IPv4 R&E Routing Table Report 23:05 GMT Sun 21 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: 1000701 Prefixes after maximum aggregation (per Origin AS): 388678 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 495098 Number of IPv4 prefixes with a valid ROA: 571254 Number of IPv4 prefixes with an invalid ROA: 955 Number of IPv4 prefixes with no ROA: 428492 Total ASes present in the Internet Routing Table: 77253 Prefixes per ASN: 12.95 Origin-only ASes present in the Internet Routing Table: 66220 Origin ASes announcing only one prefix: 27042 Transit ASes present in the Internet Routing Table: 11033 Transit-only ASes present in the Internet Routing Table: 542 Paths with bogon ASNs present in the IPv4 Routing Table: 31 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 58 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1086 Number of instances of unregistered ASNs: 1117 Number of 32-bit ASNs allocated by the RIRs: 47520 Number of 32-bit ASNs visible in the Routing Table: 38959 Prefixes from 32-bit ASNs in the Routing Table: 211028 Number of bogon 32-bit ASNs visible in the Routing Table: 78 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 429 Number of addresses announced to Internet: 3111640576 Equivalent to 185 /8s, 119 /16s and 222 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 325773 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 268407 Total APNIC prefixes after maximum aggregation: 79161 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 258594 Unique aggregates announced from the APNIC address blocks: 105700 APNIC Region origin ASes present in the Internet Routing Table: 14761 APNIC Prefixes per ASN: 17.52 APNIC Region origin ASes announcing only one prefix: 4462 APNIC Region transit ASes present in the Internet Routing Table: 1982 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: 10328 Number of APNIC addresses announced to Internet: 750536704 Equivalent to 44 /8s, 188 /16s and 72 /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: 292835 Total ARIN prefixes after maximum aggregation: 133749 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 294206 Unique aggregates announced from the ARIN address blocks: 142717 ARIN Region origin ASes present in the Internet Routing Table: 19290 ARIN Prefixes per ASN: 15.25 ARIN Region origin ASes announcing only one prefix: 7081 ARIN Region transit ASes present in the Internet Routing Table: 1935 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 41 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5332 Number of ARIN addresses announced to Internet: 1353316096 Equivalent to 80 /8s, 169 /16s and 247 /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: 278651 Total RIPE prefixes after maximum aggregation: 138028 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277944 Unique aggregates announced from the RIPE address blocks: 180159 RIPE Region origin ASes present in the Internet Routing Table: 29060 RIPE Prefixes per ASN: 9.56 RIPE Region origin ASes announcing only one prefix: 12112 RIPE Region transit ASes present in the Internet Routing Table: 4006 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: 12715 Number of RIPE addresses announced to Internet: 732537088 Equivalent to 43 /8s, 169 /16s and 161 /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: 124792 Total LACNIC prefixes after maximum aggregation: 30211 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121032 Unique aggregates announced from the LACNIC address blocks: 49452 LACNIC Region origin ASes present in the Internet Routing Table: 11290 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2673 LACNIC Region transit ASes present in the Internet Routing Table: 2521 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: 9255 Number of LACNIC addresses announced to Internet: 170712064 Equivalent to 10 /8s, 44 /16s and 220 /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: 34930 Total AfriNIC prefixes after maximum aggregation: 6820 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 48496 Unique aggregates announced from the AfriNIC address blocks: 16693 AfriNIC Region origin ASes present in the Internet Routing Table: 1962 AfriNIC Prefixes per ASN: 24.72 AfriNIC Region origin ASes announcing only one prefix: 714 AfriNIC Region transit ASes present in the Internet Routing Table: 380 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1329 Number of AfriNIC addresses announced to Internet: 104305664 Equivalent to 6 /8s, 55 /16s and 148 /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 13502 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6161 837 601 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4468 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4454 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3941 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3737 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3302 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3079 828 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 