IPv4 R&E Routing Table Report 23:05 GMT Thu 14 Aug, 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: 992630 Prefixes after maximum aggregation (per Origin AS): 385056 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 489256 Number of IPv4 prefixes with a valid ROA: 561338 Number of IPv4 prefixes with an invalid ROA: 806 Number of IPv4 prefixes with no ROA: 430486 Total ASes present in the Internet Routing Table: 77079 Prefixes per ASN: 12.88 Origin-only ASes present in the Internet Routing Table: 66027 Origin ASes announcing only one prefix: 27002 Transit ASes present in the Internet Routing Table: 11052 Transit-only ASes present in the Internet Routing Table: 550 Paths with bogon ASNs present in the IPv4 Routing Table: 28 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 97 Max AS path prepend of ASN ( 37447) 53 Prefixes from unregistered ASNs in the Routing Table: 1146 Number of instances of unregistered ASNs: 1178 Number of 32-bit ASNs allocated by the RIRs: 47139 Number of 32-bit ASNs visible in the Routing Table: 38739 Prefixes from 32-bit ASNs in the Routing Table: 207669 Number of bogon 32-bit ASNs visible in the Routing Table: 82 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 419 Number of addresses announced to Internet: 3107434240 Equivalent to 185 /8s, 55 /16s and 175 /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: 323177 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265431 Total APNIC prefixes after maximum aggregation: 78406 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 256204 Unique aggregates announced from the APNIC address blocks: 105180 APNIC Region origin ASes present in the Internet Routing Table: 14714 APNIC Prefixes per ASN: 17.41 APNIC Region origin ASes announcing only one prefix: 4486 APNIC Region transit ASes present in the Internet Routing Table: 1994 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10274 Number of APNIC addresses announced to Internet: 749522176 Equivalent to 44 /8s, 172 /16s and 205 /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: 290484 Total ARIN prefixes after maximum aggregation: 132358 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 292110 Unique aggregates announced from the ARIN address blocks: 141823 ARIN Region origin ASes present in the Internet Routing Table: 19223 ARIN Prefixes per ASN: 15.20 ARIN Region origin ASes announcing only one prefix: 7049 ARIN Region transit ASes present in the Internet Routing Table: 1925 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: 5277 Number of ARIN addresses announced to Internet: 1349313024 Equivalent to 80 /8s, 108 /16s and 226 /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: 276966 Total RIPE prefixes after maximum aggregation: 136818 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276127 Unique aggregates announced from the RIPE address blocks: 178654 RIPE Region origin ASes present in the Internet Routing Table: 29003 RIPE Prefixes per ASN: 9.52 RIPE Region origin ASes announcing only one prefix: 12086 RIPE Region transit ASes present in the Internet Routing Table: 4022 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: 12632 Number of RIPE addresses announced to Internet: 732160256 Equivalent to 43 /8s, 163 /16s and 225 /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: 124107 Total LACNIC prefixes after maximum aggregation: 29930 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 120361 Unique aggregates announced from the LACNIC address blocks: 49077 LACNIC Region origin ASes present in the Internet Routing Table: 11275 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2672 LACNIC Region transit ASes present in the Internet Routing Table: 2536 Average LACNIC Region AS path length visible: 5.5 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9239 Number of LACNIC addresses announced to Internet: 171148800 Equivalent to 10 /8s, 51 /16s and 134 /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: 34496 Total AfriNIC prefixes after maximum aggregation: 6800 AfriNIC Deaggregation factor: 5.07 Prefixes being announced from the AfriNIC address blocks: 47409 Unique aggregates announced from the AfriNIC address blocks: 14149 AfriNIC Region origin ASes present in the Internet Routing Table: 1952 AfriNIC Prefixes per ASN: 24.29 AfriNIC Region origin ASes announcing only one prefix: 709 AfriNIC Region transit ASes present in the Internet Routing Table: 381 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1317 Number of AfriNIC addresses announced to Internet: 105049856 Equivalent to 6 /8s, 66 /16s and 239 /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 12877 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6137 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4601 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3963 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3715 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3300 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2970 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 865 