IPv4 R&E Routing Table Report 23:05 GMT Thu 23 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: 1009703 Prefixes after maximum aggregation (per Origin AS): 392053 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498528 Number of IPv4 prefixes with a valid ROA: 580983 Number of IPv4 prefixes with an invalid ROA: 554 Number of IPv4 prefixes with no ROA: 428166 Total ASes present in the Internet Routing Table: 77390 Prefixes per ASN: 13.05 Origin-only ASes present in the Internet Routing Table: 66337 Origin ASes announcing only one prefix: 27092 Transit ASes present in the Internet Routing Table: 11053 Transit-only ASes present in the Internet Routing Table: 545 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: 1026 Number of instances of unregistered ASNs: 1055 Number of 32-bit ASNs allocated by the RIRs: 47788 Number of 32-bit ASNs visible in the Routing Table: 39169 Prefixes from 32-bit ASNs in the Routing Table: 214358 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: 424 Number of addresses announced to Internet: 3111775488 Equivalent to 185 /8s, 121 /16s and 237 /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: 329565 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270633 Total APNIC prefixes after maximum aggregation: 80363 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 260233 Unique aggregates announced from the APNIC address blocks: 105931 APNIC Region origin ASes present in the Internet Routing Table: 14817 APNIC Prefixes per ASN: 17.56 APNIC Region origin ASes announcing only one prefix: 4485 APNIC Region transit ASes present in the Internet Routing Table: 1994 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: 10393 Number of APNIC addresses announced to Internet: 751562496 Equivalent to 44 /8s, 203 /16s and 239 /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: 297534 Total ARIN prefixes after maximum aggregation: 134694 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298587 Unique aggregates announced from the ARIN address blocks: 144607 ARIN Region origin ASes present in the Internet Routing Table: 19325 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7100 ARIN Region transit ASes present in the Internet Routing Table: 1906 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: 5378 Number of ARIN addresses announced to Internet: 1352438272 Equivalent to 80 /8s, 156 /16s and 146 /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: 280307 Total RIPE prefixes after maximum aggregation: 139005 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280256 Unique aggregates announced from the RIPE address blocks: 181459 RIPE Region origin ASes present in the Internet Routing Table: 29088 RIPE Prefixes per ASN: 9.63 RIPE Region origin ASes announcing only one prefix: 12109 RIPE Region transit ASes present in the Internet Routing Table: 4049 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: 733190144 Equivalent to 43 /8s, 179 /16s and 152 /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: 124962 Total LACNIC prefixes after maximum aggregation: 30431 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121046 Unique aggregates announced from the LACNIC address blocks: 49517 LACNIC Region origin ASes present in the Internet Routing Table: 11314 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2684 LACNIC Region transit ASes present in the Internet Routing Table: 2539 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: 9288 Number of LACNIC addresses announced to Internet: 170731264 Equivalent to 10 /8s, 45 /16s and 39 /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: 35241 Total AfriNIC prefixes after maximum aggregation: 6875 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 49157 Unique aggregates announced from the AfriNIC address blocks: 16645 AfriNIC Region origin ASes present in the Internet Routing Table: 1973 AfriNIC Prefixes per ASN: 24.91 AfriNIC Region origin ASes announcing only one prefix: 714 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: 1337 Number of AfriNIC addresses announced to Internet: 103629056 Equivalent to 6 /8s, 45 /16s and 65 /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 13306 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6126 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4479 536 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4377 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3977 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 3238 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2932 863 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2413 509 1561 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 14346 