IPv4 R&E Routing Table Report 21:10 GMT Tue 16 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: 1021161 Prefixes after maximum aggregation (per Origin AS): 393967 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505286 Number of IPv4 prefixes with a valid ROA: 605749 Number of IPv4 prefixes with an invalid ROA: 121 Number of IPv4 prefixes with no ROA: 415291 Total ASes present in the Internet Routing Table: 77667 Prefixes per ASN: 13.15 Origin-only ASes present in the Internet Routing Table: 66437 Origin ASes announcing only one prefix: 27141 Transit ASes present in the Internet Routing Table: 11230 Transit-only ASes present in the Internet Routing Table: 574 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: 964 Number of instances of unregistered ASNs: 1004 Number of 32-bit ASNs allocated by the RIRs: 48220 Number of 32-bit ASNs visible in the Routing Table: 39498 Prefixes from 32-bit ASNs in the Routing Table: 218907 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: 749 Number of addresses announced to Internet: 3104764672 Equivalent to 185 /8s, 14 /16s and 243 /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: 333208 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275990 Total APNIC prefixes after maximum aggregation: 80848 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262885 Unique aggregates announced from the APNIC address blocks: 106317 APNIC Region origin ASes present in the Internet Routing Table: 14930 APNIC Prefixes per ASN: 17.61 APNIC Region origin ASes announcing only one prefix: 4572 APNIC Region transit ASes present in the Internet Routing Table: 2003 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: 10497 Number of APNIC addresses announced to Internet: 752892416 Equivalent to 44 /8s, 224 /16s and 58 /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: 299728 Total ARIN prefixes after maximum aggregation: 134956 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300117 Unique aggregates announced from the ARIN address blocks: 145952 ARIN Region origin ASes present in the Internet Routing Table: 19399 ARIN Prefixes per ASN: 15.47 ARIN Region origin ASes announcing only one prefix: 7086 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: 5434 Number of ARIN addresses announced to Internet: 1342510592 Equivalent to 80 /8s, 5 /16s and 22 /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: 282753 Total RIPE prefixes after maximum aggregation: 140009 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283471 Unique aggregates announced from the RIPE address blocks: 183851 RIPE Region origin ASes present in the Internet Routing Table: 29119 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12079 RIPE Region transit ASes present in the Internet Routing Table: 4061 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: 12877 Number of RIPE addresses announced to Internet: 735201280 Equivalent to 43 /8s, 210 /16s and 72 /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: 125892 Total LACNIC prefixes after maximum aggregation: 30544 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121702 Unique aggregates announced from the LACNIC address blocks: 49766 LACNIC Region origin ASes present in the Internet Routing Table: 11323 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2669 LACNIC Region transit ASes present in the Internet Routing Table: 2575 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: 9328 Number of LACNIC addresses announced to Internet: 170461696 Equivalent to 10 /8s, 41 /16s and 10 /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: 35834 Total AfriNIC prefixes after maximum aggregation: 6960 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 52236 Unique aggregates announced from the AfriNIC address blocks: 18796 AfriNIC Region origin ASes present in the Internet Routing Table: 1998 AfriNIC Prefixes per ASN: 26.14 AfriNIC Region origin ASes announcing only one prefix: 735 AfriNIC Region transit ASes present in the Internet Routing Table: 391 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: 1362 Number of AfriNIC addresses announced to Internet: 103335168 Equivalent to 6 /8s, 40 /16s and 197 /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 13305 8729 118 CHINAMOBILE-CN China Mobile Communication 7545 6040 834 584 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4611 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4530 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4013 