IPv4 R&E Routing Table Report 23:05 GMT Tue 16 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: 999498 Prefixes after maximum aggregation (per Origin AS): 388053 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 494740 Number of IPv4 prefixes with a valid ROA: 570326 Number of IPv4 prefixes with an invalid ROA: 941 Number of IPv4 prefixes with no ROA: 428231 Total ASes present in the Internet Routing Table: 77232 Prefixes per ASN: 12.94 Origin-only ASes present in the Internet Routing Table: 66190 Origin ASes announcing only one prefix: 27023 Transit ASes present in the Internet Routing Table: 11042 Transit-only ASes present in the Internet Routing Table: 542 Paths with bogon ASNs present in the IPv4 Routing Table: 25 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: 1118 Number of instances of unregistered ASNs: 1148 Number of 32-bit ASNs allocated by the RIRs: 47428 Number of 32-bit ASNs visible in the Routing Table: 38940 Prefixes from 32-bit ASNs in the Routing Table: 210650 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: 440 Number of addresses announced to Internet: 3108298496 Equivalent to 185 /8s, 68 /16s and 223 /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: 325226 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 267991 Total APNIC prefixes after maximum aggregation: 79147 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 258126 Unique aggregates announced from the APNIC address blocks: 105644 APNIC Region origin ASes present in the Internet Routing Table: 14763 APNIC Prefixes per ASN: 17.48 APNIC Region origin ASes announcing only one prefix: 4471 APNIC Region transit ASes present in the Internet Routing Table: 1980 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: 10335 Number of APNIC addresses announced to Internet: 750303232 Equivalent to 44 /8s, 184 /16s and 184 /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: 292403 Total ARIN prefixes after maximum aggregation: 133354 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 294001 Unique aggregates announced from the ARIN address blocks: 142652 ARIN Region origin ASes present in the Internet Routing Table: 19278 ARIN Prefixes per ASN: 15.25 ARIN Region origin ASes announcing only one prefix: 7073 ARIN Region transit ASes present in the Internet Routing Table: 1933 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: 5330 Number of ARIN addresses announced to Internet: 1350318080 Equivalent to 80 /8s, 124 /16s and 56 /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: 278536 Total RIPE prefixes after maximum aggregation: 137853 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277736 Unique aggregates announced from the RIPE address blocks: 179996 RIPE Region origin ASes present in the Internet Routing Table: 29049 RIPE Prefixes per ASN: 9.56 RIPE Region origin ASes announcing only one prefix: 12104 RIPE Region transit ASes present in the Internet Routing Table: 4012 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: 12702 Number of RIPE addresses announced to Internet: 732469760 Equivalent to 43 /8s, 168 /16s and 154 /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: 124476 Total LACNIC prefixes after maximum aggregation: 30160 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 120732 Unique aggregates announced from the LACNIC address blocks: 49364 LACNIC Region origin ASes present in the Internet Routing Table: 11284 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2660 LACNIC Region transit ASes present in the Internet Routing Table: 2523 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: 9247 Number of LACNIC addresses announced to Internet: 170663424 Equivalent to 10 /8s, 44 /16s and 30 /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: 34974 Total AfriNIC prefixes after maximum aggregation: 6809 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 48463 Unique aggregates announced from the AfriNIC address blocks: 16696 AfriNIC Region origin ASes present in the Internet Routing Table: 1961 AfriNIC Prefixes per ASN: 24.71 AfriNIC Region origin ASes announcing only one prefix: 715 AfriNIC Region transit ASes present in the Internet Routing Table: 384 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: 1326 Number of AfriNIC addresses announced to Internet: 104300800 Equivalent to 6 /8s, 55 /16s and 129 /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 13378 8729 115 CHINAMOBILE-CN China Mobile Communication 7545 6157 837 601 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4462 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3936 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3305 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3034 812 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 863 