IPv4 R&E Routing Table Report 23:05 GMT Fri 07 Nov, 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: 1009518 Prefixes after maximum aggregation (per Origin AS): 391670 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 500970 Number of IPv4 prefixes with a valid ROA: 585119 Number of IPv4 prefixes with an invalid ROA: 620 Number of IPv4 prefixes with no ROA: 423779 Total ASes present in the Internet Routing Table: 77429 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66323 Origin ASes announcing only one prefix: 27100 Transit ASes present in the Internet Routing Table: 11106 Transit-only ASes present in the Internet Routing Table: 553 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: 994 Number of instances of unregistered ASNs: 1023 Number of 32-bit ASNs allocated by the RIRs: 47922 Number of 32-bit ASNs visible in the Routing Table: 39242 Prefixes from 32-bit ASNs in the Routing Table: 215354 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: 410 Number of addresses announced to Internet: 3102592768 Equivalent to 184 /8s, 237 /16s and 207 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 331167 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271291 Total APNIC prefixes after maximum aggregation: 80372 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 261040 Unique aggregates announced from the APNIC address blocks: 106168 APNIC Region origin ASes present in the Internet Routing Table: 14816 APNIC Prefixes per ASN: 17.62 APNIC Region origin ASes announcing only one prefix: 4495 APNIC Region transit ASes present in the Internet Routing Table: 2004 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10395 Number of APNIC addresses announced to Internet: 748493568 Equivalent to 44 /8s, 157 /16s and 27 /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: 296022 Total ARIN prefixes after maximum aggregation: 133490 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296362 Unique aggregates announced from the ARIN address blocks: 145264 ARIN Region origin ASes present in the Internet Routing Table: 19349 ARIN Prefixes per ASN: 15.32 ARIN Region origin ASes announcing only one prefix: 7114 ARIN Region transit ASes present in the Internet Routing Table: 1931 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: 5405 Number of ARIN addresses announced to Internet: 1344948224 Equivalent to 80 /8s, 42 /16s and 72 /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: 280730 Total RIPE prefixes after maximum aggregation: 139473 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281348 Unique aggregates announced from the RIPE address blocks: 182460 RIPE Region origin ASes present in the Internet Routing Table: 29102 RIPE Prefixes per ASN: 9.67 RIPE Region origin ASes announcing only one prefix: 12113 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: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12802 Number of RIPE addresses announced to Internet: 735272448 Equivalent to 43 /8s, 211 /16s and 94 /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: 125273 Total LACNIC prefixes after maximum aggregation: 30765 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121316 Unique aggregates announced from the LACNIC address blocks: 49529 LACNIC Region origin ASes present in the Internet Routing Table: 11312 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2659 LACNIC Region transit ASes present in the Internet Routing Table: 2558 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: 9296 Number of LACNIC addresses announced to Internet: 170711808 Equivalent to 10 /8s, 44 /16s and 219 /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: 35208 Total AfriNIC prefixes after maximum aggregation: 6900 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 49042 Unique aggregates announced from the AfriNIC address blocks: 17190 AfriNIC Region origin ASes present in the Internet Routing Table: 1978 AfriNIC Prefixes per ASN: 24.79 AfriNIC Region origin ASes announcing only one prefix: 719 AfriNIC Region transit ASes present in the Internet Routing Table: 376 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: 1344 Number of AfriNIC addresses announced to Internet: 102945792 Equivalent to 6 /8s, 34 /16s and 212 /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 13392 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6092 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4517 538 314 BBIL-AP BHARTI Airtel Ltd., IN 18403 4453 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3980 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3717 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3315 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2938 864 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2485 272 1919 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14308 37277 5384 AMAZON-02, US 11492 4781 317 802 CABLEONE, US 22773 4638 3092 401 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3687 