IPv4 R&E Routing Table Report 23:05 GMT Fri 22 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: 994234 Prefixes after maximum aggregation (per Origin AS): 386159 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 491936 Number of IPv4 prefixes with a valid ROA: 564662 Number of IPv4 prefixes with an invalid ROA: 627 Number of IPv4 prefixes with no ROA: 428945 Total ASes present in the Internet Routing Table: 77140 Prefixes per ASN: 12.89 Origin-only ASes present in the Internet Routing Table: 66083 Origin ASes announcing only one prefix: 27000 Transit ASes present in the Internet Routing Table: 11057 Transit-only ASes present in the Internet Routing Table: 545 Paths with bogon ASNs present in the IPv4 Routing Table: 29 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 97 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1096 Number of instances of unregistered ASNs: 1137 Number of 32-bit ASNs allocated by the RIRs: 47246 Number of 32-bit ASNs visible in the Routing Table: 38802 Prefixes from 32-bit ASNs in the Routing Table: 208659 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: 425 Number of addresses announced to Internet: 3106445312 Equivalent to 185 /8s, 40 /16s and 152 /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: 323592 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265810 Total APNIC prefixes after maximum aggregation: 78592 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256340 Unique aggregates announced from the APNIC address blocks: 105176 APNIC Region origin ASes present in the Internet Routing Table: 14736 APNIC Prefixes per ASN: 17.40 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: 10296 Number of APNIC addresses announced to Internet: 749800192 Equivalent to 44 /8s, 177 /16s and 11 /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: 290857 Total ARIN prefixes after maximum aggregation: 132766 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 292537 Unique aggregates announced from the ARIN address blocks: 142071 ARIN Region origin ASes present in the Internet Routing Table: 19250 ARIN Prefixes per ASN: 15.20 ARIN Region origin ASes announcing only one prefix: 7061 ARIN Region transit ASes present in the Internet Routing Table: 1920 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5290 Number of ARIN addresses announced to Internet: 1348756736 Equivalent to 80 /8s, 100 /16s and 101 /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: 277510 Total RIPE prefixes after maximum aggregation: 137093 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276730 Unique aggregates announced from the RIPE address blocks: 179187 RIPE Region origin ASes present in the Internet Routing Table: 29031 RIPE Prefixes per ASN: 9.53 RIPE Region origin ASes announcing only one prefix: 12098 RIPE Region transit ASes present in the Internet Routing Table: 4016 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: 12659 Number of RIPE addresses announced to Internet: 732337664 Equivalent to 43 /8s, 166 /16s and 150 /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: 124151 Total LACNIC prefixes after maximum aggregation: 30212 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120390 Unique aggregates announced from the LACNIC address blocks: 49378 LACNIC Region origin ASes present in the Internet Routing Table: 11280 LACNIC Prefixes per ASN: 10.67 LACNIC Region origin ASes announcing only one prefix: 2647 LACNIC Region transit ASes present in the Internet Routing Table: 2554 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: 9241 Number of LACNIC addresses announced to Internet: 170782208 Equivalent to 10 /8s, 45 /16s and 238 /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: 34810 Total AfriNIC prefixes after maximum aggregation: 6776 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 47812 Unique aggregates announced from the AfriNIC address blocks: 15749 AfriNIC Region origin ASes present in the Internet Routing Table: 1950 AfriNIC Prefixes per ASN: 24.52 AfriNIC Region origin ASes announcing only one prefix: 711 AfriNIC Region transit ASes present in the Internet Routing Table: 380 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 89 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1316 Number of AfriNIC addresses announced to Internet: 104528640 Equivalent to 6 /8s, 58 /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 12927 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4505 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 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 2176 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 13969 40847 5364 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 3030 159 ASN-CXA-ALL-CCI-22773-RDC, US 174 3303 8759 846 COGENT-174, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3217 3857 435 GOOGLE-CLOUD-PLATFORM, US 4155 2951 230 1747 USDA-1, US 16625 2902 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 7538 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 2403 361 585 TELLCOM-AS, TR 212238 2335 166 1703 CDNEXT, GB 203020 1797 220 826 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 1182 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 1019 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 1085 1096 13 MOBINIL, EG 36935 991 523 46 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 557 82 3 KENET-AS, KE 15399 546 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 13969 40847 5364 AMAZON-02, US 9808 12927 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12278 3270 570 UNINET, MX 12479 7538 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 18403 4505 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 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 12927 12812 CHINAMOBILE-CN China Mobile Communications Grou 8151 12278 11708 UNINET, MX 12479 7538 7388 UNI2-AS, ES 7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4505 4478 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /11:92 /12:298 /13:576 /14:1198 /15:2125 /16:13733 /17:8147 /18:13411 /19:24454 /20:43926 /21:51714 /22:111946 /23:102822 /24:619721 /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 6499 7538 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 2377 13969 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) ---------------------------------------------- 1:2422 2:1505 3:922 4:10 5:4807 6:158 7:6 8:1545 9:3 11:172 12:1256 13:476 14:2593 15:382 16:285 17:380 18:900 20:564 21:4 22:188 23:7797 24:2655 25:2 27:2818 29:19 31:3369 32:29 33:1 34:84 35:261 36:4305 37:4570 38:9277 39:984 40:261 41:4264 42:2009 43:2745 44:379 45:18860 46:5103 47:337 49:1978 50:2056 51:591 52:1560 54:335 55:1112 56:11 57:283 58:2276 59:1285 60:1178 61:2897 62:3017 63:1774 64:5593 65:2144 66:4794 67:3093 68:1068 69:3881 70:1038 71:628 72:2852 74:2799 75:1505 76:602 77:2776 78:1894 79:1734 80:2229 81:2077 82:3244 83:1446 84:1914 85:3473 86:1124 87:2134 88:1313 89:4474 90:776 91:8408 92:2757 93:2972 94:4140 95:4434 96:1443 97:311 98:953 99:711 100:71 101:1473 102:3904 103:32828 104:5283 105:768 106:876 107:2648 108:1258 109:4187 110:2250 111:3587 112:2474 113:1879 114:1977 115:2192 116:2078 117:2703 118:3028 119:1942 120:2205 121:1325 122:2804 123:2224 124:1708 125:2911 126:91 128:1572 129:956 130:1286 131:2055 132:780 133:460 134:1616 135:357 136:1478 137:1111 138:2827 139:1597 140:1615 141:1538 142:1916 143:1994 144:1207 145:587 146:2175 147:2102 148:2717 149:3015 150:1265 151:2377 152:2107 153:558 154:7377 155:1921 156:3282 157:1963 158:1389 159:2538 160:3603 161:1919 162:3896 163:2275 164:1883 165:2497 166:1547 167:2061 168:3866 169:765 170:5237 171:997 172:4246 173:3413 174:904 175:1327 176:3783 177:4740 178:3985 179:2319 180:2732 181:4175 182:3607 183:2376 184:2056 185:21617 186:5311 187:4574 188:4303 189:4352 190:9412 191:1544 192:11327 193:9468 194:7799 195:5637 196:3286 197:3229 198:6096 199:8639 200:8077 201:6361 202:10403 203:10642 204:4569 205:3612 206:4471 207:3509 208:4274 209:5123 210:4665 211:2651 212:4614 213:3824 214:1041 215:51 216:6786 217:3296 218:1435 219:398 220:2141 221:1208 222:736 223:2825 End of report