41103 5381 AMAZON-02, US 11492 4773 322 789 CABLEONE, US 22773 4289 3088 368 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3860 286 85 VIASAT-SP-BACKBONE, US 6327 3686 1320 82 SHAW, CA 396982 3277 4825 468 GOOGLE-CLOUD-PLATFORM, US 749 3218 54766 2469 DNIC-AS-00749, US 4155 3119 241 1747 USDA-1, US 16625 2881 1226 2158 AKAMAI-AS, US 174 2843 8762 871 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 7351 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3985 375 2274 M247, RO 20940 3907 3395 124 AKAMAI-ASN1, NL 12389 3108 2310 843 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2506 177 1815 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1721 206 1005 HOSTROYALE, IN 8452 1670 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 12441 3291 572 UNINET, MX 10620 3455 463 1098 Telmex Colombia S.A., CO 13999 2510 510 349 Mega Cable, S.A. de C.V., MX 11830 1991 369 64 Instituto Costarricense de Electricidad y 28573 1375 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1279 371 23 Telefonica del Peru S.A.A., PE 11664 1234 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1059 67 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1013 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 1925 630 32 RAYA-AS, EG 36992 1513 1498 386 ETISALAT-MISR, EG 29571 1284 102 52 ORANGE-COTE-IVOIRE, CI 24863 1263 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 579 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 14346 41103 5381 AMAZON-02, US 9808 13306 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12441 3291 572 UNINET, MX 12479 7351 1711 149 UNI2-AS, ES 7545 6126 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 4377 347 25 FPT-AS-AP FPT Telecom Company, VN 22773 4289 3088 368 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 13306 13189 CHINAMOBILE-CN China Mobile Communications Grou 8151 12441 11869 UNINET, MX 12479 7351 7202 UNI2-AS, ES 7545 6126 5536 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4377 4352 FPT-AS-AP FPT Telecom Company, VN 9498 4479 4166 BBIL-AP BHARTI Airtel Ltd., IN 11492 4773 3984 CABLEONE, US 7552 3977 3949 VIETEL-AS-AP Viettel Group, VN 22773 4289 3921 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 6461 ZAYO-6461, 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 /16:13738 /17:8151 /18:13412 /19:24571 /20:44232 /21:51821 /22:112562 /23:104246 /24:632608 /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 6650 12441 UNINET, MX 12479 6310 7351 UNI2-AS, ES 11492 3586 4773 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3474 3686 SHAW, CA 7155 2819 3860 VIASAT-SP-BACKBONE, US 22773 2626 4289 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2427 14346 AMAZON-02, US 30036 2287 2629 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2210 3455 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) ---------------------------------------------- 1:2430 2:1530 3:943 4:10 5:4874 6:170 7:6 8:1511 9:6 11:172 12:1239 13:546 14:2656 15:402 16:303 17:387 18:907 20:579 21:4 22:188 23:8027 24:2560 25:2 27:2794 29:19 31:3342 32:31 33:1 34:84 35:275 36:4508 37:4552 38:9563 39:1097 40:472 41:4280 42:1940 43:2809 44:396 45:19253 46:5173 47:369 49:2108 50:2044 51:595 52:1629 54:355 55:1103 56:11 57:284 58:2308 59:1305 60:1189 61:2952 62:3075 63:1756 64:5816 65:2134 66:5597 67:3143 68:1475 69:4098 70:1040 71:628 72:2978 74:2844 75:1508 76:598 77:2764 78:1896 79:1751 80:2246 81:2132 82:3467 83:1476 84:1988 85:3566 86:1100 87:2132 88:1323 89:4521 90:812 91:8394 92:2810 93:2980 94:4155 95:4491 96:1469 97:313 98:948 99:754 100:71 101:1475 102:4191 103:32803 104:5443 105:775 106:896 107:2773 108:1199 109:4223 110:2260 111:3825 112:2719 113:1862 114:2070 115:2245 116:2107 117:3033 118:3027 119:2026 120:2315 121:1481 122:2805 123:2255 124:1705 125:2911 126:124 128:1557 129:956 130:1417 131:2168 132:788 133:460 134:1622 135:365 136:1487 137:1134 138:2807 139:1581 140:1634 141:1555 142:2211 143:2077 144:1292 145:629 146:2178 147:2124 148:2755 149:2887 150:1299 151:2624 152:2215 153:579 154:7916 155:2193 156:3165 157:2007 158:1450 159:2603 160:3638 161:2002 162:3963 163:2300 164:1951 165:2562 166:1514 167:2115 168:3795 169:772 170:5395 171:1057 172:4467 173:3421 174:903 175:1349 176:3753 177:4700 178:4313 179:2281 180:2879 181:4295 182:3750 183:2559 184:2069 185:21650 186:5358 187:4668 188:4392 189:4411 190:9738 191:1561 192:11377 193:9477 194:7836 195:5571 196:3262 197:3343 198:6090 199:8803 200:8065 201:6364 202:10443 203:10594 204:4607 205:3635 206:4345 207:3708 208:4243 209:5363 210:4685 211:2689 212:4893 213:3919 214:1040 215:53 216:7146 217:3355 218:1576 219:399 220:2198 221:1257 222:754 223:3112 End of report