IPv4 R&E Routing Table Report 23:05 GMT Thu 11 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: 1017649 Prefixes after maximum aggregation (per Origin AS): 393328 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504457 Number of IPv4 prefixes with a valid ROA: 602002 Number of IPv4 prefixes with an invalid ROA: 628 Number of IPv4 prefixes with no ROA: 415019 Total ASes present in the Internet Routing Table: 77528 Prefixes per ASN: 13.13 Origin-only ASes present in the Internet Routing Table: 66456 Origin ASes announcing only one prefix: 27117 Transit ASes present in the Internet Routing Table: 11072 Transit-only ASes present in the Internet Routing Table: 555 Paths with bogon ASNs present in the IPv4 Routing Table: 18 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: 1005 Number of instances of unregistered ASNs: 1034 Number of 32-bit ASNs allocated by the RIRs: 48184 Number of 32-bit ASNs visible in the Routing Table: 39418 Prefixes from 32-bit ASNs in the Routing Table: 218676 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: 748 Number of addresses announced to Internet: 3104289792 Equivalent to 185 /8s, 7 /16s and 180 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 332147 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 275403 Total APNIC prefixes after maximum aggregation: 80509 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 262644 Unique aggregates announced from the APNIC address blocks: 106170 APNIC Region origin ASes present in the Internet Routing Table: 14878 APNIC Prefixes per ASN: 17.65 APNIC Region origin ASes announcing only one prefix: 4519 APNIC Region transit ASes present in the Internet Routing Table: 1998 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: 10469 Number of APNIC addresses announced to Internet: 753030144 Equivalent to 44 /8s, 226 /16s and 84 /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: 298109 Total ARIN prefixes after maximum aggregation: 134557 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298185 Unique aggregates announced from the ARIN address blocks: 145735 ARIN Region origin ASes present in the Internet Routing Table: 19340 ARIN Prefixes per ASN: 15.42 ARIN Region origin ASes announcing only one prefix: 7092 ARIN Region transit ASes present in the Internet Routing Table: 1917 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: 5420 Number of ARIN addresses announced to Internet: 1342039808 Equivalent to 79 /8s, 253 /16s and 231 /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: 281885 Total RIPE prefixes after maximum aggregation: 139860 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282667 Unique aggregates announced from the RIPE address blocks: 183534 RIPE Region origin ASes present in the Internet Routing Table: 29120 RIPE Prefixes per ASN: 9.71 RIPE Region origin ASes announcing only one prefix: 12096 RIPE Region transit ASes present in the Internet Routing Table: 4053 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12854 Number of RIPE addresses announced to Internet: 735065088 Equivalent to 43 /8s, 208 /16s and 52 /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: 125424 Total LACNIC prefixes after maximum aggregation: 30798 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121359 Unique aggregates announced from the LACNIC address blocks: 49695 LACNIC Region origin ASes present in the Internet Routing Table: 11316 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2679 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: 9320 Number of LACNIC addresses announced to Internet: 170591488 Equivalent to 10 /8s, 43 /16s and 5 /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: 35823 Total AfriNIC prefixes after maximum aggregation: 6922 AfriNIC Deaggregation factor: 5.18 Prefixes being announced from the AfriNIC address blocks: 52046 Unique aggregates announced from the AfriNIC address blocks: 18710 AfriNIC Region origin ASes present in the Internet Routing Table: 1991 AfriNIC Prefixes per ASN: 26.14 AfriNIC Region origin ASes announcing only one prefix: 731 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: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1355 Number of AfriNIC addresses announced to Internet: 103197696 Equivalent to 6 /8s, 38 /16s and 172 /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 13283 8729 118 CHINAMOBILE-CN China Mobile Communication 7545 6039 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4609 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4537 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4015 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3338 828 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3322 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2954 