IPv4 R&E Routing Table Report 23:05 GMT Mon 01 Dec, 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: 1015227 Prefixes after maximum aggregation (per Origin AS): 393088 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 503760 Number of IPv4 prefixes with a valid ROA: 592485 Number of IPv4 prefixes with an invalid ROA: 687 Number of IPv4 prefixes with no ROA: 422055 Total ASes present in the Internet Routing Table: 77502 Prefixes per ASN: 13.10 Origin-only ASes present in the Internet Routing Table: 66425 Origin ASes announcing only one prefix: 27095 Transit ASes present in the Internet Routing Table: 11077 Transit-only ASes present in the Internet Routing Table: 551 Paths with bogon ASNs present in the IPv4 Routing Table: 19 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: 976 Number of instances of unregistered ASNs: 1005 Number of 32-bit ASNs allocated by the RIRs: 48107 Number of 32-bit ASNs visible in the Routing Table: 39364 Prefixes from 32-bit ASNs in the Routing Table: 217400 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: 444 Number of addresses announced to Internet: 3100357632 Equivalent to 184 /8s, 203 /16s and 180 /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: 332335 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274374 Total APNIC prefixes after maximum aggregation: 80902 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 262161 Unique aggregates announced from the APNIC address blocks: 106201 APNIC Region origin ASes present in the Internet Routing Table: 14862 APNIC Prefixes per ASN: 17.64 APNIC Region origin ASes announcing only one prefix: 4491 APNIC Region transit ASes present in the Internet Routing Table: 1995 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: 10443 Number of APNIC addresses announced to Internet: 753018624 Equivalent to 44 /8s, 226 /16s and 39 /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: 297306 Total ARIN prefixes after maximum aggregation: 134207 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296947 Unique aggregates announced from the ARIN address blocks: 145509 ARIN Region origin ASes present in the Internet Routing Table: 19355 ARIN Prefixes per ASN: 15.34 ARIN Region origin ASes announcing only one prefix: 7113 ARIN Region transit ASes present in the Internet Routing Table: 1929 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: 5415 Number of ARIN addresses announced to Internet: 1337367552 Equivalent to 79 /8s, 182 /16s and 156 /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: 281748 Total RIPE prefixes after maximum aggregation: 139817 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282668 Unique aggregates announced from the RIPE address blocks: 183737 RIPE Region origin ASes present in the Internet Routing Table: 29109 RIPE Prefixes per ASN: 9.71 RIPE Region origin ASes announcing only one prefix: 12096 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: 45 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12839 Number of RIPE addresses announced to Internet: 735819520 Equivalent to 43 /8s, 219 /16s and 183 /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: 125453 Total LACNIC prefixes after maximum aggregation: 30601 LACNIC Deaggregation factor: 4.10 Prefixes being announced from the LACNIC address blocks: 121432 Unique aggregates announced from the LACNIC address blocks: 49661 LACNIC Region origin ASes present in the Internet Routing Table: 11315 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: 2542 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: 9311 Number of LACNIC addresses announced to Internet: 170730752 Equivalent to 10 /8s, 45 /16s and 37 /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: 35370 Total AfriNIC prefixes after maximum aggregation: 6904 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 51575 Unique aggregates announced from the AfriNIC address blocks: 18274 AfriNIC Region origin ASes present in the Internet Routing Table: 1995 AfriNIC Prefixes per ASN: 25.85 AfriNIC Region origin ASes announcing only one prefix: 734 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: 1356 Number of AfriNIC addresses announced to Internet: 103191552 Equivalent to 6 /8s, 38 /16s and 148 /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 13496 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6049 832 591 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4585 541 335 BBIL-AP BHARTI Airtel Ltd., IN 18403 4395 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4009 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3711 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3334 828 