IPv4 R&E Routing Table Report 21:10 GMT Sun 28 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: 1004118 Prefixes after maximum aggregation (per Origin AS): 389286 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495471 Number of IPv4 prefixes with a valid ROA: 573269 Number of IPv4 prefixes with an invalid ROA: 147 Number of IPv4 prefixes with no ROA: 430702 Total ASes present in the Internet Routing Table: 77343 Prefixes per ASN: 12.98 Origin-only ASes present in the Internet Routing Table: 66244 Origin ASes announcing only one prefix: 27080 Transit ASes present in the Internet Routing Table: 11099 Transit-only ASes present in the Internet Routing Table: 552 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: 977 Number of instances of unregistered ASNs: 1007 Number of 32-bit ASNs allocated by the RIRs: 47585 Number of 32-bit ASNs visible in the Routing Table: 39033 Prefixes from 32-bit ASNs in the Routing Table: 210816 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: 433 Number of addresses announced to Internet: 3111404032 Equivalent to 185 /8s, 116 /16s and 66 /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: 327250 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 268527 Total APNIC prefixes after maximum aggregation: 79524 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 258523 Unique aggregates announced from the APNIC address blocks: 105815 APNIC Region origin ASes present in the Internet Routing Table: 14818 APNIC Prefixes per ASN: 17.45 APNIC Region origin ASes announcing only one prefix: 4512 APNIC Region transit ASes present in the Internet Routing Table: 1981 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: 10368 Number of APNIC addresses announced to Internet: 751082496 Equivalent to 44 /8s, 196 /16s and 156 /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: 294966 Total ARIN prefixes after maximum aggregation: 133799 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 296322 Unique aggregates announced from the ARIN address blocks: 142968 ARIN Region origin ASes present in the Internet Routing Table: 19319 ARIN Prefixes per ASN: 15.34 ARIN Region origin ASes announcing only one prefix: 7093 ARIN Region transit ASes present in the Internet Routing Table: 1985 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: 5342 Number of ARIN addresses announced to Internet: 1352474112 Equivalent to 80 /8s, 157 /16s and 30 /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: 279694 Total RIPE prefixes after maximum aggregation: 138201 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279271 Unique aggregates announced from the RIPE address blocks: 180446 RIPE Region origin ASes present in the Internet Routing Table: 29072 RIPE Prefixes per ASN: 9.61 RIPE Region origin ASes announcing only one prefix: 12096 RIPE Region transit ASes present in the Internet Routing Table: 4022 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: 12739 Number of RIPE addresses announced to Internet: 732956416 Equivalent to 43 /8s, 176 /16s and 7 /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: 124887 Total LACNIC prefixes after maximum aggregation: 30241 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121125 Unique aggregates announced from the LACNIC address blocks: 49425 LACNIC Region origin ASes present in the Internet Routing Table: 11277 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2655 LACNIC Region transit ASes present in the Internet Routing Table: 2523 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: 9252 Number of LACNIC addresses announced to Internet: 170639360 Equivalent to 10 /8s, 43 /16s and 192 /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: 35067 Total AfriNIC prefixes after maximum aggregation: 6856 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 48443 Unique aggregates announced from the AfriNIC address blocks: 16434 AfriNIC Region origin ASes present in the Internet Routing Table: 1970 AfriNIC Prefixes per ASN: 24.59 AfriNIC Region origin ASes announcing only one prefix: 724 AfriNIC Region transit ASes present in the Internet Routing Table: 386 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: 104016640 Equivalent to 6 /8s, 51 /16s and 43 /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 835 604 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4471 