IPv4 R&E Routing Table Report 21:10 GMT Tue 21 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: 1011571 Prefixes after maximum aggregation (per Origin AS): 391989 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498227 Number of IPv4 prefixes with a valid ROA: 581142 Number of IPv4 prefixes with an invalid ROA: 126 Number of IPv4 prefixes with no ROA: 430303 Total ASes present in the Internet Routing Table: 77466 Prefixes per ASN: 13.06 Origin-only ASes present in the Internet Routing Table: 66323 Origin ASes announcing only one prefix: 27126 Transit ASes present in the Internet Routing Table: 11143 Transit-only ASes present in the Internet Routing Table: 560 Paths with bogon ASNs present in the IPv4 Routing Table: 5 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: 964 Number of instances of unregistered ASNs: 993 Number of 32-bit ASNs allocated by the RIRs: 47760 Number of 32-bit ASNs visible in the Routing Table: 39184 Prefixes from 32-bit ASNs in the Routing Table: 213663 Number of bogon 32-bit ASNs visible in the Routing Table: 68 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 433 Number of addresses announced to Internet: 3112017664 Equivalent to 185 /8s, 125 /16s and 159 /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: 330225 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270061 Total APNIC prefixes after maximum aggregation: 80191 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 259641 Unique aggregates announced from the APNIC address blocks: 105971 APNIC Region origin ASes present in the Internet Routing Table: 14842 APNIC Prefixes per ASN: 17.49 APNIC Region origin ASes announcing only one prefix: 4531 APNIC Region transit ASes present in the Internet Routing Table: 1983 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: 751544064 Equivalent to 44 /8s, 203 /16s and 167 /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: 299495 Total ARIN prefixes after maximum aggregation: 134797 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300531 Unique aggregates announced from the ARIN address blocks: 144601 ARIN Region origin ASes present in the Internet Routing Table: 19358 ARIN Prefixes per ASN: 15.52 ARIN Region origin ASes announcing only one prefix: 7098 ARIN Region transit ASes present in the Internet Routing Table: 1987 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: 5380 Number of ARIN addresses announced to Internet: 1352842240 Equivalent to 80 /8s, 162 /16s and 188 /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: 280832 Total RIPE prefixes after maximum aggregation: 139028 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280846 Unique aggregates announced from the RIPE address blocks: 181342 RIPE Region origin ASes present in the Internet Routing Table: 29098 RIPE Prefixes per ASN: 9.65 RIPE Region origin ASes announcing only one prefix: 12106 RIPE Region transit ASes present in the Internet Routing Table: 4035 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 36 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12782 Number of RIPE addresses announced to Internet: 732888320 Equivalent to 43 /8s, 174 /16s and 253 /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: 125150 Total LACNIC prefixes after maximum aggregation: 30421 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121204 Unique aggregates announced from the LACNIC address blocks: 49455 LACNIC Region origin ASes present in the Internet Routing Table: 11309 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2673 LACNIC Region transit ASes present in the Internet Routing Table: 2561 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: 9285 Number of LACNIC addresses announced to Internet: 170733312 Equivalent to 10 /8s, 45 /16s and 47 /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: 35069 Total AfriNIC prefixes after maximum aggregation: 6893 AfriNIC Deaggregation factor: 5.09 Prefixes being announced from the AfriNIC address blocks: 48915 Unique aggregates announced from the AfriNIC address blocks: 16478 AfriNIC Region origin ASes present in the Internet Routing Table: 1976 AfriNIC Prefixes per ASN: 24.75 AfriNIC Region origin ASes announcing only one prefix: 718 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: 1338 Number of AfriNIC addresses announced to Internet: 103782912 Equivalent to 6 /8s, 47 /16s and 154 /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 13841 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6171 834 593 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4478 536 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4376 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3982 