863 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2180 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 14415 40908 5403 AMAZON-02, US 11492 4737 320 807 CABLEONE, US 22773 3945 3044 314 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3677 1320 81 SHAW, CA 396982 3265 4824 459 GOOGLE-CLOUD-PLATFORM, US 174 3253 8771 875 COGENT-174, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3032 235 1725 USDA-1, US 16625 2917 1237 2173 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 7460 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 9009 3946 370 2218 M247, RO 20940 3908 3395 125 AKAMAI-ASN1, NL 12389 3120 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2420 172 1753 CDNEXT, GB 34984 2414 363 573 TELLCOM-AS, TR 203020 1964 231 914 HOSTROYALE, IN 8452 1628 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 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 12347 3276 574 UNINET, MX 10620 3493 473 1047 Telmex Colombia S.A., CO 13999 2542 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1228 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1186 371 23 Telefonica del Peru S.A.A., PE 22884 1060 67 359 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 1793 652 28 RAYA-AS, EG 36992 1508 1498 384 ETISALAT-MISR, EG 29571 1280 102 51 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1247 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 1077 522 45 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 564 82 3 KENET-AS, KE 15399 550 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 14415 40908 5403 AMAZON-02, US 9808 13502 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12347 3276 574 UNINET, MX 12479 7460 1711 149 UNI2-AS, ES 7545 6161 837 601 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4737 320 807 CABLEONE, US 9498 4468 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4454 347 26 FPT-AS-AP FPT Telecom Company, VN 9009 3946 370 2218 M247, RO 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 13502 13386 CHINAMOBILE-CN China Mobile Communications Grou 8151 12347 11773 UNINET, MX 12479 7460 7311 UNI2-AS, ES 7545 6161 5560 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4454 4428 FPT-AS-AP FPT Telecom Company, VN 9498 4468 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4737 3930 CABLEONE, US 7552 3941 3914 VIETEL-AS-AP Viettel Group, VN 20940 3908 3783 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 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 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, 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 /11:93 /12:298 /13:577 /14:1200 /15:2126 /16:13728 /17:8151 /18:13376 /19:24483 /20:44166 /21:51807 /22:112170 /23:103384 /24:625071 /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 6564 12347 UNINET, MX 12479 6428 7460 UNI2-AS, ES 11492 3552 4737 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3677 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2506 3945 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2450 14415 AMAZON-02, US 30036 2295 2636 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3493 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) ---------------------------------------------- 1:2424 2:1516 3:939 4:10 5:4830 6:165 7:6 8:1539 9:6 11:172 12:1247 13:568 14:2622 15:399 16:303 17:386 18:905 20:568 21:4 22:188 23:7841 24:2656 25:2 27:2792 29:19 31:3357 32:30 33:1 34:84 35:267 36:4383 37:4524 38:9421 39:1074 40:283 41:4309 42:1965 43:2766 44:378 45:18980 46:5122 47:344 49:2019 50:2039 51:594 52:1610 54:373 55:1088 56:11 57:284 58:2271 59:1306 60:1187 61:2916 62:3026 63:1765 64:5625 65:2118 66:4878 67:3095 68:1084 69:3902 70:1039 71:631 72:2893 74:2816 75:1496 76:602 77:2775 78:1899 79:1757 80:2233 81:2080 82:3326 83:1456 84:1965 85:3487 86:1097 87:2126 88:1324 89:4496 90:809 91:8405 92:2787 93:2966 94:4163 95:4446 96:1464 97:312 98:952 99:762 100:71 101:1473 102:4096 103:32929 104:5325 105:777 106:880 107:2654 108:1217 109:4206 110:2252 111:3734 112:2613 113:1859 114:1993 115:2284 116:2099 117:2865 118:3060 119:1957 120:2234 121:1349 122:2786 123:2249 124:1709 125:2920 126:91 128:1565 129:959 130:1282 131:2118 132:785 133:461 134:1599 135:362 136:1486 137:1137 138:2797 139:1605 140:1640 141:1543 142:1912 143:2037 144:1267 145:623 146:2174 147:2109 148:2736 149:2909 150:1278 151:2528 152:2122 153:575 154:7490 155:2041 156:3466 157:2001 158:1429 159:2564 160:3552 161:1963 162:3924 163:2293 164:1904 165:2574 166:1560 167:2089 168:3811 169:773 170:5347 171:1007 172:4233 173:3404 174:902 175:1348 176:3801 177:4731 178:4173 179:2313 180:2750 181:4265 182:3725 183:2589 184:2057 185:21629 186:5417 187:4710 188:4282 189:4395 190:9707 191:1555 192:11370 193:9455 194:7796 195:5553 196:3281 197:3246 198:6099 199:8702 200:8075 201:6342 202:10399 203:10646 204:4553 205:3612 206:4497 207:3525 208:4271 209:5236 210:4708 211:2676 212:4691 213:3846 214:1034 215:52 216:6861 217:3318 218:1503 219:396 220:2152 221:1232 222:750 223:2979 End of report