IPv4 R&E Routing Table Report 23:05 GMT Tue 23 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: 1021057 Prefixes after maximum aggregation (per Origin AS): 393912 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505630 Number of IPv4 prefixes with a valid ROA: 605913 Number of IPv4 prefixes with an invalid ROA: 633 Number of IPv4 prefixes with no ROA: 414511 Total ASes present in the Internet Routing Table: 77611 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66516 Origin ASes announcing only one prefix: 27086 Transit ASes present in the Internet Routing Table: 11095 Transit-only ASes present in the Internet Routing Table: 570 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: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 972 Number of instances of unregistered ASNs: 1001 Number of 32-bit ASNs allocated by the RIRs: 48278 Number of 32-bit ASNs visible in the Routing Table: 39506 Prefixes from 32-bit ASNs in the Routing Table: 219930 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: 712 Number of addresses announced to Internet: 3105159168 Equivalent to 185 /8s, 20 /16s and 248 /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: 333336 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277303 Total APNIC prefixes after maximum aggregation: 80802 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 263705 Unique aggregates announced from the APNIC address blocks: 106371 APNIC Region origin ASes present in the Internet Routing Table: 14917 APNIC Prefixes per ASN: 17.68 APNIC Region origin ASes announcing only one prefix: 4516 APNIC Region transit ASes present in the Internet Routing Table: 2006 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: 10502 Number of APNIC addresses announced to Internet: 753131008 Equivalent to 44 /8s, 227 /16s and 222 /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: 298556 Total ARIN prefixes after maximum aggregation: 134627 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298936 Unique aggregates announced from the ARIN address blocks: 145596 ARIN Region origin ASes present in the Internet Routing Table: 19352 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7067 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: 5418 Number of ARIN addresses announced to Internet: 1343064320 Equivalent to 80 /8s, 13 /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: 282514 Total RIPE prefixes after maximum aggregation: 140029 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283385 Unique aggregates announced from the RIPE address blocks: 184001 RIPE Region origin ASes present in the Internet Routing Table: 29124 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12089 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: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12890 Number of RIPE addresses announced to Internet: 735022080 Equivalent to 43 /8s, 207 /16s and 140 /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: 125463 Total LACNIC prefixes after maximum aggregation: 30859 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121218 Unique aggregates announced from the LACNIC address blocks: 49561 LACNIC Region origin ASes present in the Internet Routing Table: 11325 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2680 LACNIC Region transit ASes present in the Internet Routing Table: 2540 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: 9330 Number of LACNIC addresses announced to Internet: 170375680 Equivalent to 10 /8s, 39 /16s and 186 /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: 36249 Total AfriNIC prefixes after maximum aggregation: 6938 AfriNIC Deaggregation factor: 5.22 Prefixes being announced from the AfriNIC address blocks: 53101 Unique aggregates announced from the AfriNIC address blocks: 19516 AfriNIC Region origin ASes present in the Internet Routing Table: 2000 AfriNIC Prefixes per ASN: 26.55 AfriNIC Region origin ASes announcing only one prefix: 734 AfriNIC Region transit ASes present in the Internet Routing Table: 384 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: 1366 Number of AfriNIC addresses announced to Internet: 103215360 Equivalent to 6 /8s, 38 /16s and 241 /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 13341 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6036 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4633 542 338 BBIL-AP BHARTI Airtel Ltd., IN 18403 4347 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4041 