IPv4 R&E Routing Table Report 23:05 GMT Thu 31 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: 990459 Prefixes after maximum aggregation (per Origin AS): 383789 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 488322 Number of IPv4 prefixes with a valid ROA: 557752 Number of IPv4 prefixes with an invalid ROA: 629 Number of IPv4 prefixes with no ROA: 432078 Total ASes present in the Internet Routing Table: 77000 Prefixes per ASN: 12.86 Origin-only ASes present in the Internet Routing Table: 65972 Origin ASes announcing only one prefix: 26929 Transit ASes present in the Internet Routing Table: 11028 Transit-only ASes present in the Internet Routing Table: 552 Paths with bogon ASNs present in the IPv4 Routing Table: 32 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: 1151 Number of instances of unregistered ASNs: 1189 Number of 32-bit ASNs allocated by the RIRs: 46997 Number of 32-bit ASNs visible in the Routing Table: 38641 Prefixes from 32-bit ASNs in the Routing Table: 206842 Number of bogon 32-bit ASNs visible in the Routing Table: 92 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 437 Number of addresses announced to Internet: 3107360256 Equivalent to 185 /8s, 54 /16s and 142 /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: 322603 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 263802 Total APNIC prefixes after maximum aggregation: 78108 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 254924 Unique aggregates announced from the APNIC address blocks: 105105 APNIC Region origin ASes present in the Internet Routing Table: 14693 APNIC Prefixes per ASN: 17.35 APNIC Region origin ASes announcing only one prefix: 4459 APNIC Region transit ASes present in the Internet Routing Table: 1993 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: 10252 Number of APNIC addresses announced to Internet: 749296896 Equivalent to 44 /8s, 169 /16s and 93 /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: 290407 Total ARIN prefixes after maximum aggregation: 131913 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291840 Unique aggregates announced from the ARIN address blocks: 141396 ARIN Region origin ASes present in the Internet Routing Table: 19220 ARIN Prefixes per ASN: 15.18 ARIN Region origin ASes announcing only one prefix: 7049 ARIN Region transit ASes present in the Internet Routing Table: 1918 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: 5257 Number of ARIN addresses announced to Internet: 1349341696 Equivalent to 80 /8s, 109 /16s and 82 /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: 276009 Total RIPE prefixes after maximum aggregation: 136347 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 275022 Unique aggregates announced from the RIPE address blocks: 178227 RIPE Region origin ASes present in the Internet Routing Table: 28962 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12059 RIPE Region transit ASes present in the Internet Routing Table: 4020 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12595 Number of RIPE addresses announced to Internet: 732253184 Equivalent to 43 /8s, 165 /16s and 76 /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: 124436 Total LACNIC prefixes after maximum aggregation: 29852 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 120806 Unique aggregates announced from the LACNIC address blocks: 49149 LACNIC Region origin ASes present in the Internet Routing Table: 11266 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2655 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: 171191296 Equivalent to 10 /8s, 52 /16s and 44 /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: 34654 Total AfriNIC prefixes after maximum aggregation: 6824 AfriNIC Deaggregation factor: 5.08 Prefixes being announced from the AfriNIC address blocks: 47430 Unique aggregates announced from the AfriNIC address blocks: 14074 AfriNIC Region origin ASes present in the Internet Routing Table: 1941 AfriNIC Prefixes per ASN: 24.44 AfriNIC Region origin ASes announcing only one prefix: 707 AfriNIC Region transit ASes present in the Internet Routing Table: 377 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: 1306 Number of AfriNIC addresses announced to Internet: 105030656 Equivalent to 6 /8s, 66 /16s and 164 /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 12380 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6138 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4547 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3908 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3676 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3294 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2914 864 510 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2890 