IPv4 R&E Routing Table Report 23:05 GMT Mon 03 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: 1009357 Prefixes after maximum aggregation (per Origin AS): 391094 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 500308 Number of IPv4 prefixes with a valid ROA: 584364 Number of IPv4 prefixes with an invalid ROA: 601 Number of IPv4 prefixes with no ROA: 424392 Total ASes present in the Internet Routing Table: 77419 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66350 Origin ASes announcing only one prefix: 27093 Transit ASes present in the Internet Routing Table: 11069 Transit-only ASes present in the Internet Routing Table: 554 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: 1002 Number of instances of unregistered ASNs: 1031 Number of 32-bit ASNs allocated by the RIRs: 47880 Number of 32-bit ASNs visible in the Routing Table: 39218 Prefixes from 32-bit ASNs in the Routing Table: 215373 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: 3116080896 Equivalent to 185 /8s, 187 /16s and 159 /24s Percentage of available address space announced: 84.2 Percentage of allocated address space announced: 84.2 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: 330947 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271147 Total APNIC prefixes after maximum aggregation: 80445 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 260862 Unique aggregates announced from the APNIC address blocks: 106153 APNIC Region origin ASes present in the Internet Routing Table: 14809 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: 2003 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: 10389 Number of APNIC addresses announced to Internet: 751774208 Equivalent to 44 /8s, 207 /16s and 42 /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: 295830 Total ARIN prefixes after maximum aggregation: 133311 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296362 Unique aggregates announced from the ARIN address blocks: 145379 ARIN Region origin ASes present in the Internet Routing Table: 19350 ARIN Prefixes per ASN: 15.32 ARIN Region origin ASes announcing only one prefix: 7116 ARIN Region transit ASes present in the Internet Routing Table: 1910 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: 5399 Number of ARIN addresses announced to Internet: 1353232896 Equivalent to 80 /8s, 168 /16s and 178 /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: 280697 Total RIPE prefixes after maximum aggregation: 139351 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 280991 Unique aggregates announced from the RIPE address blocks: 182088 RIPE Region origin ASes present in the Internet Routing Table: 29094 RIPE Prefixes per ASN: 9.66 RIPE Region origin ASes announcing only one prefix: 12104 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: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12795 Number of RIPE addresses announced to Internet: 736668672 Equivalent to 43 /8s, 232 /16s and 172 /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: 125324 Total LACNIC prefixes after maximum aggregation: 30408 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121391 Unique aggregates announced from the LACNIC address blocks: 49475 LACNIC Region origin ASes present in the Internet Routing Table: 11311 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2661 LACNIC Region transit ASes present in the Internet Routing Table: 2551 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 39 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9295 Number of LACNIC addresses announced to Internet: 170699520 Equivalent to 10 /8s, 44 /16s and 171 /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: 35357 Total AfriNIC prefixes after maximum aggregation: 6903 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 49341 Unique aggregates announced from the AfriNIC address blocks: 16849 AfriNIC Region origin ASes present in the Internet Routing Table: 1978 AfriNIC Prefixes per ASN: 24.94 AfriNIC Region origin ASes announcing only one prefix: 717 AfriNIC Region transit ASes present in the Internet Routing Table: 375 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: 1340 Number of AfriNIC addresses announced to Internet: 103484928 Equivalent to 6 /8s, 43 /16s and 14 /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 13385 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6097 833 587 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4502 537 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4417 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3985 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3718 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3314 