IPv4 R&E Routing Table Report 23:05 GMT Tue 25 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: 1014832 Prefixes after maximum aggregation (per Origin AS): 393027 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 503384 Number of IPv4 prefixes with a valid ROA: 591169 Number of IPv4 prefixes with an invalid ROA: 797 Number of IPv4 prefixes with no ROA: 422866 Total ASes present in the Internet Routing Table: 77501 Prefixes per ASN: 13.09 Origin-only ASes present in the Internet Routing Table: 66415 Origin ASes announcing only one prefix: 27087 Transit ASes present in the Internet Routing Table: 11086 Transit-only ASes present in the Internet Routing Table: 553 Paths with bogon ASNs present in the IPv4 Routing Table: 23 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1035 Number of instances of unregistered ASNs: 1064 Number of 32-bit ASNs allocated by the RIRs: 48033 Number of 32-bit ASNs visible in the Routing Table: 39334 Prefixes from 32-bit ASNs in the Routing Table: 216981 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: 489 Number of addresses announced to Internet: 3100402944 Equivalent to 184 /8s, 204 /16s and 101 /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: 332127 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274171 Total APNIC prefixes after maximum aggregation: 80855 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 261740 Unique aggregates announced from the APNIC address blocks: 106237 APNIC Region origin ASes present in the Internet Routing Table: 14853 APNIC Prefixes per ASN: 17.62 APNIC Region origin ASes announcing only one prefix: 4498 APNIC Region transit ASes present in the Internet Routing Table: 2006 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: 10439 Number of APNIC addresses announced to Internet: 753030400 Equivalent to 44 /8s, 226 /16s and 85 /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: 296984 Total ARIN prefixes after maximum aggregation: 133933 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296898 Unique aggregates announced from the ARIN address blocks: 145545 ARIN Region origin ASes present in the Internet Routing Table: 19357 ARIN Prefixes per ASN: 15.34 ARIN Region origin ASes announcing only one prefix: 7115 ARIN Region transit ASes present in the Internet Routing Table: 1924 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: 5411 Number of ARIN addresses announced to Internet: 1337489408 Equivalent to 79 /8s, 184 /16s and 120 /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: 281690 Total RIPE prefixes after maximum aggregation: 139926 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 282384 Unique aggregates announced from the RIPE address blocks: 183332 RIPE Region origin ASes present in the Internet Routing Table: 29119 RIPE Prefixes per ASN: 9.70 RIPE Region origin ASes announcing only one prefix: 12098 RIPE Region transit ASes present in the Internet Routing Table: 4039 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: 12833 Number of RIPE addresses announced to Internet: 735696640 Equivalent to 43 /8s, 217 /16s and 215 /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: 125330 Total LACNIC prefixes after maximum aggregation: 30739 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121347 Unique aggregates announced from the LACNIC address blocks: 49549 LACNIC Region origin ASes present in the Internet Routing Table: 11300 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2651 LACNIC Region transit ASes present in the Internet Routing Table: 2546 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: 9299 Number of LACNIC addresses announced to Internet: 170717952 Equivalent to 10 /8s, 44 /16s and 243 /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: 35622 Total AfriNIC prefixes after maximum aggregation: 6893 AfriNIC Deaggregation factor: 5.17 Prefixes being announced from the AfriNIC address blocks: 51974 Unique aggregates announced from the AfriNIC address blocks: 18328 AfriNIC Region origin ASes present in the Internet Routing Table: 1989 AfriNIC Prefixes per ASN: 26.13 AfriNIC Region origin ASes announcing only one prefix: 725 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: 1352 Number of AfriNIC addresses announced to Internet: 103223808 Equivalent to 6 /8s, 39 /16s and 18 /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 13371 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6066 832 592 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4576 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4457 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3984 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 