IPv4 R&E Routing Table Report 21:10 GMT Thu 20 Nov, 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: 1013502 Prefixes after maximum aggregation (per Origin AS): 392263 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 502202 Number of IPv4 prefixes with a valid ROA: 588975 Number of IPv4 prefixes with an invalid ROA: 126 Number of IPv4 prefixes with no ROA: 424399 Total ASes present in the Internet Routing Table: 77532 Prefixes per ASN: 13.07 Origin-only ASes present in the Internet Routing Table: 66360 Origin ASes announcing only one prefix: 27075 Transit ASes present in the Internet Routing Table: 11172 Transit-only ASes present in the Internet Routing Table: 567 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: 64 Max AS path prepend of ASN ( 37447) 59 Prefixes from unregistered ASNs in the Routing Table: 1013 Number of instances of unregistered ASNs: 1043 Number of 32-bit ASNs allocated by the RIRs: 48001 Number of 32-bit ASNs visible in the Routing Table: 39323 Prefixes from 32-bit ASNs in the Routing Table: 215625 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: 493 Number of addresses announced to Internet: 3099641344 Equivalent to 184 /8s, 192 /16s and 198 /24s Percentage of available address space announced: 83.7 Percentage of allocated address space announced: 83.7 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: 332224 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271444 Total APNIC prefixes after maximum aggregation: 80389 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 260780 Unique aggregates announced from the APNIC address blocks: 106251 APNIC Region origin ASes present in the Internet Routing Table: 14888 APNIC Prefixes per ASN: 17.52 APNIC Region origin ASes announcing only one prefix: 4539 APNIC Region transit ASes present in the Internet Routing Table: 2000 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: 10451 Number of APNIC addresses announced to Internet: 751805952 Equivalent to 44 /8s, 207 /16s and 166 /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: 298506 Total ARIN prefixes after maximum aggregation: 133978 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 298430 Unique aggregates announced from the ARIN address blocks: 145454 ARIN Region origin ASes present in the Internet Routing Table: 19377 ARIN Prefixes per ASN: 15.40 ARIN Region origin ASes announcing only one prefix: 7093 ARIN Region transit ASes present in the Internet Routing Table: 1988 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: 5412 Number of ARIN addresses announced to Internet: 1338216960 Equivalent to 79 /8s, 195 /16s and 146 /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: 281932 Total RIPE prefixes after maximum aggregation: 139913 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282374 Unique aggregates announced from the RIPE address blocks: 183067 RIPE Region origin ASes present in the Internet Routing Table: 29088 RIPE Prefixes per ASN: 9.71 RIPE Region origin ASes announcing only one prefix: 12059 RIPE Region transit ASes present in the Internet Routing Table: 4036 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 46 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12815 Number of RIPE addresses announced to Internet: 735484672 Equivalent to 43 /8s, 214 /16s and 155 /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: 125013 Total LACNIC prefixes after maximum aggregation: 30416 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121074 Unique aggregates announced from the LACNIC address blocks: 49560 LACNIC Region origin ASes present in the Internet Routing Table: 11286 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2656 LACNIC Region transit ASes present in the Internet Routing Table: 2560 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: 9294 Number of LACNIC addresses announced to Internet: 170737408 Equivalent to 10 /8s, 45 /16s and 63 /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: 35594 Total AfriNIC prefixes after maximum aggregation: 6892 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 50350 Unique aggregates announced from the AfriNIC address blocks: 17469 AfriNIC Region origin ASes present in the Internet Routing Table: 1991 AfriNIC Prefixes per ASN: 25.29 AfriNIC Region origin ASes announcing only one prefix: 728 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: 1351 Number of AfriNIC addresses announced to Internet: 103145728 Equivalent to 6 /8s, 37 /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 13391 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6067 833 595 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4552 540 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4442 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3982 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3719 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3312 1868 98 VNPT-AS-VN VNPT Corp, VN 56046 3244 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2928 856 506 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2489 273 1919 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 14164 37183 5372 AMAZON-02, US 11492 4789 317 804 CABLEONE, US 22773 4728 3112 369 