IPv4 R&E Routing Table Report 21:10 GMT Sun 19 Oct, 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: 1011251 Prefixes after maximum aggregation (per Origin AS): 391818 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498113 Number of IPv4 prefixes with a valid ROA: 580790 Number of IPv4 prefixes with an invalid ROA: 130 Number of IPv4 prefixes with no ROA: 430331 Total ASes present in the Internet Routing Table: 77452 Prefixes per ASN: 13.06 Origin-only ASes present in the Internet Routing Table: 66327 Origin ASes announcing only one prefix: 27128 Transit ASes present in the Internet Routing Table: 11125 Transit-only ASes present in the Internet Routing Table: 564 Paths with bogon ASNs present in the IPv4 Routing Table: 45 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 55 Max AS path prepend of ASN (135823) 50 Prefixes from unregistered ASNs in the Routing Table: 959 Number of instances of unregistered ASNs: 1025 Number of 32-bit ASNs allocated by the RIRs: 47761 Number of 32-bit ASNs visible in the Routing Table: 39156 Prefixes from 32-bit ASNs in the Routing Table: 213431 Number of bogon 32-bit ASNs visible in the Routing Table: 148 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 434 Number of addresses announced to Internet: 3112211456 Equivalent to 185 /8s, 128 /16s and 148 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 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: 330059 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269999 Total APNIC prefixes after maximum aggregation: 80165 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 259562 Unique aggregates announced from the APNIC address blocks: 105959 APNIC Region origin ASes present in the Internet Routing Table: 14845 APNIC Prefixes per ASN: 17.48 APNIC Region origin ASes announcing only one prefix: 4533 APNIC Region transit ASes present in the Internet Routing Table: 1981 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 55 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10399 Number of APNIC addresses announced to Internet: 751534592 Equivalent to 44 /8s, 203 /16s and 130 /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: 299196 Total ARIN prefixes after maximum aggregation: 134677 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300297 Unique aggregates announced from the ARIN address blocks: 144653 ARIN Region origin ASes present in the Internet Routing Table: 19354 ARIN Prefixes per ASN: 15.52 ARIN Region origin ASes announcing only one prefix: 7103 ARIN Region transit ASes present in the Internet Routing Table: 1988 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: 5374 Number of ARIN addresses announced to Internet: 1352944128 Equivalent to 80 /8s, 164 /16s and 74 /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: 280814 Total RIPE prefixes after maximum aggregation: 139047 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280772 Unique aggregates announced from the RIPE address blocks: 181281 RIPE Region origin ASes present in the Internet Routing Table: 29099 RIPE Prefixes per ASN: 9.65 RIPE Region origin ASes announcing only one prefix: 12102 RIPE Region transit ASes present in the Internet Routing Table: 4029 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 52 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12775 Number of RIPE addresses announced to Internet: 733003520 Equivalent to 43 /8s, 176 /16s and 191 /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: 125161 Total LACNIC prefixes after maximum aggregation: 30386 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121221 Unique aggregates announced from the LACNIC address blocks: 49449 LACNIC Region origin ASes present in the Internet Routing Table: 11299 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2677 LACNIC Region transit ASes present in the Internet Routing Table: 2551 Average LACNIC Region AS path length visible: 5.2 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9276 Number of LACNIC addresses announced to Internet: 170712832 Equivalent to 10 /8s, 44 /16s and 223 /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: 35122 Total AfriNIC prefixes after maximum aggregation: 6886 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 48964 Unique aggregates announced from the AfriNIC address blocks: 16388 AfriNIC Region origin ASes present in the Internet Routing Table: 1968 AfriNIC Prefixes per ASN: 24.88 AfriNIC Region origin ASes announcing only one prefix: 713 AfriNIC Region transit ASes present in the Internet Routing Table: 380 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 42 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1332 Number of AfriNIC addresses announced to Internet: 103785728 Equivalent to 6 /8s, 47 /16s and 165 /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 13840 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6181 834 601 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4360 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3979 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3686 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3295 1868 98 VNPT-AS-VN VNPT Corp, VN 56046 3163 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2931 863 502 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2521 