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2177 427 181 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 13816 41096 5319 AMAZON-02, US 11492 4753 315 752 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3645 1320 82 SHAW, CA 174 3443 8769 860 COGENT-174, US 22773 3345 3029 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3209 3858 436 GOOGLE-CLOUD-PLATFORM, US 4155 2935 229 1748 USDA-1, US 16625 2906 1224 2167 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 7554 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3906 3395 123 AKAMAI-ASN1, NL 9009 3859 365 2176 M247, RO 12389 3112 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 584 TELLCOM-AS, TR 212238 2330 165 1694 CDNEXT, GB 13188 1605 100 37 TRIOLAN, UA 8452 1572 1852 14 TE-AS TE-AS, EG 203020 1520 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 12331 3272 580 UNINET, MX 10620 3481 472 1050 Telmex Colombia S.A., CO 13999 2528 511 349 Mega Cable, S.A. de C.V., MX 11830 1986 369 64 Instituto Costarricense de Electricidad y 28573 1371 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1184 371 22 Telefonica del Peru S.A.A., PE 11664 1086 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1055 67 375 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1015 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 1770 660 28 RAYA-AS, EG 29571 1494 94 32 ORANGE-COTE-IVOIRE, CI 36992 1421 1501 377 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1242 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 991 523 47 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 557 82 3 KENET-AS, KE 15399 529 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 13816 41096 5319 AMAZON-02, US 9808 12877 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12331 3272 580 UNINET, MX 12479 7554 1711 149 UNI2-AS, ES 7545 6137 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4753 315 752 CABLEONE, US 18403 4601 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3963 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 12877 12762 CHINAMOBILE-CN China Mobile Communications Grou 8151 12331 11751 UNINET, MX 12479 7554 7405 UNI2-AS, ES 7545 6137 5521 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4601 4574 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4753 4001 CABLEONE, US 7552 3963 3936 VIETEL-AS-AP Viettel Group, VN 20940 3906 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 32182 UNALLOCATED 8.9.96.0/23 174 COGENT-174, 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 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, 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 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 /14:1199 /15:2129 /16:13733 /17:8134 /18:13413 /19:24432 /20:43856 /21:51621 /22:111830 /23:102594 /24:618651 /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 6551 12331 UNINET, MX 12479 6514 7554 UNI2-AS, ES 11492 3564 4753 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3442 3645 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2497 3345 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2360 13816 AMAZON-02, US 30036 2298 2641 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2201 3481 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) ---------------------------------------------- 1:2423 2:1495 3:883 4:10 5:4769 6:157 7:6 8:1544 9:3 11:172 12:1255 13:480 14:2584 15:373 16:286 17:379 18:899 20:563 21:4 22:188 23:7748 24:2654 25:2 27:2798 29:19 31:3370 32:29 33:1 34:83 35:261 36:4286 37:4555 38:9447 39:982 40:264 41:4251 42:2068 43:2736 44:380 45:18719 46:5110 47:338 49:1932 50:2045 51:592 52:1553 54:317 55:1104 56:11 57:272 58:2262 59:1291 60:1175 61:2920 62:3012 63:1779 64:5580 65:2142 66:4761 67:3092 68:1075 69:3882 70:1038 71:625 72:2846 74:2800 75:1505 76:603 77:2773 78:1891 79:1736 80:2206 81:2063 82:3251 83:1436 84:1915 85:3449 86:1120 87:2135 88:1316 89:4455 90:775 91:8410 92:2761 93:2963 94:4137 95:4437 96:1442 97:310 98:959 99:707 100:71 101:1470 102:3887 103:32850 104:5264 105:768 106:874 107:2644 108:1262 109:4179 110:2246 111:3580 112:2452 113:1861 114:1976 115:2186 116:2081 117:2694 118:3042 119:1922 120:2203 121:1328 122:2797 123:2224 124:1706 125:2925 126:90 128:1583 129:969 130:1287 131:2049 132:775 133:450 134:1615 135:355 136:1470 137:1131 138:2818 139:1599 140:1614 141:1533 142:1912 143:1973 144:1176 145:585 146:2170 147:2100 148:2707 149:2979 150:1260 151:2358 152:2102 153:526 154:7528 155:1877 156:3129 157:1957 158:1380 159:2525 160:3600 161:1905 162:3885 163:2247 164:1880 165:2466 166:1538 167:2036 168:3867 169:778 170:5207 171:1004 172:4230 173:3397 174:905 175:1326 176:3741 177:4698 178:3986 179:2313 180:2731 181:4173 182:3558 183:2386 184:2056 185:21607 186:5239 187:4640 188:4282 189:4351 190:9512 191:1519 192:11306 193:9474 194:7791 195:5620 196:3251 197:3207 198:6083 199:8633 200:8077 201:6374 202:10389 203:10654 204:4571 205:3589 206:4501 207:3511 208:4272 209:5140 210:4667 211:2641 212:4591 213:3820 214:1039 215:52 216:6789 217:3292 218:1430 219:399 220:2141 221:1208 222:742 223:2825 End of report