IPv4 R&E Routing Table Report 23:05 GMT Sat 18 Oct, 2025 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1009291 Prefixes after maximum aggregation (per Origin AS): 391416 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498121 Number of IPv4 prefixes with a valid ROA: 580041 Number of IPv4 prefixes with an invalid ROA: 693 Number of IPv4 prefixes with no ROA: 428557 Total ASes present in the Internet Routing Table: 77363 Prefixes per ASN: 13.05 Origin-only ASes present in the Internet Routing Table: 66320 Origin ASes announcing only one prefix: 27067 Transit ASes present in the Internet Routing Table: 11043 Transit-only ASes present in the Internet Routing Table: 550 Paths with bogon ASNs present in the IPv4 Routing Table: 66 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1018 Number of instances of unregistered ASNs: 1084 Number of 32-bit ASNs allocated by the RIRs: 47753 Number of 32-bit ASNs visible in the Routing Table: 39126 Prefixes from 32-bit ASNs in the Routing Table: 214056 Number of bogon 32-bit ASNs visible in the Routing Table: 152 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 429 Number of addresses announced to Internet: 3111951616 Equivalent to 185 /8s, 124 /16s and 157 /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: 329183 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270590 Total APNIC prefixes after maximum aggregation: 80026 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 260186 Unique aggregates announced from the APNIC address blocks: 105865 APNIC Region origin ASes present in the Internet Routing Table: 14802 APNIC Prefixes per ASN: 17.58 APNIC Region origin ASes announcing only one prefix: 4474 APNIC Region transit ASes present in the Internet Routing Table: 1988 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10379 Number of APNIC addresses announced to Internet: 751628544 Equivalent to 44 /8s, 204 /16s and 241 /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: 297367 Total ARIN prefixes after maximum aggregation: 134457 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298502 Unique aggregates announced from the ARIN address blocks: 144632 ARIN Region origin ASes present in the Internet Routing Table: 19313 ARIN Prefixes per ASN: 15.46 ARIN Region origin ASes announcing only one prefix: 7093 ARIN Region transit ASes present in the Internet Routing Table: 1911 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5362 Number of ARIN addresses announced to Internet: 1352750336 Equivalent to 80 /8s, 161 /16s and 85 /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: 280214 Total RIPE prefixes after maximum aggregation: 138977 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280155 Unique aggregates announced from the RIPE address blocks: 181292 RIPE Region origin ASes present in the Internet Routing Table: 29092 RIPE Prefixes per ASN: 9.63 RIPE Region origin ASes announcing only one prefix: 12114 RIPE Region transit ASes present in the Internet Routing Table: 4045 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12772 Number of RIPE addresses announced to Internet: 733000704 Equivalent to 43 /8s, 176 /16s and 180 /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: 124913 Total LACNIC prefixes after maximum aggregation: 30393 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120978 Unique aggregates announced from the LACNIC address blocks: 49430 LACNIC Region origin ASes present in the Internet Routing Table: 11305 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2672 LACNIC Region transit ASes present in the Internet Routing Table: 2534 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9275 Number of LACNIC addresses announced to Internet: 170625024 Equivalent to 10 /8s, 43 /16s and 136 /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: 35189 Total AfriNIC prefixes after maximum aggregation: 6875 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 49041 Unique aggregates announced from the AfriNIC address blocks: 16525 AfriNIC Region origin ASes present in the Internet Routing Table: 1973 AfriNIC Prefixes per ASN: 24.86 AfriNIC Region origin ASes announcing only one prefix: 714 AfriNIC Region transit ASes present in the Internet Routing Table: 378 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1338 Number of AfriNIC addresses announced to Internet: 103717632 Equivalent to 6 /8s, 46 /16s and 155 /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 6180 834 599 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4355 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3981 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3686 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3299 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3167 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2931 863 