IPv4 R&E Routing Table Report 21:10 GMT Sun 21 Dec, 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: 1022269 Prefixes after maximum aggregation (per Origin AS): 394045 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505808 Number of IPv4 prefixes with a valid ROA: 607848 Number of IPv4 prefixes with an invalid ROA: 119 Number of IPv4 prefixes with no ROA: 414302 Total ASes present in the Internet Routing Table: 77685 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66470 Origin ASes announcing only one prefix: 27149 Transit ASes present in the Internet Routing Table: 11215 Transit-only ASes present in the Internet Routing Table: 573 Paths with bogon ASNs present in the IPv4 Routing Table: 17 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 68 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 951 Number of instances of unregistered ASNs: 992 Number of 32-bit ASNs allocated by the RIRs: 48272 Number of 32-bit ASNs visible in the Routing Table: 39535 Prefixes from 32-bit ASNs in the Routing Table: 219271 Number of bogon 32-bit ASNs visible in the Routing Table: 92 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 721 Number of addresses announced to Internet: 3105065472 Equivalent to 185 /8s, 19 /16s and 138 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 333800 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 276350 Total APNIC prefixes after maximum aggregation: 80888 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 262949 Unique aggregates announced from the APNIC address blocks: 106453 APNIC Region origin ASes present in the Internet Routing Table: 14948 APNIC Prefixes per ASN: 17.59 APNIC Region origin ASes announcing only one prefix: 4577 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: 10513 Number of APNIC addresses announced to Internet: 753008384 Equivalent to 44 /8s, 225 /16s and 255 /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: 299988 Total ARIN prefixes after maximum aggregation: 134910 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300427 Unique aggregates announced from the ARIN address blocks: 145660 ARIN Region origin ASes present in the Internet Routing Table: 19392 ARIN Prefixes per ASN: 15.49 ARIN Region origin ASes announcing only one prefix: 7071 ARIN Region transit ASes present in the Internet Routing Table: 1994 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: 5433 Number of ARIN addresses announced to Internet: 1342949888 Equivalent to 80 /8s, 11 /16s and 202 /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: 283062 Total RIPE prefixes after maximum aggregation: 140083 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283802 Unique aggregates announced from the RIPE address blocks: 184008 RIPE Region origin ASes present in the Internet Routing Table: 29134 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12087 RIPE Region transit ASes present in the Internet Routing Table: 4046 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: 12897 Number of RIPE addresses announced to Internet: 735216128 Equivalent to 43 /8s, 210 /16s and 130 /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: 125797 Total LACNIC prefixes after maximum aggregation: 30574 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121595 Unique aggregates announced from the LACNIC address blocks: 49744 LACNIC Region origin ASes present in the Internet Routing Table: 11326 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2679 LACNIC Region transit ASes present in the Internet Routing Table: 2577 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9332 Number of LACNIC addresses announced to Internet: 170465280 Equivalent to 10 /8s, 41 /16s and 24 /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: 36121 Total AfriNIC prefixes after maximum aggregation: 6943 AfriNIC Deaggregation factor: 5.20 Prefixes being announced from the AfriNIC address blocks: 52774 Unique aggregates announced from the AfriNIC address blocks: 19356 AfriNIC Region origin ASes present in the Internet Routing Table: 1994 AfriNIC Prefixes per ASN: 26.47 AfriNIC Region origin ASes announcing only one prefix: 735 AfriNIC Region transit ASes present in the Internet Routing Table: 388 Average AfriNIC Region AS path length visible: 5.1 Max AfriNIC Region AS path length visible: 64 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1360 Number of AfriNIC addresses announced to Internet: 103074560 Equivalent to 6 /8s, 36 /16s and 203 /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 13329 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6039 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4627 542 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4314 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4041 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3728 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3373 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3323 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3011 189 613 LCS-AS-AP LARUS Limited, HK 24560 2955 865 496 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 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 