IPv4 R&E Routing Table Report 23:05 GMT Sun 27 Jul, 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: 989353 Prefixes after maximum aggregation (per Origin AS): 383409 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 487934 Number of IPv4 prefixes with a valid ROA: 557040 Number of IPv4 prefixes with an invalid ROA: 621 Number of IPv4 prefixes with no ROA: 431692 Total ASes present in the Internet Routing Table: 76957 Prefixes per ASN: 12.86 Origin-only ASes present in the Internet Routing Table: 65934 Origin ASes announcing only one prefix: 26922 Transit ASes present in the Internet Routing Table: 11023 Transit-only ASes present in the Internet Routing Table: 543 Paths with bogon ASNs present in the IPv4 Routing Table: 30 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 52 Max AS path prepend of ASN ( 37447) 36 Prefixes from unregistered ASNs in the Routing Table: 1174 Number of instances of unregistered ASNs: 1210 Number of 32-bit ASNs allocated by the RIRs: 46959 Number of 32-bit ASNs visible in the Routing Table: 38607 Prefixes from 32-bit ASNs in the Routing Table: 206925 Number of bogon 32-bit ASNs visible in the Routing Table: 88 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 453 Number of addresses announced to Internet: 3107076352 Equivalent to 185 /8s, 50 /16s and 57 /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: 322481 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 263046 Total APNIC prefixes after maximum aggregation: 77964 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 254023 Unique aggregates announced from the APNIC address blocks: 105118 APNIC Region origin ASes present in the Internet Routing Table: 14685 APNIC Prefixes per ASN: 17.30 APNIC Region origin ASes announcing only one prefix: 4462 APNIC Region transit ASes present in the Internet Routing Table: 1983 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10251 Number of APNIC addresses announced to Internet: 749263616 Equivalent to 44 /8s, 168 /16s and 219 /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: 289994 Total ARIN prefixes after maximum aggregation: 131891 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291691 Unique aggregates announced from the ARIN address blocks: 141279 ARIN Region origin ASes present in the Internet Routing Table: 19209 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7038 ARIN Region transit ASes present in the Internet Routing Table: 1926 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5253 Number of ARIN addresses announced to Internet: 1349249536 Equivalent to 80 /8s, 107 /16s and 234 /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: 275888 Total RIPE prefixes after maximum aggregation: 136185 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274871 Unique aggregates announced from the RIPE address blocks: 177991 RIPE Region origin ASes present in the Internet Routing Table: 28946 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12063 RIPE Region transit ASes present in the Internet Routing Table: 4009 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 33 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12572 Number of RIPE addresses announced to Internet: 732148992 Equivalent to 43 /8s, 163 /16s and 181 /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: 124651 Total LACNIC prefixes after maximum aggregation: 29833 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 120959 Unique aggregates announced from the LACNIC address blocks: 49105 LACNIC Region origin ASes present in the Internet Routing Table: 11269 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2662 LACNIC Region transit ASes present in the Internet Routing Table: 2514 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9231 Number of LACNIC addresses announced to Internet: 171142144 Equivalent to 10 /8s, 51 /16s and 108 /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: 34600 Total AfriNIC prefixes after maximum aggregation: 6769 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 47356 Unique aggregates announced from the AfriNIC address blocks: 14063 AfriNIC Region origin ASes present in the Internet Routing Table: 1934 AfriNIC Prefixes per ASN: 24.49 AfriNIC Region origin ASes announcing only one prefix: 697 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 41 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1300 Number of AfriNIC addresses announced to Internet: 105021184 Equivalent to 6 /8s, 66 /16s and 127 /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 12059 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6139 840 618 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4517 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3910 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3696 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3290 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2911 864 509 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2818 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2188 