IPv4 R&E Routing Table Report 23:05 GMT Wed 26 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: 1015473 Prefixes after maximum aggregation (per Origin AS): 393098 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 503607 Number of IPv4 prefixes with a valid ROA: 591949 Number of IPv4 prefixes with an invalid ROA: 801 Number of IPv4 prefixes with no ROA: 422723 Total ASes present in the Internet Routing Table: 77515 Prefixes per ASN: 13.10 Origin-only ASes present in the Internet Routing Table: 66421 Origin ASes announcing only one prefix: 27116 Transit ASes present in the Internet Routing Table: 11094 Transit-only ASes present in the Internet Routing Table: 555 Paths with bogon ASNs present in the IPv4 Routing Table: 23 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: 1016 Number of instances of unregistered ASNs: 1045 Number of 32-bit ASNs allocated by the RIRs: 48051 Number of 32-bit ASNs visible in the Routing Table: 39351 Prefixes from 32-bit ASNs in the Routing Table: 217095 Number of bogon 32-bit ASNs visible in the Routing Table: 78 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 485 Number of addresses announced to Internet: 3099912192 Equivalent to 184 /8s, 196 /16s and 232 /24s Percentage of available address space announced: 83.7 Percentage of allocated address space announced: 83.7 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: 332533 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274426 Total APNIC prefixes after maximum aggregation: 80855 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 261963 Unique aggregates announced from the APNIC address blocks: 106234 APNIC Region origin ASes present in the Internet Routing Table: 14859 APNIC Prefixes per ASN: 17.63 APNIC Region origin ASes announcing only one prefix: 4508 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: 10437 Number of APNIC addresses announced to Internet: 753034752 Equivalent to 44 /8s, 226 /16s and 102 /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: 297048 Total ARIN prefixes after maximum aggregation: 133980 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 297048 Unique aggregates announced from the ARIN address blocks: 145502 ARIN Region origin ASes present in the Internet Routing Table: 19354 ARIN Prefixes per ASN: 15.35 ARIN Region origin ASes announcing only one prefix: 7114 ARIN Region transit ASes present in the Internet Routing Table: 1928 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: 5413 Number of ARIN addresses announced to Internet: 1337502208 Equivalent to 79 /8s, 184 /16s and 170 /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: 281952 Total RIPE prefixes after maximum aggregation: 139961 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 282577 Unique aggregates announced from the RIPE address blocks: 183450 RIPE Region origin ASes present in the Internet Routing Table: 29132 RIPE Prefixes per ASN: 9.70 RIPE Region origin ASes announcing only one prefix: 12107 RIPE Region transit ASes present in the Internet Routing Table: 4041 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 45 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12847 Number of RIPE addresses announced to Internet: 735170560 Equivalent to 43 /8s, 209 /16s and 208 /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: 125383 Total LACNIC prefixes after maximum aggregation: 30745 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121374 Unique aggregates announced from the LACNIC address blocks: 49608 LACNIC Region origin ASes present in the Internet Routing Table: 11302 LACNIC Prefixes per ASN: 10.74 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: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9303 Number of LACNIC addresses announced to Internet: 170742528 Equivalent to 10 /8s, 45 /16s and 83 /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: 35648 Total AfriNIC prefixes after maximum aggregation: 6883 AfriNIC Deaggregation factor: 5.18 Prefixes being announced from the AfriNIC address blocks: 52026 Unique aggregates announced from the AfriNIC address blocks: 18422 AfriNIC Region origin ASes present in the Internet Routing Table: 1988 AfriNIC Prefixes per ASN: 26.17 AfriNIC Region origin ASes announcing only one prefix: 726 AfriNIC Region transit ASes present in the Internet Routing Table: 377 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: 1351 Number of AfriNIC addresses announced to Internet: 103222272 Equivalent to 6 /8s, 39 /16s and 12 /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 13389 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6066 832 592 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4578 541 337 BBIL-AP BHARTI Airtel Ltd., IN 18403 4562 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3990 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3711 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3318 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3314 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2948 865 