IPv4 R&E Routing Table Report 23:05 GMT Wed 03 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: 995422 Prefixes after maximum aggregation (per Origin AS): 386901 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 492039 Number of IPv4 prefixes with a valid ROA: 566520 Number of IPv4 prefixes with an invalid ROA: 845 Number of IPv4 prefixes with no ROA: 428057 Total ASes present in the Internet Routing Table: 77141 Prefixes per ASN: 12.90 Origin-only ASes present in the Internet Routing Table: 66092 Origin ASes announcing only one prefix: 26983 Transit ASes present in the Internet Routing Table: 11049 Transit-only ASes present in the Internet Routing Table: 552 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: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1098 Number of instances of unregistered ASNs: 1127 Number of 32-bit ASNs allocated by the RIRs: 47312 Number of 32-bit ASNs visible in the Routing Table: 38838 Prefixes from 32-bit ASNs in the Routing Table: 209482 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: 441 Number of addresses announced to Internet: 3107099136 Equivalent to 185 /8s, 50 /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: 324167 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 266050 Total APNIC prefixes after maximum aggregation: 78739 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256448 Unique aggregates announced from the APNIC address blocks: 105204 APNIC Region origin ASes present in the Internet Routing Table: 14731 APNIC Prefixes per ASN: 17.41 APNIC Region origin ASes announcing only one prefix: 4474 APNIC Region transit ASes present in the Internet Routing Table: 1986 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: 10303 Number of APNIC addresses announced to Internet: 750119936 Equivalent to 44 /8s, 181 /16s and 236 /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: 291314 Total ARIN prefixes after maximum aggregation: 132956 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293325 Unique aggregates announced from the ARIN address blocks: 142314 ARIN Region origin ASes present in the Internet Routing Table: 19256 ARIN Prefixes per ASN: 15.23 ARIN Region origin ASes announcing only one prefix: 7055 ARIN Region transit ASes present in the Internet Routing Table: 1916 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: 5309 Number of ARIN addresses announced to Internet: 1349486080 Equivalent to 80 /8s, 111 /16s and 134 /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: 277759 Total RIPE prefixes after maximum aggregation: 137446 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276879 Unique aggregates announced from the RIPE address blocks: 179341 RIPE Region origin ASes present in the Internet Routing Table: 29016 RIPE Prefixes per ASN: 9.54 RIPE Region origin ASes announcing only one prefix: 12096 RIPE Region transit ASes present in the Internet Routing Table: 4026 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: 12658 Number of RIPE addresses announced to Internet: 731832832 Equivalent to 43 /8s, 158 /16s and 226 /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: 124228 Total LACNIC prefixes after maximum aggregation: 30254 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120428 Unique aggregates announced from the LACNIC address blocks: 49343 LACNIC Region origin ASes present in the Internet Routing Table: 11279 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2646 LACNIC Region transit ASes present in the Internet Routing Table: 2544 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: 9246 Number of LACNIC addresses announced to Internet: 170743808 Equivalent to 10 /8s, 45 /16s and 88 /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: 34973 Total AfriNIC prefixes after maximum aggregation: 6783 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 47901 Unique aggregates announced from the AfriNIC address blocks: 15457 AfriNIC Region origin ASes present in the Internet Routing Table: 1958 AfriNIC Prefixes per ASN: 24.46 AfriNIC Region origin ASes announcing only one prefix: 712 AfriNIC Region transit ASes present in the Internet Routing Table: 381 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: 1322 Number of AfriNIC addresses announced to Internet: 104674048 Equivalent to 6 /8s, 61 /16s and 51 /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 12913 8729 114 CHINAMOBILE-CN China Mobile Communication 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4382 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3935 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3663 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3303 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 2174 