429 192 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 13680 40974 5278 AMAZON-02, US 11492 4819 319 605 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3515 8771 859 COGENT-174, US 22773 3342 3030 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3223 54766 2474 DNIC-AS-00749, US 396982 3197 3856 433 GOOGLE-CLOUD-PLATFORM, US 16625 2929 1238 2180 AKAMAI-AS, US 4155 2860 217 1727 USDA-1, 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 7595 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3918 3395 123 AKAMAI-ASN1, NL 9009 3815 362 2132 M247, RO 12389 3115 2315 869 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 583 TELLCOM-AS, TR 212238 2323 164 1691 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1579 1852 14 TE-AS TE-AS, EG 203020 1523 191 672 HOSTROYALE, IN 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 12318 3260 574 UNINET, MX 10620 3484 474 1024 Telmex Colombia S.A., CO 13999 2525 511 349 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1372 2435 269 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1188 371 22 Telefonica del Peru S.A.A., PE 11664 1072 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1067 68 369 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1020 373 162 Axtel, S.A.B. de C.V., MX 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 1709 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1316 1490 359 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1228 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 848 520 43 Vodafone-, EG 36914 576 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 532 56 53 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 13680 40974 5278 AMAZON-02, US 8151 12318 3260 574 UNINET, MX 9808 12059 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7595 1712 148 UNI2-AS, ES 7545 6139 840 618 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4819 319 605 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4517 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3918 3395 123 AKAMAI-ASN1, NL 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 12059 11943 CHINAMOBILE-CN China Mobile Communications Grou 8151 12318 11744 UNINET, MX 12479 7595 7447 UNI2-AS, ES 7545 6139 5521 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4517 4490 FPT-AS-AP FPT Telecom Company, VN 11492 4819 4214 CABLEONE, US 9498 4464 4153 BBIL-AP BHARTI Airtel Ltd., IN 7552 3910 3883 VIETEL-AS-AP Viettel Group, VN 20940 3918 3795 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 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /11:92 /12:298 /13:577 /14:1200 /15:2125 /16:13753 /17:8163 /18:13427 /19:24417 /20:43813 /21:51516 /22:111648 /23:102481 /24:615772 /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 12479 6543 7595 UNI2-AS, ES 8151 6537 12318 UNINET, MX 11492 3611 4819 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2814 3855 VIASAT-SP-BACKBONE, US 22773 2493 3342 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2351 13680 AMAZON-02, US 30036 2266 2607 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2195 3484 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) ---------------------------------------------- 1:2418 2:1488 3:857 4:10 5:4745 6:163 7:6 8:1556 9:2 11:172 12:1340 13:463 14:2574 15:367 16:286 17:375 18:897 20:559 21:4 22:188 23:7711 24:2671 25:2 27:2788 29:19 31:3352 32:35 33:1 34:83 35:257 36:3853 37:4560 38:9515 39:941 40:248 41:4246 42:2000 43:2731 44:374 45:18700 46:5082 47:336 49:1886 50:1999 51:591 52:1553 54:325 55:1110 56:11 57:272 58:2207 59:1301 60:1171 61:2825 62:2979 63:1786 64:5531 65:2155 66:4719 67:3096 68:1069 69:3875 70:1041 71:620 72:2852 74:2792 75:1502 76:605 77:2773 78:1897 79:1691 80:2204 81:2052 82:3166 83:1436 84:1888 85:3474 86:1089 87:2124 88:1310 89:4409 90:777 91:8414 92:2704 93:2950 94:4065 95:4395 96:1451 97:310 98:954 99:693 100:71 101:1444 102:3910 103:32846 104:5239 105:803 106:972 107:2655 108:1261 109:4183 110:2243 111:3341 112:2281 113:1851 114:1968 115:2218 116:2086 117:2622 118:2982 119:1923 120:2172 121:1325 122:2789 123:2230 124:1703 125:2898 126:91 128:1582 129:963 130:1292 131:2041 132:763 133:450 134:1588 135:351 136:1461 137:1130 138:2826 139:1582 140:1624 141:1507 142:1911 143:1945 144:1173 145:565 146:2174 147:2094 148:2724 149:2935 150:1296 151:2215 152:2069 153:524 154:7543 155:1840 156:3074 157:1954 158:1351 159:2523 160:3600 161:1888 162:3875 163:2244 164:1876 165:2386 166:1526 167:2018 168:3977 169:779 170:5131 171:1002 172:4226 173:3385 174:916 175:1328 176:3734 177:4792 178:3935 179:2310 180:2720 181:4131 182:3528 183:2299 184:2064 185:21570 186:5265 187:4683 188:4267 189:4355 190:9564 191:1498 192:11307 193:9471 194:7766 195:5580 196:3285 197:3201 198:6076 199:8591 200:8165 201:6402 202:10399 203:10644 204:4635 205:3591 206:4472 207:3514 208:4261 209:5124 210:4600 211:2599 212:4541 213:3808 214:1022 215:48 216:6738 217:3227 218:1373 219:396 220:2147 221:1201 222:744 223:2721 End of report