IPv4 R&E Routing Table Report 21:10 GMT Sat 25 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: 1012140 Prefixes after maximum aggregation (per Origin AS): 392521 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498262 Number of IPv4 prefixes with a valid ROA: 582260 Number of IPv4 prefixes with an invalid ROA: 126 Number of IPv4 prefixes with no ROA: 429754 Total ASes present in the Internet Routing Table: 77443 Prefixes per ASN: 13.07 Origin-only ASes present in the Internet Routing Table: 66302 Origin ASes announcing only one prefix: 27115 Transit ASes present in the Internet Routing Table: 11141 Transit-only ASes present in the Internet Routing Table: 549 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: 64 Max AS path prepend of ASN ( 37447) 59 Prefixes from unregistered ASNs in the Routing Table: 962 Number of instances of unregistered ASNs: 991 Number of 32-bit ASNs allocated by the RIRs: 47809 Number of 32-bit ASNs visible in the Routing Table: 39186 Prefixes from 32-bit ASNs in the Routing Table: 213750 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: 425 Number of addresses announced to Internet: 3111822336 Equivalent to 185 /8s, 122 /16s and 164 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 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: 330521 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269932 Total APNIC prefixes after maximum aggregation: 80304 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 259776 Unique aggregates announced from the APNIC address blocks: 105779 APNIC Region origin ASes present in the Internet Routing Table: 14826 APNIC Prefixes per ASN: 17.52 APNIC Region origin ASes announcing only one prefix: 4517 APNIC Region transit ASes present in the Internet Routing Table: 1993 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: 10387 Number of APNIC addresses announced to Internet: 751468800 Equivalent to 44 /8s, 202 /16s and 129 /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: 299812 Total ARIN prefixes after maximum aggregation: 135102 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300519 Unique aggregates announced from the ARIN address blocks: 144681 ARIN Region origin ASes present in the Internet Routing Table: 19371 ARIN Prefixes per ASN: 15.51 ARIN Region origin ASes announcing only one prefix: 7108 ARIN Region transit ASes present in the Internet Routing Table: 1990 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5395 Number of ARIN addresses announced to Internet: 1352366592 Equivalent to 80 /8s, 155 /16s and 122 /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: 281010 Total RIPE prefixes after maximum aggregation: 139160 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280797 Unique aggregates announced from the RIPE address blocks: 181370 RIPE Region origin ASes present in the Internet Routing Table: 29083 RIPE Prefixes per ASN: 9.66 RIPE Region origin ASes announcing only one prefix: 12083 RIPE Region transit ASes present in the Internet Routing Table: 4029 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 37 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12777 Number of RIPE addresses announced to Internet: 733274880 Equivalent to 43 /8s, 180 /16s and 227 /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: 125238 Total LACNIC prefixes after maximum aggregation: 30416 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121366 Unique aggregates announced from the LACNIC address blocks: 49505 LACNIC Region origin ASes present in the Internet Routing Table: 11314 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2685 LACNIC Region transit ASes present in the Internet Routing Table: 2558 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: 9288 Number of LACNIC addresses announced to Internet: 170757632 Equivalent to 10 /8s, 45 /16s and 142 /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: 35186 Total AfriNIC prefixes after maximum aggregation: 6883 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 49256 Unique aggregates announced from the AfriNIC address blocks: 16551 AfriNIC Region origin ASes present in the Internet Routing Table: 1978 AfriNIC Prefixes per ASN: 24.90 AfriNIC Region origin ASes announcing only one prefix: 722 AfriNIC Region transit ASes present in the Internet Routing Table: 381 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 64 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1339 Number of AfriNIC addresses announced to Internet: 103728640 Equivalent to 6 /8s, 46 /16s and 198 /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 13307 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6128 834 592 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4480 536 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4410 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3983 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3715 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3294 1868 98 VNPT-AS-VN VNPT Corp, VN 56046 3234 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2934 