IPv4 R&E Routing Table Report 21:10 GMT Sat 20 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: 1022164 Prefixes after maximum aggregation (per Origin AS): 394171 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505600 Number of IPv4 prefixes with a valid ROA: 607007 Number of IPv4 prefixes with an invalid ROA: 119 Number of IPv4 prefixes with no ROA: 415038 Total ASes present in the Internet Routing Table: 77684 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66456 Origin ASes announcing only one prefix: 27151 Transit ASes present in the Internet Routing Table: 11228 Transit-only ASes present in the Internet Routing Table: 573 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: 950 Number of instances of unregistered ASNs: 991 Number of 32-bit ASNs allocated by the RIRs: 48255 Number of 32-bit ASNs visible in the Routing Table: 39525 Prefixes from 32-bit ASNs in the Routing Table: 219185 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: 726 Number of addresses announced to Internet: 3104986368 Equivalent to 185 /8s, 18 /16s and 85 /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: 333761 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 276216 Total APNIC prefixes after maximum aggregation: 80852 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 262945 Unique aggregates announced from the APNIC address blocks: 106421 APNIC Region origin ASes present in the Internet Routing Table: 14939 APNIC Prefixes per ASN: 17.60 APNIC Region origin ASes announcing only one prefix: 4575 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: 10503 Number of APNIC addresses announced to Internet: 752939008 Equivalent to 44 /8s, 224 /16s and 240 /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: 299998 Total ARIN prefixes after maximum aggregation: 134918 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300435 Unique aggregates announced from the ARIN address blocks: 145651 ARIN Region origin ASes present in the Internet Routing Table: 19393 ARIN Prefixes per ASN: 15.49 ARIN Region origin ASes announcing only one prefix: 7073 ARIN Region transit ASes present in the Internet Routing Table: 1997 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: 1342947584 Equivalent to 80 /8s, 11 /16s and 193 /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: 283020 Total RIPE prefixes after maximum aggregation: 140096 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283763 Unique aggregates announced from the RIPE address blocks: 183989 RIPE Region origin ASes present in the Internet Routing Table: 29137 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: 4048 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: 12898 Number of RIPE addresses announced to Internet: 735213312 Equivalent to 43 /8s, 210 /16s and 119 /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: 125903 Total LACNIC prefixes after maximum aggregation: 30627 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121695 Unique aggregates announced from the LACNIC address blocks: 49735 LACNIC Region origin ASes present in the Internet Routing Table: 11328 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2680 LACNIC Region transit ASes present in the Internet Routing Table: 2582 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: 9334 Number of LACNIC addresses announced to Internet: 170460416 Equivalent to 10 /8s, 41 /16s and 5 /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: 36077 Total AfriNIC prefixes after maximum aggregation: 7033 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 52599 Unique aggregates announced from the AfriNIC address blocks: 19213 AfriNIC Region origin ASes present in the Internet Routing Table: 1996 AfriNIC Prefixes per ASN: 26.35 AfriNIC Region origin ASes announcing only one prefix: 734 AfriNIC Region transit ASes present in the Internet Routing Table: 388 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: 103069184 Equivalent to 6 /8s, 36 /16s and 182 /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 13330 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6039 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4626 542 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4329 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4041 1332 29 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 2878 181 610 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 14052 38462 5456 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 3143 54729 2394 DNIC-AS-00749, US 16625 2982 1280 2178 AKAMAI-AS, US 36352 2816 229 913 AS-COLOCROSSING, US 174 2681 8767 859 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 7294 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 3953 3394 123 AKAMAI-ASN1, NL 9009 3948 369 2257 M247, RO 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2562 182 1860 CDNEXT, GB 34984 2420 363 574 TELLCOM-AS, TR 8452 1689 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 12636 3277 590 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 1261 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 563 82 3 KENET-AS, KE 15399 560 58 60 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 14052 38462 5456 AMAZON-02, US 9808 13330 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12636 3277 590 UNINET, MX 12479 7294 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 542 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4329 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 13330 13210 CHINAMOBILE-CN China Mobile Communications Grou 8151 12636 12046 UNINET, MX 12479 7294 7145 UNI2-AS, ES 7545 6039 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4778 4411 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4329 4305 FPT-AS-AP FPT Telecom Company, VN 9498 4626 4286 BBIL-AP BHARTI Airtel Ltd., IN 7552 4041 4012 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 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 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 23.140.180.0/24 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 /15:2098 /16:13682 /17:8223 /18:13500 /19:24804 /20:44791 /21:52140 /22:113252 /23:105819 /24:641606 /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 6841 12636 UNINET, MX 12479 6225 7294 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 14052 AMAZON-02, US 30036 2322 2665 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) ---------------------------------------------- 1:2440 2:1555 3:979 4:10 5:4976 6:186 7:6 8:1501 9:10 11:172 12:1224 13:607 14:2613 15:416 16:289 17:383 18:913 20:587 21:4 22:188 23:8137 24:2609 25:2 27:2826 29:19 31:3391 32:31 33:1 34:81 35:287 36:4612 37:4529 38:9980 39:1206 40:440 41:4508 42:1938 43:2861 44:411 45:19576 46:5106 47:394 49:2158 50:2062 51:597 52:1311 54:225 55:1117 56:11 57:305 58:2295 59:1327 60:1170 61:3058 62:3106 63:1742 64:6001 65:2124 66:5921 67:3246 68:1504 69:4202 70:1021 71:626 72:3070 74:2936 75:1512 76:597 77:2762 78:1924 79:1794 80:2299 81:2085 82:3897 83:1473 84:2022 85:3639 86:1099 87:2205 88:1358 89:4603 90:835 91:8429 92:2841 93:3022 94:4264 95:4558 96:1452 97:312 98:951 99:780 100:68 101:1313 102:4313 103:32230 104:5494 105:774 106:918 107:2815 108:1214 109:4252 110:2301 111:3978 112:2811 113:1892 114:2092 115:2310 116:2159 117:3149 118:2968 119:2065 120:2412 121:1512 122:2949 123:2294 124:1600 125:2925 126:125 128:1610 129:959 130:1552 131:2277 132:769 133:462 134:1638 135:538 136:1505 137:1416 138:3011 139:1610 140:1773 141:1568 142:2406 143:2107 144:1406 145:625 146:2190 147:2138 148:2786 149:2941 150:1313 151:2590 152:2263 153:866 154:9377 155:2271 156:4565 157:2243 158:1478 159:2727 160:3761 161:1996 162:3993 163:2334 164:1958 165:2623 166:1308 167:2192 168:3916 169:823 170:5450 171:1126 172:4548 173:3428 174:901 175:1338 176:3758 177:4742 178:4296 179:2289 180:2826 181:4344 182:3860 183:2648 184:2054 185:21720 186:5512 187:4772 188:4448 189:4461 190:9676 191:1538 192:11455 193:9513 194:7862 195:5628 196:3303 197:3175 198:6223 199:6109 200:8204 201:6376 202:10479 203:10595 204:4664 205:3766 206:4422 207:3950 208:4355 209:5517 210:4775 211:2683 212:4902 213:4045 214:1065 215:54 216:7131 217:3459 218:1606 219:409 220:2185 221:1293 222:776 223:3223 End of report