IPv4 R&E Routing Table Report 23:05 GMT Mon 10 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: 1009379 Prefixes after maximum aggregation (per Origin AS): 391320 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 500724 Number of IPv4 prefixes with a valid ROA: 584866 Number of IPv4 prefixes with an invalid ROA: 630 Number of IPv4 prefixes with no ROA: 423883 Total ASes present in the Internet Routing Table: 77433 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66328 Origin ASes announcing only one prefix: 27110 Transit ASes present in the Internet Routing Table: 11105 Transit-only ASes present in the Internet Routing Table: 552 Paths with bogon ASNs present in the IPv4 Routing Table: 27 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: 964 Number of instances of unregistered ASNs: 993 Number of 32-bit ASNs allocated by the RIRs: 47951 Number of 32-bit ASNs visible in the Routing Table: 39249 Prefixes from 32-bit ASNs in the Routing Table: 215454 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 410 Number of addresses announced to Internet: 3102508288 Equivalent to 184 /8s, 236 /16s and 133 /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: 330997 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271188 Total APNIC prefixes after maximum aggregation: 80142 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 261298 Unique aggregates announced from the APNIC address blocks: 106195 APNIC Region origin ASes present in the Internet Routing Table: 14829 APNIC Prefixes per ASN: 17.62 APNIC Region origin ASes announcing only one prefix: 4510 APNIC Region transit ASes present in the Internet Routing Table: 2002 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: 10406 Number of APNIC addresses announced to Internet: 748514304 Equivalent to 44 /8s, 157 /16s and 108 /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: 295936 Total ARIN prefixes after maximum aggregation: 133434 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296197 Unique aggregates announced from the ARIN address blocks: 145209 ARIN Region origin ASes present in the Internet Routing Table: 19352 ARIN Prefixes per ASN: 15.31 ARIN Region origin ASes announcing only one prefix: 7114 ARIN Region transit ASes present in the Internet Routing Table: 1925 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: 1344909056 Equivalent to 80 /8s, 41 /16s and 175 /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: 280833 Total RIPE prefixes after maximum aggregation: 139428 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281187 Unique aggregates announced from the RIPE address blocks: 182181 RIPE Region origin ASes present in the Internet Routing Table: 29087 RIPE Prefixes per ASN: 9.67 RIPE Region origin ASes announcing only one prefix: 12104 RIPE Region transit ASes present in the Internet Routing Table: 4048 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: 12796 Number of RIPE addresses announced to Internet: 735221760 Equivalent to 43 /8s, 210 /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: 125078 Total LACNIC prefixes after maximum aggregation: 30758 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121136 Unique aggregates announced from the LACNIC address blocks: 49599 LACNIC Region origin ASes present in the Internet Routing Table: 11308 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2660 LACNIC Region transit ASes present in the Internet Routing Table: 2564 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: 9294 Number of LACNIC addresses announced to Internet: 170726400 Equivalent to 10 /8s, 45 /16s and 20 /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: 35380 Total AfriNIC prefixes after maximum aggregation: 6898 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 49151 Unique aggregates announced from the AfriNIC address blocks: 17181 AfriNIC Region origin ASes present in the Internet Routing Table: 1985 AfriNIC Prefixes per ASN: 24.76 AfriNIC Region origin ASes announcing only one prefix: 722 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: 1348 Number of AfriNIC addresses announced to Internet: 102915840 Equivalent to 6 /8s, 34 /16s and 95 /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 13393 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6096 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4519 538 314 BBIL-AP BHARTI Airtel Ltd., IN 18403 4468 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3976 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3717 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3317 