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3320 1869 100 VNPT-AS-VN VNPT Corp, VN 24560 2947 865 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2510 274 1936 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 14234 37206 5384 AMAZON-02, US 22773 4777 3100 367 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 2869 1229 2148 AKAMAI-AS, US 36352 2827 231 908 AS-COLOCROSSING, US 174 2675 8766 844 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 7287 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4005 376 2280 M247, RO 20940 3864 3394 124 AKAMAI-ASN1, NL 12389 3144 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2535 180 1835 CDNEXT, GB 34984 2422 363 576 TELLCOM-AS, TR 8452 1693 1852 14 TE-AS TE-AS, EG 203020 1613 241 784 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA 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 12678 3301 571 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2509 509 348 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2432 263 Claro NXT Telecomunicacoes Ltda, BR 3816 1348 783 210 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1265 371 22 Telefonica del Peru S.A.A., PE 19037 1142 278 30 AMX Argentina S.A., AR 22884 1054 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 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 1903 594 28 RAYA-AS, EG 36992 1683 1509 399 ETISALAT-MISR, EG 24863 1263 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1085 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 953 522 35 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 569 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 14234 37206 5384 AMAZON-02, US 9808 13496 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12678 3301 571 UNINET, MX 12479 7287 1711 149 UNI2-AS, ES 7545 6049 832 591 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4777 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4585 541 335 BBIL-AP BHARTI Airtel Ltd., IN 18403 4395 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 13496 13379 CHINAMOBILE-CN China Mobile Communications Grou 8151 12678 12107 UNINET, MX 12479 7287 7138 UNI2-AS, ES 7545 6049 5458 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4777 4410 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4395 4371 FPT-AS-AP FPT Telecom Company, VN 9498 4585 4250 BBIL-AP BHARTI Airtel Ltd., IN 7552 4009 3981 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 /13:578 /14:1197 /15:2091 /16:13647 /17:8158 /18:13419 /19:24648 /20:44431 /21:51863 /22:112688 /23:104876 /24:637168 /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 6859 12678 UNINET, MX 12479 6224 7287 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3050 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2433 14234 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) ---------------------------------------------- 1:2446 2:1537 3:972 4:10 5:4950 6:190 7:6 8:1500 9:6 11:172 12:1227 13:570 14:2610 15:413 16:303 17:388 18:912 20:586 21:4 22:188 23:8073 24:2555 25:2 27:2786 29:19 31:3394 32:31 33:1 34:84 35:286 36:4590 37:4459 38:9340 39:1186 40:456 41:4453 42:1950 43:2878 44:398 45:19573 46:5085 47:377 49:2153 50:2050 51:597 52:1567 54:289 55:1108 56:11 57:300 58:2319 59:1347 60:1169 61:3090 62:3092 63:1739 64:5958 65:2126 66:5922 67:3237 68:1497 69:4178 70:1031 71:618 72:3032 74:2925 75:1516 76:599 77:2772 78:1916 79:1769 80:2297 81:2093 82:3812 83:1463 84:1993 85:3638 86:1102 87:2141 88:1340 89:4580 90:842 91:8413 92:2837 93:3006 94:4220 95:4563 96:1447 97:311 98:957 99:775 100:67 101:1342 102:4316 103:32656 104:5498 105:781 106:904 107:2806 108:1195 109:4232 110:2304 111:3894 112:2782 113:1925 114:2096 115:2248 116:2161 117:3124 118:3019 119:2077 120:2367 121:1500 122:2947 123:2285 124:1651 125:2924 126:125 128:1578 129:958 130:1496 131:2245 132:764 133:462 134:1608 135:482 136:1496 137:1138 138:2873 139:1598 140:1727 141:1550 142:2318 143:2136 144:1340 145:630 146:2179 147:2144 148:2775 149:2876 150:1311 151:2638 152:2272 153:723 154:9160 155:2247 156:4088 157:2227 158:1452 159:2666 160:3665 161:1990 162:3992 163:2323 164:1967 165:2601 166:1307 167:2131 168:3865 169:789 170:5451 171:1116 172:4477 173:3416 174:906 175:1353 176:3776 177:4711 178:4303 179:2295 180:2978 181:4302 182:3836 183:2605 184:2036 185:21660 186:5502 187:4763 188:4439 189:4488 190:9707 191:1543 192:11413 193:9496 194:7854 195:5614 196:3242 197:3302 198:6061 199:6091 200:8068 201:6386 202:10431 203:10502 204:4614 205:3650 206:4366 207:3750 208:4246 209:5401 210:4714 211:2675 212:4900 213:3995 214:1045 215:52 216:7112 217:3371 218:1581 219:405 220:2200 221:1282 222:774 223:3176 End of report