IPv4 R&E Routing Table Report 23:00 GMT Mon 12 Jan, 2026 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: 1023652 Prefixes after maximum aggregation (per Origin AS): 394697 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 506541 Number of IPv4 prefixes with a valid ROA: 610153 Number of IPv4 prefixes with an invalid ROA: 659 Number of IPv4 prefixes with no ROA: 412840 Total ASes present in the Internet Routing Table: 77672 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66592 Origin ASes announcing only one prefix: 27112 Transit ASes present in the Internet Routing Table: 11080 Transit-only ASes present in the Internet Routing Table: 565 Paths with bogon ASNs present in the IPv4 Routing Table: 40 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 209 Max AS path prepend of ASN (214570) 200 Prefixes from unregistered ASNs in the Routing Table: 1052 Number of instances of unregistered ASNs: 1081 Number of 32-bit ASNs allocated by the RIRs: 48351 Number of 32-bit ASNs visible in the Routing Table: 39587 Prefixes from 32-bit ASNs in the Routing Table: 220437 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: 546 Number of addresses announced to Internet: 3105028864 Equivalent to 185 /8s, 18 /16s and 251 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 333866 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 278999 Total APNIC prefixes after maximum aggregation: 81398 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 265676 Unique aggregates announced from the APNIC address blocks: 106778 APNIC Region origin ASes present in the Internet Routing Table: 14949 APNIC Prefixes per ASN: 17.77 APNIC Region origin ASes announcing only one prefix: 4526 APNIC Region transit ASes present in the Internet Routing Table: 2009 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10533 Number of APNIC addresses announced to Internet: 753306112 Equivalent to 44 /8s, 230 /16s and 138 /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: 299148 Total ARIN prefixes after maximum aggregation: 134774 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299232 Unique aggregates announced from the ARIN address blocks: 145751 ARIN Region origin ASes present in the Internet Routing Table: 19356 ARIN Prefixes per ASN: 15.46 ARIN Region origin ASes announcing only one prefix: 7070 ARIN Region transit ASes present in the Internet Routing Table: 1916 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 27 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5439 Number of ARIN addresses announced to Internet: 1343981824 Equivalent to 80 /8s, 27 /16s and 137 /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: 282398 Total RIPE prefixes after maximum aggregation: 140018 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283668 Unique aggregates announced from the RIPE address blocks: 184228 RIPE Region origin ASes present in the Internet Routing Table: 29121 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12091 RIPE Region transit ASes present in the Internet Routing Table: 4039 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 209 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12903 Number of RIPE addresses announced to Internet: 733702912 Equivalent to 43 /8s, 187 /16s and 107 /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: 125660 Total LACNIC prefixes after maximum aggregation: 30880 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121449 Unique aggregates announced from the LACNIC address blocks: 49785 LACNIC Region origin ASes present in the Internet Routing Table: 11338 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2686 LACNIC Region transit ASes present in the Internet Routing Table: 2538 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9338 Number of LACNIC addresses announced to Internet: 170540544 Equivalent to 10 /8s, 42 /16s and 62 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + 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: 36395 Total AfriNIC prefixes after maximum aggregation: 6919 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 53081 Unique aggregates announced from the AfriNIC address blocks: 19528 AfriNIC Region origin ASes present in the Internet Routing Table: 2008 AfriNIC Prefixes per ASN: 26.43 AfriNIC Region origin ASes announcing only one prefix: 739 AfriNIC Region transit ASes present in the Internet Routing Table: 383 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 42 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1374 Number of AfriNIC addresses announced to Internet: 103192064 Equivalent to 6 /8s, 38 /16s and 150 /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 13405 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4673 543 337 BBIL-AP BHARTI Airtel Ltd., IN 18403 4354 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4049 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3731 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3410 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3327 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3145 