IPv4 R&E Routing Table Report 21:10 GMT Sun 26 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: 1012028 Prefixes after maximum aggregation (per Origin AS): 392549 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498309 Number of IPv4 prefixes with a valid ROA: 582250 Number of IPv4 prefixes with an invalid ROA: 125 Number of IPv4 prefixes with no ROA: 429653 Total ASes present in the Internet Routing Table: 77446 Prefixes per ASN: 13.07 Origin-only ASes present in the Internet Routing Table: 66314 Origin ASes announcing only one prefix: 27107 Transit ASes present in the Internet Routing Table: 11132 Transit-only ASes present in the Internet Routing Table: 550 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: 958 Number of instances of unregistered ASNs: 987 Number of 32-bit ASNs allocated by the RIRs: 47816 Number of 32-bit ASNs visible in the Routing Table: 39180 Prefixes from 32-bit ASNs in the Routing Table: 213650 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: 418 Number of addresses announced to Internet: 3111874560 Equivalent to 185 /8s, 123 /16s and 112 /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: 330460 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269886 Total APNIC prefixes after maximum aggregation: 80304 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 259721 Unique aggregates announced from the APNIC address blocks: 105796 APNIC Region origin ASes present in the Internet Routing Table: 14827 APNIC Prefixes per ASN: 17.52 APNIC Region origin ASes announcing only one prefix: 4509 APNIC Region transit ASes present in the Internet Routing Table: 1990 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: 10385 Number of APNIC addresses announced to Internet: 751570432 Equivalent to 44 /8s, 204 /16s and 14 /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: 299898 Total ARIN prefixes after maximum aggregation: 135135 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300548 Unique aggregates announced from the ARIN address blocks: 144704 ARIN Region origin ASes present in the Internet Routing Table: 19370 ARIN Prefixes per ASN: 15.52 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: 5393 Number of ARIN addresses announced to Internet: 1352342016 Equivalent to 80 /8s, 155 /16s and 26 /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: 280960 Total RIPE prefixes after maximum aggregation: 139162 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280751 Unique aggregates announced from the RIPE address blocks: 181406 RIPE Region origin ASes present in the Internet Routing Table: 29088 RIPE Prefixes per ASN: 9.65 RIPE Region origin ASes announcing only one prefix: 12084 RIPE Region transit ASes present in the Internet Routing Table: 4030 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12778 Number of RIPE addresses announced to Internet: 733278720 Equivalent to 43 /8s, 180 /16s and 242 /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: 125183 Total LACNIC prefixes after maximum aggregation: 30406 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121306 Unique aggregates announced from the LACNIC address blocks: 49482 LACNIC Region origin ASes present in the Internet Routing Table: 11312 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2684 LACNIC Region transit ASes present in the Internet Routing Table: 2554 Average LACNIC Region AS path length visible: 5.2 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9286 Number of LACNIC addresses announced to Internet: 170733824 Equivalent to 10 /8s, 45 /16s and 49 /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: 35143 Total AfriNIC prefixes after maximum aggregation: 6885 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 49283 Unique aggregates announced from the AfriNIC address blocks: 16547 AfriNIC Region origin ASes present in the Internet Routing Table: 1977 AfriNIC Prefixes per ASN: 24.93 AfriNIC Region origin ASes announcing only one prefix: 722 AfriNIC Region transit ASes present in the Internet Routing Table: 380 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: 1338 Number of AfriNIC addresses announced to Internet: 103725824 Equivalent to 6 /8s, 46 /16s and 187 /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 4484 537 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4434 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3983 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3714 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3296 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 14395 41104 5389 AMAZON-02, US 11492 4772 316 803 CABLEONE, US 22773 4277 3084 372 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 3125 242 1746 USDA-1, US 16625 3000 1282 2190 AKAMAI-AS, US 174 2910 8766 831 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 7352 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 4022 3395 124 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 1678 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 12460 3295 575 UNINET, MX 10620 3455 463 1098 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 1279 371 23 Telefonica del Peru S.A.A., PE 11664 1263 278 32 Techtel LMDS Comunicaciones Interactivas 22884 1061 70 365 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1024 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 37069 1085 1096 13 MOBINIL, EG 36935 1067 523 47 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 568 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 14395 41104 5389 AMAZON-02, US 9808 13307 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12460 3295 575 UNINET, MX 12479 7352 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 4484 537 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4434 347 24 FPT-AS-AP FPT Telecom Company, VN 22773 4277 3084 372 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 12460 11885 UNINET, MX 12479 7352 7203 UNI2-AS, ES 7545 6128 5536 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4434 4410 FPT-AS-AP FPT Telecom Company, VN 9498 4484 4172 BBIL-AP BHARTI Airtel Ltd., IN 11492 4772 3969 CABLEONE, US 7552 3983 3955 VIETEL-AS-AP Viettel Group, VN 22773 4277 3905 ASN-CXA-ALL-CCI-22773-RDC, US 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 /14:1202 /15:2129 /16:13787 /17:8241 /18:13507 /19:24724 /20:44410 /21:52050 /22:112887 /23:104707 /24:633336 /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 12460 UNINET, MX 12479 6311 7352 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 2644 4277 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2427 14395 AMAZON-02, US 30036 2296 2638 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2210 3455 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) ---------------------------------------------- 1:2433 2:1563 3:959 4:10 5:4860 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 23:8075 24:2611 25:2 27:2816 29:19 31:3345 32:31 33:1 34:81 35:275 36:4496 37:4551 38:9512 39:1098 40:450 41:4306 42:1982 43:2771 44:399 45:19138 46:5190 47:369 49:2100 50:2051 51:596 52:1630 54:357 55:1104 56:11 57:288 58:2286 59:1295 60:1189 61:2919 62:3087 63:1762 64:5841 65:2132 66:5620 67:3152 68:1473 69:4137 70:1035 71:637 72:2966 74:2869 75:1512 76:601 77:2764 78:1920 79:1734 80:2242 81:2127 82:3449 83:1471 84:1993 85:3582 86:1099 87:2142 88:1363 89:4513 90:815 91:8402 92:2800 93:2987 94:4157 95:4509 96:1489 97:312 98:949 99:754 100:71 101:1213 102:4228 103:32257 104:5431 105:785 106:896 107:2791 108:1203 109:4218 110:2247 111:3818 112:2716 113:1855 114:2071 115:2286 116:2092 117:3033 118:3054 119:1998 120:2321 121:1489 122:2810 123:2271 124:1656 125:2882 126:124 128:1597 129:964 130:1447 131:2201 132:791 133:461 134:1627 135:365 136:1490 137:1336 138:2829 139:1591 140:1643 141:1547 142:2202 143:2094 144:1301 145:629 146:2184 147:2126 148:2758 149:2888 150:1281 151:2607 152:2217 153:648 154:7959 155:2191 156:3295 157:2003 158:1450 159:2605 160:3648 161:2000 162:3979 163:2306 164:1956 165:2558 166:1512 167:2094 168:3792 169:779 170:5408 171:1059 172:4476 173:3426 174:904 175:1342 176:3756 177:4734 178:4295 179:2291 180:2737 181:4292 182:3758 183:2561 184:2071 185:21688 186:5369 187:4699 188:4380 189:4433 190:9728 191:1567 192:11408 193:9490 194:7827 195:5578 196:3263 197:3236 198:6261 199:8838 200:8206 201:6387 202:10492 203:10579 204:4640 205:3684 206:4404 207:3875 208:4261 209:5425 210:4723 211:2653 212:4904 213:3933 214:1038 215:53 216:7152 217:3361 218:1578 219:398 220:2196 221:1259 222:756 223:3099 End of report