IPv4 R&E Routing Table Report 23:05 GMT Thu 09 Oct, 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: 1006380 Prefixes after maximum aggregation (per Origin AS): 390701 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 497120 Number of IPv4 prefixes with a valid ROA: 577120 Number of IPv4 prefixes with an invalid ROA: 716 Number of IPv4 prefixes with no ROA: 428544 Total ASes present in the Internet Routing Table: 77293 Prefixes per ASN: 13.02 Origin-only ASes present in the Internet Routing Table: 66242 Origin ASes announcing only one prefix: 27024 Transit ASes present in the Internet Routing Table: 11051 Transit-only ASes present in the Internet Routing Table: 550 Paths with bogon ASNs present in the IPv4 Routing Table: 27 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1059 Number of instances of unregistered ASNs: 1088 Number of 32-bit ASNs allocated by the RIRs: 47652 Number of 32-bit ASNs visible in the Routing Table: 39056 Prefixes from 32-bit ASNs in the Routing Table: 213147 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 479 Number of addresses announced to Internet: 3111315456 Equivalent to 185 /8s, 114 /16s and 232 /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: 327616 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269857 Total APNIC prefixes after maximum aggregation: 79848 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 259670 Unique aggregates announced from the APNIC address blocks: 105804 APNIC Region origin ASes present in the Internet Routing Table: 14777 APNIC Prefixes per ASN: 17.57 APNIC Region origin ASes announcing only one prefix: 4465 APNIC Region transit ASes present in the Internet Routing Table: 1985 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: 10359 Number of APNIC addresses announced to Internet: 751567616 Equivalent to 44 /8s, 204 /16s and 3 /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: 295608 Total ARIN prefixes after maximum aggregation: 134248 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 296535 Unique aggregates announced from the ARIN address blocks: 143817 ARIN Region origin ASes present in the Internet Routing Table: 19296 ARIN Prefixes per ASN: 15.37 ARIN Region origin ASes announcing only one prefix: 7095 ARIN Region transit ASes present in the Internet Routing Table: 1908 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5345 Number of ARIN addresses announced to Internet: 1352232448 Equivalent to 80 /8s, 153 /16s and 110 /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: 280086 Total RIPE prefixes after maximum aggregation: 138730 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279609 Unique aggregates announced from the RIPE address blocks: 181076 RIPE Region origin ASes present in the Internet Routing Table: 29060 RIPE Prefixes per ASN: 9.62 RIPE Region origin ASes announcing only one prefix: 12094 RIPE Region transit ASes present in the Internet Routing Table: 4042 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: 12744 Number of RIPE addresses announced to Internet: 732691968 Equivalent to 43 /8s, 171 /16s and 254 /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: 124783 Total LACNIC prefixes after maximum aggregation: 30320 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120964 Unique aggregates announced from the LACNIC address blocks: 49398 LACNIC Region origin ASes present in the Internet Routing Table: 11302 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2657 LACNIC Region transit ASes present in the Internet Routing Table: 2537 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9275 Number of LACNIC addresses announced to Internet: 170701312 Equivalent to 10 /8s, 44 /16s and 178 /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: 34987 Total AfriNIC prefixes after maximum aggregation: 6851 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 49123 Unique aggregates announced from the AfriNIC address blocks: 16599 AfriNIC Region origin ASes present in the Internet Routing Table: 1967 AfriNIC Prefixes per ASN: 24.97 AfriNIC Region origin ASes announcing only one prefix: 713 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1333 Number of AfriNIC addresses announced to Internet: 103866112 Equivalent to 6 /8s, 48 /16s and 223 /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 13699 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6183 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4608 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4471 536 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3948 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3708 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3120 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2927 863 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2468 512 1596 HUTCHISON-AS-AP HGC Global Communications 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 14352 40997 5372 AMAZON-02, US 11492 4756 321 791 CABLEONE, US 22773 