IPv4 R&E Routing Table Report 23:05 GMT Mon 25 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: 994069 Prefixes after maximum aggregation (per Origin AS): 386288 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 491793 Number of IPv4 prefixes with a valid ROA: 564584 Number of IPv4 prefixes with an invalid ROA: 633 Number of IPv4 prefixes with no ROA: 428852 Total ASes present in the Internet Routing Table: 77149 Prefixes per ASN: 12.89 Origin-only ASes present in the Internet Routing Table: 66100 Origin ASes announcing only one prefix: 27020 Transit ASes present in the Internet Routing Table: 11049 Transit-only ASes present in the Internet Routing Table: 546 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: 91 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1094 Number of instances of unregistered ASNs: 1135 Number of 32-bit ASNs allocated by the RIRs: 47270 Number of 32-bit ASNs visible in the Routing Table: 38818 Prefixes from 32-bit ASNs in the Routing Table: 208640 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: 420 Number of addresses announced to Internet: 3106559232 Equivalent to 185 /8s, 42 /16s and 85 /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: 323459 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265783 Total APNIC prefixes after maximum aggregation: 78715 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256317 Unique aggregates announced from the APNIC address blocks: 105186 APNIC Region origin ASes present in the Internet Routing Table: 14735 APNIC Prefixes per ASN: 17.40 APNIC Region origin ASes announcing only one prefix: 4484 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: 10295 Number of APNIC addresses announced to Internet: 749848576 Equivalent to 44 /8s, 177 /16s and 200 /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: 290903 Total ARIN prefixes after maximum aggregation: 132777 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 292587 Unique aggregates announced from the ARIN address blocks: 142018 ARIN Region origin ASes present in the Internet Routing Table: 19262 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7072 ARIN Region transit ASes present in the Internet Routing Table: 1921 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: 5300 Number of ARIN addresses announced to Internet: 1349011968 Equivalent to 80 /8s, 104 /16s and 74 /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: 277262 Total RIPE prefixes after maximum aggregation: 137043 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276576 Unique aggregates announced from the RIPE address blocks: 179184 RIPE Region origin ASes present in the Internet Routing Table: 29029 RIPE Prefixes per ASN: 9.53 RIPE Region origin ASes announcing only one prefix: 12102 RIPE Region transit ASes present in the Internet Routing Table: 4021 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: 12663 Number of RIPE addresses announced to Internet: 732255744 Equivalent to 43 /8s, 165 /16s and 86 /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: 124264 Total LACNIC prefixes after maximum aggregation: 30253 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120502 Unique aggregates announced from the LACNIC address blocks: 49393 LACNIC Region origin ASes present in the Internet Routing Table: 11279 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2647 LACNIC Region transit ASes present in the Internet Routing Table: 2546 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: 9242 Number of LACNIC addresses announced to Internet: 170735616 Equivalent to 10 /8s, 45 /16s and 56 /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: 34763 Total AfriNIC prefixes after maximum aggregation: 6784 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 47667 Unique aggregates announced from the AfriNIC address blocks: 15644 AfriNIC Region origin ASes present in the Internet Routing Table: 1952 AfriNIC Prefixes per ASN: 24.42 AfriNIC Region origin ASes announcing only one prefix: 715 AfriNIC Region transit ASes present in the Internet Routing Table: 374 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 91 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1318 Number of AfriNIC addresses announced to Internet: 104469248 Equivalent to 6 /8s, 