IPv4 R&E Routing Table Report 23:05 GMT Sun 03 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: 990958 Prefixes after maximum aggregation (per Origin AS): 383934 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 488566 Number of IPv4 prefixes with a valid ROA: 546442 Number of IPv4 prefixes with an invalid ROA: 860 Number of IPv4 prefixes with no ROA: 443656 Total ASes present in the Internet Routing Table: 77018 Prefixes per ASN: 12.87 Origin-only ASes present in the Internet Routing Table: 65983 Origin ASes announcing only one prefix: 26933 Transit ASes present in the Internet Routing Table: 11035 Transit-only ASes present in the Internet Routing Table: 548 Paths with bogon ASNs present in the IPv4 Routing Table: 25 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: 1129 Number of instances of unregistered ASNs: 1161 Number of 32-bit ASNs allocated by the RIRs: 47047 Number of 32-bit ASNs visible in the Routing Table: 38665 Prefixes from 32-bit ASNs in the Routing Table: 207060 Number of bogon 32-bit ASNs visible in the Routing Table: 78 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 407 Number of addresses announced to Internet: 3107651072 Equivalent to 185 /8s, 58 /16s and 254 /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: 322815 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 263899 Total APNIC prefixes after maximum aggregation: 78082 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 255089 Unique aggregates announced from the APNIC address blocks: 105143 APNIC Region origin ASes present in the Internet Routing Table: 14697 APNIC Prefixes per ASN: 17.36 APNIC Region origin ASes announcing only one prefix: 4466 APNIC Region transit ASes present in the Internet Routing Table: 1998 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: 10257 Number of APNIC addresses announced to Internet: 749644544 Equivalent to 44 /8s, 174 /16s and 171 /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: 290514 Total ARIN prefixes after maximum aggregation: 132042 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 292004 Unique aggregates announced from the ARIN address blocks: 141598 ARIN Region origin ASes present in the Internet Routing Table: 19226 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7051 ARIN Region transit ASes present in the Internet Routing Table: 1922 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: 5264 Number of ARIN addresses announced to Internet: 1349342976 Equivalent to 80 /8s, 109 /16s and 87 /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: 276182 Total RIPE prefixes after maximum aggregation: 136373 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 275125 Unique aggregates announced from the RIPE address blocks: 178205 RIPE Region origin ASes present in the Internet Routing Table: 28968 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12061 RIPE Region transit ASes present in the Internet Routing Table: 4018 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: 12600 Number of RIPE addresses announced to Internet: 732146432 Equivalent to 43 /8s, 163 /16s and 171 /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: 124509 Total LACNIC prefixes after maximum aggregation: 29865 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 120869 Unique aggregates announced from the LACNIC address blocks: 49160 LACNIC Region origin ASes present in the Internet Routing Table: 11278 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2648 LACNIC Region transit ASes present in the Internet Routing Table: 2520 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: 9237 Number of LACNIC addresses announced to Internet: 171198464 Equivalent to 10 /8s, 52 /16s and 72 /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: 34725 Total AfriNIC prefixes after maximum aggregation: 6834 AfriNIC Deaggregation factor: 5.08 Prefixes being announced from the AfriNIC address blocks: 47464 Unique aggregates announced from the AfriNIC address blocks: 14104 AfriNIC Region origin ASes present in the Internet Routing Table: 1942 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: 374 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: 1307 Number of AfriNIC addresses announced to Internet: 105079040 Equivalent to 6 /8s, 67 /16s and 97 /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 12383 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6137 837 622 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4577 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3909 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3676 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3293 