IPv4 R&E Routing Table Report 21:10 GMT Wed 10 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: 1020220 Prefixes after maximum aggregation (per Origin AS): 393575 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504668 Number of IPv4 prefixes with a valid ROA: 602474 Number of IPv4 prefixes with an invalid ROA: 122 Number of IPv4 prefixes with no ROA: 417624 Total ASes present in the Internet Routing Table: 77614 Prefixes per ASN: 13.14 Origin-only ASes present in the Internet Routing Table: 66421 Origin ASes announcing only one prefix: 27138 Transit ASes present in the Internet Routing Table: 11193 Transit-only ASes present in the Internet Routing Table: 576 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: 976 Number of instances of unregistered ASNs: 1017 Number of 32-bit ASNs allocated by the RIRs: 48165 Number of 32-bit ASNs visible in the Routing Table: 39431 Prefixes from 32-bit ASNs in the Routing Table: 218253 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: 463 Number of addresses announced to Internet: 3104186368 Equivalent to 185 /8s, 6 /16s and 32 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 333261 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275124 Total APNIC prefixes after maximum aggregation: 80636 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262305 Unique aggregates announced from the APNIC address blocks: 106248 APNIC Region origin ASes present in the Internet Routing Table: 14904 APNIC Prefixes per ASN: 17.60 APNIC Region origin ASes announcing only one prefix: 4554 APNIC Region transit ASes present in the Internet Routing Table: 1991 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: 10470 Number of APNIC addresses announced to Internet: 752915968 Equivalent to 44 /8s, 224 /16s and 150 /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: 299932 Total ARIN prefixes after maximum aggregation: 134870 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299980 Unique aggregates announced from the ARIN address blocks: 145728 ARIN Region origin ASes present in the Internet Routing Table: 19374 ARIN Prefixes per ASN: 15.48 ARIN Region origin ASes announcing only one prefix: 7090 ARIN Region transit ASes present in the Internet Routing Table: 1982 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: 5427 Number of ARIN addresses announced to Internet: 1342230784 Equivalent to 80 /8s, 0 /16s and 209 /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: 282560 Total RIPE prefixes after maximum aggregation: 139928 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283696 Unique aggregates announced from the RIPE address blocks: 183933 RIPE Region origin ASes present in the Internet Routing Table: 29126 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12079 RIPE Region transit ASes present in the Internet Routing Table: 4065 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 45 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12866 Number of RIPE addresses announced to Internet: 734728704 Equivalent to 43 /8s, 203 /16s and 18 /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: 125699 Total LACNIC prefixes after maximum aggregation: 30514 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121634 Unique aggregates announced from the LACNIC address blocks: 49757 LACNIC Region origin ASes present in the Internet Routing Table: 11307 LACNIC Prefixes per ASN: 10.76 LACNIC Region origin ASes announcing only one prefix: 2674 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: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9308 Number of LACNIC addresses announced to Internet: 170689792 Equivalent to 10 /8s, 44 /16s and 133 /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: 35929 Total AfriNIC prefixes after maximum aggregation: 6957 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 52141 Unique aggregates announced from the AfriNIC address blocks: 18602 AfriNIC Region origin ASes present in the Internet Routing Table: 1998 AfriNIC Prefixes per ASN: 26.10 AfriNIC Region origin ASes announcing only one prefix: 741 AfriNIC Region transit ASes present in the Internet Routing Table: 386 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: 1360 Number of AfriNIC addresses announced to Internet: 103349248 Equivalent to 6 /8s, 40 /16s and 252 /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 13283 8729 118 CHINAMOBILE-CN China Mobile Communication 7545 6036 834 585 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4604 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4444 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4015 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3722 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3336 827 181 CMNET-JIANGSU-AP China Mobile communicati 45899 3315 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 