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3300 4860 478 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 3002 1288 2185 AKAMAI-AS, US 36352 2849 231 917 AS-COLOCROSSING, US 30036 2663 368 307 MEDIACOM-ENTERPRISE-BUSINESS, 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 7294 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4020 380 2284 M247, RO 20940 3992 3395 126 AKAMAI-ASN1, NL 12389 3143 2317 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2503 177 1806 CDNEXT, GB 34984 2419 363 577 TELLCOM-AS, TR 8452 1699 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1487 169 854 HOSTROYALE, IN 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 12564 3305 579 UNINET, MX 10620 3457 463 1100 Telmex Colombia S.A., CO 13999 2503 511 346 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1350 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1329 278 31 Techtel LMDS Comunicaciones Interactivas 6147 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1061 70 367 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1016 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 1985 630 32 RAYA-AS, EG 36992 1680 1509 397 ETISALAT-MISR, EG 24863 1264 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1104 523 34 Vodafone-, EG 37069 1085 1100 11 MOBINIL, EG 29571 1071 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 564 82 3 KENET-AS, KE 15399 546 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 14164 37183 5372 AMAZON-02, US 9808 13391 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12564 3305 579 UNINET, MX 12479 7294 1711 149 UNI2-AS, ES 7545 6067 833 595 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4789 317 804 CABLEONE, US 22773 4728 3112 369 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4552 540 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4442 347 24 FPT-AS-AP FPT Telecom Company, VN 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 13391 13274 CHINAMOBILE-CN China Mobile Communications Grou 8151 12564 11985 UNINET, MX 12479 7294 7145 UNI2-AS, ES 7545 6067 5472 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4442 4418 FPT-AS-AP FPT Telecom Company, VN 22773 4728 4359 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4552 4219 BBIL-AP BHARTI Airtel Ltd., IN 11492 4789 3985 CABLEONE, US 7552 3982 3954 VIETEL-AS-AP Viettel Group, VN 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 3737 AS-PTD, 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 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 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 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 23.137.224.0/24 Origin: 29802 HVC-AS, US 23.137.224.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 23.137.225.0/24 Origin: 29802 HVC-AS, US 23.137.225.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 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 /11:94 /12:297 /13:582 /14:1200 /15:2097 /16:13680 /17:8230 /18:13490 /19:24747 /20:44460 /21:52036 /22:113004 /23:105092 /24:634421 /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 6764 12564 UNINET, MX 12479 6236 7294 UNI2-AS, ES 11492 3602 4789 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3023 4728 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2424 14164 AMAZON-02, US 30036 2318 2663 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2212 3457 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) ---------------------------------------------- 1:2434 2:1572 3:962 4:10 5:4977 6:189 7:6 8:1507 9:6 11:172 12:1234 13:559 14:2601 15:410 16:303 17:387 18:909 20:584 21:4 22:188 23:8106 24:2627 25:2 27:2802 29:19 31:3373 32:31 33:1 34:81 35:285 36:4542 37:4527 38:9281 39:1173 40:458 41:4425 42:1984 43:2820 44:404 45:19182 46:5095 47:374 49:2149 50:2054 51:593 52:1566 54:290 55:1106 56:11 57:291 58:2295 59:1308 60:1189 61:2995 62:3091 63:1740 64:5934 65:2117 66:5904 67:3250 68:1488 69:4182 70:1027 71:631 72:2987 74:2910 75:1523 76:596 77:2761 78:1907 79:1779 80:2284 81:2118 82:3752 83:1468 84:2026 85:3577 86:1109 87:2150 88:1334 89:4601 90:837 91:8399 92:2836 93:2994 94:4220 95:4556 96:1477 97:310 98:951 99:765 100:68 101:1196 102:4302 103:32222 104:5479 105:798 106:915 107:2796 108:1193 109:4191 110:2274 111:3866 112:2748 113:1894 114:2097 115:2282 116:2108 117:3093 118:3070 119:2003 120:2344 121:1515 122:2933 123:2279 124:1596 125:2899 126:125 128:1613 129:965 130:1513 131:2259 132:785 133:462 134:1635 135:384 136:1485 137:1335 138:2838 139:1603 140:1737 141:1554 142:2271 143:2121 144:1310 145:632 146:2183 147:2128 148:2791 149:2847 150:1289 151:2641 152:2282 153:668 154:8258 155:2258 156:3812 157:2206 158:1425 159:2673 160:3783 161:1995 162:3993 163:2322 164:1955 165:2583 166:1295 167:2152 168:3839 169:791 170:5414 171:1110 172:4495 173:3422 174:912 175:1347 176:3741 177:4671 178:4313 179:2259 180:2751 181:4318 182:3807 183:2542 184:2067 185:21707 186:5440 187:4727 188:4401 189:4442 190:9678 191:1533 192:11452 193:9526 194:7837 195:5589 196:3249 197:3240 198:6237 199:6098 200:8201 201:6368 202:10420 203:10580 204:4635 205:3716 206:4396 207:3894 208:4269 209:5419 210:4775 211:2651 212:4876 213:4012 214:1044 215:52 216:7131 217:3347 218:1575 219:400 220:2192 221:1271 222:764 223:3107 End of report