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2936 864 504 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 14445 41088 5382 AMAZON-02, US 11492 4776 317 802 CABLEONE, US 22773 4641 3110 403 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3688 1320 82 SHAW, CA 396982 3281 4826 471 GOOGLE-CLOUD-PLATFORM, US 749 3216 54766 2467 DNIC-AS-00749, US 16625 2881 1230 2153 AKAMAI-AS, US 36352 2855 231 915 AS-COLOCROSSING, US 30036 2651 364 308 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 7286 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4018 378 2285 M247, RO 20940 3864 3395 122 AKAMAI-ASN1, NL 12389 3150 2317 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2527 177 1820 CDNEXT, GB 34984 2414 363 574 TELLCOM-AS, TR 8452 1650 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1594 186 925 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 12499 3301 570 UNINET, MX 10620 3455 463 1098 Telmex Colombia S.A., CO 13999 2506 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 1276 371 23 Telefonica del Peru S.A.A., PE 11664 1269 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1057 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1025 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 1837 630 32 RAYA-AS, EG 36992 1679 1509 397 ETISALAT-MISR, EG 29571 1286 102 52 ORANGE-COTE-IVOIRE, CI 24863 1263 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 566 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 14445 41088 5382 AMAZON-02, US 9808 13385 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12499 3301 570 UNINET, MX 12479 7286 1711 149 UNI2-AS, ES 7545 6097 833 587 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4776 317 802 CABLEONE, US 22773 4641 3110 403 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4502 537 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4417 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 13385 13268 CHINAMOBILE-CN China Mobile Communications Grou 8151 12499 11929 UNINET, MX 12479 7286 7137 UNI2-AS, ES 7545 6097 5510 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4417 4393 FPT-AS-AP FPT Telecom Company, VN 22773 4641 4238 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4502 4190 BBIL-AP BHARTI Airtel Ltd., IN 11492 4776 3974 CABLEONE, US 7552 3985 3957 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 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 /11:94 /12:299 /13:580 /14:1197 /15:2125 /16:13768 /17:8143 /18:13434 /19:24587 /20:44249 /21:51861 /22:112457 /23:104454 /24:632038 /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 6695 12499 UNINET, MX 12479 6247 7286 UNI2-AS, ES 11492 3589 4776 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3476 3688 SHAW, CA 22773 2984 4641 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2443 14445 AMAZON-02, US 30036 2309 2651 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) ---------------------------------------------- 1:2434 2:1527 3:969 4:10 5:4895 6:172 7:6 8:1509 9:6 11:172 12:1240 13:549 14:2646 15:403 16:303 17:387 18:912 20:581 21:4 22:188 23:8033 24:2560 25:2 27:2788 29:19 31:3358 32:31 33:1 34:84 35:275 36:4511 37:4548 38:9357 39:1174 40:469 41:4303 42:1945 43:2823 44:400 45:19315 46:5179 47:368 49:2145 50:2047 51:593 52:1628 54:357 55:1093 56:11 57:289 58:2314 59:1320 60:1187 61:3016 62:3099 63:1752 64:5886 65:2132 66:5880 67:3235 68:1484 69:4126 70:1041 71:629 72:2989 74:2869 75:1508 76:600 77:2765 78:1907 79:1784 80:2266 81:2121 82:3567 83:1468 84:1996 85:3578 86:1108 87:2143 88:1326 89:4514 90:814 91:8386 92:2808 93:2989 94:4164 95:4535 96:1465 97:312 98:947 99:764 100:71 101:1478 102:4197 103:32716 104:5460 105:775 106:910 107:2789 108:1192 109:4206 110:2261 111:3853 112:2754 113:1893 114:2084 115:2246 116:2119 117:3074 118:3060 119:2030 120:2342 121:1493 122:2853 123:2240 124:1709 125:2920 126:124 128:1572 129:958 130:1438 131:2212 132:778 133:461 134:1622 135:366 136:1490 137:1135 138:2838 139:1587 140:1676 141:1573 142:2185 143:2126 144:1321 145:632 146:2178 147:2110 148:2776 149:2831 150:1290 151:2645 152:2264 153:582 154:8147 155:2204 156:3235 157:2001 158:1400 159:2625 160:3762 161:2000 162:3986 163:2310 164:1957 165:2551 166:1321 167:2123 168:3805 169:776 170:5428 171:1063 172:4473 173:3429 174:905 175:1350 176:3750 177:4736 178:4304 179:2300 180:2893 181:4307 182:3781 183:2593 184:2056 185:21658 186:5407 187:4725 188:4395 189:4463 190:9708 191:1595 192:11411 193:9492 194:7843 195:5577 196:3268 197:3342 198:6106 199:6099 200:8083 201:6380 202:10450 203:10560 204:4595 205:3633 206:4352 207:3710 208:4240 209:5366 210:4694 211:2649 212:4878 213:3961 214:1035 215:53 216:7131 217:3382 218:1574 219:400 220:2199 221:1265 222:763 223:3117 End of report