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3726 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3376 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3323 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3173 199 639 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 13974 38459 5439 AMAZON-02, US 22773 4778 3100 367 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 3433 8769 863 COGENT-174, US 396982 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 16625 2857 1223 2141 AKAMAI-AS, US 36352 2707 223 891 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 3954 368 2264 M247, RO 20940 3833 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2564 182 1864 CDNEXT, GB 34984 2421 371 575 TELLCOM-AS, TR 8452 1697 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 12597 3277 590 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2492 507 353 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 1056 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1012 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 1940 402 13 RAYA-AS, EG 36992 1847 1538 336 ETISALAT-MISR, EG 24863 1266 389 16 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1092 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1047 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 562 82 3 KENET-AS, KE 15399 549 56 55 WANANCHI-, KE 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 13974 38459 5439 AMAZON-02, US 9808 13341 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12597 3277 590 UNINET, MX 12479 7285 1711 149 UNI2-AS, ES 7545 6036 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 302 70 ALJAWWALSTC-AS, SA 22773 4778 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 9498 4633 542 338 BBIL-AP BHARTI Airtel Ltd., IN 18403 4347 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 13341 13221 CHINAMOBILE-CN China Mobile Communications Grou 8151 12597 12007 UNINET, MX 12479 7285 7136 UNI2-AS, ES 7545 6036 5457 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 4831 ALJAWWALSTC-AS, SA 22773 4778 4411 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4347 4323 FPT-AS-AP FPT Telecom Company, VN 9498 4633 4295 BBIL-AP BHARTI Airtel Ltd., IN 7552 4041 4012 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 /14:1198 /15:2090 /16:13646 /17:8158 /18:13432 /19:24690 /20:44710 /21:51957 /22:112930 /23:105523 /24:641682 /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 6803 12597 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 3048 4778 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2455 13974 AMAZON-02, US 30036 2323 2666 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) ---------------------------------------------- 1:2450 2:1519 3:978 4:10 5:4980 6:187 7:6 8:1501 9:10 11:172 12:1230 13:599 14:2627 15:417 16:274 17:383 18:913 20:587 21:4 22:188 23:8056 24:2561 25:2 27:2795 29:19 31:3394 32:31 33:1 34:84 35:287 36:4616 37:4511 38:10362 39:1211 40:437 41:4516 42:1920 43:2926 44:408 45:19630 46:5086 47:393 49:2164 50:2055 51:597 52:1272 54:225 55:1133 56:11 57:307 58:2321 59:1340 60:1170 61:3089 62:3100 63:1752 64:5991 65:2122 66:5916 67:3230 68:1501 69:4177 70:1030 71:616 72:3080 74:2923 75:1516 76:597 77:2762 78:1920 79:1796 80:2299 81:2084 82:3879 83:1472 84:2025 85:3652 86:1102 87:2194 88:1358 89:4614 90:835 91:8425 92:2832 93:3016 94:4269 95:4552 96:1430 97:311 98:955 99:784 100:68 101:1338 102:4334 103:32869 104:5444 105:764 106:920 107:2815 108:1208 109:4227 110:2311 111:3982 112:2824 113:1954 114:2092 115:2262 116:2181 117:3173 118:2982 119:2102 120:2412 121:1501 122:2945 123:2286 124:1654 125:2958 126:125 128:1573 129:943 130:1530 131:2258 132:760 133:462 134:1632 135:539 136:1498 137:1211 138:3010 139:1593 140:1767 141:1559 142:2425 143:2106 144:1376 145:625 146:2185 147:2133 148:2785 149:2949 150:1325 151:2581 152:2275 153:800 154:9544 155:2275 156:4685 157:2254 158:1475 159:2726 160:3658 161:1993 162:3982 163:2328 164:1965 165:2658 166:1307 167:2196 168:3734 169:808 170:5451 171:1119 172:4525 173:3430 174:901 175:1353 176:3787 177:4740 178:4313 179:2285 180:2968 181:4350 182:3861 183:2661 184:2025 185:21687 186:5529 187:4765 188:4531 189:4430 190:9658 191:1537 192:11400 193:9500 194:7860 195:5651 196:3299 197:3284 198:6051 199:6116 200:8061 201:6384 202:10472 203:10580 204:4631 205:3707 206:4375 207:3796 208:4334 209:5446 210:4721 211:2681 212:4923 213:4030 214:1065 215:54 216:7106 217:3439 218:1606 219:411 220:2192 221:1290 222:775 223:3235 End of report