IPv4 R&E Routing Table Report 21:10 GMT Mon 15 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: 1020589 Prefixes after maximum aggregation (per Origin AS): 393715 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504868 Number of IPv4 prefixes with a valid ROA: 605195 Number of IPv4 prefixes with an invalid ROA: 123 Number of IPv4 prefixes with no ROA: 415271 Total ASes present in the Internet Routing Table: 77639 Prefixes per ASN: 13.15 Origin-only ASes present in the Internet Routing Table: 66420 Origin ASes announcing only one prefix: 27130 Transit ASes present in the Internet Routing Table: 11219 Transit-only ASes present in the Internet Routing Table: 578 Paths with bogon ASNs present in the IPv4 Routing Table: 16 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: 968 Number of instances of unregistered ASNs: 1008 Number of 32-bit ASNs allocated by the RIRs: 48216 Number of 32-bit ASNs visible in the Routing Table: 39478 Prefixes from 32-bit ASNs in the Routing Table: 218703 Number of bogon 32-bit ASNs visible in the Routing Table: 90 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 737 Number of addresses announced to Internet: 3104481280 Equivalent to 185 /8s, 10 /16s and 160 /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: 333172 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275642 Total APNIC prefixes after maximum aggregation: 80771 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262679 Unique aggregates announced from the APNIC address blocks: 106256 APNIC Region origin ASes present in the Internet Routing Table: 14913 APNIC Prefixes per ASN: 17.61 APNIC Region origin ASes announcing only one prefix: 4565 APNIC Region transit ASes present in the Internet Routing Table: 2001 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: 10481 Number of APNIC addresses announced to Internet: 752872704 Equivalent to 44 /8s, 223 /16s and 237 /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: 299646 Total ARIN prefixes after maximum aggregation: 134848 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300025 Unique aggregates announced from the ARIN address blocks: 145880 ARIN Region origin ASes present in the Internet Routing Table: 19385 ARIN Prefixes per ASN: 15.48 ARIN Region origin ASes announcing only one prefix: 7082 ARIN Region transit ASes present in the Internet Routing Table: 1988 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: 5430 Number of ARIN addresses announced to Internet: 1342284288 Equivalent to 80 /8s, 1 /16s and 162 /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: 282668 Total RIPE prefixes after maximum aggregation: 139948 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283409 Unique aggregates announced from the RIPE address blocks: 183755 RIPE Region origin ASes present in the Internet Routing Table: 29115 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12072 RIPE Region transit ASes present in the Internet Routing Table: 4057 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: 12874 Number of RIPE addresses announced to Internet: 735123968 Equivalent to 43 /8s, 209 /16s and 26 /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: 125758 Total LACNIC prefixes after maximum aggregation: 30531 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121576 Unique aggregates announced from the LACNIC address blocks: 49747 LACNIC Region origin ASes present in the Internet Routing Table: 11326 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2675 LACNIC Region transit ASes present in the Internet Routing Table: 2573 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: 170542592 Equivalent to 10 /8s, 42 /16s and 70 /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: 35907 Total AfriNIC prefixes after maximum aggregation: 6963 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 52162 Unique aggregates announced from the AfriNIC address blocks: 18635 AfriNIC Region origin ASes present in the Internet Routing Table: 1999 AfriNIC Prefixes per ASN: 26.09 AfriNIC Region origin ASes announcing only one prefix: 736 AfriNIC Region transit ASes present in the Internet Routing Table: 391 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: 1361 Number of AfriNIC addresses announced to Internet: 103296768 Equivalent to 6 /8s, 40 /16s and 47 /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 13282 8729 118 CHINAMOBILE-CN China Mobile Communication 7545 6040 834 585 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4609 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4511 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4015 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3358 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3316 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 2946 864 509 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2532 159 569 LCS-AS-AP LARUS