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 311 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 3297 1868 99 VNPT-AS-VN VNPT Corp, VN 56046 3116 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 862 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2256 496 1435 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 14312 40903 5404 AMAZON-02, US 11492 4746 320 804 CABLEONE, US 22773 3952 3061 316 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3677 1320 82 SHAW, CA 174 3272 8770 813 COGENT-174, US 396982 3269 4823 459 GOOGLE-CLOUD-PLATFORM, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3067 237 1699 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 7450 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4031 3395 126 AKAMAI-ASN1, NL 9009 3923 368 2204 M247, RO 12389 3120 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2443 173 1767 CDNEXT, GB 34984 2412 363 573 TELLCOM-AS, TR 203020 1863 198 872 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 12363 3278 573 UNINET, MX 10620 3502 473 1046 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 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1231 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1178 371 23 Telefonica del Peru S.A.A., PE 22884 1063 71 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 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 1847 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 557 82 3 KENET-AS, KE 15399 548 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 14312 40903 5404 AMAZON-02, US 9808 13674 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12363 3278 573 UNINET, MX 12479 7450 1711 149 UNI2-AS, ES 7545 6163 835 604 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4746 320 804 CABLEONE, US 18403 4471 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 311 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 12363 11790 UNINET, MX 12479 7450 7301 UNI2-AS, ES 7545 6163 5559 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4471 4446 FPT-AS-AP FPT Telecom Company, VN 9498 4470 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 /14:1208 /15:2142 /16:13776 /17:8216 /18:13465 /19:24641 /20:44345 /21:52028 /22:112596 /23:103907 /24:626745 /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 6582 12363 UNINET, MX 12479 6423 7450 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 2514 3952 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2434 14312 AMAZON-02, US 30036 2292 2634 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2220 3502 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 2:1562 3:935 4:10 5:4847 6:170 7:6 8:1534 9:6 11:172 12:1244 13:550 14:2632 15:399 16:301 17:388 18:901 20:573 21:4 22:188 23:7911 24:2702 25:2 27:2804 29:19 31:3347 32:31 33:1 34:81 35:267 36:4438 37:4539 38:9495 39:1090 40:293 41:4341 42:1981 43:2721 44:387 45:18880 46:5154 47:342 49:2014 50:2041 51:594 52:1601 54:362 55:1036 56:11 57:286 58:2256 59:1303 60:1188 61:2914 62:3070 63:1766 64:5637 65:2138 66:4925 67:3106 68:1086 69:3940 70:1033 71:639 72:2905 74:2833 75:1498 76:599 77:2757 78:1920 79:1759 80:2238 81:2103 82:3439 83:1470 84:1984 85:3516 86:1094 87:2136 88:1360 89:4498 90:813 91:8403 92:2785 93:2977 94:4174 95:4479 96:1494 97:312 98:953 99:764 100:71 101:1220 102:4144 103:32312 104:5358 105:785 106:894 107:2654 108:1210 109:4223 110:2242 111:3779 112:2650 113:1849 114:1990 115:2320 116:2079 117:2940 118:3054 119:1930 120:2273 121:1352 122:2821 123:2262 124:1654 125:2881 126:91 128:1602 129:965 130:1276 131:2146 132:788 133:461 134:1609 135:365 136:1495 137:1319 138:2805 139:1616 140:1642 141:1549 142:1910 143:2029 144:1274 145:626 146:2180 147:2124 148:2727 149:2909 150:1259 151:2518 152:2174 153:643 154:7449 155:2049 156:3434 157:1990 158:1415 159:2587 160:3578 161:1986 162:3929 163:2302 164:1928 165:2576 166:1559 167:2097 168:3821 169:780 170:5366 171:1010 172:4269 173:3403 174:905 175:1341 176:3808 177:4754 178:4235 179:2267 180:2611 181:4238 182:3735 183:2532 184:2072 185:21677 186:5371 187:4679 188:4274 189:4383 190:9680 191:1546 192:11414 193:9475 194:7787 195:5578 196:3283 197:3237 198:6246 199:8722 200:8191 201:6365 202:10461 203:10663 204:4587 205:3673 206:4553 207:3690 208:4283 209:5348 210:4764 211:2683 212:4767 213:3891 214:1036 215:52 216:6937 217:3348 218:1566 219:394 220:2188 221:1235 222:752 223:3014 End of report