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 14139 40851 5365 AMAZON-02, US 11492 4750 315 797 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3659 1320 82 SHAW, CA 22773 3355 3034 180 ASN-CXA-ALL-CCI-22773-RDC, US 174 3226 8759 842 COGENT-174, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3219 3858 437 GOOGLE-CLOUD-PLATFORM, US 4155 2980 232 1741 USDA-1, US 16625 2915 1237 2172 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 7494 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3908 3395 125 AKAMAI-ASN1, NL 9009 3895 367 2193 M247, RO 12389 3118 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2404 361 585 TELLCOM-AS, TR 212238 2390 170 1735 CDNEXT, GB 203020 1874 225 863 HOSTROYALE, IN 13188 1606 100 34 TRIOLAN, UA 8452 1605 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 12304 3275 572 UNINET, MX 10620 3486 472 1048 Telmex Colombia S.A., CO 13999 2531 511 347 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1370 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1176 371 22 Telefonica del Peru S.A.A., PE 11664 1081 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1056 67 370 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 1792 652 28 RAYA-AS, EG 36992 1425 1495 377 ETISALAT-MISR, EG 29571 1371 102 38 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 1048 521 43 Vodafone-, EG 36914 583 82 3 KENET-AS, KE 20011 576 154 212 INTERNET-SOLUTIONS, ZA 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 14139 40851 5365 AMAZON-02, US 9808 12913 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12304 3275 572 UNINET, MX 12479 7494 1711 150 UNI2-AS, ES 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4750 315 797 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4382 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3935 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 12913 12799 CHINAMOBILE-CN China Mobile Communications Grou 8151 12304 11732 UNINET, MX 12479 7494 7344 UNI2-AS, ES 7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4382 4356 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4750 3953 CABLEONE, US 7552 3935 3908 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 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 23.144.196.0/24 Origin: 47689 PUDU Main public network, US 23.144.196.0/24 Transit: 1299 TWELVE99 Arelion, fka Telia Carrier, SE 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 /15:2125 /16:13728 /17:8134 /18:13371 /19:24438 /20:44093 /21:51725 /22:112088 /23:102962 /24:620522 /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 6506 12304 UNINET, MX 12479 6444 7494 UNI2-AS, ES 11492 3564 4750 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3456 3659 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2505 3355 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2399 14139 AMAZON-02, US 30036 2324 2667 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) ---------------------------------------------- 1:2419 2:1508 3:913 4:10 5:4821 6:155 7:6 8:1538 9:4 11:172 12:1254 13:533 14:2608 15:396 16:302 17:386 18:897 20:568 21:4 22:188 23:7816 24:2661 25:2 27:2798 29:19 31:3350 32:29 33:1 34:84 35:263 36:4304 37:4518 38:9298 39:996 40:261 41:4313 42:1933 43:2733 44:375 45:18848 46:5114 47:342 49:1993 50:2056 51:589 52:1603 54:363 55:1105 56:11 57:282 58:2276 59:1289 60:1181 61:2897 62:3033 63:1774 64:5605 65:2138 66:4807 67:3087 68:1069 69:3886 70:1038 71:625 72:2862 74:2798 75:1504 76:601 77:2771 78:1896 79:1750 80:2226 81:2039 82:3266 83:1451 84:1942 85:3485 86:1121 87:2112 88:1318 89:4485 90:802 91:8414 92:2768 93:2966 94:4165 95:4419 96:1449 97:310 98:950 99:729 100:71 101:1475 102:4013 103:32822 104:5315 105:770 106:876 107:2653 108:1222 109:4180 110:2239 111:3582 112:2474 113:1835 114:1979 115:2183 116:2081 117:2696 118:3022 119:1949 120:2201 121:1328 122:2786 123:2238 124:1712 125:2907 126:90 128:1553 129:961 130:1278 131:2146 132:779 133:459 134:1640 135:366 136:1486 137:1128 138:2809 139:1584 140:1620 141:1546 142:1902 143:2060 144:1227 145:605 146:2175 147:2103 148:2716 149:2912 150:1266 151:2362 152:2105 153:563 154:7250 155:1957 156:3300 157:1960 158:1400 159:2551 160:3604 161:1936 162:3900 163:2288 164:1911 165:2523 166:1559 167:2062 168:3820 169:775 170:5250 171:998 172:4237 173:3408 174:904 175:1335 176:3786 177:4769 178:4030 179:2308 180:2729 181:4198 182:3661 183:2365 184:2055 185:21593 186:5358 187:4609 188:4303 189:4347 190:9417 191:1520 192:11353 193:9471 194:7769 195:5641 196:3289 197:3251 198:6094 199:8662 200:8059 201:6381 202:10416 203:10635 204:4566 205:3623 206:4494 207:3525 208:4265 209:5177 210:4666 211:2649 212:4625 213:3829 214:1043 215:51 216:6818 217:3289 218:1480 219:393 220:2154 221:1208 222:748 223:2826 End of report