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2179 427 185 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 13670 40973 5267 AMAZON-02, US 11492 4826 320 606 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3500 8770 854 COGENT-174, US 22773 3342 3030 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3200 3856 434 GOOGLE-CLOUD-PLATFORM, US 16625 2927 1237 2182 AKAMAI-AS, US 4155 2894 219 1741 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 7588 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3907 3395 123 AKAMAI-ASN1, NL 9009 3824 363 2140 M247, RO 12389 3111 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 583 TELLCOM-AS, TR 212238 2313 164 1683 CDNEXT, GB 13188 1605 100 37 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 12321 3272 576 UNINET, MX 10620 3480 473 1036 Telmex Colombia S.A., CO 13999 2522 511 354 Mega Cable, S.A. de C.V., MX 11830 1984 369 64 Instituto Costarricense de Electricidad y 28573 1372 2437 265 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 1069 68 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1022 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 1725 660 28 RAYA-AS, EG 29571 1604 102 51 ORANGE-COTE-IVOIRE, CI 36992 1396 1492 378 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1232 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 914 520 43 Vodafone-, EG 36914 569 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 13670 40973 5267 AMAZON-02, US 9808 12380 8762 116 CHINAMOBILE-CN China Mobile Communication 8151 12321 3272 576 UNINET, MX 12479 7588 1712 148 UNI2-AS, ES 7545 6138 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4826 320 606 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4547 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3908 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 12380 12264 CHINAMOBILE-CN China Mobile Communications Grou 8151 12321 11745 UNINET, MX 12479 7588 7440 UNI2-AS, ES 7545 6138 5515 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4547 4520 FPT-AS-AP FPT Telecom Company, VN 11492 4826 4220 CABLEONE, US 9498 4464 4153 BBIL-AP BHARTI Airtel Ltd., IN 7552 3908 3881 VIETEL-AS-AP Viettel Group, VN 20940 3907 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 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 395195 UNALLOCATED 8.38.115.0/24 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 23.143.4.0/24 Origin: 401866 MASTER-IT-SUPPORT, PR 23.143.4.0/24 Transit: 46962 HRCOM, PR 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 /14:1199 /15:2129 /16:13753 /17:8165 /18:13415 /19:24442 /20:43862 /21:51577 /22:111807 /23:102561 /24:616511 /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 6540 12321 UNINET, MX 12479 6539 7588 UNI2-AS, ES 11492 3618 4826 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 2362 13670 AMAZON-02, US 30036 2291 2632 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2196 3480 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) ---------------------------------------------- 1:2422 2:1490 3:857 4:10 5:4742 6:163 7:6 8:1546 9:2 11:172 12:1340 13:453 14:2573 15:368 16:286 17:377 18:899 20:561 21:4 22:188 23:7716 24:2676 25:2 27:2785 29:19 31:3343 32:35 33:1 34:83 35:260 36:4058 37:4558 38:9488 39:946 40:247 41:4251 42:2023 43:2732 44:374 45:18700 46:5064 47:335 49:1899 50:2027 51:591 52:1554 54:325 55:1048 56:11 57:271 58:2213 59:1303 60:1172 61:2913 62:2973 63:1784 64:5543 65:2165 66:4736 67:3093 68:1069 69:3877 70:1038 71:623 72:2850 74:2791 75:1503 76:610 77:2768 78:1895 79:1703 80:2203 81:2043 82:3174 83:1436 84:1888 85:3481 86:1093 87:2122 88:1306 89:4427 90:778 91:8412 92:2712 93:2943 94:4057 95:4397 96:1447 97:309 98:956 99:695 100:71 101:1473 102:3888 103:32859 104:5219 105:805 106:971 107:2657 108:1260 109:4176 110:2241 111:3440 112:2348 113:1855 114:1967 115:2196 116:2091 117:2639 118:2985 119:1938 120:2186 121:1325 122:2788 123:2227 124:1702 125:2903 126:91 128:1583 129:963 130:1293 131:2046 132:775 133:450 134:1594 135:351 136:1459 137:1128 138:2826 139:1591 140:1626 141:1520 142:1911 143:1958 144:1170 145:565 146:2174 147:2098 148:2722 149:2942 150:1287 151:2255 152:2067 153:524 154:7578 155:1853 156:3076 157:1955 158:1359 159:2519 160:3595 161:1892 162:3890 163:2236 164:1878 165:2421 166:1537 167:2010 168:3957 169:779 170:5139 171:998 172:4223 173:3407 174:919 175:1330 176:3732 177:4744 178:3930 179:2327 180:2729 181:4135 182:3548 183:2322 184:2064 185:21568 186:5247 187:4649 188:4265 189:4367 190:9559 191:1512 192:11304 193:9471 194:7779 195:5590 196:3278 197:3192 198:6080 199:8616 200:8092 201:6378 202:10391 203:10651 204:4635 205:3568 206:4445 207:3512 208:4260 209:5113 210:4637 211:2605 212:4551 213:3807 214:1028 215:48 216:6781 217:3257 218:1394 219:400 220:2151 221:1204 222:739 223:2744 End of report