IPv4 R&E Routing Table Report 21:10 GMT Mon 13 Oct, 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: 1008421 Prefixes after maximum aggregation (per Origin AS): 391251 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 497268 Number of IPv4 prefixes with a valid ROA: 578149 Number of IPv4 prefixes with an invalid ROA: 144 Number of IPv4 prefixes with no ROA: 430128 Total ASes present in the Internet Routing Table: 77427 Prefixes per ASN: 13.02 Origin-only ASes present in the Internet Routing Table: 66314 Origin ASes announcing only one prefix: 27098 Transit ASes present in the Internet Routing Table: 11113 Transit-only ASes present in the Internet Routing Table: 562 Paths with bogon ASNs present in the IPv4 Routing Table: 45 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: 999 Number of instances of unregistered ASNs: 1065 Number of 32-bit ASNs allocated by the RIRs: 47694 Number of 32-bit ASNs visible in the Routing Table: 39132 Prefixes from 32-bit ASNs in the Routing Table: 212491 Number of bogon 32-bit ASNs visible in the Routing Table: 148 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 453 Number of addresses announced to Internet: 3111155968 Equivalent to 185 /8s, 112 /16s and 121 /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: 328735 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269574 Total APNIC prefixes after maximum aggregation: 80068 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 259275 Unique aggregates announced from the APNIC address blocks: 105866 APNIC Region origin ASes present in the Internet Routing Table: 14833 APNIC Prefixes per ASN: 17.48 APNIC Region origin ASes announcing only one prefix: 4531 APNIC Region transit ASes present in the Internet Routing Table: 1982 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: 10389 Number of APNIC addresses announced to Internet: 751538688 Equivalent to 44 /8s, 203 /16s and 146 /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: 297464 Total ARIN prefixes after maximum aggregation: 134449 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298462 Unique aggregates announced from the ARIN address blocks: 144007 ARIN Region origin ASes present in the Internet Routing Table: 19346 ARIN Prefixes per ASN: 15.43 ARIN Region origin ASes announcing only one prefix: 7099 ARIN Region transit ASes present in the Internet Routing Table: 1985 Average ARIN Region AS path length visible: 3.9 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5362 Number of ARIN addresses announced to Internet: 1352410112 Equivalent to 80 /8s, 156 /16s and 36 /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: 280350 Total RIPE prefixes after maximum aggregation: 138847 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280379 Unique aggregates announced from the RIPE address blocks: 181184 RIPE Region origin ASes present in the Internet Routing Table: 29078 RIPE Prefixes per ASN: 9.64 RIPE Region origin ASes announcing only one prefix: 12088 RIPE Region transit ASes present in the Internet Routing Table: 4017 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: 12764 Number of RIPE addresses announced to Internet: 732530944 Equivalent to 43 /8s, 169 /16s and 137 /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: 125106 Total LACNIC prefixes after maximum aggregation: 30347 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121235 Unique aggregates announced from the LACNIC address blocks: 49462 LACNIC Region origin ASes present in the Internet Routing Table: 11302 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2663 LACNIC Region transit ASes present in the Internet Routing Table: 2549 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9279 Number of LACNIC addresses announced to Internet: 170700288 Equivalent to 10 /8s, 44 /16s and 174 /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: 34928 Total AfriNIC prefixes after maximum aggregation: 6867 AfriNIC Deaggregation factor: 5.09 Prefixes being announced from the AfriNIC address blocks: 48616 Unique aggregates announced from the AfriNIC address blocks: 16349 AfriNIC Region origin ASes present in the Internet Routing Table: 1975 AfriNIC Prefixes per ASN: 24.62 AfriNIC Region origin ASes announcing only one prefix: 717 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 42 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1338 Number of AfriNIC addresses announced to Internet: 103735552 Equivalent to 6 /8s, 46 /16s and 225 /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 13734 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6184 835 604 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4415 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3972 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3687 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3300 1868 99 VNPT-AS-VN VNPT Corp, VN 56046 3136 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2915 861 506 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2510 516 1635 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 14274 40986 5345 