1320 82 SHAW, CA 396982 3290 4827 474 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2889 1235 2156 AKAMAI-AS, US 36352 2845 231 913 AS-COLOCROSSING, US 30036 2654 365 301 MEDIACOM-ENTERPRISE-BUSINESS, 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 7287 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4012 377 2279 M247, RO 20940 3890 3395 125 AKAMAI-ASN1, NL 12389 3143 2317 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2539 179 1830 CDNEXT, GB 34984 2416 363 575 TELLCOM-AS, TR 8452 1666 1852 13 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1458 166 842 HOSTROYALE, IN 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 12504 3297 576 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2504 511 350 Mega Cable, S.A. de C.V., MX 11830 1990 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 1271 371 23 Telefonica del Peru S.A.A., PE 22884 1056 67 361 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1027 2486 56 TIM SA, BR 18881 911 1127 31 TELEFONICA BRASIL S.A, 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 1789 594 28 RAYA-AS, EG 36992 1679 1509 397 ETISALAT-MISR, EG 29571 1270 100 71 ORANGE-COTE-IVOIRE, CI 24863 1265 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1085 1096 13 MOBINIL, EG 36935 998 521 44 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 554 82 3 KENET-AS, KE 15399 551 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 14308 37277 5384 AMAZON-02, US 9808 13392 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12504 3297 576 UNINET, MX 12479 7287 1711 149 UNI2-AS, ES 7545 6092 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4781 317 802 CABLEONE, US 22773 4638 3092 401 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4517 538 314 BBIL-AP BHARTI Airtel Ltd., IN 18403 4453 347 24 FPT-AS-AP FPT Telecom Company, VN 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 13392 13275 CHINAMOBILE-CN China Mobile Communications Grou 8151 12504 11928 UNINET, MX 12479 7287 7138 UNI2-AS, ES 7545 6092 5504 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4453 4429 FPT-AS-AP FPT Telecom Company, VN 22773 4638 4237 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4517 4203 BBIL-AP BHARTI Airtel Ltd., IN 11492 4781 3979 CABLEONE, US 7552 3980 3952 VIETEL-AS-AP Viettel Group, VN 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 3737 AS-PTD, 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 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 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 /8:18 /9:14 /10:41 /11:94 /12:298 /13:577 /14:1193 /15:2088 /16:13636 /17:8138 /18:13403 /19:24578 /20:44220 /21:51832 /22:112348 /23:104653 /24:632387 /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 6714 12504 UNINET, MX 12479 6231 7287 UNI2-AS, ES 11492 3594 4781 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3475 3687 SHAW, CA 22773 2982 4638 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2452 14308 AMAZON-02, US 30036 2311 2654 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3456 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) ---------------------------------------------- 1:2437 2:1523 3:970 4:10 5:4938 6:188 7:6 8:1508 9:6 11:172 12:1230 13:561 14:2650 15:405 16:303 17:385 18:910 20:580 21:4 22:188 23:8040 24:2561 25:2 27:2786 29:19 31:3365 32:31 33:1 34:84 35:275 36:4513 37:4567 38:9366 39:1174 40:462 41:4319 42:1969 43:2826 44:400 45:19246 46:5182 47:365 49:2159 50:2050 51:595 52:1625 54:357 55:1101 56:11 57:288 58:2316 59:1321 60:1188 61:3014 62:3110 63:1751 64:5886 65:2130 66:5875 67:3231 68:1489 69:4100 70:1039 71:625 72:2999 74:2880 75:1511 76:600 77:2776 78:1908 79:1791 80:2274 81:2124 82:3589 83:1464 84:2003 85:3572 86:1107 87:2134 88:1328 89:4516 90:831 91:8402 92:2826 93:2979 94:4146 95:4533 96:1459 97:312 98:952 99:768 100:68 101:1485 102:4187 103:32718 104:5464 105:766 106:908 107:2795 108:1195 109:4228 110:2257 111:3859 112:2758 113:1899 114:2087 115:2248 116:2126 117:3098 118:3063 119:2043 120:2338 121:1497 122:2852 123:2263 124:1645 125:2924 126:125 128:1573 129:957 130:1479 131:2230 132:774 133:461 134:1624 135:365 136:1493 137:1133 138:2848 139:1591 140:1686 141:1578 142:2226 143:2126 144:1329 145:633 146:2179 147:2118 148:2778 149:2840 150:1294 151:2649 152:2269 153:589 154:8064 155:2218 156:3223 157:2101 158:1403 159:2661 160:3672 161:2002 162:3990 163:2321 164:1954 165:2554 166:1322 167:2124 168:3820 169:775 170:5466 171:1066 172:4502 173:3429 174:905 175:1354 176:3757 177:4740 178:4294 179:2277 180:2893 181:4315 182:3803 183:2596 184:2066 185:21653 186:5408 187:4744 188:4401 189:4469 190:9697 191:1560 192:11417 193:9496 194:7826 195:5586 196:3269 197:3336 198:6046 199:6086 200:8028 201:6373 202:10454 203:10553 204:4614 205:3633 206:4356 207:3712 208:4269 209:5317 210:4691 211:2646 212:4896 213:3964 214:1039 215:54 216:7134 217:3379 218:1572 219:402 220:2198 221:1266 222:762 223:3124 End of report