2952 865 498 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2515 275 1936 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 14181 38434 5389 AMAZON-02, US 22773 4780 3115 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 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 3208 54760 2459 DNIC-AS-00749, US 16625 2997 1288 2187 AKAMAI-AS, US 36352 2813 229 913 AS-COLOCROSSING, US 174 2668 8768 855 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 7283 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 3968 3394 123 AKAMAI-ASN1, NL 9009 3967 371 2270 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2542 181 1842 CDNEXT, GB 34984 2424 363 576 TELLCOM-AS, TR 8452 1681 1852 14 TE-AS TE-AS, EG 203020 1615 242 782 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 12668 3295 584 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2511 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1373 2431 267 Claro NXT Telecomunicacoes Ltda, BR 11664 1358 278 31 Techtel LMDS Comunicaciones Interactivas 3816 1345 779 209 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1264 371 22 Telefonica del Peru S.A.A., PE 22884 1058 70 360 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1019 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 1258 389 20 LINKdotNET-AS, EG 36903 1249 554 96 MT-MPLS, MA 37069 1093 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1047 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 565 82 3 KENET-AS, KE 15399 545 57 58 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 14181 38434 5389 AMAZON-02, US 9808 13283 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12668 3295 584 UNINET, MX 12479 7283 1711 149 UNI2-AS, ES 7545 6036 834 585 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4780 3115 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4604 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4444 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 13283 13165 CHINAMOBILE-CN China Mobile Communications Grou 8151 12668 12084 UNINET, MX 12479 7283 7134 UNI2-AS, ES 7545 6036 5451 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4444 4420 FPT-AS-AP FPT Telecom Company, VN 22773 4780 4412 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4604 4268 BBIL-AP BHARTI Airtel Ltd., IN 7552 4015 3987 VIETEL-AS-AP Viettel Group, VN 20940 3968 3845 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 23.135.216.0/24 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: 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 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 /15:2094 /16:13681 /17:8227 /18:13488 /19:24808 /20:44767 /21:52106 /22:112991 /23:105489 /24:640320 /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 6863 12668 UNINET, MX 12479 6213 7283 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3050 4780 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2421 14181 AMAZON-02, US 30036 2319 2662 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 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 2:1568 3:967 4:10 5:4952 6:190 7:6 8:1500 9:6 11:172 12:1230 13:537 14:2602 15:413 16:303 17:388 18:910 20:587 21:4 22:188 23:8134 24:2609 25:2 27:2817 29:19 31:3387 32:31 33:1 34:81 35:287 36:4598 37:4554 38:9919 39:1194 40:432 41:4455 42:2007 43:2852 44:415 45:19548 46:5104 47:387 49:2149 50:2060 51:597 52:1567 54:289 55:1105 56:11 57:305 58:2294 59:1328 60:1167 61:3058 62:3104 63:1747 64:5986 65:2119 66:5887 67:3248 68:1494 69:4203 70:1020 71:627 72:3047 74:2937 75:1521 76:596 77:2778 78:1921 79:1789 80:2299 81:2081 82:3847 83:1469 84:2033 85:3631 86:1106 87:2171 88:1348 89:4557 90:834 91:8427 92:2841 93:3021 94:4229 95:4554 96:1464 97:312 98:951 99:778 100:68 101:1327 102:4327 103:32233 104:5504 105:797 106:915 107:2812 108:1206 109:4245 110:2304 111:3913 112:2784 113:1885 114:2101 115:2306 116:2157 117:3133 118:2998 119:2057 120:2382 121:1510 122:2949 123:2288 124:1602 125:2905 126:125 128:1625 129:964 130:1539 131:2237 132:771 133:462 134:1631 135:525 136:1501 137:1430 138:2983 139:1606 140:1779 141:1552 142:2423 143:2123 144:1372 145:631 146:2194 147:2143 148:2791 149:2880 150:1311 151:2603 152:2275 153:856 154:9248 155:2279 156:4365 157:2240 158:1469 159:2707 160:3741 161:1999 162:4009 163:2332 164:1961 165:2624 166:1302 167:2154 168:3929 169:811 170:5436 171:1116 172:4536 173:3432 174:908 175:1343 176:3769 177:4701 178:4307 179:2302 180:2834 181:4333 182:3839 183:2625 184:2069 185:21710 186:5522 187:4769 188:4442 189:4481 190:9685 191:1527 192:11457 193:9516 194:7853 195:5623 196:3288 197:3191 198:6219 199:6099 200:8209 201:6389 202:10478 203:10575 204:4649 205:3733 206:4419 207:3922 208:4292 209:5431 210:4751 211:2678 212:4902 213:4029 214:1057 215:53 216:7086 217:3387 218:1596 219:404 220:2191 221:1288 222:777 223:3176 End of report