AMAZON-02, US 11492 4756 321 791 CABLEONE, US 22773 4111 3074 366 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3683 1320 82 SHAW, CA 396982 3275 4824 465 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3101 240 1737 USDA-1, US 174 3077 8766 800 COGENT-174, US 16625 3039 1301 2212 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 7400 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 4043 3395 126 AKAMAI-ASN1, NL 9009 3945 371 2236 M247, RO 12389 3110 2310 844 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2517 180 1830 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1679 198 987 HOSTROYALE, IN 8452 1643 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 12365 3281 574 UNINET, MX 10620 3476 468 1086 Telmex Colombia S.A., CO 13999 2528 511 345 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1372 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1240 278 32 Techtel LMDS Comunicaciones Interactivas 6147 1230 371 23 Telefonica del Peru S.A.A., PE 22884 1065 71 366 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 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 1767 594 28 RAYA-AS, EG 36992 1512 1498 385 ETISALAT-MISR, EG 24863 1250 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1189 102 52 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 1010 523 47 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 573 82 3 KENET-AS, KE 15399 544 57 55 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 14274 40986 5345 AMAZON-02, US 9808 13734 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12365 3281 574 UNINET, MX 12479 7400 1711 149 UNI2-AS, ES 7545 6184 835 604 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4756 321 791 CABLEONE, US 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4415 347 24 FPT-AS-AP FPT Telecom Company, VN 22773 4111 3074 366 ASN-CXA-ALL-CCI-22773-RDC, US 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 13734 13617 CHINAMOBILE-CN China Mobile Communications Grou 8151 12365 11791 UNINET, MX 12479 7400 7251 UNI2-AS, ES 7545 6184 5580 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4415 4391 FPT-AS-AP FPT Telecom Company, VN 9498 4477 4165 BBIL-AP BHARTI Airtel Ltd., IN 11492 4756 3965 CABLEONE, US 7552 3972 3944 VIETEL-AS-AP Viettel Group, VN 20940 4043 3917 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 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 397015 UNALLOCATED 8.44.246.0/24 12025 IMDC-AS12025, 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 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, 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 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 /12:300 /13:583 /14:1203 /15:2129 /16:13781 /17:8212 /18:13476 /19:24697 /20:44296 /21:51978 /22:112656 /23:104407 /24:630538 /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 6588 12365 UNINET, MX 12479 6367 7400 UNI2-AS, ES 11492 3569 4756 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3472 3683 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2587 4111 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2387 14274 AMAZON-02, US 30036 2303 2643 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3476 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) ---------------------------------------------- 1:2423 2:1563 3:939 4:10 5:4839 6:170 7:6 8:1531 9:6 11:172 12:1240 13:561 14:2651 15:403 16:304 17:388 18:906 20:575 21:4 22:188 23:7992 24:2701 25:2 27:2811 29:19 31:3354 32:31 33:1 34:81 35:269 36:4447 37:4545 38:9488 39:1099 40:471 41:4302 42:1969 43:2746 44:399 45:19092 46:5192 47:367 49:2084 50:2058 51:596 52:1592 54:359 55:1088 56:11 57:285 58:2292 59:1308 60:1189 61:2917 62:3097 63:1770 64:5674 65:2128 66:5066 67:3121 68:1226 69:4027 70:1037 71:634 72:2979 74:2841 75:1505 76:602 77:2767 78:1917 79:1754 80:2249 81:2137 82:3480 83:1476 84:1992 85:3529 86:1100 87:2146 88:1358 89:4506 90:812 91:8393 92:2812 93:2981 94:4147 95:4519 96:1493 97:312 98:949 99:752 100:71 101:1222 102:4190 103:32261 104:5451 105:787 106:887 107:2733 108:1210 109:4228 110:2248 111:3767 112:2663 113:1844 114:2072 115:2340 116:2081 117:3026 118:3037 119:1982 120:2287 121:1486 122:2810 123:2267 124:1655 125:2882 126:125 128:1605 129:964 130:1398 131:2168 132:786 133:462 134:1623 135:364 136:1490 137:1321 138:2832 139:1602 140:1629 141:1540 142:2154 143:2087 144:1272 145:628 146:2186 147:2135 148:2740 149:2937 150:1275 151:2604 152:2180 153:642 154:7731 155:2104 156:3159 157:1992 158:1432 159:2606 160:3641 161:1994 162:3960 163:2297 164:1954 165:2545 166:1562 167:2112 168:3828 169:781 170:5370 171:1057 172:4472 173:3415 174:906 175:1345 176:3795 177:4821 178:4294 179:2269 180:2736 181:4251 182:3749 183:2534 184:2072 185:21668 186:5350 187:4705 188:4381 189:4416 190:9700 191:1548 192:11410 193:9473 194:7805 195:5579 196:3297 197:3244 198:6243 199:8784 200:8199 201:6362 202:10472 203:10619 204:4613 205:3706 206:4442 207:3732 208:4267 209:5378 210:4745 211:2684 212:4838 213:3900 214:1033 215:52 216:6964 217:3363 218:1577 219:394 220:2191 221:1250 222:753 223:3057 End of report