IPv4 R&E Routing Table Report 23:05 GMT Thu 27 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: 1015600 Prefixes after maximum aggregation (per Origin AS): 393128 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 503680 Number of IPv4 prefixes with a valid ROA: 591925 Number of IPv4 prefixes with an invalid ROA: 827 Number of IPv4 prefixes with no ROA: 422848 Total ASes present in the Internet Routing Table: 77496 Prefixes per ASN: 13.11 Origin-only ASes present in the Internet Routing Table: 66418 Origin ASes announcing only one prefix: 27105 Transit ASes present in the Internet Routing Table: 11078 Transit-only ASes present in the Internet Routing Table: 549 Paths with bogon ASNs present in the IPv4 Routing Table: 22 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 68 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 1026 Number of instances of unregistered ASNs: 1055 Number of 32-bit ASNs allocated by the RIRs: 48070 Number of 32-bit ASNs visible in the Routing Table: 39341 Prefixes from 32-bit ASNs in the Routing Table: 217161 Number of bogon 32-bit ASNs visible in the Routing Table: 76 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 491 Number of addresses announced to Internet: 3099913472 Equivalent to 184 /8s, 196 /16s and 237 /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: 332505 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274629 Total APNIC prefixes after maximum aggregation: 80868 APNIC Deaggregation factor: 3.40 Prefixes being announced from the APNIC address blocks: 262202 Unique aggregates announced from the APNIC address blocks: 106229 APNIC Region origin ASes present in the Internet Routing Table: 14850 APNIC Prefixes per ASN: 17.66 APNIC Region origin ASes announcing only one prefix: 4509 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: 10427 Number of APNIC addresses announced to Internet: 753017344 Equivalent to 44 /8s, 226 /16s and 34 /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: 297224 Total ARIN prefixes after maximum aggregation: 134115 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 297011 Unique aggregates announced from the ARIN address blocks: 145515 ARIN Region origin ASes present in the Internet Routing Table: 19351 ARIN Prefixes per ASN: 15.35 ARIN Region origin ASes announcing only one prefix: 7111 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: 5413 Number of ARIN addresses announced to Internet: 1337514752 Equivalent to 79 /8s, 184 /16s and 219 /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: 281689 Total RIPE prefixes after maximum aggregation: 139807 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 282477 Unique aggregates announced from the RIPE address blocks: 183497 RIPE Region origin ASes present in the Internet Routing Table: 29125 RIPE Prefixes per ASN: 9.70 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: 12843 Number of RIPE addresses announced to Internet: 735185664 Equivalent to 43 /8s, 210 /16s and 11 /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: 125428 Total LACNIC prefixes after maximum aggregation: 30769 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121434 Unique aggregates announced from the LACNIC address blocks: 49602 LACNIC Region origin ASes present in the Internet Routing Table: 11306 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2663 LACNIC Region transit ASes present in the Internet Routing Table: 2543 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: 9305 Number of LACNIC addresses announced to Internet: 170727936 Equivalent to 10 /8s, 45 /16s and 26 /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: 35604 Total AfriNIC prefixes after maximum aggregation: 6894 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 51985 Unique aggregates announced from the AfriNIC address blocks: 18439 AfriNIC Region origin ASes present in the Internet Routing Table: 1989 AfriNIC Prefixes per ASN: 26.14 AfriNIC Region origin ASes announcing only one prefix: 726 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: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1353 Number of AfriNIC addresses announced to Internet: 103226112 Equivalent to 6 /8s, 39 /16s and 27 /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 13504 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6066 832 592 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4672 347 24 