IPv4 R&E Routing Table Report 23:05 GMT Tue 02 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: 994969 Prefixes after maximum aggregation (per Origin AS): 386828 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 491761 Number of IPv4 prefixes with a valid ROA: 566173 Number of IPv4 prefixes with an invalid ROA: 785 Number of IPv4 prefixes with no ROA: 428011 Total ASes present in the Internet Routing Table: 77141 Prefixes per ASN: 12.90 Origin-only ASes present in the Internet Routing Table: 66094 Origin ASes announcing only one prefix: 26994 Transit ASes present in the Internet Routing Table: 11047 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: 4.7 Max AS path length visible: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1096 Number of instances of unregistered ASNs: 1126 Number of 32-bit ASNs allocated by the RIRs: 47306 Number of 32-bit ASNs visible in the Routing Table: 38826 Prefixes from 32-bit ASNs in the Routing Table: 209403 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: 449 Number of addresses announced to Internet: 3107171072 Equivalent to 185 /8s, 51 /16s and 171 /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: 323960 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265913 Total APNIC prefixes after maximum aggregation: 78716 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256403 Unique aggregates announced from the APNIC address blocks: 105193 APNIC Region origin ASes present in the Internet Routing Table: 14726 APNIC Prefixes per ASN: 17.41 APNIC Region origin ASes announcing only one prefix: 4457 APNIC Region transit ASes present in the Internet Routing Table: 1984 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: 10298 Number of APNIC addresses announced to Internet: 750096640 Equivalent to 44 /8s, 181 /16s and 145 /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: 291183 Total ARIN prefixes after maximum aggregation: 132971 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293300 Unique aggregates announced from the ARIN address blocks: 142347 ARIN Region origin ASes present in the Internet Routing Table: 19260 ARIN Prefixes per ASN: 15.23 ARIN Region origin ASes announcing only one prefix: 7069 ARIN Region transit ASes present in the Internet Routing Table: 1914 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: 5307 Number of ARIN addresses announced to Internet: 1349496576 Equivalent to 80 /8s, 111 /16s and 175 /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: 277803 Total RIPE prefixes after maximum aggregation: 137382 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276991 Unique aggregates announced from the RIPE address blocks: 179139 RIPE Region origin ASes present in the Internet Routing Table: 29028 RIPE Prefixes per ASN: 9.54 RIPE Region origin ASes announcing only one prefix: 12111 RIPE Region transit ASes present in the Internet Routing Table: 4035 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: 12662 Number of RIPE addresses announced to Internet: 731994880 Equivalent to 43 /8s, 161 /16s and 91 /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: 124034 Total LACNIC prefixes after maximum aggregation: 30269 LACNIC Deaggregation factor: 4.10 Prefixes being announced from the LACNIC address blocks: 120259 Unique aggregates announced from the LACNIC address blocks: 49312 LACNIC Region origin ASes present in the Internet Routing Table: 11277 LACNIC Prefixes per ASN: 10.66 LACNIC Region origin ASes announcing only one prefix: 2646 LACNIC Region transit ASes present in the Internet Routing Table: 2533 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: 9242 Number of LACNIC addresses announced to Internet: 170762240 Equivalent to 10 /8s, 45 /16s and 160 /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: 34940 Total AfriNIC prefixes after maximum aggregation: 6769 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 47567 Unique aggregates announced from the AfriNIC address blocks: 15382 AfriNIC Region origin ASes present in the Internet Routing Table: 1952 AfriNIC Prefixes per ASN: 24.37 AfriNIC Region origin ASes announcing only one prefix: 711 AfriNIC Region transit ASes present in the Internet Routing Table: 381 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1317 Number of AfriNIC addresses announced to Internet: 104580096 Equivalent to 6 /8s, 59 /16s and 196 /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 12916 8729 114 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 4384 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3943 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3671 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3300 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2979 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2918 864 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2174 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 14200 40856 5386 AMAZON-02, US 11492 4744 315 801 