IPv4 R&E Routing Table Report 23:05 GMT Sat 11 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: 1006568 Prefixes after maximum aggregation (per Origin AS): 390780 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 497168 Number of IPv4 prefixes with a valid ROA: 577225 Number of IPv4 prefixes with an invalid ROA: 757 Number of IPv4 prefixes with no ROA: 428586 Total ASes present in the Internet Routing Table: 77333 Prefixes per ASN: 13.02 Origin-only ASes present in the Internet Routing Table: 66279 Origin ASes announcing only one prefix: 27041 Transit ASes present in the Internet Routing Table: 11054 Transit-only ASes present in the Internet Routing Table: 556 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: 1057 Number of instances of unregistered ASNs: 1086 Number of 32-bit ASNs allocated by the RIRs: 47679 Number of 32-bit ASNs visible in the Routing Table: 39092 Prefixes from 32-bit ASNs in the Routing Table: 213410 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: 459 Number of addresses announced to Internet: 3111118336 Equivalent to 185 /8s, 111 /16s and 230 /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: 327687 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270121 Total APNIC prefixes after maximum aggregation: 79883 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 259879 Unique aggregates announced from the APNIC address blocks: 105814 APNIC Region origin ASes present in the Internet Routing Table: 14780 APNIC Prefixes per ASN: 17.58 APNIC Region origin ASes announcing only one prefix: 4468 APNIC Region transit ASes present in the Internet Routing Table: 1984 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: 10360 Number of APNIC addresses announced to Internet: 751588352 Equivalent to 44 /8s, 204 /16s and 84 /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: 295422 Total ARIN prefixes after maximum aggregation: 134159 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 296447 Unique aggregates announced from the ARIN address blocks: 143837 ARIN Region origin ASes present in the Internet Routing Table: 19305 ARIN Prefixes per ASN: 15.36 ARIN Region origin ASes announcing only one prefix: 7096 ARIN Region transit ASes present in the Internet Routing Table: 1914 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5351 Number of ARIN addresses announced to Internet: 1352208384 Equivalent to 80 /8s, 153 /16s and 16 /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: 280187 Total RIPE prefixes after maximum aggregation: 138847 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279772 Unique aggregates announced from the RIPE address blocks: 181132 RIPE Region origin ASes present in the Internet Routing Table: 29077 RIPE Prefixes per ASN: 9.62 RIPE Region origin ASes announcing only one prefix: 12108 RIPE Region transit ASes present in the Internet Routing Table: 4040 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: 12765 Number of RIPE addresses announced to Internet: 732516096 Equivalent to 43 /8s, 169 /16s and 79 /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: 124785 Total LACNIC prefixes after maximum aggregation: 30338 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120941 Unique aggregates announced from the LACNIC address blocks: 49392 LACNIC Region origin ASes present in the Internet Routing Table: 11308 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2655 LACNIC Region transit ASes present in the Internet Routing Table: 2536 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: 9280 Number of LACNIC addresses announced to Internet: 170689536 Equivalent to 10 /8s, 44 /16s and 132 /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: 34996 Total AfriNIC prefixes after maximum aggregation: 6851 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 49070 Unique aggregates announced from the AfriNIC address blocks: 16587 AfriNIC Region origin ASes present in the Internet Routing Table: 1969 AfriNIC Prefixes per ASN: 24.92 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: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1336 Number of AfriNIC addresses announced to Internet: 103854336 Equivalent to 6 /8s, 48 /16s and 177 /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 13731 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6184 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4506 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4472 536 313 