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 2954 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2712 170 597 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 13972 38440 5436 AMAZON-02, US 22773 4769 3115 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 945 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3314 4863 490 GOOGLE-CLOUD-PLATFORM, US 749 3207 54744 2458 DNIC-AS-00749, US 16625 2979 1279 2178 AKAMAI-AS, US 36352 2812 229 912 AS-COLOCROSSING, US 174 2693 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 7298 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 3969 3394 123 AKAMAI-ASN1, NL 9009 3937 368 2252 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2559 182 1858 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 12675 3283 587 UNINET, MX 10620 3434 457 1108 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 1376 2432 266 Claro NXT Telecomunicacoes Ltda, BR 11664 1365 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 67 359 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 1926 368 14 RAYA-AS, EG 36992 1692 1509 402 ETISALAT-MISR, EG 24863 1259 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 559 82 3 KENET-AS, KE 15399 542 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 13972 38440 5436 AMAZON-02, US 9808 13305 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12675 3283 587 UNINET, MX 12479 7298 1711 149 UNI2-AS, ES 7545 6040 834 584 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4769 3115 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 945 CABLEONE, US 9498 4611 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4530 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 13305 13187 CHINAMOBILE-CN China Mobile Communications Grou 8151 12675 12088 UNINET, MX 12479 7298 7149 UNI2-AS, ES 7545 6040 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4530 4506 FPT-AS-AP FPT Telecom Company, VN 22773 4769 4402 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4611 4272 BBIL-AP BHARTI Airtel Ltd., IN 7552 4013 3985 VIETEL-AS-AP Viettel Group, VN 20940 3969 3846 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 23.140.216.0/24 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 /13:582 /14:1203 /15:2100 /16:13679 /17:8222 /18:13494 /19:24786 /20:44757 /21:52147 /22:113038 /23:105691 /24:640998 /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 6876 12675 UNINET, MX 12479 6228 7298 UNI2-AS, ES 11492 3533 4688 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3048 4769 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2439 13972 AMAZON-02, US 30036 2318 2661 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) ---------------------------------------------- 1:2444 2:1564 3:968 4:10 5:4959 6:187 7:6 8:1500 9:6 11:172 12:1230 13:591 14:2612 15:415 16:290 17:387 18:910 20:586 21:4 22:188 23:8144 24:2609 25:2 27:2822 29:19 31:3386 32:31 33:1 34:81 35:286 36:4606 37:4533 38:9979 39:1200 40:439 41:4451 42:2066 43:2856 44:412 45:19560 46:5104 47:393 49:2156 50:2056 51:593 52:1327 54:226 55:1121 56:11 57:305 58:2295 59:1334 60:1171 61:3056 62:3105 63:1742 64:5992 65:2117 66:5873 67:3243 68:1493 69:4205 70:1013 71:627 72:3064 74:2936 75:1520 76:595 77:2754 78:1925 79:1793 80:2306 81:2079 82:3883 83:1473 84:2019 85:3647 86:1106 87:2201 88:1357 89:4596 90:836 91:8426 92:2836 93:3012 94:4204 95:4567 96:1451 97:312 98:949 99:781 100:68 101:1321 102:4306 103:32224 104:5485 105:776 106:918 107:2807 108:1211 109:4256 110:2303 111:3946 112:2802 113:1902 114:2099 115:2313 116:2154 117:3141 118:3004 119:2056 120:2410 121:1509 122:2950 123:2295 124:1600 125:2908 126:125 128:1618 129:958 130:1544 131:2276 132:768 133:462 134:1634 135:538 136:1503 137:1420 138:3006 139:1600 140:1771 141:1553 142:2429 143:2116 144:1353 145:629 146:2192 147:2146 148:2795 149:2937 150:1312 151:2593 152:2251 153:863 154:9276 155:2274 156:4520 157:2240 158:1474 159:2725 160:3757 161:2002 162:3986 163:2338 164:1976 165:2630 166:1304 167:2191 168:3930 169:817 170:5439 171:1115 172:4542 173:3420 174:902 175:1343 176:3767 177:4734 178:4279 179:2289 180:2824 181:4334 182:3849 183:2663 184:2052 185:21695 186:5475 187:4773 188:4448 189:4487 190:9692 191:1533 192:11455 193:9510 194:7852 195:5621 196:3280 197:3167 198:6233 199:6104 200:8214 201:6400 202:10542 203:10581 204:4650 205:3753 206:4420 207:3942 208:4342 209:5518 210:4784 211:2680 212:4895 213:4025 214:1066 215:54 216:7091 217:3396 218:1603 219:405 220:2188 221:1288 222:774 223:3216 End of report