14031 38461 5451 AMAZON-02, US 22773 4777 3115 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3689 1320 82 SHAW, CA 396982 3317 4867 491 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 16625 2968 1274 2175 AKAMAI-AS, US 36352 2816 229 913 AS-COLOCROSSING, US 174 2678 8767 856 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 7295 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3948 369 2257 M247, RO 20940 3944 3394 123 AKAMAI-ASN1, NL 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2562 182 1860 CDNEXT, GB 34984 2420 363 574 TELLCOM-AS, TR 8452 1693 1852 14 TE-AS TE-AS, EG 203020 1617 242 783 HOSTROYALE, IN 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 12635 3277 591 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2493 507 353 Mega Cable, S.A. de C.V., MX 11830 1990 369 65 Instituto Costarricense de Electricidad y 28573 1369 2429 273 Claro NXT Telecomunicacoes Ltda, BR 11664 1368 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1262 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 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 1927 368 14 RAYA-AS, EG 36992 1845 1537 336 ETISALAT-MISR, EG 24863 1262 389 16 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1083 1084 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1045 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 563 82 3 KENET-AS, KE 15399 560 58 60 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 14031 38461 5451 AMAZON-02, US 9808 13329 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12635 3277 591 UNINET, MX 12479 7295 1711 149 UNI2-AS, ES 7545 6039 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4777 3115 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 9498 4627 542 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4314 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 13329 13209 CHINAMOBILE-CN China Mobile Communications Grou 8151 12635 12044 UNINET, MX 12479 7295 7146 UNI2-AS, ES 7545 6039 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4777 4410 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4314 4290 FPT-AS-AP FPT Telecom Company, VN 9498 4627 4287 BBIL-AP BHARTI Airtel Ltd., IN 7552 4041 4012 VIETEL-AS-AP Viettel Group, VN 20940 3944 3821 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 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 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 7018 ATT-INTERNET4, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US 21861 UNALLOCATED 12.37.59.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 3257 GTT-BACKBONE GTT, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 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 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 /12:299 /13:581 /14:1204 /15:2097 /16:13683 /17:8222 /18:13500 /19:24803 /20:44780 /21:52135 /22:113203 /23:105815 /24:641782 /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 6840 12635 UNINET, MX 12479 6226 7295 UNI2-AS, ES 11492 3532 4687 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3689 SHAW, CA 22773 3048 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2453 14031 AMAZON-02, US 30036 2322 2665 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3434 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) ---------------------------------------------- 1:2435 2:1555 3:974 4:10 5:4979 6:186 7:6 8:1501 9:10 11:172 12:1228 13:607 14:2621 15:416 16:290 17:383 18:913 20:587 21:4 22:188 23:8134 24:2609 25:2 27:2826 29:19 31:3390 32:31 33:1 34:81 35:287 36:4610 37:4530 38:9980 39:1206 40:439 41:4519 42:1936 43:2866 44:411 45:19587 46:5112 47:394 49:2155 50:2061 51:597 52:1308 54:225 55:1117 56:11 57:305 58:2295 59:1327 60:1170 61:3058 62:3106 63:1742 64:6000 65:2124 66:5923 67:3246 68:1503 69:4203 70:1021 71:626 72:3070 74:2934 75:1512 76:597 77:2760 78:1921 79:1794 80:2300 81:2087 82:3892 83:1479 84:2030 85:3644 86:1097 87:2205 88:1358 89:4617 90:835 91:8433 92:2840 93:3022 94:4269 95:4559 96:1452 97:313 98:952 99:782 100:68 101:1313 102:4317 103:32254 104:5494 105:773 106:918 107:2815 108:1214 109:4242 110:2301 111:3977 112:2811 113:1892 114:2093 115:2312 116:2158 117:3149 118:2965 119:2063 120:2412 121:1513 122:2950 123:2296 124:1600 125:2925 126:125 128:1610 129:959 130:1551 131:2278 132:763 133:462 134:1638 135:539 136:1506 137:1419 138:3014 139:1610 140:1772 141:1561 142:2430 143:2108 144:1369 145:625 146:2186 147:2140 148:2785 149:2945 150:1313 151:2585 152:2262 153:866 154:9444 155:2272 156:4630 157:2246 158:1477 159:2731 160:3761 161:1996 162:3992 163:2336 164:1960 165:2623 166:1308 167:2195 168:3919 169:821 170:5447 171:1126 172:4551 173:3428 174:901 175:1342 176:3756 177:4739 178:4297 179:2286 180:2826 181:4344 182:3860 183:2650 184:2040 185:21727 186:5513 187:4765 188:4453 189:4457 190:9661 191:1535 192:11456 193:9510 194:7860 195:5625 196:3297 197:3180 198:6224 199:6110 200:8202 201:6382 202:10479 203:10598 204:4667 205:3763 206:4419 207:3952 208:4358 209:5520 210:4776 211:2683 212:4901 213:4046 214:1063 215:54 216:7131 217:3457 218:1606 219:409 220:2189 221:1293 222:776 223:3223 End of report