BBIL-AP BHARTI Airtel Ltd., IN 7552 3948 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3687 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3140 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2927 863 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2469 512 1597 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 14301 40989 5361 AMAZON-02, US 11492 4756 321 791 CABLEONE, US 22773 4021 3070 362 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 3109 241 1738 USDA-1, US 174 3051 8764 852 COGENT-174, US 16625 2875 1224 2156 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 7402 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3983 374 2242 M247, RO 20940 3894 3395 124 AKAMAI-ASN1, NL 12389 3139 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2515 180 1828 CDNEXT, GB 34984 2414 363 575 TELLCOM-AS, TR 203020 2036 223 1004 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 12362 3282 574 UNINET, MX 10620 3476 468 1086 Telmex Colombia S.A., CO 13999 2516 508 351 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1226 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1168 371 23 Telefonica del Peru S.A.A., PE 22884 1061 67 361 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 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 568 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 14301 40989 5361 AMAZON-02, US 9808 13731 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12362 3282 574 UNINET, MX 12479 7402 1711 149 UNI2-AS, ES 7545 6184 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4756 321 791 CABLEONE, US 18403 4506 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4472 536 313 BBIL-AP BHARTI Airtel Ltd., IN 22773 4021 3070 362 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 13731 13614 CHINAMOBILE-CN China Mobile Communications Grou 8151 12362 11788 UNINET, MX 12479 7402 7253 UNI2-AS, ES 7545 6184 5581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4506 4481 FPT-AS-AP FPT Telecom Company, VN 9498 4472 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 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, 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 397015 UNALLOCATED 8.44.246.0/24 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 /15:2120 /16:13746 /17:8146 /18:13402 /19:24559 /20:44201 /21:51702 /22:112315 /23:103925 /24:630211 /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 6586 12362 UNINET, MX 12479 6367 7402 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 4021 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2393 14301 AMAZON-02, US 30036 2300 2640 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 2:1512 3:940 4:10 5:4858 6:170 7:6 8:1532 9:6 11:172 12:1240 13:564 14:2649 15:401 16:304 17:388 18:908 20:575 21:4 22:188 23:7887 24:2651 25:2 27:2792 29:19 31:3357 32:31 33:1 34:84 35:273 36:4467 37:4546 38:9487 39:1098 40:469 41:4301 42:2011 43:2784 44:389 45:19218 46:5176 47:365 49:2088 50:2050 51:595 52:1592 54:359 55:1185 56:11 57:281 58:2320 59:1320 60:1189 61:2951 62:3087 63:1762 64:5657 65:2131 66:5052 67:3113 68:1212 69:3989 70:1044 71:625 72:2983 74:2818 75:1502 76:598 77:2772 78:1895 79:1751 80:2246 81:2122 82:3463 83:1471 84:1986 85:3524 86:1101 87:2133 88:1325 89:4519 90:809 91:8377 92:2806 93:2978 94:4166 95:4496 96:1471 97:312 98:948 99:755 100:71 101:1477 102:4152 103:32839 104:5452 105:778 106:894 107:2666 108:1206 109:4225 110:2257 111:3770 112:2662 113:1863 114:2071 115:2299 116:2092 117:3026 118:3048 119:2010 120:2281 121:1478 122:2803 123:2253 124:1707 125:2909 126:125 128:1569 129:958 130:1380 131:2157 132:785 133:462 134:1618 135:363 136:1488 137:1123 138:2817 139:1595 140:1639 141:1544 142:2133 143:2079 144:1268 145:628 146:2177 147:2127 148:2739 149:2928 150:1286 151:2601 152:2172 153:576 154:7890 155:2102 156:3284 157:1998 158:1431 159:2600 160:3620 161:1993 162:3951 163:2297 164:1947 165:2551 166:1567 167:2109 168:3827 169:775 170:5383 171:1057 172:4456 173:3413 174:906 175:1357 176:3806 177:4752 178:4294 179:2275 180:2849 181:4244 182:3749 183:2552 184:2056 185:21653 186:5371 187:4684 188:4387 189:4386 190:9670 191:1560 192:11365 193:9464 194:7795 195:5575 196:3289 197:3354 198:6071 199:8790 200:8065 201:6335 202:10438 203:10583 204:4590 205:3627 206:4387 207:3572 208:4269 209:5311 210:4687 211:2684 212:4823 213:3886 214:1033 215:52 216:6943 217:3356 218:1574 219:396 220:2194 221:1248 222:751 223:3070 End of report