IPv4 R&E Routing Table Report 23:05 GMT Mon 15 Sep, 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: 999053 Prefixes after maximum aggregation (per Origin AS): 388136 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 494476 Number of IPv4 prefixes with a valid ROA: 570223 Number of IPv4 prefixes with an invalid ROA: 1024 Number of IPv4 prefixes with no ROA: 427806 Total ASes present in the Internet Routing Table: 77229 Prefixes per ASN: 12.94 Origin-only ASes present in the Internet Routing Table: 66178 Origin ASes announcing only one prefix: 27017 Transit ASes present in the Internet Routing Table: 11051 Transit-only ASes present in the Internet Routing Table: 539 Paths with bogon ASNs present in the IPv4 Routing Table: 27 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 58 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1117 Number of instances of unregistered ASNs: 1147 Number of 32-bit ASNs allocated by the RIRs: 47419 Number of 32-bit ASNs visible in the Routing Table: 38937 Prefixes from 32-bit ASNs in the Routing Table: 210487 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 441 Number of addresses announced to Internet: 3107284480 Equivalent to 185 /8s, 53 /16s and 102 /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: 325145 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 267752 Total APNIC prefixes after maximum aggregation: 79157 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 257889 Unique aggregates announced from the APNIC address blocks: 105646 APNIC Region origin ASes present in the Internet Routing Table: 14767 APNIC Prefixes per ASN: 17.46 APNIC Region origin ASes announcing only one prefix: 4472 APNIC Region transit ASes present in the Internet Routing Table: 1985 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10336 Number of APNIC addresses announced to Internet: 750186752 Equivalent to 44 /8s, 182 /16s and 241 /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: 292255 Total ARIN prefixes after maximum aggregation: 133494 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293736 Unique aggregates announced from the ARIN address blocks: 142513 ARIN Region origin ASes present in the Internet Routing Table: 19280 ARIN Prefixes per ASN: 15.24 ARIN Region origin ASes announcing only one prefix: 7073 ARIN Region transit ASes present in the Internet Routing Table: 1937 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 41 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5331 Number of ARIN addresses announced to Internet: 1349381888 Equivalent to 80 /8s, 109 /16s and 239 /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: 278272 Total RIPE prefixes after maximum aggregation: 137736 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277572 Unique aggregates announced from the RIPE address blocks: 179919 RIPE Region origin ASes present in the Internet Routing Table: 29042 RIPE Prefixes per ASN: 9.56 RIPE Region origin ASes announcing only one prefix: 12103 RIPE Region transit ASes present in the Internet Routing Table: 4009 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 50 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12698 Number of RIPE addresses announced to Internet: 732263936 Equivalent to 43 /8s, 165 /16s and 118 /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: 124638 Total LACNIC prefixes after maximum aggregation: 30196 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 120846 Unique aggregates announced from the LACNIC address blocks: 49481 LACNIC Region origin ASes present in the Internet Routing Table: 11283 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2652 LACNIC Region transit ASes present in the Internet Routing Table: 2528 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9243 Number of LACNIC addresses announced to Internet: 170745344 Equivalent to 10 /8s, 45 /16s and 94 /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: 35019 Total AfriNIC prefixes after maximum aggregation: 6825 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 48569 Unique aggregates announced from the AfriNIC address blocks: 16528 AfriNIC Region origin ASes present in the Internet Routing Table: 1965 AfriNIC Prefixes per ASN: 24.72 AfriNIC Region origin ASes announcing only one prefix: 717 AfriNIC Region transit ASes present in the Internet Routing Table: 385 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1329 Number of AfriNIC addresses announced to Internet: 104463104 Equivalent to 6 /8s, 57 /16s and 251 /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 13277 8729 114 CHINAMOBILE-CN China Mobile Communication 7545 6137 838 614 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4458 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3936 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3706 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3305 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3015 812 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2921 863 509 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2181 