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2915 864 511 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2891 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2178 427 184 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 13698 41055 5282 AMAZON-02, US 11492 4827 320 607 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3490 8769 853 COGENT-174, US 22773 3341 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 2926 1237 2181 AKAMAI-AS, US 4155 2890 219 1734 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 7578 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3905 3395 123 AKAMAI-ASN1, NL 9009 3839 364 2155 M247, RO 12389 3111 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 583 TELLCOM-AS, TR 212238 2310 164 1680 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 12320 3271 573 UNINET, MX 10620 3480 473 1036 Telmex Colombia S.A., CO 13999 2522 511 354 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1371 2435 269 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1186 371 22 Telefonica del Peru S.A.A., PE 11664 1069 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 1734 660 28 RAYA-AS, EG 29571 1604 102 51 ORANGE-COTE-IVOIRE, CI 36992 1409 1494 372 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1232 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 939 520 43 Vodafone-, EG 20011 568 154 212 INTERNET-SOLUTIONS, ZA 36914 567 82 3 KENET-AS, KE 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 13698 41055 5282 AMAZON-02, US 9808 12383 8762 116 CHINAMOBILE-CN China Mobile Communication 8151 12320 3271 573 UNINET, MX 12479 7578 1711 149 UNI2-AS, ES 7545 6137 837 622 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4827 320 607 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4577 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3909 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 12383 12267 CHINAMOBILE-CN China Mobile Communications Grou 8151 12320 11747 UNINET, MX 12479 7578 7429 UNI2-AS, ES 7545 6137 5515 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4577 4550 FPT-AS-AP FPT Telecom Company, VN 11492 4827 4220 CABLEONE, US 9498 4464 4153 BBIL-AP BHARTI Airtel Ltd., IN 7552 3909 3882 VIETEL-AS-AP Viettel Group, VN 20940 3905 3782 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 23.147.224.0/24 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 /16:13760 /17:8161 /18:13425 /19:24448 /20:43866 /21:51566 /22:111783 /23:102555 /24:617028 /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 6543 12320 UNINET, MX 12479 6536 7578 UNI2-AS, ES 11492 3619 4827 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2814 3855 VIASAT-SP-BACKBONE, US 22773 2492 3341 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2364 13698 AMAZON-02, US 30036 2292 2633 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) ---------------------------------------------- 1:2417 2:1494 3:863 4:10 5:4755 6:163 7:6 8:1546 9:2 11:172 12:1331 13:457 14:2579 15:368 16:286 17:376 18:899 20:561 21:4 22:188 23:7718 24:2675 25:2 27:2789 29:19 31:3351 32:35 33:1 34:83 35:260 36:4061 37:4558 38:9532 39:948 40:248 41:4267 42:2048 43:2733 44:376 45:18724 46:5063 47:336 49:1899 50:2042 51:591 52:1554 54:325 55:1100 56:11 57:271 58:2217 59:1300 60:1172 61:2915 62:2991 63:1783 64:5542 65:2168 66:4725 67:3094 68:1067 69:3880 70:1038 71:624 72:2851 74:2794 75:1503 76:610 77:2774 78:1896 79:1712 80:2204 81:2046 82:3184 83:1437 84:1900 85:3482 86:1095 87:2126 88:1311 89:4429 90:778 91:8405 92:2721 93:2943 94:4068 95:4400 96:1446 97:309 98:955 99:695 100:71 101:1473 102:3888 103:32858 104:5284 105:805 106:971 107:2642 108:1261 109:4172 110:2239 111:3447 112:2349 113:1854 114:1969 115:2215 116:2092 117:2639 118:2986 119:1939 120:2191 121:1325 122:2789 123:2231 124:1705 125:2903 126:91 128:1578 129:963 130:1288 131:2056 132:775 133:450 134:1596 135:351 136:1465 137:1124 138:2836 139:1594 140:1622 141:1520 142:1890 143:1956 144:1172 145:569 146:2178 147:2101 148:2718 149:2940 150:1288 151:2254 152:2091 153:524 154:7566 155:1852 156:3057 157:1944 158:1356 159:2519 160:3594 161:1894 162:3892 163:2247 164:1874 165:2429 166:1533 167:2016 168:3985 169:776 170:5178 171:999 172:4230 173:3407 174:919 175:1330 176:3737 177:4794 178:3938 179:2315 180:2728 181:4138 182:3548 183:2325 184:2061 185:21572 186:5259 187:4664 188:4272 189:4373 190:9555 191:1516 192:11300 193:9472 194:7784 195:5584 196:3270 197:3197 198:6089 199:8594 200:8090 201:6402 202:10394 203:10650 204:4580 205:3565 206:4465 207:3510 208:4265 209:5122 210:4635 211:2602 212:4549 213:3808 214:1022 215:48 216:6774 217:3257 218:1394 219:399 220:2152 221:1204 222:739 223:2745 End of report