IPv4 R&E Routing Table Report 23:05 GMT Fri 26 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: 1021268 Prefixes after maximum aggregation (per Origin AS): 393697 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505685 Number of IPv4 prefixes with a valid ROA: 608183 Number of IPv4 prefixes with an invalid ROA: 630 Number of IPv4 prefixes with no ROA: 412455 Total ASes present in the Internet Routing Table: 77608 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66500 Origin ASes announcing only one prefix: 27088 Transit ASes present in the Internet Routing Table: 11108 Transit-only ASes present in the Internet Routing Table: 569 Paths with bogon ASNs present in the IPv4 Routing Table: 42 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: 974 Number of instances of unregistered ASNs: 1003 Number of 32-bit ASNs allocated by the RIRs: 48312 Number of 32-bit ASNs visible in the Routing Table: 39503 Prefixes from 32-bit ASNs in the Routing Table: 220045 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: 619 Number of addresses announced to Internet: 3105452288 Equivalent to 185 /8s, 25 /16s and 113 /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: 333523 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277197 Total APNIC prefixes after maximum aggregation: 80704 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 263710 Unique aggregates announced from the APNIC address blocks: 106261 APNIC Region origin ASes present in the Internet Routing Table: 14903 APNIC Prefixes per ASN: 17.70 APNIC Region origin ASes announcing only one prefix: 4514 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: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10486 Number of APNIC addresses announced to Internet: 753068288 Equivalent to 44 /8s, 226 /16s and 233 /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: 298555 Total ARIN prefixes after maximum aggregation: 134625 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298867 Unique aggregates announced from the ARIN address blocks: 145617 ARIN Region origin ASes present in the Internet Routing Table: 19351 ARIN Prefixes per ASN: 15.44 ARIN Region origin ASes announcing only one prefix: 7067 ARIN Region transit ASes present in the Internet Routing Table: 1923 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: 5419 Number of ARIN addresses announced to Internet: 1343065344 Equivalent to 80 /8s, 13 /16s and 141 /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: 282629 Total RIPE prefixes after maximum aggregation: 139991 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283506 Unique aggregates announced from the RIPE address blocks: 184044 RIPE Region origin ASes present in the Internet Routing Table: 29126 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12086 RIPE Region transit ASes present in the Internet Routing Table: 4051 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12894 Number of RIPE addresses announced to Internet: 735287296 Equivalent to 43 /8s, 211 /16s and 152 /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: 125714 Total LACNIC prefixes after maximum aggregation: 30838 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121484 Unique aggregates announced from the LACNIC address blocks: 49752 LACNIC Region origin ASes present in the Internet Routing Table: 11334 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2684 LACNIC Region transit ASes present in the Internet Routing Table: 2549 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: 9337 Number of LACNIC addresses announced to Internet: 170502144 Equivalent to 10 /8s, 41 /16s and 168 /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: 36199 Total AfriNIC prefixes after maximum aggregation: 6884 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 53082 Unique aggregates announced from the AfriNIC address blocks: 19511 AfriNIC Region origin ASes present in the Internet Routing Table: 2003 AfriNIC Prefixes per ASN: 26.50 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: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1367 Number of AfriNIC addresses announced to Internet: 103214592 Equivalent to 6 /8s, 38 /16s and 238 /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 13366 8729 119 CHINAMOBILE-CN China Mobile Communication 7545 6034 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4643 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4326 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4043 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3727 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3391 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3324 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3166 199 633 LCS-AS-AP