865 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2511 274 1936 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14173 38433 5403 AMAZON-02, US 22773 4778 3100 368 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 3317 4863 491 GOOGLE-CLOUD-PLATFORM, US 749 3207 54744 2458 DNIC-AS-00749, US 16625 2871 1230 2152 AKAMAI-AS, US 36352 2819 229 905 AS-COLOCROSSING, US 174 2703 8739 867 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 7287 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3940 368 2257 M247, RO 20940 3819 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2541 181 1843 CDNEXT, GB 34984 2420 363 576 TELLCOM-AS, TR 8452 1681 1852 14 TE-AS TE-AS, EG 203020 1616 242 785 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 12680 3296 584 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2511 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1374 2432 267 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1265 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1020 2486 56 TIM SA, BR 18881 906 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 1926 368 14 RAYA-AS, EG 36992 1685 1509 399 ETISALAT-MISR, EG 24863 1262 389 20 LINKdotNET-AS, EG 36903 1249 554 96 MT-MPLS, MA 37069 1084 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1046 519 29 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 566 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 14173 38433 5403 AMAZON-02, US 9808 13283 8729 118 CHINAMOBILE-CN China Mobile Communication 8151 12680 3296 584 UNINET, MX 12479 7287 1711 149 UNI2-AS, ES 7545 6039 834 583 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4778 3100 368 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4609 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4537 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 13283 13165 CHINAMOBILE-CN China Mobile Communications Grou 8151 12680 12096 UNINET, MX 12479 7287 7138 UNI2-AS, ES 7545 6039 5456 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4537 4513 FPT-AS-AP FPT Telecom Company, VN 22773 4778 4410 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4609 4273 BBIL-AP BHARTI Airtel Ltd., IN 7552 4015 3987 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 23.140.180.0/24 Origin: 401371 DEEP-TO-ONE-INC, US 23.140.180.0/24 Transit: 154309 INTELLIGENT1-AS-AP Intelligent Cloud Lim 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, 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 /16:13643 /17:8156 /18:13417 /19:24665 /20:44614 /21:51896 /22:112630 /23:105069 /24:639230 /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 6872 12680 UNINET, MX 12479 6217 7287 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3047 4778 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2425 14173 AMAZON-02, US 30036 2321 2664 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) ---------------------------------------------- 1:2445 2:1532 3:966 4:10 5:4960 6:190 7:6 8:1501 9:6 11:172 12:1231 13:542 14:2611 15:414 16:298 17:388 18:911 20:587 21:4 22:188 23:8048 24:2557 25:2 27:2793 29:19 31:3387 32:31 33:1 34:84 35:287 36:4605 37:4549 38:9933 39:1194 40:430 41:4440 42:2060 43:2888 44:415 45:19599 46:5079 47:394 49:2157 50:2049 51:596 52:1551 54:289 55:1105 56:11 57:301 58:2318 59:1342 60:1171 61:3087 62:3098 63:1739 64:5984 65:2119 66:5875 67:3232 68:1490 69:4175 70:1027 71:618 72:3043 74:2934 75:1517 76:597 77:2769 78:1920 79:1790 80:2301 81:2076 82:3837 83:1469 84:2021 85:3637 86:1109 87:2159 88:1338 89:4582 90:834 91:8413 92:2836 93:3013 94:4230 95:4548 96:1441 97:310 98:951 99:780 100:68 101:1353 102:4276 103:32675 104:5494 105:777 106:915 107:2815 108:1201 109:4232 110:2311 111:3924 112:2787 113:1933 114:2100 115:2262 116:2177 117:3136 118:2993 119:2084 120:2378 121:1497 122:2946 123:2269 124:1651 125:2934 126:125 128:1586 129:952 130:1521 131:2227 132:766 133:462 134:1628 135:524 136:1501 137:1227 138:2986 139:1596 140:1763 141:1553 142:2423 143:2107 144:1368 145:630 146:2183 147:2135 148:2788 149:2878 150:1322 151:2607 152:2268 153:794 154:9279 155:2278 156:4316 157:2237 158:1468 159:2700 160:3668 161:1995 162:4003 163:2325 164:1976 165:2607 166:1303 167:2151 168:3919 169:800 170:5436 171:1114 172:4515 173:3433 174:908 175:1355 176:3766 177:4696 178:4289 179:2275 180:2970 181:4339 182:3840 183:2633 184:2048 185:21630 186:5505 187:4769 188:4454 189:4487 190:9682 191:1533 192:11413 193:9492 194:7848 195:5608 196:3289 197:3260 198:6054 199:6092 200:8077 201:6389 202:10450 203:10483 204:4621 205:3681 206:4360 207:3786 208:4268 209:5392 210:4722 211:2679 212:4886 213:4016 214:1059 215:53 216:7060 217:3378 218:1594 219:406 220:2192 221:1285 222:776 223:3205 End of report