Limited, HK 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 13975 38433 5405 AMAZON-02, US 22773 4778 3116 369 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4686 311 946 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3316 4863 490 GOOGLE-CLOUD-PLATFORM, US 749 3207 54744 2458 DNIC-AS-00749, US 16625 2979 1279 2178 AKAMAI-AS, US 36352 2811 229 913 AS-COLOCROSSING, US 174 2674 8768 861 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 7299 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 3970 3394 123 AKAMAI-ASN1, NL 9009 3937 368 2252 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2547 181 1847 CDNEXT, GB 34984 2420 363 574 TELLCOM-AS, TR 8452 1687 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 12674 3287 588 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2514 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1377 2434 263 Claro NXT Telecomunicacoes Ltda, BR 11664 1363 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 357 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1023 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 1926 368 14 RAYA-AS, EG 36992 1685 1509 399 ETISALAT-MISR, EG 24863 1260 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 1048 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 566 82 3 KENET-AS, KE 15399 540 56 54 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 13975 38433 5405 AMAZON-02, US 9808 13282 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12674 3287 588 UNINET, MX 12479 7299 1711 149 UNI2-AS, ES 7545 6040 834 585 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4778 3116 369 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4686 311 946 CABLEONE, US 9498 4609 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4511 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 13282 13164 CHINAMOBILE-CN China Mobile Communications Grou 8151 12674 12086 UNINET, MX 12479 7299 7150 UNI2-AS, ES 7545 6040 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4511 4487 FPT-AS-AP FPT Telecom Company, VN 22773 4778 4409 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4609 4270 BBIL-AP BHARTI Airtel Ltd., IN 7552 4015 3987 VIETEL-AS-AP Viettel Group, VN 20940 3970 3847 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 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 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 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 23.141.0.0/24 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 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 /13:582 /14:1203 /15:2099 /16:13679 /17:8224 /18:13494 /19:24794 /20:44767 /21:52107 /22:113001 /23:105561 /24:640614 /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 6875 12674 UNINET, MX 12479 6229 7299 UNI2-AS, ES 11492 3531 4686 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3047 4778 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2416 13975 AMAZON-02, US 30036 2322 2665 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 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) ---------------------------------------------- 1:2442 2:1571 3:968 4:10 5:4957 6:187 7:6 8:1501 9:6 11:172 12:1229 13:541 14:2610 15:415 16:290 17:387 18:911 20:587 21:4 22:188 23:8136 24:2609 25:2 27:2824 29:19 31:3384 32:31 33:1 34:81 35:286 36:4603 37:4527 38:9964 39:1196 40:437 41:4452 42:2045 43:2855 44:414 45:19558 46:5102 47:394 49:2154 50:2055 51:593 52:1424 54:225 55:1097 56:11 57:305 58:2296 59:1333 60:1171 61:3056 62:3104 63:1746 64:5992 65:2115 66:5894 67:3246 68:1490 69:4206 70:1021 71:627 72:3064 74:2936 75:1520 76:597 77:2750 78:1927 79:1795 80:2304 81:2086 82:3873 83:1476 84:2016 85:3645 86:1105 87:2190 88:1343 89:4596 90:836 91:8422 92:2834 93:3016 94:4210 95:4563 96:1448 97:312 98:950 99:778 100:68 101:1320 102:4306 103:32200 104:5491 105:779 106:912 107:2807 108:1210 109:4252 110:2304 111:3935 112:2802 113:1894 114:2099 115:2304 116:2158 117:3131 118:3000 119:2057 120:2394 121:1511 122:2949 123:2295 124:1601 125:2909 126:125 128:1619 129:959 130:1543 131:2243 132:766 133:462 134:1633 135:538 136:1501 137:1421 138:3002 139:1601 140:1770 141:1555 142:2426 143:2114 144:1340 145:629 146:2191 147:2146 148:2796 149:2934 150:1314 151:2601 152:2251 153:858 154:9290 155:2271 156:4348 157:2237 158:1477 159:2721 160:3756 161:1988 162:4002 163:2332 164:1977 165:2625 166:1301 167:2174 168:3914 169:814 170:5429 171:1115 172:4548 173:3424 174:903 175:1337 176:3767 177:4740 178:4280 179:2291 180:2824 181:4320 182:3844 183:2654 184:2052 185:21690 186:5507 187:4769 188:4449 189:4489 190:9677 191:1520 192:11452 193:9508 194:7859 195:5622 196:3304 197:3190 198:6234 199:6109 200:8202 201:6397 202:10540 203:10581 204:4654 205:3752 206:4415 207:3946 208:4321 209:5524 210:4784 211:2680 212:4900 213:4031 214:1064 215:54 216:7098 217:3388 218:1602 219:404 220:2191 221:1288 222:776 223:3207 End of report