IPv4 R&E Routing Table Report 23:05 GMT Wed 22 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: 1009249 Prefixes after maximum aggregation (per Origin AS): 391504 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498464 Number of IPv4 prefixes with a valid ROA: 580383 Number of IPv4 prefixes with an invalid ROA: 560 Number of IPv4 prefixes with no ROA: 428306 Total ASes present in the Internet Routing Table: 77383 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66331 Origin ASes announcing only one prefix: 27095 Transit ASes present in the Internet Routing Table: 11052 Transit-only ASes present in the Internet Routing Table: 546 Paths with bogon ASNs present in the IPv4 Routing Table: 26 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: 1023 Number of instances of unregistered ASNs: 1052 Number of 32-bit ASNs allocated by the RIRs: 47768 Number of 32-bit ASNs visible in the Routing Table: 39151 Prefixes from 32-bit ASNs in the Routing Table: 214296 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 425 Number of addresses announced to Internet: 3111985920 Equivalent to 185 /8s, 125 /16s and 35 /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: 329411 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270530 Total APNIC prefixes after maximum aggregation: 79999 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 260177 Unique aggregates announced from the APNIC address blocks: 105866 APNIC Region origin ASes present in the Internet Routing Table: 14807 APNIC Prefixes per ASN: 17.57 APNIC Region origin ASes announcing only one prefix: 4486 APNIC Region transit ASes present in the Internet Routing Table: 1990 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: 10384 Number of APNIC addresses announced to Internet: 751637504 Equivalent to 44 /8s, 205 /16s and 20 /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: 297413 Total ARIN prefixes after maximum aggregation: 134611 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298444 Unique aggregates announced from the ARIN address blocks: 144620 ARIN Region origin ASes present in the Internet Routing Table: 19330 ARIN Prefixes per ASN: 15.44 ARIN Region origin ASes announcing only one prefix: 7099 ARIN Region transit ASes present in the Internet Routing Table: 1905 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5376 Number of ARIN addresses announced to Internet: 1352768000 Equivalent to 80 /8s, 161 /16s and 154 /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: 280204 Total RIPE prefixes after maximum aggregation: 138954 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280205 Unique aggregates announced from the RIPE address blocks: 181497 RIPE Region origin ASes present in the Internet Routing Table: 29095 RIPE Prefixes per ASN: 9.63 RIPE Region origin ASes announcing only one prefix: 12122 RIPE Region transit ASes present in the Internet Routing Table: 4047 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 27 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12773 Number of RIPE addresses announced to Internet: 732909056 Equivalent to 43 /8s, 175 /16s and 78 /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: 124926 Total LACNIC prefixes after maximum aggregation: 30385 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120992 Unique aggregates announced from the LACNIC address blocks: 49490 LACNIC Region origin ASes present in the Internet Routing Table: 11304 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2670 LACNIC Region transit ASes present in the Internet Routing Table: 2541 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: 9279 Number of LACNIC addresses announced to Internet: 170751488 Equivalent to 10 /8s, 45 /16s and 118 /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: 35153 Total AfriNIC prefixes after maximum aggregation: 6872 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 49006 Unique aggregates announced from the AfriNIC address blocks: 16621 AfriNIC Region origin ASes present in the Internet Routing Table: 1975 AfriNIC Prefixes per ASN: 24.81 AfriNIC Region origin ASes announcing only one prefix: 718 AfriNIC Region transit ASes present in the Internet Routing Table: 379 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: 1339 Number of AfriNIC addresses announced to Internet: 103696128 Equivalent to 6 /8s, 46 /16s and 71 /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 6127 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4479 536 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4400 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3979 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3715 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3308 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3167 