IPv4 R&E Routing Table Report 21:10 GMT Fri 19 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: 1022170 Prefixes after maximum aggregation (per Origin AS): 394075 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505643 Number of IPv4 prefixes with a valid ROA: 607095 Number of IPv4 prefixes with an invalid ROA: 118 Number of IPv4 prefixes with no ROA: 414957 Total ASes present in the Internet Routing Table: 77696 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66477 Origin ASes announcing only one prefix: 27153 Transit ASes present in the Internet Routing Table: 11219 Transit-only ASes present in the Internet Routing Table: 576 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: 954 Number of instances of unregistered ASNs: 994 Number of 32-bit ASNs allocated by the RIRs: 48251 Number of 32-bit ASNs visible in the Routing Table: 39529 Prefixes from 32-bit ASNs in the Routing Table: 219132 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: 726 Number of addresses announced to Internet: 3105163776 Equivalent to 185 /8s, 21 /16s and 10 /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: 333844 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 276206 Total APNIC prefixes after maximum aggregation: 80856 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 263006 Unique aggregates announced from the APNIC address blocks: 106439 APNIC Region origin ASes present in the Internet Routing Table: 14944 APNIC Prefixes per ASN: 17.60 APNIC Region origin ASes announcing only one prefix: 4576 APNIC Region transit ASes present in the Internet Routing Table: 2004 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: 10509 Number of APNIC addresses announced to Internet: 753011968 Equivalent to 44 /8s, 226 /16s and 13 /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: 299964 Total ARIN prefixes after maximum aggregation: 134883 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300387 Unique aggregates announced from the ARIN address blocks: 145656 ARIN Region origin ASes present in the Internet Routing Table: 19391 ARIN Prefixes per ASN: 15.49 ARIN Region origin ASes announcing only one prefix: 7074 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: 5429 Number of ARIN addresses announced to Internet: 1342949376 Equivalent to 80 /8s, 11 /16s and 200 /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: 283055 Total RIPE prefixes after maximum aggregation: 140102 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283777 Unique aggregates announced from the RIPE address blocks: 183995 RIPE Region origin ASes present in the Internet Routing Table: 29140 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12089 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: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12899 Number of RIPE addresses announced to Internet: 735212800 Equivalent to 43 /8s, 210 /16s and 117 /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: 125889 Total LACNIC prefixes after maximum aggregation: 30562 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121707 Unique aggregates announced from the LACNIC address blocks: 49763 LACNIC Region origin ASes present in the Internet Routing Table: 11326 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2678 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: 9329 Number of LACNIC addresses announced to Internet: 170535936 Equivalent to 10 /8s, 42 /16s and 44 /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: 36102 Total AfriNIC prefixes after maximum aggregation: 7024 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 52566 Unique aggregates announced from the AfriNIC address blocks: 19199 AfriNIC Region origin ASes present in the Internet Routing Table: 2000 AfriNIC Prefixes per ASN: 26.28 AfriNIC Region origin ASes announcing only one prefix: 736 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: 1363 Number of AfriNIC addresses announced to Internet: 103097600 Equivalent to 6 /8s, 37 /16s and 37 /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 13331 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6039 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4626 542 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4439 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4025 1332 28 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 24560 2955 865 496 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2850 179 617 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 14056 38460 5453 AMAZON-02, US 22773 4778 3115 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3317 4867 491 GOOGLE-CLOUD-PLATFORM, US 749 3142 54729 2393 DNIC-AS-00749, US 16625 2982 1280 2178 AKAMAI-AS, US 36352 2816 229 913 AS-COLOCROSSING, US 174 2681 8767 858 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 20940 3953 3394 123 AKAMAI-ASN1, NL 9009 3949 369 2258 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2563 182 1861 CDNEXT, GB 34984 2420 363 574 TELLCOM-AS, TR 8452 1688 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 12688 3285 587 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2493 507 353 Mega Cable, S.A. de C.V., MX 11830 1992 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 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1025 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 1824 1531 424 ETISALAT-MISR, EG 24863 1261 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 1046 520 31 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 557 82 3 KENET-AS, KE 15399 541 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 14056 38460 5453 AMAZON-02, US 9808 13331 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12688 3285 587 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 4778 3115 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4687 311 949 CABLEONE, US 9498 4626 542 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4439 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 13331 13211 CHINAMOBILE-CN China Mobile Communications Grou 8151 12688 12101 UNINET, MX 12479 7295 7146 UNI2-AS, ES 7545 6039 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4439 4415 FPT-AS-AP FPT Telecom Company, VN 22773 4778 4411 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4626 4290 BBIL-AP BHARTI Airtel Ltd., IN 7552 4025 3997 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 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 /13:581 /14:1204 /15:2099 /16:13683 /17:8223 /18:13502 /19:24814 /20:44795 /21:52146 /22:113193 /23:105809 /24:641657 /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 6882 12688 UNINET, MX 12479 6226 7295 UNI2-AS, ES 11492 3532 4687 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3049 4778 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2453 14056 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) ---------------------------------------------- 1:2446 2:1555 3:979 4:10 5:4972 6:187 7:6 8:1502 9:10 11:172 12:1229 13:605 14:2612 15:416 16:290 17:387 18:912 20:587 21:4 22:188 23:8139 24:2609 25:2 27:2825 29:19 31:3393 32:31 33:1 34:81 35:286 36:4612 37:4529 38:9963 39:1207 40:440 41:4506 42:1976 43:2864 44:414 45:19563 46:5108 47:394 49:2158 50:2060 51:597 52:1310 54:228 55:1112 56:11 57:305 58:2295 59:1325 60:1170 61:3058 62:3105 63:1740 64:6001 65:2124 66:5922 67:3245 68:1504 69:4202 70:1021 71:626 72:3068 74:2936 75:1512 76:597 77:2759 78:1925 79:1794 80:2300 81:2083 82:3895 83:1477 84:2022 85:3640 86:1100 87:2205 88:1357 89:4619 90:834 91:8436 92:2838 93:3023 94:4264 95:4559 96:1452 97:312 98:952 99:782 100:68 101:1312 102:4327 103:32245 104:5493 105:774 106:918 107:2815 108:1213 109:4241 110:2302 111:3976 112:2811 113:1908 114:2091 115:2311 116:2158 117:3149 118:2999 119:2065 120:2412 121:1513 122:2939 123:2295 124:1599 125:2916 126:125 128:1614 129:958 130:1555 131:2275 132:768 133:462 134:1639 135:538 136:1504 137:1414 138:3009 139:1610 140:1773 141:1566 142:2430 143:2104 144:1370 145:625 146:2191 147:2139 148:2786 149:2940 150:1314 151:2590 152:2261 153:866 154:9339 155:2273 156:4548 157:2253 158:1477 159:2724 160:3760 161:1997 162:3991 163:2336 164:1959 165:2623 166:1307 167:2192 168:3925 169:823 170:5443 171:1117 172:4552 173:3426 174:901 175:1343 176:3757 177:4739 178:4294 179:2287 180:2826 181:4342 182:3858 183:2665 184:2040 185:21723 186:5510 187:4769 188:4458 189:4488 190:9682 191:1537 192:11445 193:9514 194:7860 195:5626 196:3296 197:3184 198:6223 199:6111 200:8210 201:6397 202:10484 203:10592 204:4663 205:3747 206:4423 207:3951 208:4357 209:5520 210:4774 211:2683 212:4906 213:4042 214:1065 215:54 216:7127 217:3459 218:1606 219:409 220:2188 221:1293 222:775 223:3222 End of report