IPv4 R&E Routing Table Report 21:10 GMT Sat 27 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: 1024008 Prefixes after maximum aggregation (per Origin AS): 394143 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 505978 Number of IPv4 prefixes with a valid ROA: 609316 Number of IPv4 prefixes with an invalid ROA: 122 Number of IPv4 prefixes with no ROA: 414570 Total ASes present in the Internet Routing Table: 77675 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66472 Origin ASes announcing only one prefix: 27112 Transit ASes present in the Internet Routing Table: 11203 Transit-only ASes present in the Internet Routing Table: 567 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: 946 Number of instances of unregistered ASNs: 987 Number of 32-bit ASNs allocated by the RIRs: 48313 Number of 32-bit ASNs visible in the Routing Table: 39538 Prefixes from 32-bit ASNs in the Routing Table: 219568 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: 628 Number of addresses announced to Internet: 3105614592 Equivalent to 185 /8s, 27 /16s and 235 /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: 334107 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277464 Total APNIC prefixes after maximum aggregation: 80994 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 263803 Unique aggregates announced from the APNIC address blocks: 106492 APNIC Region origin ASes present in the Internet Routing Table: 14950 APNIC Prefixes per ASN: 17.65 APNIC Region origin ASes announcing only one prefix: 4555 APNIC Region transit ASes present in the Internet Routing Table: 2007 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: 10516 Number of APNIC addresses announced to Internet: 752987136 Equivalent to 44 /8s, 225 /16s and 172 /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: 300539 Total ARIN prefixes after maximum aggregation: 134991 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 300849 Unique aggregates announced from the ARIN address blocks: 145639 ARIN Region origin ASes present in the Internet Routing Table: 19384 ARIN Prefixes per ASN: 15.52 ARIN Region origin ASes announcing only one prefix: 7064 ARIN Region transit ASes present in the Internet Routing Table: 1983 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: 5425 Number of ARIN addresses announced to Internet: 1343176704 Equivalent to 80 /8s, 15 /16s and 64 /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: 283161 Total RIPE prefixes after maximum aggregation: 140061 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284133 Unique aggregates announced from the RIPE address blocks: 184170 RIPE Region origin ASes present in the Internet Routing Table: 29123 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12073 RIPE Region transit ASes present in the Internet Routing Table: 4052 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: 12899 Number of RIPE addresses announced to Internet: 735374592 Equivalent to 43 /8s, 212 /16s and 237 /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: 125843 Total LACNIC prefixes after maximum aggregation: 30574 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121617 Unique aggregates announced from the LACNIC address blocks: 49770 LACNIC Region origin ASes present in the Internet Routing Table: 11333 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2685 LACNIC Region transit ASes present in the Internet Routing Table: 2578 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: 9335 Number of LACNIC addresses announced to Internet: 170492416 Equivalent to 10 /8s, 41 /16s and 130 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + 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: 36055 Total AfriNIC prefixes after maximum aggregation: 6885 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 52977 Unique aggregates announced from the AfriNIC address blocks: 19405 AfriNIC Region origin ASes present in the Internet Routing Table: 2001 AfriNIC Prefixes per ASN: 26.48 AfriNIC Region origin ASes announcing only one prefix: 735 AfriNIC Region transit ASes present in the Internet Routing Table: 386 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: 1363 Number of AfriNIC addresses announced to Internet: 103268608 Equivalent to 6 /8s, 39 /16s and 193 /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 13369 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6035 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4643 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4553 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4043 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3728 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3387 831 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3323 1868 97 VNPT-AS-VN VNPT Corp, VN 17561 3179 200 637 