IPv4 R&E Routing Table Report 23:05 GMT Wed 13 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: 992757 Prefixes after maximum aggregation (per Origin AS): 384951 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 489031 Number of IPv4 prefixes with a valid ROA: 561052 Number of IPv4 prefixes with an invalid ROA: 814 Number of IPv4 prefixes with no ROA: 430891 Total ASes present in the Internet Routing Table: 77093 Prefixes per ASN: 12.88 Origin-only ASes present in the Internet Routing Table: 66045 Origin ASes announcing only one prefix: 26991 Transit ASes present in the Internet Routing Table: 11048 Transit-only ASes present in the Internet Routing Table: 551 Paths with bogon ASNs present in the IPv4 Routing Table: 28 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 97 Max AS path prepend of ASN ( 37447) 53 Prefixes from unregistered ASNs in the Routing Table: 1149 Number of instances of unregistered ASNs: 1181 Number of 32-bit ASNs allocated by the RIRs: 47119 Number of 32-bit ASNs visible in the Routing Table: 38741 Prefixes from 32-bit ASNs in the Routing Table: 207521 Number of bogon 32-bit ASNs visible in the Routing Table: 82 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 424 Number of addresses announced to Internet: 3107204608 Equivalent to 185 /8s, 52 /16s and 46 /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: 323129 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265425 Total APNIC prefixes after maximum aggregation: 78334 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 256199 Unique aggregates announced from the APNIC address blocks: 105064 APNIC Region origin ASes present in the Internet Routing Table: 14727 APNIC Prefixes per ASN: 17.40 APNIC Region origin ASes announcing only one prefix: 4480 APNIC Region transit ASes present in the Internet Routing Table: 1996 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10284 Number of APNIC addresses announced to Internet: 749520384 Equivalent to 44 /8s, 172 /16s and 198 /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: 290457 Total ARIN prefixes after maximum aggregation: 132384 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 292072 Unique aggregates announced from the ARIN address blocks: 141807 ARIN Region origin ASes present in the Internet Routing Table: 19221 ARIN Prefixes per ASN: 15.20 ARIN Region origin ASes announcing only one prefix: 7046 ARIN Region transit ASes present in the Internet Routing Table: 1929 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: 5273 Number of ARIN addresses announced to Internet: 1349162752 Equivalent to 80 /8s, 106 /16s and 151 /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: 277010 Total RIPE prefixes after maximum aggregation: 136746 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 276083 Unique aggregates announced from the RIPE address blocks: 178615 RIPE Region origin ASes present in the Internet Routing Table: 29003 RIPE Prefixes per ASN: 9.52 RIPE Region origin ASes announcing only one prefix: 12091 RIPE Region transit ASes present in the Internet Routing Table: 4019 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: 12628 Number of RIPE addresses announced to Internet: 732091904 Equivalent to 43 /8s, 162 /16s and 214 /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: 124039 Total LACNIC prefixes after maximum aggregation: 29943 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 120310 Unique aggregates announced from the LACNIC address blocks: 49044 LACNIC Region origin ASes present in the Internet Routing Table: 11281 LACNIC Prefixes per ASN: 10.66 LACNIC Region origin ASes announcing only one prefix: 2669 LACNIC Region transit ASes present in the Internet Routing Table: 2530 Average LACNIC Region AS path length visible: 5.5 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9245 Number of LACNIC addresses announced to Internet: 171053056 Equivalent to 10 /8s, 50 /16s and 16 /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: 34677 Total AfriNIC prefixes after maximum aggregation: 6797 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 47669 Unique aggregates announced from the AfriNIC address blocks: 14123 AfriNIC Region origin ASes present in the Internet Routing Table: 1946 AfriNIC Prefixes per ASN: 24.50 AfriNIC Region origin ASes announcing only one prefix: 705 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: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1311 Number of AfriNIC addresses announced to Internet: 105134848 Equivalent to 6 /8s, 68 /16s and 59 /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 12863 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6138 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4587 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3942 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3711 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3298 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2969 