58 /16s and 19 /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 4411 348 27 FPT-AS-AP FPT Telecom Company, VN 7552 3941 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3665 1044 71 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 2180 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 13953 40848 5377 AMAZON-02, US 11492 4742 314 779 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3649 1320 82 SHAW, CA 174 3561 8759 847 COGENT-174, US 22773 3332 3026 159 ASN-CXA-ALL-CCI-22773-RDC, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3219 3858 437 GOOGLE-CLOUD-PLATFORM, US 4155 2953 230 1743 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 7530 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3904 3395 125 AKAMAI-ASN1, NL 9009 3871 366 2189 M247, RO 12389 3117 2315 865 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2405 361 586 TELLCOM-AS, TR 212238 2340 166 1708 CDNEXT, GB 203020 1813 220 836 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 12286 3272 572 UNINET, MX 10620 3483 472 1054 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 1181 371 22 Telefonica del Peru S.A.A., PE 11664 1082 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 972 520 42 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 547 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 13953 40848 5377 AMAZON-02, US 9808 12928 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12286 3272 572 UNINET, MX 12479 7530 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 4411 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 12928 12813 CHINAMOBILE-CN China Mobile Communications Grou 8151 12286 11714 UNINET, MX 12479 7530 7380 UNI2-AS, ES 7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4411 4384 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4742 3963 CABLEONE, US 7552 3941 3914 VIETEL-AS-AP Viettel Group, VN 20940 3904 3779 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 /15:2123 /16:13735 /17:8131 /18:13393 /19:24460 /20:43850 /21:51688 /22:111973 /23:102816 /24:619665 /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 6493 12286 UNINET, MX 12479 6491 7530 UNI2-AS, ES 11492 3555 4742 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3446 3649 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2491 3332 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2368 13953 AMAZON-02, US 30036 2315 2658 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) ---------------------------------------------- 1:2419 2:1504 3:919 4:10 5:4806 6:156 7:6 8:1542 9:4 11:172 12:1255 13:487 14:2607 15:385 16:285 17:379 18:898 20:564 21:4 22:188 23:7804 24:2651 25:2 27:2802 29:19 31:3376 32:29 33:1 34:84 35:261 36:4305 37:4555 38:9254 39:991 40:262 41:4259 42:1951 43:2727 44:379 45:18894 46:5096 47:337 49:1986 50:2056 51:591 52:1556 54:335 55:1111 56:11 57:283 58:2277 59:1288 60:1181 61:2901 62:3022 63:1778 64:5594 65:2142 66:4791 67:3093 68:1066 69:3877 70:1038 71:626 72:2857 74:2799 75:1505 76:601 77:2775 78:1874 79:1737 80:2226 81:2077 82:3252 83:1431 84:1913 85:3472 86:1123 87:2130 88:1318 89:4466 90:776 91:8405 92:2745 93:2967 94:4129 95:4424 96:1446 97:310 98:953 99:712 100:71 101:1474 102:3918 103:32806 104:5273 105:761 106:877 107:2651 108:1228 109:4183 110:2246 111:3584 112:2476 113:1876 114:1977 115:2193 116:2079 117:2705 118:3016 119:1942 120:2205 121:1325 122:2802 123:2222 124:1707 125:2911 126:91 128:1554 129:959 130:1282 131:2059 132:779 133:460 134:1620 135:358 136:1480 137:1119 138:2823 139:1597 140:1615 141:1540 142:1911 143:2014 144:1200 145:588 146:2155 147:2103 148:2712 149:2937 150:1265 151:2390 152:2107 153:558 154:7323 155:1941 156:3243 157:1963 158:1380 159:2536 160:3596 161:1955 162:3892 163:2282 164:1882 165:2498 166:1548 167:2069 168:3871 169:759 170:5247 171:997 172:4241 173:3415 174:904 175:1328 176:3788 177:4762 178:3991 179:2319 180:2730 181:4180 182:3618 183:2364 184:2056 185:21590 186:5317 187:4610 188:4305 189:4315 190:9417 191:1536 192:11331 193:9468 194:7800 195:5640 196:3291 197:3204 198:6095 199:8637 200:8081 201:6378 202:10407 203:10651 204:4815 205:3612 206:4455 207:3508 208:4261 209:5133 210:4664 211:2652 212:4619 213:3822 214:1039 215:51 216:6791 217:3295 218:1437 219:398 220:2144 221:1208 222:747 223:2824 End of report