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 14004 38462 5446 AMAZON-02, US 22773 4747 3113 375 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3689 1320 82 SHAW, CA 174 3403 8767 856 COGENT-174, US 396982 3317 4867 491 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 16625 2967 1275 2173 AKAMAI-AS, US 36352 2696 222 896 AS-COLOCROSSING, 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 7285 1711 149 UNI2-AS, ES 39891 4901 302 70 ALJAWWALSTC-AS, SA 9009 3959 369 2268 M247, RO 20940 3953 3394 123 AKAMAI-ASN1, NL 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2567 182 1865 CDNEXT, GB 34984 2419 371 574 TELLCOM-AS, TR 8452 1701 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 12644 3277 590 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2487 506 351 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 11664 1369 278 31 Techtel LMDS Comunicaciones Interactivas 28573 1369 2429 273 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1259 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 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 1940 402 13 RAYA-AS, EG 36992 1847 1538 336 ETISALAT-MISR, EG 24863 1262 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1099 1084 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1058 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 556 82 3 KENET-AS, KE 328608 545 52 159 Africa-on-Cloud-AS, ZA 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 14004 38462 5446 AMAZON-02, US 9808 13369 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12644 3277 590 UNINET, MX 12479 7285 1711 149 UNI2-AS, ES 7545 6035 834 581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 302 70 ALJAWWALSTC-AS, SA 22773 4747 3113 375 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 9498 4643 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4553 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 13369 13249 CHINAMOBILE-CN China Mobile Communications Grou 8151 12644 12054 UNINET, MX 12479 7285 7136 UNI2-AS, ES 7545 6035 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 4831 ALJAWWALSTC-AS, SA 18403 4553 4529 FPT-AS-AP FPT Telecom Company, VN 22773 4747 4372 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4643 4310 BBIL-AP BHARTI Airtel Ltd., IN 7552 4043 4014 VIETEL-AS-AP Viettel Group, VN 20940 3953 3830 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 12.17.5.0/24 174 COGENT-174, 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 23.140.216.0/24 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 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 /14:1205 /15:2095 /16:13682 /17:8225 /18:13501 /19:24824 /20:44828 /21:52136 /22:113237 /23:105962 /24:643267 /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 6849 12644 UNINET, MX 12479 6216 7285 UNI2-AS, ES 39891 3587 4901 ALJAWWALSTC-AS, SA 11492 3533 4688 CABLEONE, US 6327 3478 3689 SHAW, CA 22773 3052 4747 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2455 14004 AMAZON-02, US 30036 2321 2664 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 2:1550 3:978 4:10 5:4984 6:187 7:6 8:1502 9:12 11:172 12:1229 13:600 14:2626 15:417 16:274 17:383 18:914 20:588 21:4 22:188 23:8134 24:2610 25:2 27:2822 29:19 31:3393 32:31 33:1 34:81 35:286 36:4622 37:4519 38:10375 39:1218 40:437 41:4476 42:2087 43:2896 44:412 45:19589 46:5070 47:395 49:2156 50:2060 51:597 52:1257 54:225 55:1130 56:11 57:310 58:2296 59:1331 60:1171 61:3059 62:3108 63:1759 64:5999 65:2122 66:5928 67:3246 68:1501 69:4211 70:1025 71:625 72:3074 74:2944 75:1521 76:597 77:2745 78:1922 79:1795 80:2305 81:2082 82:3944 83:1476 84:2031 85:3649 86:1099 87:2206 88:1359 89:4617 90:836 91:8434 92:2839 93:3022 94:4262 95:4563 96:1452 97:312 98:958 99:782 100:68 101:1312 102:4327 103:32314 104:5468 105:782 106:920 107:2816 108:1213 109:4248 110:2302 111:3992 112:2815 113:1919 114:2093 115:2308 116:2156 117:3194 118:3003 119:2080 120:2425 121:1517 122:2953 123:2300 124:1606 125:2938 126:125 128:1616 129:961 130:1549 131:2266 132:765 133:462 134:1638 135:538 136:1502 137:1413 138:3018 139:1600 140:1776 141:1561 142:2435 143:2127 144:1385 145:626 146:2195 147:2141 148:2791 149:2914 150:1315 151:2590 152:2259 153:888 154:9539 155:2276 156:4763 157:2258 158:1477 159:2732 160:3747 161:1994 162:3988 163:2335 164:1962 165:2648 166:1305 167:2198 168:3905 169:813 170:5454 171:1120 172:4547 173:3418 174:901 175:1341 176:3782 177:4730 178:4323 179:2285 180:2831 181:4349 182:3872 183:2692 184:2049 185:21742 186:5525 187:4774 188:4520 189:4462 190:9674 191:1535 192:11440 193:9521 194:7864 195:5653 196:3266 197:3182 198:6227 199:6109 200:8204 201:6380 202:10565 203:10631 204:4671 205:3766 206:4439 207:3948 208:4371 209:5499 210:4778 211:2680 212:4923 213:4042 214:1066 215:54 216:7123 217:3472 218:1608 219:409 220:2185 221:1299 222:777 223:3228 End of report