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3699 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3294 1868 98 VNPT-AS-VN VNPT Corp, VN 56046 3163 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2932 863 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2503 516 1616 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 14307 41083 5371 AMAZON-02, US 11492 4772 322 788 CABLEONE, US 22773 4305 3086 367 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 3133 242 1752 USDA-1, US 16625 3042 1301 2215 AKAMAI-AS, US 174 2915 8765 816 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 7381 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 4040 3395 126 AKAMAI-ASN1, NL 9009 3979 376 2263 M247, RO 12389 3137 2313 866 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2500 176 1809 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1722 206 1003 HOSTROYALE, IN 8452 1668 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 12417 3289 576 UNINET, MX 10620 3479 468 1087 Telmex Colombia S.A., CO 13999 2509 510 349 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1280 371 23 Telefonica del Peru S.A.A., PE 11664 1258 278 31 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 1261 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1189 102 52 ORANGE-COTE-IVOIRE, CI 36935 1118 522 46 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 574 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 14307 41083 5371 AMAZON-02, US 9808 13841 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12417 3289 576 UNINET, MX 12479 7381 1711 149 UNI2-AS, ES 7545 6171 834 593 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4772 322 788 CABLEONE, US 9498 4478 536 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4376 347 24 FPT-AS-AP FPT Telecom Company, VN 22773 4305 3086 367 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 13841 13724 CHINAMOBILE-CN China Mobile Communications Grou 8151 12417 11841 UNINET, MX 12479 7381 7232 UNI2-AS, ES 7545 6171 5578 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4376 4352 FPT-AS-AP FPT Telecom Company, VN 9498 4478 4165 BBIL-AP BHARTI Airtel Ltd., IN 11492 4772 3984 CABLEONE, US 7552 3982 3954 VIETEL-AS-AP Viettel Group, VN 22773 4305 3938 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 /16:13784 /17:8218 /18:13496 /19:24721 /20:44361 /21:52040 /22:112861 /23:104621 /24:633089 /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 6628 12417 UNINET, MX 12479 6349 7381 UNI2-AS, ES 11492 3585 4772 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3473 3684 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2650 4305 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2409 14307 AMAZON-02, US 30036 2295 2636 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) ---------------------------------------------- 1:2425 2:1565 3:939 4:10 5:4856 6:170 7:6 8:1516 9:6 11:172 12:1238 13:535 14:2653 15:402 16:303 17:386 18:906 20:579 21:4 22:188 23:8140 24:2610 25:2 27:2807 29:19 31:3331 32:31 33:1 34:81 35:274 36:4472 37:4556 38:9543 39:1107 40:472 41:4243 42:1947 43:2765 44:402 45:19147 46:5190 47:369 49:2096 50:2047 51:596 52:1630 54:353 55:1104 56:11 57:286 58:2284 59:1295 60:1189 61:2918 62:3087 63:1762 64:5820 65:2123 66:5595 67:3154 68:1466 69:4133 70:1034 71:635 72:2974 74:2857 75:1512 76:594 77:2770 78:1920 79:1752 80:2249 81:2143 82:3482 83:1479 84:1993 85:3573 86:1101 87:2144 88:1360 89:4517 90:814 91:8388 92:2812 93:2986 94:4162 95:4525 96:1489 97:313 98:948 99:751 100:70 101:1221 102:4207 103:32269 104:5454 105:790 106:896 107:2794 108:1206 109:4234 110:2250 111:3816 112:2706 113:1843 114:2069 115:2334 116:2084 117:3043 118:3034 119:1993 120:2303 121:1491 122:2812 123:2268 124:1656 125:2882 126:124 128:1604 129:962 130:1437 131:2184 132:794 133:459 134:1626 135:364 136:1494 137:1326 138:2826 139:1588 140:1642 141:1561 142:2175 143:2102 144:1291 145:629 146:2187 147:2136 148:2757 149:2885 150:1287 151:2635 152:2220 153:642 154:7861 155:2214 156:3172 157:2006 158:1451 159:2604 160:3640 161:2003 162:3963 163:2299 164:1948 165:2557 166:1564 167:2118 168:3817 169:780 170:5389 171:1063 172:4482 173:3434 174:905 175:1347 176:3751 177:4747 178:4312 179:2276 180:2738 181:4272 182:3751 183:2559 184:2090 185:21674 186:5369 187:4714 188:4369 189:4403 190:9704 191:1552 192:11420 193:9481 194:7832 195:5569 196:3270 197:3239 198:6250 199:8817 200:8188 201:6360 202:10481 203:10630 204:4640 205:3676 206:4435 207:3864 208:4260 209:5416 210:4745 211:2687 212:4894 213:3923 214:1034 215:53 216:7159 217:3366 218:1579 219:398 220:2191 221:1251 222:756 223:3071 End of report