IPv4 R&E Routing Table Report 23:05 GMT Tue 26 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: 993450 Prefixes after maximum aggregation (per Origin AS): 386289 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 491681 Number of IPv4 prefixes with a valid ROA: 564510 Number of IPv4 prefixes with an invalid ROA: 734 Number of IPv4 prefixes with no ROA: 428206 Total ASes present in the Internet Routing Table: 77130 Prefixes per ASN: 12.88 Origin-only ASes present in the Internet Routing Table: 66068 Origin ASes announcing only one prefix: 27005 Transit ASes present in the Internet Routing Table: 11062 Transit-only ASes present in the Internet Routing Table: 547 Paths with bogon ASNs present in the IPv4 Routing Table: 31 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 83 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1101 Number of instances of unregistered ASNs: 1142 Number of 32-bit ASNs allocated by the RIRs: 47271 Number of 32-bit ASNs visible in the Routing Table: 38812 Prefixes from 32-bit ASNs in the Routing Table: 208851 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: 423 Number of addresses announced to Internet: 3106767872 Equivalent to 185 /8s, 45 /16s and 132 /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: 323734 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265233 Total APNIC prefixes after maximum aggregation: 78630 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 255905 Unique aggregates announced from the APNIC address blocks: 105128 APNIC Region origin ASes present in the Internet Routing Table: 14723 APNIC Prefixes per ASN: 17.38 APNIC Region origin ASes announcing only one prefix: 4474 APNIC Region transit ASes present in the Internet Routing Table: 1989 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: 10287 Number of APNIC addresses announced to Internet: 750012160 Equivalent to 44 /8s, 180 /16s and 71 /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: 290432 Total ARIN prefixes after maximum aggregation: 132774 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 292328 Unique aggregates announced from the ARIN address blocks: 142122 ARIN Region origin ASes present in the Internet Routing Table: 19257 ARIN Prefixes per ASN: 15.18 ARIN Region origin ASes announcing only one prefix: 7071 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: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5301 Number of ARIN addresses announced to Internet: 1349059072 Equivalent to 80 /8s, 105 /16s and 2 /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: 277478 Total RIPE prefixes after maximum aggregation: 137148 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276753 Unique aggregates announced from the RIPE address blocks: 179237 RIPE Region origin ASes present in the Internet Routing Table: 29024 RIPE Prefixes per ASN: 9.54 RIPE Region origin ASes announcing only one prefix: 12094 RIPE Region transit ASes present in the Internet Routing Table: 4026 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: 732268288 Equivalent to 43 /8s, 165 /16s and 135 /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: 124411 Total LACNIC prefixes after maximum aggregation: 30247 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120650 Unique aggregates announced from the LACNIC address blocks: 49365 LACNIC Region origin ASes present in the Internet Routing Table: 11282 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2654 LACNIC Region transit ASes present in the Internet Routing Table: 2547 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: 9246 Number of LACNIC addresses announced to Internet: 170747136 Equivalent to 10 /8s, 45 /16s and 101 /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: 34795 Total AfriNIC prefixes after maximum aggregation: 6769 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 47391 Unique aggregates announced from the AfriNIC address blocks: 15458 AfriNIC Region origin ASes present in the Internet Routing Table: 1951 AfriNIC Prefixes per ASN: 24.29 AfriNIC Region origin ASes announcing only one prefix: 712 AfriNIC Region transit ASes present in the Internet Routing Table: 375 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 83 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1316 Number of AfriNIC addresses announced to Internet: 104442368 Equivalent to 6 /8s, 57 /16s and 170 /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 12918 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 4399 348 27 FPT-AS-AP FPT Telecom Company, VN 7552 3941 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3668 1044 68 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 2912 864 506 