FPT-AS-AP FPT Telecom Company, VN 9498 4582 541 337 BBIL-AP BHARTI Airtel Ltd., IN 7552 3990 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 99 VNPT-AS-VN VNPT Corp, VN 24560 2948 865 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2496 157 542 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 14226 37207 5387 AMAZON-02, US 22773 4774 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 2874 1230 2148 AKAMAI-AS, US 36352 2827 231 914 AS-COLOCROSSING, US 174 2686 8766 836 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 7297 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4017 379 2285 M247, RO 20940 3865 3394 124 AKAMAI-ASN1, NL 12389 3144 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2537 180 1837 CDNEXT, GB 34984 2419 363 576 TELLCOM-AS, TR 8452 1698 1852 14 TE-AS TE-AS, EG 203020 1610 241 781 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 12645 3301 571 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2511 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 1354 789 207 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1265 371 22 Telefonica del Peru S.A.A., PE 22884 1055 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1016 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 1681 1508 399 ETISALAT-MISR, EG 24863 1264 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 564 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 14226 37207 5387 AMAZON-02, US 9808 13504 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12645 3301 571 UNINET, MX 12479 7297 1711 149 UNI2-AS, ES 7545 6066 832 592 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4774 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 18403 4672 347 24 FPT-AS-AP FPT Telecom Company, VN 9498 4582 541 337 BBIL-AP BHARTI Airtel Ltd., IN 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 13504 13387 CHINAMOBILE-CN China Mobile Communications Grou 8151 12645 12074 UNINET, MX 12479 7297 7148 UNI2-AS, ES 7545 6066 5474 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4672 4648 FPT-AS-AP FPT Telecom Company, VN 22773 4774 4407 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4582 4245 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 /16:13647 /17:8158 /18:13416 /19:24653 /20:44457 /21:51902 /22:112842 /23:104894 /24:637306 /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 6832 12645 UNINET, MX 12479 6234 7297 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3047 4774 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2434 14226 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) ---------------------------------------------- 1:2450 2:1538 3:970 4:10 5:4940 6:190 7:6 8:1500 9:6 11:172 12:1233 13:570 14:2613 15:413 16:303 17:388 18:913 20:584 21:4 22:188 23:8067 24:2555 25:2 27:2777 29:19 31:3388 32:31 33:1 34:84 35:284 36:4596 37:4507 38:9326 39:1188 40:454 41:4449 42:2171 43:2877 44:403 45:19521 46:5083 47:377 49:2151 50:2049 51:597 52:1566 54:289 55:1109 56:11 57:300 58:2324 59:1331 60:1185 61:3081 62:3094 63:1741 64:5959 65:2131 66:5918 67:3232 68:1499 69:4177 70:1030 71:619 72:3040 74:2935 75:1517 76:600 77:2765 78:1917 79:1780 80:2296 81:2088 82:3808 83:1462 84:2020 85:3631 86:1106 87:2145 88:1331 89:4599 90:843 91:8423 92:2836 93:3006 94:4221 95:4557 96:1447 97:311 98:958 99:775 100:68 101:1347 102:4309 103:32649 104:5504 105:777 106:898 107:2805 108:1195 109:4233 110:2302 111:3890 112:2780 113:1918 114:2026 115:2246 116:2159 117:3129 118:3046 119:2074 120:2366 121:1500 122:2944 123:2277 124:1651 125:2925 126:125 128:1578 129:961 130:1497 131:2241 132:766 133:462 134:1611 135:389 136:1500 137:1139 138:2875 139:1592 140:1724 141:1545 142:2318 143:2124 144:1324 145:633 146:2179 147:2162 148:2786 149:2884 150:1316 151:2643 152:2291 153:616 154:9314 155:2248 156:4153 157:2213 158:1450 159:2672 160:3671 161:1989 162:3988 163:2323 164:1964 165:2583 166:1308 167:2142 168:3863 169:786 170:5447 171:1114 172:4473 173:3417 174:906 175:1350 176:3757 177:4700 178:4296 179:2341 180:2963 181:4311 182:3830 183:2606 184:2050 185:21678 186:5524 187:4767 188:4426 189:4483 190:9716 191:1541 192:11411 193:9485 194:7859 195:5611 196:3233 197:3299 198:6058 199:6088 200:8078 201:6383 202:10432 203:10502 204:4607 205:3663 206:4367 207:3744 208:4241 209:5395 210:4716 211:2649 212:4896 213:4009 214:1041 215:52 216:7112 217:3351 218:1581 219:405 220:2200 221:1280 222:764 223:3171 End of report