427 182 TATACOMM-AS TATA Communications formerly 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 14390 40866 5393 AMAZON-02, US 11492 4735 319 809 CABLEONE, US 22773 3945 3045 316 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3668 1320 81 SHAW, CA 174 3235 8761 871 COGENT-174, US 396982 3230 3858 446 GOOGLE-CLOUD-PLATFORM, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 2999 233 1742 USDA-1, US 16625 2906 1235 2163 AKAMAI-AS, 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 7474 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3911 3395 125 AKAMAI-ASN1, NL 9009 3888 364 2185 M247, RO 12389 3119 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2418 172 1751 CDNEXT, GB 34984 2414 363 573 TELLCOM-AS, TR 203020 1897 226 876 HOSTROYALE, IN 8452 1619 1852 14 TE-AS TE-AS, EG 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 12373 3280 573 UNINET, MX 10620 3493 473 1047 Telmex Colombia S.A., CO 13999 2543 511 348 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1225 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1182 371 22 Telefonica del Peru S.A.A., PE 22884 1059 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1009 2487 55 TIM SA, 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 1821 652 28 RAYA-AS, EG 36992 1507 1498 384 ETISALAT-MISR, EG 29571 1336 102 51 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1246 389 20 LINKdotNET-AS, EG 37069 1084 1096 13 MOBINIL, EG 36935 1066 523 46 Vodafone-, EG 20011 576 154 212 NTT-DATA-Inc, ZA 36914 571 82 3 KENET-AS, KE 15399 549 56 54 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 14390 40866 5393 AMAZON-02, US 9808 13277 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12373 3280 573 UNINET, MX 12479 7474 1711 149 UNI2-AS, ES 7545 6137 838 614 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4735 319 809 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4458 347 26 FPT-AS-AP FPT Telecom Company, VN 22773 3945 3045 316 ASN-CXA-ALL-CCI-22773-RDC, US 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 13277 13163 CHINAMOBILE-CN China Mobile Communications Grou 8151 12373 11800 UNINET, MX 12479 7474 7325 UNI2-AS, ES 7545 6137 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4458 4432 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4735 3926 CABLEONE, US 7552 3936 3909 VIETEL-AS-AP Viettel Group, VN 20940 3911 3786 AKAMAI-ASN1, NL 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 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US 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 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /11:92 /12:297 /13:576 /14:1199 /15:2123 /16:13720 /17:8132 /18:13374 /19:24453 /20:44158 /21:51808 /22:112248 /23:103150 /24:623652 /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 6572 12373 UNINET, MX 12479 6435 7474 UNI2-AS, ES 11492 3550 4735 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3465 3668 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2505 3945 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2444 14390 AMAZON-02, US 30036 2307 2649 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3493 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) ---------------------------------------------- 1:2423 2:1514 3:927 4:10 5:4827 6:157 7:6 8:1544 9:4 11:172 12:1251 13:571 14:2623 15:398 16:303 17:387 18:902 20:571 21:4 22:188 23:7833 24:2651 25:2 27:2794 29:19 31:3359 32:30 33:1 34:84 35:271 36:4363 37:4536 38:9394 39:1030 40:281 41:4348 42:1961 43:2748 44:373 45:18982 46:5090 47:343 49:2013 50:2044 51:592 52:1610 54:371 55:1088 56:11 57:283 58:2280 59:1300 60:1182 61:2915 62:3050 63:1768 64:5627 65:2131 66:4853 67:3083 68:1086 69:3902 70:1038 71:629 72:2881 74:2824 75:1502 76:600 77:2778 78:1900 79:1758 80:2241 81:2080 82:3317 83:1454 84:1967 85:3488 86:1097 87:2112 88:1319 89:4490 90:803 91:8406 92:2775 93:2978 94:4155 95:4432 96:1447 97:312 98:946 99:758 100:71 101:1474 102:4089 103:32911 104:5285 105:777 106:878 107:2654 108:1216 109:4187 110:2252 111:3679 112:2534 113:1844 114:1991 115:2250 116:2094 117:2807 118:3060 119:1956 120:2201 121:1345 122:2784 123:2240 124:1721 125:2920 126:91 128:1558 129:956 130:1274 131:2130 132:781 133:458 134:1601 135:365 136:1485 137:1128 138:2799 139:1598 140:1624 141:1539 142:1911 143:2033 144:1244 145:604 146:2171 147:2110 148:2735 149:2900 150:1277 151:2441 152:2115 153:563 154:7462 155:2051 156:3483 157:2000 158:1431 159:2560 160:3606 161:1949 162:3902 163:2296 164:1914 165:2570 166:1560 167:2081 168:3807 169:774 170:5355 171:1006 172:4230 173:3401 174:898 175:1350 176:3786 177:4719 178:4116 179:2297 180:2750 181:4219 182:3705 183:2536 184:2047 185:21619 186:5397 187:4652 188:4272 189:4365 190:9675 191:1544 192:11379 193:9459 194:7799 195:5564 196:3293 197:3236 198:6093 199:8655 200:8102 201:6336 202:10400 203:10658 204:4549 205:3620 206:4494 207:3521 208:4274 209:5192 210:4683 211:2668 212:4669 213:3852 214:1039 215:52 216:6846 217:3314 218:1460 219:396 220:2155 221:1218 222:749 223:2880 End of report