IPv4 R&E Routing Table Report 23:05 GMT Sun 24 Aug, 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: 993636 Prefixes after maximum aggregation (per Origin AS): 386368 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 491384 Number of IPv4 prefixes with a valid ROA: 564310 Number of IPv4 prefixes with an invalid ROA: 700 Number of IPv4 prefixes with no ROA: 428626 Total ASes present in the Internet Routing Table: 77144 Prefixes per ASN: 12.88 Origin-only ASes present in the Internet Routing Table: 66090 Origin ASes announcing only one prefix: 27017 Transit ASes present in the Internet Routing Table: 11054 Transit-only ASes present in the Internet Routing Table: 549 Paths with bogon ASNs present in the IPv4 Routing Table: 28 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 57 Max AS path prepend of ASN ( 37447) 53 Prefixes from unregistered ASNs in the Routing Table: 1091 Number of instances of unregistered ASNs: 1132 Number of 32-bit ASNs allocated by the RIRs: 47270 Number of 32-bit ASNs visible in the Routing Table: 38815 Prefixes from 32-bit ASNs in the Routing Table: 208562 Number of bogon 32-bit ASNs visible in the Routing Table: 96 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 418 Number of addresses announced to Internet: 3106466560 Equivalent to 185 /8s, 40 /16s and 235 /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: 323598 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265838 Total APNIC prefixes after maximum aggregation: 78718 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256289 Unique aggregates announced from the APNIC address blocks: 105183 APNIC Region origin ASes present in the Internet Routing Table: 14734 APNIC Prefixes per ASN: 17.39 APNIC Region origin ASes announcing only one prefix: 4483 APNIC Region transit ASes present in the Internet Routing Table: 1994 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: 10294 Number of APNIC addresses announced to Internet: 749817600 Equivalent to 44 /8s, 177 /16s and 79 /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: 290185 Total ARIN prefixes after maximum aggregation: 132835 ARIN Deaggregation factor: 2.18 Prefixes being announced from the ARIN address blocks: 292109 Unique aggregates announced from the ARIN address blocks: 141673 ARIN Region origin ASes present in the Internet Routing Table: 19260 ARIN Prefixes per ASN: 15.17 ARIN Region origin ASes announcing only one prefix: 7072 ARIN Region transit ASes present in the Internet Routing Table: 1923 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5298 Number of ARIN addresses announced to Internet: 1348778752 Equivalent to 80 /8s, 100 /16s and 187 /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: 277496 Total RIPE prefixes after maximum aggregation: 137105 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276719 Unique aggregates announced from the RIPE address blocks: 179203 RIPE Region origin ASes present in the Internet Routing Table: 29025 RIPE Prefixes per ASN: 9.53 RIPE Region origin ASes announcing only one prefix: 12097 RIPE Region transit ASes present in the Internet Routing Table: 4014 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12660 Number of RIPE addresses announced to Internet: 732365056 Equivalent to 43 /8s, 167 /16s and 1 /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: 124252 Total LACNIC prefixes after maximum aggregation: 30217 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120522 Unique aggregates announced from the LACNIC address blocks: 49396 LACNIC Region origin ASes present in the Internet Routing Table: 11281 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2653 LACNIC Region transit ASes present in the Internet Routing Table: 2545 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9246 Number of LACNIC addresses announced to Internet: 170785536 Equivalent to 10 /8s, 45 /16s and 251 /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: 34774 Total AfriNIC prefixes after maximum aggregation: 6780 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 47579 Unique aggregates announced from the AfriNIC address blocks: 15563 AfriNIC Region origin ASes present in the Internet Routing Table: 1951 AfriNIC Prefixes per ASN: 24.39 AfriNIC Region origin ASes announcing only one prefix: 712 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1317 Number of AfriNIC addresses announced to Internet: 104482048 Equivalent to 6 /8s, 58 /16s and 69 /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 12928 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4427 348 27 FPT-AS-AP FPT Telecom Company, VN 7552 3940 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3657 1043 70 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2974 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2919 865 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2178 427 183 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 13957 40848 5369 AMAZON-02, US 11492 4742 314 779 