4020 3070 361 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3684 1320 82 SHAW, CA 396982 3273 4824 465 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3114 241 1739 USDA-1, US 174 3062 8764 854 COGENT-174, US 16625 2878 1225 2157 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 7403 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3976 373 2236 M247, RO 20940 3895 3395 124 AKAMAI-ASN1, NL 12389 3138 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2492 178 1809 CDNEXT, GB 34984 2414 363 575 TELLCOM-AS, TR 203020 2035 223 1003 HOSTROYALE, IN 8452 1653 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 12394 3282 574 UNINET, MX 10620 3476 468 1086 Telmex Colombia S.A., CO 13999 2543 511 346 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1227 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1179 371 23 Telefonica del Peru S.A.A., PE 22884 1061 67 361 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 2486 56 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 1766 600 27 RAYA-AS, EG 36992 1512 1498 385 ETISALAT-MISR, EG 29571 1284 102 52 ORANGE-COTE-IVOIRE, CI 24863 1250 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1085 1096 13 MOBINIL, EG 36935 958 523 47 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 567 82 3 KENET-AS, KE 15399 551 57 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 14352 40997 5372 AMAZON-02, US 9808 13699 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12394 3282 574 UNINET, MX 12479 7403 1711 149 UNI2-AS, ES 7545 6183 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4756 321 791 CABLEONE, US 18403 4608 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4471 536 312 BBIL-AP BHARTI Airtel Ltd., IN 22773 4020 3070 361 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 13699 13582 CHINAMOBILE-CN China Mobile Communications Grou 8151 12394 11820 UNINET, MX 12479 7403 7254 UNI2-AS, ES 7545 6183 5580 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4608 4582 FPT-AS-AP FPT Telecom Company, VN 9498 4471 4159 BBIL-AP BHARTI Airtel Ltd., IN 11492 4756 3965 CABLEONE, US 7552 3948 3920 VIETEL-AS-AP Viettel Group, VN 7155 3859 3774 VIASAT-SP-BACKBONE, US 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 210537 UNALLOCATED 5.83.148.0/24 215828 TMW-GLOBAL-NETWORKS TMW 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 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 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, 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 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 /12:300 /13:580 /14:1197 /15:2121 /16:13748 /17:8146 /18:13389 /19:24537 /20:44196 /21:51724 /22:112344 /23:103864 /24:630070 /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 6616 12394 UNINET, MX 12479 6367 7403 UNI2-AS, ES 11492 3569 4756 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3472 3684 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2522 4020 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2415 14352 AMAZON-02, US 30036 2294 2634 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3476 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) ---------------------------------------------- 1:2431 2:1510 3:944 4:10 5:4856 6:170 7:6 8:1531 9:6 11:172 12:1242 13:576 14:2644 15:401 16:304 17:386 18:908 20:574 21:4 22:188 23:7878 24:2652 25:2 27:2794 29:19 31:3359 32:31 33:1 34:84 35:272 36:4456 37:4540 38:9556 39:1089 40:469 41:4306 42:2076 43:2781 44:388 45:19203 46:5186 47:366 49:2087 50:2048 51:595 52:1593 54:359 55:1184 56:11 57:281 58:2332 59:1318 60:1189 61:2955 62:3085 63:1762 64:5671 65:2135 66:5050 67:3114 68:1209 69:3980 70:1048 71:633 72:2985 74:2823 75:1503 76:603 77:2777 78:1896 79:1752 80:2244 81:2115 82:3461 83:1471 84:1983 85:3515 86:1099 87:2135 88:1323 89:4511 90:806 91:8379 92:2804 93:2978 94:4165 95:4495 96:1473 97:312 98:949 99:756 100:71 101:1476 102:4134 103:32807 104:5465 105:778 106:895 107:2664 108:1206 109:4225 110:2257 111:3754 112:2649 113:1864 114:2060 115:2300 116:2092 117:3013 118:3054 119:2008 120:2274 121:1458 122:2803 123:2253 124:1706 125:2910 126:125 128:1570 129:957 130:1360 131:2151 132:785 133:462 134:1619 135:363 136:1489 137:1125 138:2813 139:1596 140:1639 141:1543 142:2092 143:2084 144:1269 145:628 146:2176 147:2129 148:2743 149:2918 150:1285 151:2603 152:2164 153:575 154:7931 155:2115 156:3307 157:1996 158:1431 159:2599 160:3620 161:1998 162:3945 163:2294 164:1946 165:2547 166:1564 167:2106 168:3835 169:773 170:5377 171:1025 172:4461 173:3413 174:906 175:1354 176:3808 177:4741 178:4292 179:2278 180:2835 181:4245 182:3748 183:2565 184:2057 185:21642 186:5376 187:4697 188:4386 189:4402 190:9671 191:1546 192:11367 193:9468 194:7789 195:5572 196:3263 197:3340 198:6075 199:8790 200:8066 201:6346 202:10442 203:10573 204:4586 205:3631 206:4392 207:3573 208:4267 209:5306 210:4689 211:2685 212:4815 213:3881 214:1035 215:52 216:6939 217:3350 218:1569 219:396 220:2189 221:1246 222:751 223:3033 End of report