes present in the Internet Routing Table: 4027 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: 12732 Number of RIPE addresses announced to Internet: 732912896 Equivalent to 43 /8s, 175 /16s and 93 /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: 124770 Total LACNIC prefixes after maximum aggregation: 30261 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120993 Unique aggregates announced from the LACNIC address blocks: 49435 LACNIC Region origin ASes present in the Internet Routing Table: 11291 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2673 LACNIC Region transit ASes present in the Internet Routing Table: 2529 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: 9257 Number of LACNIC addresses announced to Internet: 170712576 Equivalent to 10 /8s, 44 /16s and 222 /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: 35063 Total AfriNIC prefixes after maximum aggregation: 6853 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 48489 Unique aggregates announced from the AfriNIC address blocks: 16463 AfriNIC Region origin ASes present in the Internet Routing Table: 1967 AfriNIC Prefixes per ASN: 24.65 AfriNIC Region origin ASes announcing only one prefix: 721 AfriNIC Region transit ASes present in the Internet Routing Table: 384 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: 1332 Number of AfriNIC addresses announced to Internet: 103886592 Equivalent to 6 /8s, 49 /16s and 47 /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 13674 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6163 835 605 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4470 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4469 536 310 BBIL-AP BHARTI Airtel Ltd., IN 7552 3951 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3719 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3296 1868 99 VNPT-AS-VN VNPT Corp, VN 56046 3116 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2914 861 509 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2176 489 1395 HUTCHISON-AS-AP HGC Global Communications 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 14388 40907 5407 AMAZON-02, US 11492 4746 320 804 CABLEONE, US 22773 3949 3061 315 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3677 1320 82 SHAW, CA 174 3290 8773 824 COGENT-174, US 396982 3265 4823 458 GOOGLE-CLOUD-PLATFORM, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3056 237 1704 USDA-1, US 16625 3047 1303 2216 AKAMAI-AS, 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 7454 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4031 3395 126 AKAMAI-ASN1, NL 9009 3906 367 2205 M247, RO 12389 3120 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2436 173 1760 CDNEXT, GB 34984 2415 363 573 TELLCOM-AS, TR 203020 1863 198 872 HOSTROYALE, IN 8452 1620 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 12324 3276 575 UNINET, MX 10620 3492 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 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1230 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1177 371 23 Telefonica del Peru S.A.A., PE 22884 1063 71 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1005 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 1846 652 28 RAYA-AS, EG 36992 1509 1498 384 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 24863 1247 389 20 LINKdotNET-AS, EG 29571 1185 102 53 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 1077 522 45 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 574 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 14388 40907 5407 AMAZON-02, US 9808 13674 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12324 3276 575 UNINET, MX 12479 7454 1711 149 UNI2-AS, ES 7545 6163 835 605 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4746 320 804 CABLEONE, US 18403 4470 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4469 536 310 BBIL-AP BHARTI Airtel Ltd., IN 20940 4031 3395 126 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 13674 13558 CHINAMOBILE-CN China Mobile Communications Grou 8151 12324 11749 UNINET, MX 12479 7454 7305 UNI2-AS, ES 7545 6163 5558 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4470 4445 FPT-AS-AP FPT Telecom Company, VN 9498 4469 4159 BBIL-AP BHARTI Airtel Ltd., IN 11492 4746 3942 CABLEONE, US 7552 3951 3923 VIETEL-AS-AP Viettel Group, VN 20940 4031 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 /12:301 /13:583 /14:1209 /15:2143 /16:13768 /17:8220 /18:13449 /19:24628 /20:44289 /21:52014 /22:112612 /23:103815 /24:626596 /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 6542 12324 UNINET, MX 12479 6425 7454 UNI2-AS, ES 11492 3560 4746 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3677 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2511 3949 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2447 14388 AMAZON-02, US 30036 2297 2638 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2210 3492 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) ---------------------------------------------- 1:2426 2:1566 3:941 4:10 5:4844 6:165 7:6 8:1533 9:6 11:172 12:1245 13:563 14:2631 15:401 16:304 17:388 18:907 20:573 21:4 22:188 23:7899 24:2699 25:2 27:2810 29:19 31:3350 32:31 33:1 34:81 35:267 36:4435 37:4533 38:9483 39:1091 40:293 41:4314 42:1978 43:2712 44:380 45:18859 46:5147 47:343 49:2016 50:2041 51:593 52:1606 54:365 55:1097 56:11 57:285 58:2252 59:1296 60:1188 61:2918 62:3049 63:1773 64:5629 65:2146 66:4909 67:3110 68:1084 69:3944 70:1033 71:639 72:2901 74:2833 75:1499 76:602 77:2753 78:1917 79:1757 80:2241 81:2111 82:3440 83:1459 84:1983 85:3518 86:1092 87:2134 88:1359 89:4500 90:813 91:8401 92:2781 93:2986 94:4171 95:4477 96:1493 97:312 98:953 99:762 100:71 101:1216 102:4150 103:32289 104:5360 105:784 106:876 107:2654 108:1214 109:4204 110:2238 111:3772 112:2648 113:1849 114:1994 115:2319 116:2082 117:2930 118:3060 119:1937 120:2267 121:1355 122:2822 123:2259 124:1663 125:2878 126:91 128:1608 129:966 130:1298 131:2134 132:786 133:460 134:1615 135:364 136:1487 137:1321 138:2805 139:1617 140:1639 141:1554 142:1909 143:2033 144:1281 145:626 146:2179 147:2120 148:2734 149:2910 150:1263 151:2499 152:2172 153:642 154:7484 155:2043 156:3477 157:1994 158:1420 159:2583 160:3575 161:1977 162:3935 163:2296 164:1923 165:2573 166:1559 167:2094 168:3809 169:782 170:5345 171:1008 172:4269 173:3410 174:904 175:1340 176:3815 177:4727 178:4211 179:2270 180:2619 181:4256 182:3730 183:2528 184:2073 185:21651 186:5385 187:4674 188:4269 189:4353 190:9686 191:1569 192:11412 193:9466 194:7793 195:5574 196:3281 197:3252 198:6245 199:8714 200:8229 201:6350 202:10452 203:10657 204:4586 205:3678 206:4558 207:3678 208:4271 209:5337 210:4755 211:2683 212:4771 213:3892 214:1041 215:52 216:6933 217:3333 218:1569 219:394 220:2189 221:1236 222:751 223:3012 End of report