863 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2407 268 1875 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14390 41104 5389 AMAZON-02, US 11492 4772 316 803 CABLEONE, US 22773 4261 3083 374 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3860 286 85 VIASAT-SP-BACKBONE, US 6327 3685 1320 82 SHAW, CA 396982 3278 4826 469 GOOGLE-CLOUD-PLATFORM, US 749 3218 54766 2469 DNIC-AS-00749, US 4155 3126 242 1748 USDA-1, US 16625 3009 1286 2195 AKAMAI-AS, US 174 2906 8766 827 COGENT-174, 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 7351 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 4025 3395 126 AKAMAI-ASN1, NL 9009 3982 376 2267 M247, RO 12389 3141 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2508 177 1816 CDNEXT, GB 34984 2416 363 577 TELLCOM-AS, TR 203020 1722 206 1003 HOSTROYALE, IN 8452 1674 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 12461 3295 574 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2510 510 349 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1280 371 23 Telefonica del Peru S.A.A., PE 11664 1263 278 32 Techtel LMDS Comunicaciones Interactivas 22884 1062 70 366 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1017 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 1925 630 32 RAYA-AS, EG 36992 1513 1498 386 ETISALAT-MISR, EG 24863 1262 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1189 102 52 ORANGE-COTE-IVOIRE, CI 36935 1101 521 44 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 572 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 14390 41104 5389 AMAZON-02, US 9808 13307 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12461 3295 574 UNINET, MX 12479 7351 1711 149 UNI2-AS, ES 7545 6128 834 592 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4772 316 803 CABLEONE, US 9498 4480 536 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4410 347 24 FPT-AS-AP FPT Telecom Company, VN 22773 4261 3083 374 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 13307 13190 CHINAMOBILE-CN China Mobile Communications Grou 8151 12461 11887 UNINET, MX 12479 7351 7202 UNI2-AS, ES 7545 6128 5536 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4410 4386 FPT-AS-AP FPT Telecom Company, VN 9498 4480 4169 BBIL-AP BHARTI Airtel Ltd., IN 11492 4772 3969 CABLEONE, US 7552 3983 3955 VIETEL-AS-AP Viettel Group, VN 20940 4025 3899 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 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 397015 UNALLOCATED 8.44.246.0/24 12025 IMDC-AS12025, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 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 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 /12:300 /13:583 /14:1201 /15:2129 /16:13786 /17:8244 /18:13505 /19:24719 /20:44431 /21:52070 /22:112940 /23:104745 /24:633322 /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 6669 12461 UNINET, MX 12479 6310 7351 UNI2-AS, ES 11492 3586 4772 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3474 3685 SHAW, CA 7155 2819 3860 VIASAT-SP-BACKBONE, US 22773 2628 4261 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2427 14390 AMAZON-02, US 30036 2296 2638 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3456 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 2:1564 3:955 4:10 5:4877 6:171 7:6 8:1513 9:6 11:172 12:1239 13:543 14:2651 15:402 16:303 17:387 18:907 20:579 21:4 22:189 23:8079 24:2609 25:2 27:2817 29:19 31:3351 32:31 33:1 34:81 35:275 36:4493 37:4553 38:9519 39:1097 40:453 41:4308 42:1955 43:2771 44:401 45:19136 46:5195 47:369 49:2104 50:2049 51:596 52:1630 54:357 55:1100 56:11 57:288 58:2284 59:1295 60:1189 61:2922 62:3088 63:1761 64:5845 65:2131 66:5618 67:3154 68:1473 69:4137 70:1035 71:637 72:2963 74:2870 75:1511 76:600 77:2756 78:1920 79:1751 80:2239 81:2126 82:3459 83:1469 84:1994 85:3581 86:1098 87:2142 88:1363 89:4512 90:814 91:8403 92:2802 93:2988 94:4154 95:4509 96:1489 97:313 98:949 99:754 100:71 101:1219 102:4236 103:32235 104:5432 105:778 106:896 107:2775 108:1202 109:4219 110:2248 111:3817 112:2721 113:1858 114:2070 115:2287 116:2088 117:3031 118:3063 119:1996 120:2321 121:1491 122:2810 123:2270 124:1655 125:2883 126:124 128:1600 129:964 130:1445 131:2203 132:791 133:461 134:1628 135:365 136:1438 137:1333 138:2831 139:1585 140:1642 141:1546 142:2206 143:2083 144:1296 145:629 146:2185 147:2127 148:2758 149:2886 150:1282 151:2611 152:2216 153:648 154:7965 155:2191 156:3225 157:2004 158:1448 159:2609 160:3647 161:2004 162:3977 163:2303 164:1950 165:2557 166:1513 167:2102 168:3799 169:780 170:5400 171:1059 172:4476 173:3426 174:904 175:1341 176:3756 177:4746 178:4294 179:2289 180:2738 181:4295 182:3754 183:2561 184:2074 185:21674 186:5370 187:4700 188:4383 189:4432 190:9730 191:1561 192:11401 193:9487 194:7835 195:5577 196:3265 197:3234 198:6260 199:8835 200:8215 201:6385 202:10488 203:10640 204:4639 205:3698 206:4406 207:3873 208:4265 209:5427 210:4744 211:2688 212:4900 213:3932 214:1035 215:53 216:7150 217:3362 218:1577 219:398 220:2197 221:1259 222:755 223:3098 End of report