IPv4 R&E Routing Table Report 23:05 GMT Thu 07 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: 991806 Prefixes after maximum aggregation (per Origin AS): 384371 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 489026 Number of IPv4 prefixes with a valid ROA: 557706 Number of IPv4 prefixes with an invalid ROA: 610 Number of IPv4 prefixes with no ROA: 433490 Total ASes present in the Internet Routing Table: 77065 Prefixes per ASN: 12.87 Origin-only ASes present in the Internet Routing Table: 65997 Origin ASes announcing only one prefix: 26973 Transit ASes present in the Internet Routing Table: 11068 Transit-only ASes present in the Internet Routing Table: 554 Paths with bogon ASNs present in the IPv4 Routing Table: 26 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: 1137 Number of instances of unregistered ASNs: 1169 Number of 32-bit ASNs allocated by the RIRs: 47076 Number of 32-bit ASNs visible in the Routing Table: 38716 Prefixes from 32-bit ASNs in the Routing Table: 207114 Number of bogon 32-bit ASNs visible in the Routing Table: 80 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 429 Number of addresses announced to Internet: 3107594240 Equivalent to 185 /8s, 58 /16s and 32 /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: 323017 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 264499 Total APNIC prefixes after maximum aggregation: 78201 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 255487 Unique aggregates announced from the APNIC address blocks: 105037 APNIC Region origin ASes present in the Internet Routing Table: 14719 APNIC Prefixes per ASN: 17.36 APNIC Region origin ASes announcing only one prefix: 4472 APNIC Region transit ASes present in the Internet Routing Table: 2006 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: 10279 Number of APNIC addresses announced to Internet: 749589504 Equivalent to 44 /8s, 173 /16s and 212 /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: 290894 Total ARIN prefixes after maximum aggregation: 132248 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 292342 Unique aggregates announced from the ARIN address blocks: 141825 ARIN Region origin ASes present in the Internet Routing Table: 19232 ARIN Prefixes per ASN: 15.20 ARIN Region origin ASes announcing only one prefix: 7053 ARIN Region transit ASes present in the Internet Routing Table: 1929 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: 5270 Number of ARIN addresses announced to Internet: 1349305856 Equivalent to 80 /8s, 108 /16s and 198 /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: 276447 Total RIPE prefixes after maximum aggregation: 136471 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 275479 Unique aggregates announced from the RIPE address blocks: 178545 RIPE Region origin ASes present in the Internet Routing Table: 28981 RIPE Prefixes per ASN: 9.51 RIPE Region origin ASes announcing only one prefix: 12079 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: 12616 Number of RIPE addresses announced to Internet: 732179968 Equivalent to 43 /8s, 164 /16s and 46 /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: 124241 Total LACNIC prefixes after maximum aggregation: 29927 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 120598 Unique aggregates announced from the LACNIC address blocks: 49090 LACNIC Region origin ASes present in the Internet Routing Table: 11275 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2660 LACNIC Region transit ASes present in the Internet Routing Table: 2533 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: 9238 Number of LACNIC addresses announced to Internet: 171182848 Equivalent to 10 /8s, 52 /16s and 11 /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: 34588 Total AfriNIC prefixes after maximum aggregation: 6788 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 47471 Unique aggregates announced from the AfriNIC address blocks: 14151 AfriNIC Region origin ASes present in the Internet Routing Table: 1948 AfriNIC Prefixes per ASN: 24.37 AfriNIC Region origin ASes announcing only one prefix: 709 AfriNIC Region transit ASes present in the Internet Routing Table: 378 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: 1313 Number of AfriNIC addresses announced to Internet: 105094656 Equivalent to 6 /8s, 67 /16s and 158 /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 12609 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6139 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4591 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4463 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3942 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3691 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3297 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2969 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2917 864 511 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2179 