IPv4 R&E Routing Table Report 23:05 GMT Sat 08 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: 1009116 Prefixes after maximum aggregation (per Origin AS): 391637 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 500943 Number of IPv4 prefixes with a valid ROA: 584873 Number of IPv4 prefixes with an invalid ROA: 631 Number of IPv4 prefixes with no ROA: 423612 Total ASes present in the Internet Routing Table: 77407 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66299 Origin ASes announcing only one prefix: 27081 Transit ASes present in the Internet Routing Table: 11108 Transit-only ASes present in the Internet Routing Table: 551 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: 959 Number of instances of unregistered ASNs: 988 Number of 32-bit ASNs allocated by the RIRs: 47936 Number of 32-bit ASNs visible in the Routing Table: 39229 Prefixes from 32-bit ASNs in the Routing Table: 215282 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: 411 Number of addresses announced to Internet: 3102249984 Equivalent to 184 /8s, 232 /16s and 148 /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: 330930 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271262 Total APNIC prefixes after maximum aggregation: 80380 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 261044 Unique aggregates announced from the APNIC address blocks: 106209 APNIC Region origin ASes present in the Internet Routing Table: 14820 APNIC Prefixes per ASN: 17.61 APNIC Region origin ASes announcing only one prefix: 4500 APNIC Region transit ASes present in the Internet Routing Table: 2003 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: 10401 Number of APNIC addresses announced to Internet: 748503296 Equivalent to 44 /8s, 157 /16s and 65 /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: 296074 Total ARIN prefixes after maximum aggregation: 133514 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296395 Unique aggregates announced from the ARIN address blocks: 145288 ARIN Region origin ASes present in the Internet Routing Table: 19345 ARIN Prefixes per ASN: 15.32 ARIN Region origin ASes announcing only one prefix: 7106 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: 5401 Number of ARIN addresses announced to Internet: 1344784384 Equivalent to 80 /8s, 39 /16s and 200 /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: 280617 Total RIPE prefixes after maximum aggregation: 139424 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281227 Unique aggregates announced from the RIPE address blocks: 182362 RIPE Region origin ASes present in the Internet Routing Table: 29086 RIPE Prefixes per ASN: 9.67 RIPE Region origin ASes announcing only one prefix: 12095 RIPE Region transit ASes present in the Internet Routing Table: 4055 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: 12793 Number of RIPE addresses announced to Internet: 735247360 Equivalent to 43 /8s, 210 /16s and 252 /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: 125002 Total LACNIC prefixes after maximum aggregation: 30761 LACNIC Deaggregation factor: 4.06 Prefixes being announced from the LACNIC address blocks: 121046 Unique aggregates announced from the LACNIC address blocks: 49529 LACNIC Region origin ASes present in the Internet Routing Table: 11307 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2665 LACNIC Region transit ASes present in the Internet Routing Table: 2554 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: 9292 Number of LACNIC addresses announced to Internet: 170611200 Equivalent to 10 /8s, 43 /16s and 82 /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: 35202 Total AfriNIC prefixes after maximum aggregation: 6901 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 48993 Unique aggregates announced from the AfriNIC address blocks: 17195 AfriNIC Region origin ASes present in the Internet Routing Table: 1981 AfriNIC Prefixes per ASN: 24.73 AfriNIC Region origin ASes announcing only one prefix: 715 AfriNIC Region transit ASes present in the Internet Routing Table: 378 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: 1342 Number of AfriNIC addresses