IPv4 R&E Routing Table Report 23:05 GMT Mon 01 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: 994759 Prefixes after maximum aggregation (per Origin AS): 386725 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 492007 Number of IPv4 prefixes with a valid ROA: 565694 Number of IPv4 prefixes with an invalid ROA: 770 Number of IPv4 prefixes with no ROA: 428295 Total ASes present in the Internet Routing Table: 77125 Prefixes per ASN: 12.90 Origin-only ASes present in the Internet Routing Table: 66071 Origin ASes announcing only one prefix: 26993 Transit ASes present in the Internet Routing Table: 11054 Transit-only ASes present in the Internet Routing Table: 552 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: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1107 Number of instances of unregistered ASNs: 1148 Number of 32-bit ASNs allocated by the RIRs: 47305 Number of 32-bit ASNs visible in the Routing Table: 38817 Prefixes from 32-bit ASNs in the Routing Table: 209204 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: 445 Number of addresses announced to Internet: 3106836992 Equivalent to 185 /8s, 46 /16s and 146 /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: 323877 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265874 Total APNIC prefixes after maximum aggregation: 78723 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256332 Unique aggregates announced from the APNIC address blocks: 105150 APNIC Region origin ASes present in the Internet Routing Table: 14717 APNIC Prefixes per ASN: 17.42 APNIC Region origin ASes announcing only one prefix: 4459 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: 10287 Number of APNIC addresses announced to Internet: 750029312 Equivalent to 44 /8s, 180 /16s and 138 /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: 291106 Total ARIN prefixes after maximum aggregation: 132834 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293256 Unique aggregates announced from the ARIN address blocks: 142302 ARIN Region origin ASes present in the Internet Routing Table: 19243 ARIN Prefixes per ASN: 15.24 ARIN Region origin ASes announcing only one prefix: 7057 ARIN Region transit ASes present in the Internet Routing Table: 1915 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: 5301 Number of ARIN addresses announced to Internet: 1349523200 Equivalent to 80 /8s, 112 /16s and 23 /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: 277622 Total RIPE prefixes after maximum aggregation: 137369 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276794 Unique aggregates announced from the RIPE address blocks: 179273 RIPE Region origin ASes present in the Internet Routing Table: 29025 RIPE Prefixes per ASN: 9.54 RIPE Region origin ASes announcing only one prefix: 12105 RIPE Region transit ASes present in the Internet Routing Table: 4036 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: 12660 Number of RIPE addresses announced to Internet: 731844608 Equivalent to 43 /8s, 159 /16s and 16 /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: 124076 Total LACNIC prefixes after maximum aggregation: 30283 LACNIC Deaggregation factor: 4.10 Prefixes being announced from the LACNIC address blocks: 120314 Unique aggregates announced from the LACNIC address blocks: 49465 LACNIC Region origin ASes present in the Internet Routing Table: 11281 LACNIC Prefixes per ASN: 10.67 LACNIC Region origin ASes announcing only one prefix: 2657 LACNIC Region transit ASes present in the Internet Routing Table: 2538 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: 9244 Number of LACNIC addresses announced to Internet: 170724096 Equivalent to 10 /8s, 45 /16s and 11 /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: 6793 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 47618 Unique aggregates announced from the AfriNIC address blocks: 15433 AfriNIC Region origin ASes present in the Internet Routing Table: 1960 AfriNIC Prefixes per ASN: 24.29 AfriNIC Region origin ASes announcing only one prefix: 715 AfriNIC Region transit ASes present in the Internet Routing Table: 383 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1325 Number of AfriNIC addresses announced to Internet: 104472320 Equivalent to 6 /8s, 58 /16s and 31 /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 12916 8729 114 CHINAMOBILE-CN China Mobile Communication 7545 6138 838 615 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4389 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3943 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3663 1044 68 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2979 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2916 864 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2175 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 14120 40855 5388 