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2495 157 548 LCS-AS-AP LARUS Limited, HK 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 14207 37206 5394 AMAZON-02, US 22773 4742 3098 366 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3305 4861 483 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2874 1230 2148 AKAMAI-AS, US 36352 2827 231 914 AS-COLOCROSSING, US 174 2673 8765 823 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 7305 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4018 379 2285 M247, RO 20940 3863 3394 124 AKAMAI-ASN1, NL 12389 3144 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2529 180 1829 CDNEXT, GB 34984 2418 363 576 TELLCOM-AS, TR 8452 1698 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1485 169 855 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 12632 3301 571 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2512 510 347 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1371 2432 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1263 371 22 Telefonica del Peru S.A.A., PE 22884 1055 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1015 2486 56 TIM SA, BR 18881 918 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 1986 630 32 RAYA-AS, EG 36992 1683 1509 398 ETISALAT-MISR, EG 24863 1262 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1086 520 31 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 559 82 3 KENET-AS, KE 37342 536 32 1 MOVITEL, MZ 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 14207 37206 5394 AMAZON-02, US 9808 13389 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12632 3301 571 UNINET, MX 12479 7305 1711 149 UNI2-AS, ES 7545 6066 832 592 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4742 3098 366 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4578 541 337 BBIL-AP BHARTI Airtel Ltd., IN 18403 4562 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 13389 13272 CHINAMOBILE-CN China Mobile Communications Grou 8151 12632 12061 UNINET, MX 12479 7305 7156 UNI2-AS, ES 7545 6066 5474 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4562 4538 FPT-AS-AP FPT Telecom Company, VN 22773 4742 4376 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4578 4241 BBIL-AP BHARTI Airtel Ltd., IN 7552 3990 3962 VIETEL-AS-AP Viettel Group, VN 11492 4715 3802 CABLEONE, 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 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 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, 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 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, 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 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 /12:298 /13:577 /14:1196 /15:2089 /16:13649 /17:8159 /18:13415 /19:24651 /20:44457 /21:51881 /22:112797 /23:104913 /24:637226 /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 6821 12632 UNINET, MX 12479 6243 7305 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3015 4742 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2433 14207 AMAZON-02, US 30036 2309 2652 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 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) ---------------------------------------------- 1:2457 2:1540 3:973 4:10 5:4952 6:190 7:6 8:1501 9:6 11:172 12:1233 13:556 14:2607 15:414 16:303 17:388 18:913 20:585 21:4 22:188 23:8069 24:2576 25:2 27:2777 29:19 31:3389 32:31 33:1 34:84 35:284 36:4578 37:4572 38:9330 39:1176 40:456 41:4444 42:2056 43:2877 44:403 45:19534 46:5083 47:377 49:2149 50:2049 51:597 52:1560 54:288 55:1110 56:11 57:300 58:2318 59:1328 60:1185 61:3077 62:3094 63:1742 64:5946 65:2124 66:5880 67:3236 68:1493 69:4182 70:1046 71:619 72:3025 74:2913 75:1519 76:600 77:2764 78:1915 79:1779 80:2297 81:2085 82:3797 83:1461 84:2021 85:3635 86:1101 87:2146 88:1332 89:4610 90:849 91:8425 92:2841 93:3007 94:4213 95:4557 96:1447 97:311 98:958 99:775 100:68 101:1347 102:4303 103:32682 104:5503 105:777 106:903 107:2805 108:1195 109:4242 110:2296 111:3891 112:2770 113:1913 114:2093 115:2247 116:2150 117:3097 118:3081 119:2065 120:2364 121:1499 122:2943 123:2278 124:1650 125:2929 126:125 128:1578 129:961 130:1497 131:2240 132:766 133:462 134:1608 135:389 136:1500 137:1139 138:2874 139:1590 140:1725 141:1546 142:2315 143:2122 144:1327 145:633 146:2179 147:2161 148:2782 149:2884 150:1318 151:2648 152:2276 153:613 154:9323 155:2239 156:4149 157:2215 158:1450 159:2672 160:3665 161:1988 162:3991 163:2317 164:1963 165:2598 166:1308 167:2139 168:3877 169:780 170:5440 171:1111 172:4474 173:3424 174:906 175:1350 176:3764 177:4692 178:4303 179:2316 180:2963 181:4321 182:3829 183:2580 184:2050 185:21698 186:5476 187:4771 188:4430 189:4470 190:9706 191:1542 192:11412 193:9515 194:7854 195:5603 196:3248 197:3303 198:6064 199:6099 200:8084 201:6369 202:10399 203:10506 204:4611 205:3666 206:4380 207:3750 208:4243 209:5411 210:4715 211:2649 212:4896 213:4009 214:1041 215:52 216:7160 217:3348 218:1577 219:405 220:2198 221:1276 222:762 223:3149 End of report