IPv4 R&E Routing Table Report 23:05 GMT Fri 25 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: 989108 Prefixes after maximum aggregation (per Origin AS): 383320 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 487851 Number of IPv4 prefixes with a valid ROA: 556773 Number of IPv4 prefixes with an invalid ROA: 890 Number of IPv4 prefixes with no ROA: 431445 Total ASes present in the Internet Routing Table: 76953 Prefixes per ASN: 12.85 Origin-only ASes present in the Internet Routing Table: 65933 Origin ASes announcing only one prefix: 26922 Transit ASes present in the Internet Routing Table: 11020 Transit-only ASes present in the Internet Routing Table: 542 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: 1176 Number of instances of unregistered ASNs: 1221 Number of 32-bit ASNs allocated by the RIRs: 46918 Number of 32-bit ASNs visible in the Routing Table: 38601 Prefixes from 32-bit ASNs in the Routing Table: 206646 Number of bogon 32-bit ASNs visible in the Routing Table: 108 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 454 Number of addresses announced to Internet: 3106997504 Equivalent to 185 /8s, 49 /16s and 5 /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: 322396 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 263008 Total APNIC prefixes after maximum aggregation: 77931 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 253994 Unique aggregates announced from the APNIC address blocks: 105063 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: 4476 APNIC Region transit ASes present in the Internet Routing Table: 1985 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: 10248 Number of APNIC addresses announced to Internet: 749256192 Equivalent to 44 /8s, 168 /16s and 190 /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: 290006 Total ARIN prefixes after maximum aggregation: 131812 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291719 Unique aggregates announced from the ARIN address blocks: 141354 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: 1923 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5253 Number of ARIN addresses announced to Internet: 1349179392 Equivalent to 80 /8s, 106 /16s and 216 /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: 276099 Total RIPE prefixes after maximum aggregation: 136178 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 275032 Unique aggregates announced from the RIPE address blocks: 177961 RIPE Region origin ASes present in the Internet Routing Table: 28945 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12057 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: 732140288 Equivalent to 43 /8s, 163 /16s and 147 /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: 124230 Total LACNIC prefixes after maximum aggregation: 29859 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 120539 Unique aggregates announced from the LACNIC address blocks: 49050 LACNIC Region origin ASes present in the Internet Routing Table: 11263 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2649 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: 9226 Number of LACNIC addresses announced to Internet: 171157760 Equivalent to 10 /8s, 51 /16s and 169 /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: 34589 Total AfriNIC prefixes after maximum aggregation: 6769 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 47370 Unique aggregates announced from the AfriNIC address blocks: 14041 AfriNIC Region origin ASes present in the Internet Routing Table: 1936 AfriNIC Prefixes per ASN: 24.47 AfriNIC Region origin ASes announcing only one prefix: 702 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: 1302 Number of AfriNIC addresses announced to Internet: 105011712 Equivalent to 6 /8s, 66 /16s and 90 /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 12058 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6139 840 618 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4506 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 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 2915 864 511 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2818 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2186 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 13664 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 2937 1238 2179 AKAMAI-AS, US 4155 2877 218 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 7594 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3924 3395 123 AKAMAI-ASN1, NL 9009 3814 362 2131 M247, RO 12389 3116 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 1580 1852 14 TE-AS TE-AS, EG 203020 1526 189 670 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 12313 3260 575 UNINET, MX 10620 3484 474 1024 Telmex Colombia S.A., CO 13999 2535 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 1348 787 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1189 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 1729 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1313 1489 356 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1228 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 832 520 43 Vodafone-, EG 36914 574 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 13664 40974 5278 AMAZON-02, US 8151 12313 3260 575 UNINET, MX 9808 12058 8761 115 CHINAMOBILE-CN China Mobile Communication 12479 7594 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 4506 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3924 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 12058 11943 CHINAMOBILE-CN China Mobile Communications Grou 8151 12313 11738 UNINET, MX 12479 7594 7446 UNI2-AS, ES 7545 6139 5521 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4506 4480 FPT-AS-AP FPT Telecom Company, VN 11492 4819 4214 CABLEONE, US 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 3891 VIETEL-AS-AP Viettel Group, VN 20940 3924 3801 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 /16:13752 /17:8161 /18:13432 /19:24427 /20:43816 /21:51526 /22:111646 /23:102519 /24:615466 /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 6542 7594 UNI2-AS, ES 8151 6533 12313 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 2345 13664 AMAZON-02, US 30036 2282 2623 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 2:1493 3:857 4:10 5:4763 6:163 7:6 8:1556 9:2 11:172 12:1341 13:463 14:2574 15:366 16:286 17:374 18:897 20:559 21:4 22:188 23:7725 24:2675 25:2 27:2790 29:19 31:3346 32:35 33:1 34:83 35:256 36:3853 37:4556 38:9495 39:940 40:248 41:4250 42:1990 43:2732 44:374 45:18702 46:5074 47:336 49:1884 50:2008 51:587 52:1549 54:323 55:1103 56:11 57:272 58:2207 59:1301 60:1171 61:2828 62:2969 63:1787 64:5527 65:2152 66:4717 67:3095 68:1070 69:3877 70:1041 71:620 72:2853 74:2787 75:1504 76:605 77:2774 78:1899 79:1693 80:2215 81:2044 82:3184 83:1434 84:1888 85:3481 86:1092 87:2127 88:1309 89:4414 90:777 91:8402 92:2707 93:2951 94:4075 95:4397 96:1451 97:309 98:954 99:692 100:71 101:1444 102:3907 103:32845 104:5241 105:802 106:971 107:2655 108:1262 109:4186 110:2243 111:3339 112:2285 113:1852 114:1966 115:2215 116:2083 117:2622 118:2977 119:1923 120:2172 121:1325 122:2788 123:2230 124:1703 125:2898 126:91 128:1586 129:963 130:1292 131:2031 132:768 133:450 134:1585 135:351 136:1461 137:1129 138:2820 139:1585 140:1630 141:1516 142:1912 143:1929 144:1174 145:565 146:2174 147:2095 148:2723 149:2937 150:1295 151:2228 152:2066 153:522 154:7541 155:1848 156:3078 157:1952 158:1351 159:2515 160:3601 161:1889 162:3879 163:2244 164:1870 165:2379 166:1527 167:2017 168:3948 169:781 170:5120 171:1002 172:4229 173:3395 174:917 175:1328 176:3735 177:4684 178:3933 179:2292 180:2724 181:4122 182:3535 183:2304 184:2064 185:21584 186:5226 187:4653 188:4272 189:4361 190:9578 191:1494 192:11312 193:9464 194:7769 195:5584 196:3291 197:3191 198:6077 199:8620 200:8089 201:6362 202:10397 203:10640 204:4633 205:3580 206:4470 207:3515 208:4266 209:5123 210:4600 211:2599 212:4547 213:3818 214:1022 215:48 216:6741 217:3225 218:1371 219:396 220:2145 221:1196 222:741 223:2688 End of report