2491 157 561 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 14200 37204 5385 AMAZON-02, US 11492 4763 316 855 CABLEONE, US 22773 4743 3098 366 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3303 4860 481 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2873 1229 2147 AKAMAI-AS, US 36352 2828 231 909 AS-COLOCROSSING, US 174 2658 8765 817 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 7300 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4012 379 2278 M247, RO 20940 3862 3394 124 AKAMAI-ASN1, NL 12389 3144 2317 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2527 180 1827 CDNEXT, GB 34984 2417 363 575 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 12619 3297 570 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2506 511 346 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1374 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 917 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 1985 630 32 RAYA-AS, EG 36992 1681 1509 397 ETISALAT-MISR, EG 24863 1264 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1104 523 34 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 565 82 3 KENET-AS, KE 15399 550 56 54 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 14200 37204 5385 AMAZON-02, US 9808 13371 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12619 3297 570 UNINET, MX 12479 7300 1711 149 UNI2-AS, ES 7545 6066 832 592 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4763 316 855 CABLEONE, US 22773 4743 3098 366 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4576 541 339 BBIL-AP BHARTI Airtel Ltd., IN 18403 4457 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 13371 13254 CHINAMOBILE-CN China Mobile Communications Grou 8151 12619 12049 UNINET, MX 12479 7300 7151 UNI2-AS, ES 7545 6066 5474 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4457 4433 FPT-AS-AP FPT Telecom Company, VN 22773 4743 4377 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4576 4237 BBIL-AP BHARTI Airtel Ltd., IN 7552 3984 3956 VIETEL-AS-AP Viettel Group, VN 11492 4763 3908 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 23.137.224.0/24 Origin: 29802 HVC-AS, US 23.137.224.0/24 Transit: 174 COGENT-174, US 23.137.225.0/24 Origin: 29802 HVC-AS, US 23.137.225.0/24 Transit: 174 COGENT-174, 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 /13:578 /14:1196 /15:2090 /16:13649 /17:8162 /18:13412 /19:24650 /20:44471 /21:51889 /22:112836 /23:104896 /24:636540 /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 6810 12619 UNINET, MX 12479 6243 7300 UNI2-AS, ES 11492 3590 4763 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3016 4743 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2427 14200 AMAZON-02, US 30036 2310 2653 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) ---------------------------------------------- 1:2459 2:1539 3:973 4:10 5:4956 6:190 7:6 8:1500 9:6 11:172 12:1232 13:564 14:2605 15:413 16:303 17:388 18:905 20:585 21:4 22:188 23:8073 24:2560 25:2 27:2778 29:19 31:3392 32:31 33:1 34:84 35:285 36:4586 37:4565 38:9318 39:1175 40:455 41:4433 42:1958 43:2876 44:403 45:19534 46:5083 47:377 49:2149 50:2048 51:593 52:1567 54:289 55:1099 56:11 57:298 58:2318 59:1328 60:1185 61:3068 62:3085 63:1746 64:5947 65:2121 66:5881 67:3239 68:1493 69:4155 70:1030 71:620 72:3016 74:2917 75:1519 76:599 77:2764 78:1910 79:1783 80:2290 81:2083 82:3742 83:1461 84:2020 85:3596 86:1101 87:2139 88:1333 89:4607 90:838 91:8418 92:2837 93:3005 94:4218 95:4560 96:1455 97:311 98:959 99:775 100:67 101:1346 102:4260 103:32697 104:5502 105:783 106:903 107:2805 108:1196 109:4239 110:2269 111:3881 112:2767 113:1913 114:2095 115:2249 116:2150 117:3091 118:3081 119:2043 120:2359 121:1500 122:2942 123:2283 124:1650 125:2929 126:125 128:1577 129:961 130:1498 131:2238 132:766 133:462 134:1610 135:389 136:1491 137:1137 138:2869 139:1593 140:1725 141:1550 142:2296 143:2129 144:1324 145:634 146:2176 147:2165 148:2794 149:2879 150:1316 151:2653 152:2276 153:612 154:9326 155:2256 156:4124 157:2211 158:1450 159:2671 160:3672 161:1990 162:3992 163:2315 164:1965 165:2599 166:1307 167:2144 168:3857 169:781 170:5418 171:1112 172:4470 173:3422 174:911 175:1352 176:3760 177:4713 178:4313 179:2260 180:2968 181:4324 182:3827 183:2568 184:2058 185:21684 186:5454 187:4736 188:4423 189:4481 190:9676 191:1569 192:11419 193:9512 194:7854 195:5607 196:3245 197:3301 198:6054 199:6100 200:8079 201:6374 202:10395 203:10512 204:4603 205:3657 206:4374 207:3748 208:4239 209:5384 210:4717 211:2648 212:4898 213:4000 214:1039 215:52 216:7107 217:3338 218:1578 219:405 220:2197 221:1276 222:762 223:3150 End of report