IPv4 R&E Routing Table Report 23:00 GMT Tue 13 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: 1023834 Prefixes after maximum aggregation (per Origin AS): 394730 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 506802 Number of IPv4 prefixes with a valid ROA: 610241 Number of IPv4 prefixes with an invalid ROA: 654 Number of IPv4 prefixes with no ROA: 412939 Total ASes present in the Internet Routing Table: 77665 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66571 Origin ASes announcing only one prefix: 27109 Transit ASes present in the Internet Routing Table: 11094 Transit-only ASes present in the Internet Routing Table: 568 Paths with bogon ASNs present in the IPv4 Routing Table: 40 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 209 Max AS path prepend of ASN (214570) 200 Prefixes from unregistered ASNs in the Routing Table: 1043 Number of instances of unregistered ASNs: 1072 Number of 32-bit ASNs allocated by the RIRs: 48355 Number of 32-bit ASNs visible in the Routing Table: 39585 Prefixes from 32-bit ASNs in the Routing Table: 220108 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: 547 Number of addresses announced to Internet: 3105255168 Equivalent to 185 /8s, 22 /16s and 111 /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: 333834 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279579 Total APNIC prefixes after maximum aggregation: 81619 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 265945 Unique aggregates announced from the APNIC address blocks: 106785 APNIC Region origin ASes present in the Internet Routing Table: 14957 APNIC Prefixes per ASN: 17.78 APNIC Region origin ASes announcing only one prefix: 4529 APNIC Region transit ASes present in the Internet Routing Table: 2011 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: 10542 Number of APNIC addresses announced to Internet: 753357312 Equivalent to 44 /8s, 231 /16s and 82 /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: 299261 Total ARIN prefixes after maximum aggregation: 134749 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299351 Unique aggregates announced from the ARIN address blocks: 145814 ARIN Region origin ASes present in the Internet Routing Table: 19363 ARIN Prefixes per ASN: 15.46 ARIN Region origin ASes announcing only one prefix: 7073 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: 27 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5442 Number of ARIN addresses announced to Internet: 1344344576 Equivalent to 80 /8s, 33 /16s and 18 /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: 282289 Total RIPE prefixes after maximum aggregation: 139962 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283836 Unique aggregates announced from the RIPE address blocks: 184508 RIPE Region origin ASes present in the Internet Routing Table: 29107 RIPE Prefixes per ASN: 9.75 RIPE Region origin ASes announcing only one prefix: 12090 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: 12899 Number of RIPE addresses announced to Internet: 733698816 Equivalent to 43 /8s, 187 /16s and 91 /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: 125733 Total LACNIC prefixes after maximum aggregation: 30860 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121538 Unique aggregates announced from the LACNIC address blocks: 49809 LACNIC Region origin ASes present in the Internet Routing Table: 11340 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2680 LACNIC Region transit ASes present in the Internet Routing Table: 2543 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: 9337 Number of LACNIC addresses announced to Internet: 170547200 Equivalent to 10 /8s, 42 /16s and 88 /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: 35929 Total AfriNIC prefixes after maximum aggregation: 6848 AfriNIC Deaggregation factor: 5.25 Prefixes being announced from the AfriNIC address blocks: 52617 Unique aggregates announced from the AfriNIC address blocks: 19414 AfriNIC Region origin ASes present in the Internet Routing Table: 1997 AfriNIC Prefixes per ASN: 26.35 AfriNIC Region origin ASes announcing only one prefix: 737 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: 1365 Number of AfriNIC addresses announced to Internet: 103001600 Equivalent to 6 /8s, 35 /16s and 174 /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 13475 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 4332 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4053 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 3330 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3143 197 611 LCS-AS-AP LARUS Limited, HK 24560 2960 865 500 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 14150 38738 5426 AMAZON-02, US 22773 4778 3099 365 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4635 308 1031 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 3221 8738 853 COGENT-174, US 749 3143 54729 2394 DNIC-AS-00749, US 16625 2834 1216 2124 AKAMAI-AS, US 36352 2707 222 890 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 7259 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3922 367 2246 M247, RO 20940 3828 3393 110 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2574 183 1871 CDNEXT, GB 34984 2424 372 576 TELLCOM-AS, TR 8452 1711 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 12730 3310 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 1374 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1258 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 357 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1013 2486 56 TIM SA, BR 18881 903 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 1850 1534 342 ETISALAT-MISR, EG 24863 1266 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1137 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 561 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 14150 38738 5426 AMAZON-02, US 9808 13475 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12730 3310 593 UNINET, MX 12479 7259 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 4635 308 1031 CABLEONE, US 18403 4332 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 13475 13355 CHINAMOBILE-CN China Mobile Communications Grou 8151 12730 12137 UNINET, MX 12479 7259 7110 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 4332 4308 FPT-AS-AP FPT Telecom Company, VN 7552 4053 4024 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 /15:2089 /16:13653 /17:8179 /18:13433 /19:24731 /20:44707 /21:51956 /22:113136 /23:105778 /24:643932 /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 6899 12730 UNINET, MX 12479 6190 7259 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 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 2500 14150 AMAZON-02, US 30036 2309 2651 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 2:1496 3:989 4:9 5:5012 6:187 7:6 8:1504 9:15 11:172 12:1228 13:627 14:2641 15:417 16:275 17:389 18:915 20:595 21:4 22:188 23:8109 24:2624 25:2 27:2804 29:19 31:3414 32:31 34:84 35:289 36:4620 37:4510 38:9943 39:1243 40:432 41:4486 42:1908 43:2976 44:414 45:19548 46:4982 47:395 49:2168 50:2059 51:598 52:1250 54:232 55:1115 56:11 57:309 58:2317 59:1349 60:1171 61:3124 62:3104 63:1766 64:6114 65:2140 66:6001 67:3257 68:1498 69:4207 70:1031 71:616 72:3077 74:2946 75:1516 76:601 77:2771 78:1918 79:1795 80:2292 81:2075 82:4002 83:1474 84:2028 85:3674 86:1096 87:2211 88:1354 89:4636 90:824 91:8416 92:2863 93:3010 94:4268 95:4522 96:1440 97:311 98:956 99:791 100:69 101:1580 102:4285 103:32918 104:5453 105:768 106:907 107:2816 108:1210 109:4201 110:2309 111:4044 112:3062 113:1970 114:2164 115:2264 116:2172 117:3277 118:2979 119:2110 120:2579 121:1507 122:2954 123:2287 124:1653 125:2973 126:125 128:1571 129:950 130:1543 131:2263 132:764 133:461 134:1626 135:539 136:1612 137:1152 138:2993 139:1606 140:1769 141:1564 142:2468 143:2138 144:1431 145:631 146:2192 147:2268 148:2791 149:2913 150:1330 151:2589 152:2249 153:849 154:9612 155:2280 156:4586 157:2241 158:1488 159:2737 160:3650 161:2000 162:3994 163:2320 164:1969 165:2654 166:1301 167:2199 168:3911 169:833 170:5442 171:1118 172:4556 173:3425 174:894 175:1359 176:3772 177:4701 178:4246 179:2303 180:3111 181:4351 182:3882 183:2731 184:2023 185:21694 186:5509 187:4807 188:4605 189:4481 190:9655 191:1523 192:11420 193:9509 194:7831 195:5680 196:3214 197:3284 198:6076 199:6108 200:8026 201:6403 202:10587 203:10585 204:4667 205:3677 206:4350 207:3814 208:4350 209:5442 210:4729 211:2685 212:4926 213:4032 214:1064 215:54 216:7128 217:3464 218:1620 219:414 220:2191 221:1304 222:875 223:3274 End of report