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3659 1320 82 SHAW, CA 22773 3354 3034 180 ASN-CXA-ALL-CCI-22773-RDC, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3219 3858 437 GOOGLE-CLOUD-PLATFORM, US 174 3067 8759 842 COGENT-174, US 4155 2960 230 1740 USDA-1, US 16625 2911 1236 2170 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 7503 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3901 3395 125 AKAMAI-ASN1, NL 9009 3875 366 2182 M247, RO 12389 3118 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2404 361 585 TELLCOM-AS, TR 212238 2371 169 1727 CDNEXT, GB 203020 1873 225 862 HOSTROYALE, IN 13188 1606 100 34 TRIOLAN, UA 8452 1605 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 12292 3273 574 UNINET, MX 10620 3487 473 1049 Telmex Colombia S.A., CO 13999 2528 511 347 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1369 2432 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1178 371 22 Telefonica del Peru S.A.A., PE 11664 1073 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1056 67 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 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 1765 652 28 RAYA-AS, EG 29571 1498 94 37 ORANGE-COTE-IVOIRE, CI 36992 1424 1495 376 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 24863 1243 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 973 521 43 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 560 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 14200 40856 5386 AMAZON-02, US 9808 12916 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12292 3273 574 UNINET, MX 12479 7503 1711 150 UNI2-AS, ES 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4744 315 801 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4384 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3943 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 12916 12802 CHINAMOBILE-CN China Mobile Communications Grou 8151 12292 11718 UNINET, MX 12479 7503 7353 UNI2-AS, ES 7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4384 4358 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4744 3943 CABLEONE, US 7552 3943 3916 VIETEL-AS-AP Viettel Group, VN 20940 3901 3776 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 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 1782 UNALLOCATED 8.42.19.0/24 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 23.144.196.0/24 Origin: 47689 PUDU Main public network, US 23.144.196.0/24 Transit: 1299 TWELVE99 Arelion, fka Telia Carrier, SE 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 /14:1199 /15:2125 /16:13732 /17:8131 /18:13386 /19:24443 /20:44127 /21:51699 /22:111948 /23:102948 /24:620194 /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 6498 12292 UNINET, MX 12479 6451 7503 UNI2-AS, ES 11492 3560 4744 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3456 3659 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2504 3354 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2390 14200 AMAZON-02, US 30036 2319 2662 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2207 3487 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) ---------------------------------------------- 1:2419 2:1508 3:923 4:10 5:4826 6:156 7:6 8:1540 9:4 11:172 12:1254 13:541 14:2605 15:397 16:302 17:387 18:902 20:568 21:4 22:188 23:7811 24:2658 25:2 27:2801 29:19 31:3359 32:29 33:1 34:84 35:263 36:4304 37:4511 38:9280 39:997 40:264 41:4294 42:1933 43:2733 44:377 45:18847 46:5089 47:342 49:1993 50:2057 51:591 52:1601 54:365 55:1110 56:11 57:283 58:2278 59:1291 60:1181 61:2897 62:3034 63:1771 64:5595 65:2136 66:4808 67:3088 68:1069 69:3884 70:1038 71:627 72:2858 74:2804 75:1504 76:601 77:2771 78:1894 79:1754 80:2225 81:2079 82:3272 83:1445 84:1940 85:3483 86:1124 87:2119 88:1318 89:4485 90:802 91:8411 92:2766 93:2966 94:4166 95:4416 96:1450 97:310 98:949 99:725 100:71 101:1474 102:3980 103:32819 104:5316 105:766 106:876 107:2655 108:1230 109:4179 110:2240 111:3582 112:2474 113:1834 114:1979 115:2186 116:2093 117:2703 118:3023 119:1948 120:2201 121:1328 122:2784 123:2231 124:1711 125:2909 126:91 128:1553 129:961 130:1277 131:2141 132:782 133:459 134:1635 135:366 136:1476 137:1117 138:2825 139:1592 140:1618 141:1545 142:1901 143:2006 144:1214 145:605 146:2178 147:2103 148:2715 149:2911 150:1263 151:2361 152:2108 153:563 154:7256 155:1987 156:3145 157:1959 158:1440 159:2552 160:3577 161:1936 162:3901 163:2283 164:1907 165:2520 166:1555 167:2063 168:3841 169:775 170:5230 171:997 172:4237 173:3406 174:904 175:1326 176:3782 177:4771 178:4022 179:2308 180:2733 181:4197 182:3646 183:2362 184:2055 185:21602 186:5342 187:4603 188:4308 189:4325 190:9415 191:1520 192:11356 193:9471 194:7784 195:5639 196:3284 197:3253 198:6085 199:8641 200:8079 201:6385 202:10417 203:10639 204:4565 205:3619 206:4470 207:3523 208:4267 209:5152 210:4663 211:2649 212:4638 213:3834 214:1045 215:51 216:6815 217:3288 218:1451 219:393 220:2156 221:1208 222:748 223:2825 End of report