AMAZON-02, US 11492 4744 315 801 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3651 1320 82 SHAW, CA 22773 3351 3034 180 ASN-CXA-ALL-CCI-22773-RDC, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3219 3858 437 GOOGLE-CLOUD-PLATFORM, US 174 3176 8758 838 COGENT-174, US 4155 2960 230 1740 USDA-1, US 16625 2909 1233 2169 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 7509 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3909 3395 125 AKAMAI-ASN1, NL 9009 3876 366 2183 M247, RO 12389 3118 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2405 361 586 TELLCOM-AS, TR 212238 2370 169 1726 CDNEXT, GB 203020 1835 221 843 HOSTROYALE, IN 13188 1606 100 34 TRIOLAN, UA 8452 1603 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 12313 3273 572 UNINET, MX 10620 3486 472 1048 Telmex Colombia S.A., CO 13999 2532 511 347 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1369 2432 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1179 371 22 Telefonica del Peru S.A.A., PE 11664 1073 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1054 67 374 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 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 1765 652 28 RAYA-AS, EG 29571 1498 94 37 ORANGE-COTE-IVOIRE, CI 36992 1423 1495 375 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1243 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 973 521 43 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 555 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 14120 40855 5388 AMAZON-02, US 9808 12916 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12313 3273 572 UNINET, MX 12479 7509 1711 150 UNI2-AS, ES 7545 6138 838 615 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4744 315 801 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4389 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3943 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 12916 12802 CHINAMOBILE-CN China Mobile Communications Grou 8151 12313 11741 UNINET, MX 12479 7509 7359 UNI2-AS, ES 7545 6138 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4389 4363 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4744 3943 CABLEONE, US 7552 3943 3916 VIETEL-AS-AP Viettel Group, VN 20940 3909 3784 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 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 1782 UNALLOCATED 8.42.19.0/24 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 /14:1199 /15:2124 /16:13729 /17:8131 /18:13387 /19:24434 /20:44093 /21:51669 /22:111996 /23:102890 /24:620070 /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 6515 12313 UNINET, MX 12479 6460 7509 UNI2-AS, ES 11492 3560 4744 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3448 3651 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2501 3351 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2386 14120 AMAZON-02, US 30036 2318 2661 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2206 3486 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) ---------------------------------------------- 1:2420 2:1509 3:922 4:10 5:4825 6:156 7:6 8:1539 9:4 11:172 12:1251 13:504 14:2601 15:396 16:302 17:386 18:902 20:567 21:4 22:188 23:7807 24:2659 25:2 27:2801 29:19 31:3360 32:29 33:1 34:84 35:261 36:4304 37:4514 38:9406 39:993 40:264 41:4285 42:1933 43:2734 44:378 45:18830 46:5095 47:343 49:1993 50:2059 51:591 52:1597 54:359 55:1110 56:11 57:283 58:2278 59:1291 60:1182 61:2897 62:3030 63:1772 64:5590 65:2130 66:4802 67:3090 68:1069 69:3879 70:1037 71:627 72:2854 74:2800 75:1504 76:601 77:2768 78:1896 79:1752 80:2223 81:2078 82:3267 83:1444 84:1937 85:3481 86:1123 87:2117 88:1318 89:4484 90:796 91:8400 92:2769 93:2978 94:4160 95:4425 96:1447 97:310 98:949 99:723 100:71 101:1472 102:3989 103:32822 104:5315 105:766 106:876 107:2655 108:1232 109:4180 110:2238 111:3580 112:2474 113:1838 114:1980 115:2186 116:2093 117:2703 118:3023 119:1948 120:2201 121:1328 122:2783 123:2223 124:1709 125:2909 126:91 128:1553 129:961 130:1275 131:2136 132:779 133:459 134:1629 135:366 136:1479 137:1120 138:2820 139:1591 140:1615 141:1541 142:1901 143:1994 144:1200 145:605 146:2171 147:2102 148:2717 149:2912 150:1265 151:2373 152:2108 153:563 154:7260 155:1970 156:3160 157:1958 158:1469 159:2551 160:3582 161:1937 162:3899 163:2285 164:1907 165:2518 166:1554 167:2062 168:3848 169:776 170:5245 171:996 172:4236 173:3402 174:904 175:1324 176:3786 177:4790 178:4023 179:2307 180:2733 181:4193 182:3629 183:2362 184:2054 185:21578 186:5333 187:4595 188:4309 189:4328 190:9425 191:1520 192:11338 193:9473 194:7788 195:5639 196:3284 197:3249 198:6092 199:8645 200:8080 201:6390 202:10403 203:10624 204:4527 205:3610 206:4469 207:3527 208:4269 209:5153 210:4664 211:2650 212:4624 213:3827 214:1038 215:51 216:6815 217:3284 218:1450 219:393 220:2156 221:1208 222:748 223:2827 End of report