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2177 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 14023 40853 5376 AMAZON-02, US 11492 4752 315 781 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3651 1320 82 SHAW, CA 22773 3355 3036 181 ASN-CXA-ALL-CCI-22773-RDC, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3220 3858 438 GOOGLE-CLOUD-PLATFORM, US 174 3179 8759 847 COGENT-174, US 4155 2953 230 1744 USDA-1, US 16625 2902 1229 2167 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 7523 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3906 3395 125 AKAMAI-ASN1, NL 9009 3866 366 2184 M247, RO 12389 3076 2308 864 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2405 361 586 TELLCOM-AS, TR 212238 2340 166 1707 CDNEXT, GB 203020 1825 220 836 HOSTROYALE, IN 13188 1606 100 34 TRIOLAN, UA 8452 1602 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 12289 3272 572 UNINET, MX 10620 3483 472 1054 Telmex Colombia S.A., CO 13999 2530 511 351 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1370 2434 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1350 787 207 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1181 371 22 Telefonica del Peru S.A.A., PE 11664 1089 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1058 67 375 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 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 972 520 42 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 562 82 3 KENET-AS, KE 15399 547 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 14023 40853 5376 AMAZON-02, US 9808 12918 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12289 3272 572 UNINET, MX 12479 7523 1711 150 UNI2-AS, ES 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4752 315 781 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4399 348 27 FPT-AS-AP FPT Telecom Company, VN 7552 3941 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 12918 12804 CHINAMOBILE-CN China Mobile Communications Grou 8151 12289 11717 UNINET, MX 12479 7523 7373 UNI2-AS, ES 7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4399 4372 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4752 3971 CABLEONE, US 7552 3941 3914 VIETEL-AS-AP Viettel Group, VN 20940 3906 3781 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 /14:1199 /15:2123 /16:13732 /17:8134 /18:13394 /19:24466 /20:43885 /21:51704 /22:111997 /23:102819 /24:618960 /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 6496 12289 UNINET, MX 12479 6476 7523 UNI2-AS, ES 11492 3565 4752 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3448 3651 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2504 3355 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2409 14023 AMAZON-02, US 30036 2317 2660 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2203 3483 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) ---------------------------------------------- 1:2416 2:1502 3:919 4:10 5:4816 6:156 7:6 8:1540 9:4 11:172 12:1257 13:486 14:2602 15:387 16:285 17:380 18:903 20:565 21:4 22:188 23:7812 24:2654 25:2 27:2803 29:19 31:3366 32:29 33:1 34:84 35:261 36:4305 37:4547 38:9225 39:991 40:262 41:4269 42:1951 43:2727 44:378 45:18788 46:5103 47:341 49:1979 50:2057 51:591 52:1567 54:338 55:1110 56:11 57:283 58:2278 59:1291 60:1082 61:2862 62:3023 63:1777 64:5573 65:2143 66:4795 67:3095 68:1066 69:3879 70:1037 71:627 72:2857 74:2793 75:1505 76:601 77:2773 78:1892 79:1733 80:2230 81:2078 82:3259 83:1442 84:1913 85:3475 86:1128 87:2129 88:1319 89:4467 90:789 91:8412 92:2759 93:2970 94:4138 95:4434 96:1446 97:310 98:954 99:728 100:71 101:1472 102:3930 103:32790 104:5283 105:759 106:874 107:2651 108:1234 109:4149 110:2247 111:3586 112:2476 113:1841 114:1978 115:2187 116:2076 117:2703 118:3016 119:1947 120:2205 121:1326 122:2802 123:2222 124:1695 125:2909 126:91 128:1557 129:959 130:1281 131:2055 132:777 133:460 134:1619 135:358 136:1481 137:1122 138:2824 139:1599 140:1615 141:1542 142:1906 143:1998 144:1200 145:585 146:2175 147:2101 148:2714 149:2811 150:1264 151:2405 152:2108 153:558 154:7219 155:1944 156:3129 157:1961 158:1387 159:2537 160:3591 161:1955 162:3900 163:2280 164:1882 165:2508 166:1555 167:2069 168:3865 169:777 170:5260 171:997 172:4241 173:3400 174:902 175:1300 176:3787 177:4817 178:3991 179:2312 180:2734 181:4190 182:3620 183:2364 184:2056 185:21604 186:5333 187:4613 188:4304 189:4334 190:9424 191:1534 192:11337 193:9465 194:7803 195:5646 196:3294 197:3218 198:6094 199:8638 200:8089 201:6369 202:10408 203:10615 204:4558 205:3614 206:4453 207:3521 208:4260 209:5151 210:4603 211:2648 212:4621 213:3824 214:1043 215:51 216:6803 217:3288 218:1438 219:398 220:2146 221:1208 222:747 223:2825 End of report