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2181 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 14380 40911 5382 AMAZON-02, US 11492 4735 319 809 CABLEONE, US 22773 3944 3045 315 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3668 1320 81 SHAW, CA 396982 3241 4002 448 GOOGLE-CLOUD-PLATFORM, US 174 3237 8761 867 COGENT-174, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3000 233 1738 USDA-1, US 16625 2891 1229 2154 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 7467 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 9009 3923 366 2194 M247, RO 20940 3899 3395 125 AKAMAI-ASN1, NL 12389 3121 2315 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2418 172 1751 CDNEXT, GB 34984 2414 363 573 TELLCOM-AS, TR 203020 1953 230 909 HOSTROYALE, IN 8452 1621 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 12373 3280 573 UNINET, MX 10620 3494 473 1048 Telmex Colombia S.A., CO 13999 2543 511 348 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1367 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1226 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1177 371 22 Telefonica del Peru S.A.A., PE 22884 1059 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1009 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 1821 652 28 RAYA-AS, EG 36992 1507 1498 383 ETISALAT-MISR, EG 29571 1336 102 51 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1246 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 1078 523 46 Vodafone-, EG 20011 573 152 209 NTT-DATA-Inc, ZA 36914 569 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 14380 40911 5382 AMAZON-02, US 9808 13378 8729 115 CHINAMOBILE-CN China Mobile Communication 8151 12373 3280 573 UNINET, MX 12479 7467 1711 149 UNI2-AS, ES 7545 6157 837 601 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4735 319 809 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4462 347 26 FPT-AS-AP FPT Telecom Company, VN 22773 3944 3045 315 ASN-CXA-ALL-CCI-22773-RDC, US 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 13378 13263 CHINAMOBILE-CN China Mobile Communications Grou 8151 12373 11800 UNINET, MX 12479 7467 7318 UNI2-AS, ES 7545 6157 5556 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4462 4436 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4735 3926 CABLEONE, US 7552 3936 3909 VIETEL-AS-AP Viettel Group, VN 20940 3899 3774 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 /11:92 /12:298 /13:576 /14:1199 /15:2124 /16:13728 /17:8144 /18:13371 /19:24451 /20:44149 /21:51796 /22:112182 /23:103239 /24:624078 /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 6572 12373 UNINET, MX 12479 6431 7467 UNI2-AS, ES 11492 3550 4735 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3465 3668 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2505 3944 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2450 14380 AMAZON-02, US 30036 2298 2640 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2212 3494 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 2:1507 3:932 4:10 5:4824 6:157 7:6 8:1543 9:4 11:172 12:1249 13:561 14:2621 15:399 16:303 17:386 18:901 20:571 21:4 22:188 23:7832 24:2658 25:2 27:2795 29:19 31:3355 32:30 33:1 34:84 35:266 36:4374 37:4541 38:9457 39:1064 40:281 41:4326 42:1963 43:2749 44:372 45:18986 46:5101 47:341 49:2018 50:2043 51:592 52:1608 54:371 55:1085 56:11 57:284 58:2274 59:1301 60:1183 61:2915 62:3049 63:1767 64:5610 65:2118 66:4851 67:3075 68:1083 69:3897 70:1036 71:628 72:2884 74:2823 75:1502 76:600 77:2785 78:1901 79:1758 80:2242 81:2080 82:3312 83:1455 84:1967 85:3491 86:1098 87:2118 88:1318 89:4494 90:808 91:8407 92:2789 93:2975 94:4153 95:4432 96:1465 97:312 98:950 99:762 100:71 101:1473 102:4089 103:32904 104:5317 105:756 106:878 107:2644 108:1216 109:4195 110:2252 111:3715 112:2550 113:1851 114:1990 115:2238 116:2094 117:2845 118:3060 119:1956 120:2219 121:1345 122:2787 123:2241 124:1716 125:2920 126:91 128:1561 129:958 130:1275 131:2128 132:786 133:461 134:1601 135:365 136:1485 137:1132 138:2799 139:1595 140:1625 141:1540 142:1911 143:2038 144:1260 145:608 146:2173 147:2112 148:2734 149:2905 150:1283 151:2454 152:2161 153:574 154:7428 155:2051 156:3443 157:2000 158:1434 159:2561 160:3604 161:1965 162:3917 163:2291 164:1906 165:2570 166:1558 167:2087 168:3808 169:772 170:5350 171:1006 172:4240 173:3402 174:902 175:1345 176:3799 177:4719 178:4111 179:2281 180:2749 181:4242 182:3710 183:2571 184:2057 185:21641 186:5395 187:4653 188:4279 189:4372 190:9612 191:1578 192:11384 193:9464 194:7791 195:5561 196:3285 197:3242 198:6096 199:8665 200:8083 201:6333 202:10409 203:10647 204:4551 205:3614 206:4494 207:3523 208:4276 209:5214 210:4686 211:2671 212:4680 213:3853 214:1042 215:52 216:6844 217:3322 218:1462 219:396 220:2151 221:1222 222:750 223:2931 End of report