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3648 1320 82 SHAW, CA 22773 3333 3026 159 ASN-CXA-ALL-CCI-22773-RDC, US 174 3305 8759 848 COGENT-174, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3217 3857 435 GOOGLE-CLOUD-PLATFORM, US 4155 2943 229 1744 USDA-1, US 16625 2901 1229 2166 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 7539 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3905 3395 125 AKAMAI-ASN1, NL 9009 3867 366 2187 M247, RO 12389 3112 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2405 361 586 TELLCOM-AS, TR 212238 2335 166 1703 CDNEXT, GB 203020 1807 220 834 HOSTROYALE, IN 13188 1606 100 34 TRIOLAN, UA 8452 1601 1852 14 TE-AS TE-AS, EG 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 12278 3270 570 UNINET, MX 10620 3482 472 1053 Telmex Colombia S.A., CO 13999 2529 511 351 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1369 2432 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1178 371 22 Telefonica del Peru S.A.A., PE 11664 1087 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1054 67 377 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1018 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 1770 660 28 RAYA-AS, EG 29571 1499 94 32 ORANGE-COTE-IVOIRE, CI 36992 1420 1495 374 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1241 389 20 LINKdotNET-AS, EG 37069 1041 1096 13 MOBINIL, EG 36935 990 522 45 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 15399 546 56 54 WANANCHI-, KE 36914 531 82 3 KENET-AS, 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 13957 40848 5369 AMAZON-02, US 9808 12928 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12278 3270 570 UNINET, MX 12479 7539 1711 150 UNI2-AS, ES 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4742 314 779 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4427 348 27 FPT-AS-AP FPT Telecom Company, VN 7552 3940 1332 27 VIETEL-AS-AP Viettel Group, 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 12928 12813 CHINAMOBILE-CN China Mobile Communications Grou 8151 12278 11708 UNINET, MX 12479 7539 7389 UNI2-AS, ES 7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4427 4400 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4742 3963 CABLEONE, US 7552 3940 3913 VIETEL-AS-AP Viettel Group, VN 20940 3905 3780 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 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 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 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, 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 /12:298 /13:576 /14:1198 /15:2124 /16:13736 /17:8145 /18:13409 /19:24462 /20:43875 /21:51714 /22:111973 /23:102854 /24:619109 /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 12479 6500 7539 UNI2-AS, ES 8151 6487 12278 UNINET, MX 11492 3555 4742 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3445 3648 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2492 3333 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2380 13957 AMAZON-02, US 30036 2315 2658 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2202 3482 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) ---------------------------------------------- 1:2418 2:1505 3:919 4:10 5:4813 6:158 7:6 8:1543 9:3 11:172 12:1257 13:475 14:2593 15:384 16:285 17:380 18:900 20:564 21:4 22:188 23:7794 24:2654 25:2 27:2817 29:19 31:3372 32:29 33:1 34:84 35:261 36:4305 37:4558 38:9251 39:991 40:261 41:4269 42:1959 43:2728 44:378 45:18830 46:5101 47:337 49:1980 50:2057 51:591 52:1557 54:335 55:1109 56:11 57:284 58:2277 59:1285 60:1179 61:2896 62:3017 63:1775 64:5597 65:2143 66:4794 67:3093 68:1067 69:3883 70:1039 71:629 72:2855 74:2673 75:1441 76:602 77:2775 78:1893 79:1739 80:2229 81:2078 82:3253 83:1445 84:1914 85:3476 86:1124 87:2133 88:1319 89:4473 90:776 91:8409 92:2760 93:2968 94:4133 95:4433 96:1443 97:311 98:954 99:711 100:71 101:1475 102:3905 103:32828 104:5286 105:768 106:875 107:2650 108:1261 109:4189 110:2247 111:3584 112:2476 113:1876 114:1975 115:2190 116:2083 117:2703 118:3021 119:1942 120:2204 121:1325 122:2801 123:2225 124:1708 125:2911 126:91 128:1574 129:955 130:1287 131:2063 132:775 133:460 134:1616 135:357 136:1481 137:1117 138:2827 139:1597 140:1613 141:1540 142:1915 143:1989 144:1201 145:587 146:2173 147:2102 148:2715 149:3018 150:1265 151:2379 152:2107 153:558 154:7264 155:1921 156:3234 157:1965 158:1387 159:2536 160:3599 161:1919 162:3892 163:2280 164:1881 165:2242 166:1551 167:2066 168:3872 169:761 170:5241 171:997 172:4244 173:3415 174:904 175:1325 176:3784 177:4772 178:3985 179:2351 180:2733 181:4179 182:3609 183:2366 184:2056 185:21602 186:5314 187:4632 188:4305 189:4354 190:9418 191:1530 192:11336 193:9468 194:7794 195:5636 196:3292 197:3204 198:6097 199:8631 200:8064 201:6370 202:10402 203:10644 204:4570 205:3623 206:4462 207:3514 208:4268 209:5121 210:4665 211:2650 212:4616 213:3819 214:1039 215:51 216:6799 217:3299 218:1436 219:398 220:2144 221:1208 222:741 223:2825 End of report