197 613 LCS-AS-AP LARUS Limited, HK 24560 2955 865 497 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 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 14138 38626 5414 AMAZON-02, US 22773 4778 3099 365 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4634 308 1032 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3696 1321 70 SHAW, CA 396982 3326 4868 497 GOOGLE-CLOUD-PLATFORM, US 174 3147 8769 853 COGENT-174, US 749 3143 54729 2394 DNIC-AS-00749, US 16625 2834 1216 2124 AKAMAI-AS, US 36352 2706 222 889 AS-COLOCROSSING, 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 7263 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3922 366 2244 M247, RO 20940 3829 3393 110 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2574 183 1871 CDNEXT, GB 34984 2426 372 578 TELLCOM-AS, TR 8452 1710 1852 14 TE-AS TE-AS, EG 203020 1620 243 799 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 12717 3309 593 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2485 507 353 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1256 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, BR 18881 904 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 1982 638 33 RAYA-AS, EG 36992 1849 1534 341 ETISALAT-MISR, EG 24863 1266 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1125 524 47 Vodafone-, EG 37069 1101 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 566 82 3 KENET-AS, KE 328608 561 48 172 Africa-on-Cloud-AS, ZA 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 14138 38626 5414 AMAZON-02, US 9808 13405 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12717 3309 593 UNINET, MX 12479 7263 1711 149 UNI2-AS, ES 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4778 3099 365 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4673 543 337 BBIL-AP BHARTI Airtel Ltd., IN 11492 4634 308 1032 CABLEONE, US 18403 4354 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 13405 13285 CHINAMOBILE-CN China Mobile Communications Grou 8151 12717 12124 UNINET, MX 12479 7263 7114 UNI2-AS, ES 7545 6027 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4778 4413 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4673 4336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4354 4330 FPT-AS-AP FPT Telecom Company, VN 7552 4049 4020 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE, 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 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 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 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 23.140.216.0/24 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 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 /10:40 /11:93 /12:302 /13:578 /14:1197 /15:2090 /16:13648 /17:8181 /18:13432 /19:24724 /20:44727 /21:51959 /22:113087 /23:105806 /24:643758 /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 6890 12717 UNINET, MX 12479 6194 7263 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4634 CABLEONE, US 6327 3478 3696 SHAW, CA 22773 3049 4778 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2492 14138 AMAZON-02, US 30036 2307 2648 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3434 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) ---------------------------------------------- 1:2482 2:1499 3:990 4:9 5:5009 6:187 7:6 8:1507 9:15 11:172 12:1230 13:630 14:2638 15:418 16:275 17:389 18:916 20:595 21:4 22:188 23:8107 24:2624 25:2 27:2808 29:19 31:3399 32:31 34:84 35:288 36:4626 37:4501 38:9880 39:1237 40:437 41:4503 42:1929 43:2975 44:410 45:19691 46:4986 47:395 49:2167 50:2055 51:598 52:1247 54:232 55:1115 56:11 57:309 58:2317 59:1347 60:1171 61:3125 62:3096 63:1766 64:6119 65:2141 66:5994 67:3253 68:1500 69:4206 70:1030 71:616 72:3079 74:2966 75:1516 76:601 77:2770 78:1922 79:1789 80:2295 81:2082 82:4006 83:1472 84:2028 85:3677 86:1100 87:2207 88:1355 89:4630 90:826 91:8419 92:2846 93:3012 94:4268 95:4522 96:1437 97:311 98:956 99:791 100:69 101:1576 102:4345 103:32912 104:5462 105:773 106:907 107:2815 108:1207 109:4206 110:2310 111:4020 112:3018 113:1970 114:2163 115:2265 116:2168 117:3276 118:2989 119:2109 120:2432 121:1507 122:2953 123:2288 124:1654 125:2973 126:125 128:1570 129:954 130:1539 131:2261 132:764 133:461 134:1628 135:539 136:1609 137:1226 138:2986 139:1603 140:1762 141:1563 142:2443 143:2110 144:1431 145:631 146:2189 147:2171 148:2794 149:2906 150:1325 151:2590 152:2248 153:848 154:9611 155:2315 156:4585 157:2245 158:1487 159:2738 160:3655 161:2000 162:3989 163:2319 164:1969 165:2660 166:1297 167:2199 168:3914 169:807 170:5442 171:1116 172:4553 173:3424 174:894 175:1361 176:3773 177:4691 178:4236 179:2298 180:3114 181:4352 182:3882 183:2703 184:2022 185:21692 186:5504 187:4795 188:4613 189:4478 190:9662 191:1522 192:11421 193:9508 194:7830 195:5674 196:3256 197:3285 198:6068 199:6104 200:8021 201:6390 202:10585 203:10584 204:4666 205:3695 206:4353 207:3814 208:4355 209:5449 210:4731 211:2686 212:4913 213:4038 214:1066 215:54 216:7132 217:3456 218:1619 219:414 220:2191 221:1303 222:875 223:3273 End of report