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2932 863 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2478 514 1593 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 14347 41085 5381 AMAZON-02, US 11492 4773 322 789 CABLEONE, US 22773 4306 3089 366 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3860 286 85 VIASAT-SP-BACKBONE, US 6327 3685 1320 82 SHAW, CA 396982 3277 4825 468 GOOGLE-CLOUD-PLATFORM, US 749 3219 54766 2470 DNIC-AS-00749, US 4155 3125 242 1748 USDA-1, US 16625 2871 1219 2151 AKAMAI-AS, US 174 2844 8761 863 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 7375 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3977 376 2260 M247, RO 20940 3908 3395 124 AKAMAI-ASN1, NL 12389 3140 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2504 177 1813 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1721 206 1005 HOSTROYALE, IN 8452 1668 1852 13 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 12434 3291 573 UNINET, MX 10620 3479 468 1087 Telmex Colombia S.A., CO 13999 2511 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 1235 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1059 67 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 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 1883 630 32 RAYA-AS, EG 36992 1513 1498 386 ETISALAT-MISR, EG 29571 1284 102 52 ORANGE-COTE-IVOIRE, CI 24863 1261 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1117 522 45 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 577 82 3 KENET-AS, KE 15399 552 57 56 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 14347 41085 5381 AMAZON-02, US 9808 13841 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12434 3291 573 UNINET, MX 12479 7375 1711 149 UNI2-AS, ES 7545 6127 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4773 322 789 CABLEONE, US 9498 4479 536 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4400 347 25 FPT-AS-AP FPT Telecom Company, VN 22773 4306 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 13841 13724 CHINAMOBILE-CN China Mobile Communications Grou 8151 12434 11861 UNINET, MX 12479 7375 7226 UNI2-AS, ES 7545 6127 5537 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4400 4375 FPT-AS-AP FPT Telecom Company, VN 9498 4479 4166 BBIL-AP BHARTI Airtel Ltd., IN 11492 4773 3984 CABLEONE, US 7552 3979 3951 VIETEL-AS-AP Viettel Group, VN 22773 4306 3940 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 /16:13742 /17:8147 /18:13411 /19:24570 /20:44206 /21:51836 /22:112517 /23:104175 /24:632283 /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 6644 12434 UNINET, MX 12479 6327 7375 UNI2-AS, ES 11492 3586 4773 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3473 3685 SHAW, CA 7155 2819 3860 VIASAT-SP-BACKBONE, US 22773 2643 4306 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2425 14347 AMAZON-02, US 30036 2294 2635 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) ---------------------------------------------- 1:2426 2:1529 3:945 4:10 5:4869 6:170 7:6 8:1517 9:6 11:172 12:1238 13:552 14:2652 15:402 16:298 17:385 18:906 20:579 21:4 22:188 23:8021 24:2547 25:2 27:2789 29:19 31:3334 32:31 33:1 34:84 35:275 36:4482 37:4553 38:9546 39:1107 40:473 41:4282 42:1963 43:2814 44:396 45:19220 46:5177 47:369 49:2101 50:2041 51:595 52:1628 54:357 55:1104 56:11 57:284 58:2308 59:1309 60:1189 61:2951 62:3074 63:1754 64:5805 65:2135 66:5577 67:3144 68:1467 69:4086 70:1039 71:627 72:2977 74:2845 75:1508 76:598 77:2768 78:1894 79:1738 80:2245 81:2131 82:3473 83:1474 84:1986 85:3566 86:1101 87:2132 88:1325 89:4520 90:815 91:8389 92:2813 93:2982 94:4161 95:4495 96:1468 97:313 98:949 99:751 100:71 101:1476 102:4187 103:32804 104:5445 105:776 106:896 107:2794 108:1199 109:4232 110:2259 111:3820 112:2705 113:1861 114:2072 115:2245 116:2106 117:3043 118:3028 119:2026 120:2300 121:1481 122:2805 123:2256 124:1705 125:2910 126:124 128:1565 129:955 130:1419 131:2094 132:788 133:460 134:1619 135:364 136:1492 137:1131 138:2809 139:1590 140:1640 141:1558 142:2172 143:2085 144:1295 145:629 146:2179 147:2131 148:2756 149:2896 150:1302 151:2618 152:2215 153:579 154:7887 155:2196 156:3159 157:2014 158:1447 159:2601 160:3638 161:2002 162:3954 163:2294 164:1951 165:2563 166:1526 167:2118 168:3806 169:772 170:5398 171:1060 172:4461 173:3425 174:905 175:1349 176:3751 177:4702 178:4318 179:2281 180:2878 181:4290 182:3752 183:2557 184:2067 185:21619 186:5369 187:4673 188:4395 189:4392 190:9730 191:1559 192:11381 193:9472 194:7829 195:5566 196:3237 197:3338 198:6089 199:8802 200:8066 201:6357 202:10447 203:10591 204:4606 205:3624 206:4377 207:3704 208:4242 209:5362 210:4685 211:2688 212:4893 213:3911 214:1037 215:53 216:7150 217:3345 218:1577 219:400 220:2198 221:1249 222:754 223:3085 End of report