502 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2523 517 1630 HUTCHISON-AS-AP HGC Global Communications Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14364 41087 5389 AMAZON-02, US 11492 4771 322 787 CABLEONE, US 22773 4309 3089 366 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3685 1320 82 SHAW, CA 396982 3273 4825 466 GOOGLE-CLOUD-PLATFORM, US 749 3218 54766 2469 DNIC-AS-00749, US 4155 3117 241 1744 USDA-1, US 16625 2903 1238 2170 AKAMAI-AS, US 174 2856 8762 844 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/Singapore/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 9009 3981 374 2246 M247, RO 20940 3915 3395 124 AKAMAI-ASN1, NL 12389 3138 2313 866 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2542 182 1849 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1718 205 1005 HOSTROYALE, IN 8452 1691 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12376 3260 587 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 1272 371 23 Telefonica del Peru S.A.A., PE 11664 1239 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1059 67 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/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 29571 1283 102 52 ORANGE-COTE-IVOIRE, CI 24863 1250 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 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 551 57 54 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14364 41087 5389 AMAZON-02, US 9808 13840 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12376 3260 587 UNINET, MX 12479 7382 1711 149 UNI2-AS, ES 7545 6180 834 599 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 4355 347 25 FPT-AS-AP FPT Telecom Company, VN 22773 4309 3089 366 ASN-CXA-ALL-CCI-22773-RDC, US Complete listing at https://bgp.nsrc.org/REN/Singapore/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 12376 11789 UNINET, MX 12479 7382 7233 UNI2-AS, ES 7545 6180 5581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4355 4330 FPT-AS-AP FPT Telecom Company, VN 9498 4477 4165 BBIL-AP BHARTI Airtel Ltd., IN 11492 4771 3984 CABLEONE, US 7552 3981 3953 VIETEL-AS-AP Viettel Group, VN 22773 4309 3943 ASN-CXA-ALL-CCI-22773-RDC, US Complete listing at https://bgp.nsrc.org/REN/Singapore/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 3356 LEVEL3, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/Singapore/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/Singapore/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:41 /11:93 /12:300 /13:579 /14:1198 /15:2121 /16:13744 /17:8146 /18:13409 /19:24578 /20:44246 /21:51826 /22:112608 /23:104180 /24:632192 /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 6607 12376 UNINET, MX 12479 6350 7382 UNI2-AS, ES 11492 3584 4771 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3473 3685 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2649 4309 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2414 14364 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/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2414 2:1530 3:946 4:10 5:4864 6:170 7:6 8:1521 9:6 11:172 12:1238 13:557 14:2651 15:403 16:300 17:387 18:906 20:577 21:4 22:188 23:8020 24:2559 25:2 27:2790 29:19 31:3329 32:31 33:1 34:84 35:277 36:4484 37:4546 38:9482 39:1107 40:472 41:4278 42:1938 43:2814 44:395 45:19224 46:5164 47:369 49:2089 50:2050 51:595 52:1630 54:353 55:1096 56:11 57:281 58:2311 59:1311 60:1189 61:2950 62:3084 63:1753 64:5801 65:2121 66:5554 67:3141 68:1468 69:4095 70:1042 71:626 72:2990 74:2823 75:1505 76:593 77:2763 78:1896 79:1746 80:2246 81:2131 82:3473 83:1478 84:1985 85:3542 86:1101 87:2134 88:1326 89:4519 90:814 91:8381 92:2809 93:2979 94:4145 95:4501 96:1472 97:312 98:949 99:754 100:71 101:1479 102:4190 103:32885 104:5454 105:777 106:896 107:2795 108:1199 109:4223 110:2257 111:3819 112:2706 113:1850 114:2068 115:2291 116:2102 117:3047 118:3031 119:2012 120:2298 121:1481 122:2806 123:2254 124:1706 125:2906 126:125 128:1566 129:958 130:1418 131:2164 132:788 133:461 134:1620 135:364 136:1492 137:1133 138:2811 139:1592 140:1638 141:1551 142:2167 143:2095 144:1293 145:629 146:2173 147:2131 148:2746 149:2944 150:1298 151:2634 152:2209 153:576 154:7835 155:2202 156:3176 157:2010 158:1442 159:2603 160:3629 161:2002 162:3950 163:2297 164:1951 165:2556 166:1565 167:2110 168:3818 169:778 170:5388 171:1064 172:4484 173:3427 174:905 175:1351 176:3751 177:4689 178:4320 179:2275 180:2879 181:4258 182:3747 183:2554 184:2071 185:21632 186:5351 187:4703 188:4388 189:4393 190:9713 191:1551 192:11384 193:9477 194:7828 195:5585 196:3285 197:3332 198:6096 199:8802 200:8041 201:6361 202:10454 203:10584 204:4599 205:3627 206:4378 207:3712 208:4228 209:5349 210:4687 211:2688 212:4871 213:3907 214:1028 215:52 216:7070 217:3358 218:1576 219:400 220:2198 221:1250 222:751 223:3084 End of report