LARUS Limited, HK 24560 2955 865 496 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 13995 38461 5438 AMAZON-02, US 22773 4745 3098 374 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 82 SHAW, CA 174 3442 8769 863 COGENT-174, US 396982 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 749 3144 54729 2395 DNIC-AS-00749, US 16625 2844 1218 2134 AKAMAI-AS, US 36352 2702 222 888 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 7285 1711 149 UNI2-AS, ES 39891 4901 302 70 ALJAWWALSTC-AS, SA 9009 3961 369 2271 M247, RO 20940 3833 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2567 182 1867 CDNEXT, GB 34984 2419 371 574 TELLCOM-AS, TR 8452 1699 1852 14 TE-AS TE-AS, EG 203020 1617 242 783 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 12641 3277 590 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2487 506 351 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1369 2429 273 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1259 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1013 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 1940 402 13 RAYA-AS, EG 36992 1847 1538 336 ETISALAT-MISR, EG 24863 1264 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1100 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1058 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 563 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 13995 38461 5438 AMAZON-02, US 9808 13366 8729 119 CHINAMOBILE-CN China Mobile Communication 8151 12641 3277 590 UNINET, MX 12479 7285 1711 149 UNI2-AS, ES 7545 6034 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 302 70 ALJAWWALSTC-AS, SA 22773 4745 3098 374 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 9498 4643 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4326 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 13366 13247 CHINAMOBILE-CN China Mobile Communications Grou 8151 12641 12051 UNINET, MX 12479 7285 7136 UNI2-AS, ES 7545 6034 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 4831 ALJAWWALSTC-AS, SA 22773 4745 4371 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4643 4310 BBIL-AP BHARTI Airtel Ltd., IN 18403 4326 4302 FPT-AS-AP FPT Telecom Company, VN 7552 4043 4014 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 21861 UNALLOCATED 12.37.59.0/24 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 /10:41 /11:93 /12:299 /13:578 /14:1199 /15:2091 /16:13645 /17:8161 /18:13429 /19:24697 /20:44703 /21:51946 /22:112928 /23:105502 /24:641926 /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 6846 12641 UNINET, MX 12479 6216 7285 UNI2-AS, ES 39891 3587 4901 ALJAWWALSTC-AS, SA 11492 3533 4688 CABLEONE, US 6327 3478 3690 SHAW, CA 22773 3050 4745 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2456 13995 AMAZON-02, US 30036 2323 2666 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 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) ---------------------------------------------- 1:2449 2:1513 3:978 4:10 5:4983 6:185 7:6 8:1502 9:10 11:172 12:1230 13:600 14:2627 15:417 16:274 17:383 18:914 20:587 21:4 22:188 23:8068 24:2561 25:2 27:2798 29:19 31:3391 32:31 33:1 34:84 35:286 36:4629 37:4513 38:10390 39:1218 40:437 41:4515 42:1910 43:2936 44:411 45:19668 46:5049 47:395 49:2165 50:2056 51:597 52:1257 54:225 55:1124 56:11 57:307 58:2320 59:1343 60:1171 61:3089 62:3102 63:1753 64:5988 65:2123 66:5915 67:3234 68:1502 69:4184 70:1032 71:616 72:3078 74:2924 75:1516 76:598 77:2751 78:1926 79:1797 80:2300 81:2087 82:3929 83:1470 84:2025 85:3646 86:1100 87:2194 88:1358 89:4628 90:836 91:8430 92:2833 93:3001 94:4269 95:4545 96:1431 97:311 98:957 99:784 100:68 101:1339 102:4343 103:32830 104:5462 105:763 106:920 107:2815 108:1209 109:4254 110:2311 111:3992 112:2830 113:1947 114:2092 115:2265 116:2173 117:3123 118:2976 119:2105 120:2421 121:1503 122:2948 123:2277 124:1653 125:2962 126:125 128:1571 129:928 130:1528 131:2242 132:758 133:462 134:1633 135:539 136:1501 137:1207 138:3005 139:1593 140:1773 141:1560 142:2433 143:2125 144:1368 145:626 146:2183 147:2134 148:2788 149:2915 150:1325 151:2575 152:2249 153:820 154:9526 155:2274 156:4721 157:2254 158:1472 159:2727 160:3659 161:1991 162:3981 163:2326 164:1963 165:2651 166:1306 167:2195 168:3909 169:806 170:5455 171:1119 172:4522 173:3420 174:901 175:1353 176:3782 177:4734 178:4317 179:2289 180:2970 181:4351 182:3870 183:2668 184:2038 185:21684 186:5529 187:4773 188:4541 189:4461 190:9673 191:1537 192:11398 193:9510 194:7862 195:5644 196:3252 197:3284 198:6053 199:6106 200:8059 201:6381 202:10476 203:10582 204:4644 205:3697 206:4386 207:3792 208:4342 209:5435 210:4721 211:2681 212:4924 213:4030 214:1061 215:53 216:7105 217:3457 218:1606 219:411 220:2189 221:1295 222:775 223:3238 End of report