517 1629 HUTCHISON-AS-AP HGC Global Communications 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 14375 41088 5398 AMAZON-02, US 11492 4771 322 787 CABLEONE, US 22773 4301 3085 366 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3684 1320 82 SHAW, CA 396982 3273 4825 466 GOOGLE-CLOUD-PLATFORM, US 749 3218 54766 2469 DNIC-AS-00749, US 4155 3116 241 1741 USDA-1, US 16625 3039 1301 2212 AKAMAI-AS, US 174 2926 8766 795 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 7382 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 4040 3395 126 AKAMAI-ASN1, NL 9009 3949 372 2239 M247, RO 12389 3138 2313 866 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2540 181 1847 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1719 205 1003 HOSTROYALE, IN 8452 1694 1852 14 TE-AS TE-AS, EG 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 12400 3284 576 UNINET, MX 10620 3479 468 1087 Telmex Colombia S.A., CO 13999 2517 511 347 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1376 2435 257 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1278 371 23 Telefonica del Peru S.A.A., PE 11664 1253 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1064 71 367 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 1843 630 32 RAYA-AS, EG 36992 1513 1498 386 ETISALAT-MISR, EG 24863 1250 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1188 102 52 ORANGE-COTE-IVOIRE, CI 36935 1119 523 47 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 573 82 3 KENET-AS, KE 15399 544 57 55 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 14375 41088 5398 AMAZON-02, US 9808 13840 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12400 3284 576 UNINET, MX 12479 7382 1711 149 UNI2-AS, ES 7545 6181 834 601 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4771 322 787 CABLEONE, US 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4360 347 24 FPT-AS-AP FPT Telecom Company, VN 22773 4301 3085 366 ASN-CXA-ALL-CCI-22773-RDC, US 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 13840 13723 CHINAMOBILE-CN China Mobile Communications Grou 8151 12400 11824 UNINET, MX 12479 7382 7233 UNI2-AS, ES 7545 6181 5580 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4360 4336 FPT-AS-AP FPT Telecom Company, VN 9498 4477 4165 BBIL-AP BHARTI Airtel Ltd., IN 11492 4771 3984 CABLEONE, US 7552 3979 3951 VIETEL-AS-AP Viettel Group, VN 22773 4301 3935 ASN-CXA-ALL-CCI-22773-RDC, US 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 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 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 3356 LEVEL3, 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 397015 UNALLOCATED 8.44.246.0/24 12025 IMDC-AS12025, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, 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 23.140.216.0/24 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /12:300 /13:583 /14:1204 /15:2128 /16:13786 /17:8218 /18:13490 /19:24726 /20:44384 /21:52013 /22:112927 /23:104614 /24:632713 /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 6620 12400 UNINET, MX 12479 6350 7382 UNI2-AS, ES 11492 3584 4771 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3473 3684 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2650 4301 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2414 14375 AMAZON-02, US 30036 2307 2648 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3479 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) ---------------------------------------------- 1:2416 2:1566 3:946 4:10 5:4859 6:170 7:6 8:1522 9:6 11:172 12:1238 13:557 14:2650 15:403 16:301 17:387 18:906 20:578 21:4 22:188 23:8079 24:2609 25:2 27:2806 29:19 31:3329 32:31 33:1 34:81 35:272 36:4474 37:4550 38:9489 39:1107 40:472 41:4279 42:1941 43:2766 44:398 45:19120 46:5194 47:369 49:2081 50:2054 51:596 52:1631 54:353 55:1087 56:11 57:284 58:2286 59:1300 60:1189 61:2916 62:3089 63:1760 64:5804 65:2118 66:5570 67:3151 68:1467 69:4126 70:1034 71:635 72:2988 74:2832 75:1510 76:593 77:2764 78:1918 79:1749 80:2248 81:2141 82:3485 83:1484 84:1992 85:3551 86:1100 87:2145 88:1361 89:4511 90:814 91:8388 92:2813 93:2986 94:4148 95:4523 96:1494 97:312 98:949 99:754 100:71 101:1223 102:4208 103:32274 104:5449 105:790 106:895 107:2794 108:1202 109:4229 110:2241 111:3815 112:2706 113:1847 114:2069 115:2334 116:2085 117:3045 118:3033 119:1992 120:2303 121:1490 122:2812 123:2268 124:1656 125:2878 126:125 128:1603 129:960 130:1439 131:2176 132:794 133:461 134:1626 135:364 136:1494 137:1327 138:2828 139:1592 140:1642 141:1559 142:2170 143:2098 144:1285 145:629 146:2181 147:2138 148:2750 149:2943 150:1284 151:2633 152:2214 153:642 154:7803 155:2203 156:3180 157:2000 158:1444 159:2608 160:3643 161:2003 162:3955 163:2300 164:1954 165:2553 166:1562 167:2113 168:3824 169:785 170:5388 171:1062 172:4495 173:3426 174:905 175:1346 176:3752 177:4740 178:4308 179:2278 180:2738 181:4261 182:3749 183:2555 184:2088 185:21669 186:5354 187:4728 188:4381 189:4408 190:9714 191:1553 192:11421 193:9491 194:7826 195:5586 196:3287 197:3242 198:6255 199:8807 200:8171 201:6359 202:10479 203:10621 204:4631 205:3696 206:4433 207:3869 208:4252 209:5411 210:4743 211:2688 212:4879 213:3920 214:1031 215:52 216:7088 217:3367 218:1578 219:398 220:2193 221:1252 222:753 223:3072 End of report