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 865 502 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2177 427 181 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 13801 41095 5309 AMAZON-02, US 11492 4751 315 755 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3645 1320 82 SHAW, CA 174 3517 8737 858 COGENT-174, US 22773 3341 3029 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3207 3858 437 GOOGLE-CLOUD-PLATFORM, US 16625 2907 1224 2168 AKAMAI-AS, US 4155 2888 226 1738 USDA-1, 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 7559 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3905 3395 123 AKAMAI-ASN1, NL 9009 3857 365 2175 M247, RO 12389 3113 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 586 TELLCOM-AS, TR 212238 2329 165 1693 CDNEXT, GB 13188 1605 100 37 TRIOLAN, UA 8452 1581 1852 14 TE-AS TE-AS, EG 203020 1519 191 669 HOSTROYALE, IN 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 12313 3248 586 UNINET, MX 10620 3478 472 1054 Telmex Colombia S.A., CO 13999 2527 511 354 Mega Cable, S.A. de C.V., MX 11830 1943 369 64 Instituto Costarricense de Electricidad y 28573 1371 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1183 371 22 Telefonica del Peru S.A.A., PE 11664 1071 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1054 67 376 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 1421 1501 377 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1242 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 991 523 47 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 575 82 3 KENET-AS, KE 15399 529 56 53 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 13801 41095 5309 AMAZON-02, US 9808 12863 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12313 3248 586 UNINET, MX 12479 7559 1711 149 UNI2-AS, ES 7545 6138 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4751 315 755 CABLEONE, US 18403 4587 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3942 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 12863 12748 CHINAMOBILE-CN China Mobile Communications Grou 8151 12313 11727 UNINET, MX 12479 7559 7410 UNI2-AS, ES 7545 6138 5522 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4587 4560 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4751 3996 CABLEONE, US 7552 3942 3915 VIETEL-AS-AP Viettel Group, VN 20940 3905 3782 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 32182 UNALLOCATED 8.9.96.0/23 174 COGENT-174, US 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 398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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 /13:577 /14:1199 /15:2129 /16:13763 /17:8155 /18:13424 /19:24428 /20:43854 /21:51597 /22:111842 /23:102673 /24:618655 /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 6546 12313 UNINET, MX 12479 6519 7559 UNI2-AS, ES 11492 3565 4751 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3442 3645 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2493 3341 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2355 13801 AMAZON-02, US 30036 2297 2639 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2198 3478 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 2:1494 3:883 4:10 5:4760 6:157 7:6 8:1546 9:3 11:172 12:1257 13:471 14:2583 15:373 16:285 17:378 18:900 20:563 21:4 22:188 23:7748 24:2653 25:2 27:2792 29:19 31:3370 32:29 33:1 34:83 35:262 36:4287 37:4566 38:9516 39:979 40:263 41:4262 42:2057 43:2736 44:380 45:18713 46:5179 47:338 49:1928 50:2040 51:592 52:1553 54:320 55:1086 56:11 57:271 58:2261 59:1293 60:1175 61:2919 62:3010 63:1779 64:5580 65:2147 66:4762 67:3087 68:1077 69:3884 70:1038 71:622 72:2845 74:2805 75:1503 76:603 77:2778 78:1891 79:1732 80:2204 81:2061 82:3247 83:1438 84:1914 85:3449 86:1119 87:2132 88:1309 89:4443 90:774 91:8418 92:2755 93:2954 94:4135 95:4439 96:1443 97:310 98:959 99:705 100:71 101:1470 102:3875 103:32870 104:5266 105:756 106:874 107:2652 108:1259 109:4183 110:2244 111:3572 112:2444 113:1856 114:1977 115:2184 116:2087 117:2693 118:3042 119:1922 120:2203 121:1326 122:2794 123:2225 124:1704 125:2924 126:91 128:1583 129:968 130:1285 131:2051 132:777 133:450 134:1613 135:356 136:1471 137:1132 138:2819 139:1597 140:1615 141:1530 142:1911 143:1971 144:1177 145:583 146:2170 147:2099 148:2705 149:2980 150:1291 151:2348 152:2098 153:527 154:7524 155:1881 156:3189 157:1960 158:1377 159:2520 160:3601 161:1903 162:3885 163:2261 164:1879 165:2464 166:1538 167:2037 168:3883 169:778 170:5205 171:999 172:4228 173:3396 174:904 175:1325 176:3743 177:4726 178:3978 179:2310 180:2732 181:4147 182:3584 183:2380 184:2056 185:21591 186:5232 187:4644 188:4278 189:4330 190:9520 191:1512 192:11305 193:9468 194:7792 195:5619 196:3275 197:3224 198:6089 199:8585 200:8055 201:6340 202:10396 203:10657 204:4578 205:3594 206:4500 207:3510 208:4269 209:5131 210:4667 211:2644 212:4583 213:3821 214:1033 215:52 216:6782 217:3277 218:1430 219:398 220:2146 221:1208 222:742 223:2823 End of report