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2937 863 509 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 14248 37250 5365 AMAZON-02, US 11492 4781 317 802 CABLEONE, US 22773 4637 3092 401 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3688 1320 82 SHAW, CA 396982 3292 4827 475 GOOGLE-CLOUD-PLATFORM, US 749 3215 54766 2466 DNIC-AS-00749, US 16625 2862 1221 2143 AKAMAI-AS, US 36352 2839 231 906 AS-COLOCROSSING, US 30036 2657 366 296 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 7288 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4018 379 2282 M247, RO 20940 3866 3395 125 AKAMAI-ASN1, NL 12389 3143 2317 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2541 179 1832 CDNEXT, GB 34984 2417 363 575 TELLCOM-AS, TR 8452 1681 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1460 166 841 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 12506 3298 577 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2504 511 350 Mega Cable, S.A. de C.V., MX 11830 1988 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 1273 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 363 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 1788 594 28 RAYA-AS, EG 36992 1680 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 1086 1112 11 MOBINIL, EG 36935 984 520 32 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 558 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 14248 37250 5365 AMAZON-02, US 9808 13393 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12506 3298 577 UNINET, MX 12479 7288 1711 149 UNI2-AS, ES 7545 6096 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4781 317 802 CABLEONE, US 22773 4637 3092 401 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4519 538 314 BBIL-AP BHARTI Airtel Ltd., IN 18403 4468 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 13393 13276 CHINAMOBILE-CN China Mobile Communications Grou 8151 12506 11929 UNINET, MX 12479 7288 7139 UNI2-AS, ES 7545 6096 5508 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4468 4444 FPT-AS-AP FPT Telecom Company, VN 22773 4637 4236 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4519 4205 BBIL-AP BHARTI Airtel Ltd., IN 11492 4781 3979 CABLEONE, US 7552 3976 3948 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 /13:578 /14:1193 /15:2090 /16:13636 /17:8134 /18:13397 /19:24581 /20:44252 /21:51793 /22:112373 /23:104615 /24:632272 /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 6712 12506 UNINET, MX 12479 6232 7288 UNI2-AS, ES 11492 3594 4781 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3476 3688 SHAW, CA 22773 2981 4637 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2429 14248 AMAZON-02, US 30036 2313 2657 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) ---------------------------------------------- 1:2436 2:1513 3:968 4:10 5:4922 6:189 7:6 8:1513 9:6 11:172 12:1233 13:552 14:2650 15:408 16:303 17:385 18:909 20:583 21:4 22:188 23:8031 24:2561 25:2 27:2786 29:19 31:3364 32:31 33:1 34:84 35:275 36:4546 37:4577 38:9384 39:1174 40:436 41:4432 42:1989 43:2832 44:400 45:19216 46:5174 47:365 49:2160 50:2050 51:595 52:1624 54:352 55:1091 56:11 57:289 58:2313 59:1318 60:1188 61:3015 62:3103 63:1749 64:5889 65:2125 66:5877 67:3238 68:1489 69:4093 70:1039 71:625 72:2981 74:2885 75:1510 76:600 77:2766 78:1907 79:1785 80:2273 81:2109 82:3591 83:1468 84:2000 85:3573 86:1107 87:2129 88:1314 89:4525 90:831 91:8387 92:2801 93:2979 94:4141 95:4530 96:1461 97:312 98:952 99:759 100:68 101:1486 102:4198 103:32747 104:5434 105:766 106:912 107:2796 108:1194 109:4221 110:2255 111:3857 112:2759 113:1903 114:2088 115:2243 116:2125 117:3096 118:3064 119:2043 120:2343 121:1497 122:2852 123:2263 124:1644 125:2929 126:124 128:1576 129:957 130:1488 131:2220 132:775 133:461 134:1627 135:365 136:1495 137:1136 138:2842 139:1592 140:1693 141:1566 142:2226 143:2125 144:1335 145:629 146:2178 147:2112 148:2771 149:2843 150:1295 151:2644 152:2263 153:589 154:8045 155:2220 156:3219 157:2192 158:1404 159:2631 160:3670 161:2001 162:3980 163:2323 164:1950 165:2552 166:1322 167:2118 168:3819 169:780 170:5447 171:1090 172:4495 173:3429 174:907 175:1352 176:3754 177:4714 178:4285 179:2277 180:2892 181:4320 182:3799 183:2594 184:2064 185:21656 186:5372 187:4711 188:4391 189:4454 190:9698 191:1566 192:11409 193:9498 194:7821 195:5585 196:3263 197:3339 198:6055 199:6097 200:8062 201:6368 202:10444 203:10555 204:4613 205:3641 206:4351 207:3711 208:4270 209:5313 210:4709 211:2648 212:4896 213:3996 214:1038 215:54 216:7133 217:3343 218:1572 219:402 220:2199 221:1266 222:762 223:3118 End of report