announced to Internet: 102882560 Equivalent to 6 /8s, 33 /16s and 221 /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 4519 538 314 BBIL-AP BHARTI Airtel Ltd., IN 18403 4465 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 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 45899 3225 1869 99 VNPT-AS-VN VNPT Corp, VN 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 14301 37220 5384 AMAZON-02, US 11492 4781 317 802 CABLEONE, US 22773 4630 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 3215 54766 2466 DNIC-AS-00749, US 16625 2889 1235 2156 AKAMAI-AS, US 36352 2845 231 913 AS-COLOCROSSING, US 30036 2655 365 299 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 7283 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 1667 1852 14 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 12506 3297 576 UNINET, MX 10620 3455 463 1098 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 67 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1026 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 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 15399 551 57 56 WANANCHI-, KE 36914 548 82 3 KENET-AS, 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 14301 37220 5384 AMAZON-02, US 9808 13392 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12506 3297 576 UNINET, MX 12479 7283 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 4630 3092 401 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4519 538 314 BBIL-AP BHARTI Airtel Ltd., IN 18403 4465 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 12506 11930 UNINET, MX 12479 7283 7134 UNI2-AS, ES 7545 6092 5504 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4465 4441 FPT-AS-AP FPT Telecom Company, VN 22773 4630 4229 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4519 4205 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 /15:2089 /16:13634 /17:8136 /18:13399 /19:24578 /20:44213 /21:51813 /22:112337 /23:104609 /24:632073 /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 6715 12506 UNINET, MX 12479 6227 7283 UNI2-AS, ES 11492 3594 4781 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3475 3687 SHAW, CA 22773 2974 4630 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2451 14301 AMAZON-02, US 30036 2312 2655 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) ---------------------------------------------- 1:2432 2:1522 3:970 4:10 5:4937 6:189 7:6 8:1507 9:6 11:172 12:1230 13:561 14:2645 15:405 16:303 17:385 18:910 20:581 21:4 22:188 23:8036 24:2561 25:2 27:2787 29:19 31:3360 32:31 33:1 34:84 35:275 36:4513 37:4574 38:9367 39:1174 40:467 41:4353 42:1978 43:2827 44:398 45:19221 46:5184 47:365 49:2158 50:2051 51:595 52:1625 54:357 55:1096 56:11 57:288 58:2316 59:1321 60:1188 61:3016 62:3104 63:1752 64:5890 65:2130 66:5879 67:3236 68:1489 69:4118 70:1037 71:625 72:2999 74:2882 75:1511 76:600 77:2775 78:1905 79:1791 80:2276 81:2124 82:3587 83:1464 84:2002 85:3574 86:1107 87:2135 88:1329 89:4509 90:831 91:8397 92:2826 93:2978 94:4139 95:4538 96:1462 97:312 98:951 99:768 100:68 101:1485 102:4203 103:32761 104:5461 105:766 106:912 107:2796 108:1195 109:4209 110:2255 111:3863 112:2758 113:1897 114:2088 115:2248 116:2126 117:3098 118:3063 119:2043 120:2338 121:1497 122:2852 123:2265 124:1644 125:2925 126:125 128:1571 129:957 130:1482 131:2211 132:774 133:461 134:1626 135:365 136:1489 137:1134 138:2833 139:1594 140:1690 141:1571 142:2226 143:2121 144:1331 145:633 146:2181 147:2111 148:2777 149:2827 150:1293 151:2650 152:2263 153:589 154:8050 155:2220 156:3236 157:2100 158:1403 159:2630 160:3663 161:1998 162:3993 163:2324 164:1950 165:2553 166:1320 167:2123 168:3810 169:778 170:5444 171:1066 172:4501 173:3429 174:905 175:1354 176:3757 177:4724 178:4298 179:2277 180:2891 181:4319 182:3804 183:2595 184:2062 185:21652 186:5378 187:4731 188:4386 189:4449 190:9699 191:1538 192:11412 193:9496 194:7819 195:5586 196:3281 197:3237 198:6048 199:6083 200:8026 201:6370 202:10456 203:10551 204:4614 205:3645 206:4357 207:3713 208:4267 209:5316 210:4689 211:2646 212:4886 213:3966 214:1037 215:54 216:7131 217:3353 218:1572 219:402 220:2200 221:1266 222:762 223:3127 End of report