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 13775 41062 5302 AMAZON-02, US 11492 4830 320 609 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 174 3636 8769 850 COGENT-174, US 6327 3635 1320 82 SHAW, CA 22773 3342 3030 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3204 3858 436 GOOGLE-CLOUD-PLATFORM, US 16625 2918 1232 2174 AKAMAI-AS, US 4155 2910 227 1732 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 7568 1711 153 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3912 3395 123 AKAMAI-ASN1, NL 9009 3855 365 2172 M247, RO 12389 3111 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2404 361 584 TELLCOM-AS, TR 212238 2313 163 1682 CDNEXT, GB 13188 1605 100 37 TRIOLAN, UA 8452 1580 1852 14 TE-AS TE-AS, EG 203020 1519 190 667 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 12326 3272 578 UNINET, MX 10620 3475 472 1052 Telmex Colombia S.A., CO 13999 2528 511 354 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1372 2435 262 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 1070 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1062 67 368 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1017 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 1484 94 32 ORANGE-COTE-IVOIRE, CI 36992 1417 1494 373 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1237 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 972 520 43 Vodafone-, EG 20011 568 154 212 INTERNET-SOLUTIONS, ZA 36914 568 82 3 KENET-AS, KE 15399 533 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 13775 41062 5302 AMAZON-02, US 9808 12609 8762 116 CHINAMOBILE-CN China Mobile Communication 8151 12326 3272 578 UNINET, MX 12479 7568 1711 153 UNI2-AS, ES 7545 6139 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4830 320 609 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4591 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4463 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3942 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 12609 12493 CHINAMOBILE-CN China Mobile Communications Grou 8151 12326 11748 UNINET, MX 12479 7568 7415 UNI2-AS, ES 7545 6139 5516 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4591 4564 FPT-AS-AP FPT Telecom Company, VN 11492 4830 4221 CABLEONE, US 9498 4463 4152 BBIL-AP BHARTI Airtel Ltd., IN 7552 3942 3915 VIETEL-AS-AP Viettel Group, VN 20940 3912 3789 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 23.143.140.0/24 Origin: 7029 WINDSTREAM, US 23.143.140.0/24 Transit: 6453 AS6453, 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 /16:13764 /17:8166 /18:13432 /19:24434 /20:43869 /21:51604 /22:111800 /23:102657 /24:617714 /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 6544 12326 UNINET, MX 12479 6529 7568 UNI2-AS, ES 11492 3622 4830 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3432 3635 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2493 3342 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2347 13775 AMAZON-02, US 30036 2297 2639 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2195 3475 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) ---------------------------------------------- 1:2424 2:1488 3:875 4:10 5:4757 6:156 7:6 8:1542 9:2 11:172 12:1336 13:468 14:2582 15:370 16:286 17:377 18:898 20:562 21:4 22:188 23:7738 24:2656 25:2 27:2787 29:19 31:3368 32:35 33:1 34:83 35:260 36:4223 37:4570 38:9518 39:965 40:250 41:4281 42:2057 43:2731 44:378 45:18677 46:5077 47:338 49:1879 50:2042 51:588 52:1553 54:324 55:1106 56:11 57:270 58:2219 59:1294 60:1185 61:2913 62:3008 63:1779 64:5558 65:2148 66:4741 67:3094 68:1069 69:3883 70:1041 71:624 72:2856 74:2803 75:1505 76:606 77:2789 78:1897 79:1710 80:2205 81:2064 82:3212 83:1434 84:1918 85:3458 86:1095 87:2135 88:1311 89:4425 90:774 91:8402 92:2749 93:2952 94:4081 95:4411 96:1448 97:310 98:955 99:702 100:71 101:1467 102:3895 103:32855 104:5276 105:761 106:875 107:2654 108:1259 109:4185 110:2238 111:3515 112:2416 113:1856 114:1974 115:2190 116:2084 117:2681 118:2960 119:1921 120:2183 121:1323 122:2792 123:2235 124:1705 125:2898 126:91 128:1577 129:964 130:1291 131:2049 132:780 133:450 134:1595 135:353 136:1468 137:1129 138:2815 139:1600 140:1620 141:1533 142:1926 143:1953 144:1184 145:574 146:2173 147:2101 148:2718 149:2948 150:1294 151:2303 152:2091 153:525 154:7573 155:1866 156:3062 157:1946 158:1372 159:2523 160:3597 161:1901 162:3879 163:2255 164:1881 165:2455 166:1534 167:2020 168:3869 169:777 170:5186 171:999 172:4229 173:3418 174:919 175:1326 176:3737 177:4735 178:3979 179:2312 180:2725 181:4151 182:3576 183:2361 184:2063 185:21578 186:5240 187:4646 188:4271 189:4358 190:9520 191:1511 192:11333 193:9473 194:7778 195:5594 196:3263 197:3183 198:6096 199:8608 200:8086 201:6400 202:10382 203:10646 204:4583 205:3630 206:4469 207:3516 208:4271 209:5139 210:4648 211:2643 212:4561 213:3819 214:1029 215:50 216:6781 217:3250 218:1420 219:398 220:2148 221:1206 222:741 223:2793 End of report