IPv4 R&E Routing Table Report 23:05 GMT Fri 08 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: 991617 Prefixes after maximum aggregation (per Origin AS): 384433 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 488860 Number of IPv4 prefixes with a valid ROA: 553523 Number of IPv4 prefixes with an invalid ROA: 936 Number of IPv4 prefixes with no ROA: 437158 Total ASes present in the Internet Routing Table: 77061 Prefixes per ASN: 12.87 Origin-only ASes present in the Internet Routing Table: 65990 Origin ASes announcing only one prefix: 26964 Transit ASes present in the Internet Routing Table: 11071 Transit-only ASes present in the Internet Routing Table: 552 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: 1138 Number of instances of unregistered ASNs: 1170 Number of 32-bit ASNs allocated by the RIRs: 47085 Number of 32-bit ASNs visible in the Routing Table: 38717 Prefixes from 32-bit ASNs in the Routing Table: 207138 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: 3107295232 Equivalent to 185 /8s, 53 /16s and 144 /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: 323008 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 264515 Total APNIC prefixes after maximum aggregation: 78150 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 255431 Unique aggregates announced from the APNIC address blocks: 104897 APNIC Region origin ASes present in the Internet Routing Table: 14714 APNIC Prefixes per ASN: 17.36 APNIC Region origin ASes announcing only one prefix: 4470 APNIC Region transit ASes present in the Internet Routing Table: 2007 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: 10273 Number of APNIC addresses announced to Internet: 749429248 Equivalent to 44 /8s, 171 /16s and 98 /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: 290718 Total ARIN prefixes after maximum aggregation: 132253 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 292247 Unique aggregates announced from the ARIN address blocks: 141795 ARIN Region origin ASes present in the Internet Routing Table: 19226 ARIN Prefixes per ASN: 15.20 ARIN Region origin ASes announcing only one prefix: 7043 ARIN Region transit ASes present in the Internet Routing Table: 1931 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: 5274 Number of ARIN addresses announced to Internet: 1349281024 Equivalent to 80 /8s, 108 /16s and 101 /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: 276632 Total RIPE prefixes after maximum aggregation: 136589 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 275673 Unique aggregates announced from the RIPE address blocks: 178660 RIPE Region origin ASes present in the Internet Routing Table: 28992 RIPE Prefixes per ASN: 9.51 RIPE Region origin ASes announcing only one prefix: 12080 RIPE Region transit ASes present in the Internet Routing Table: 4019 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: 12622 Number of RIPE addresses announced to Internet: 732063488 Equivalent to 43 /8s, 162 /16s and 103 /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: 123971 Total LACNIC prefixes after maximum aggregation: 29921 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 120294 Unique aggregates announced from the LACNIC address blocks: 49019 LACNIC Region origin ASes present in the Internet Routing Table: 11275 LACNIC Prefixes per ASN: 10.67 LACNIC Region origin ASes announcing only one prefix: 2663 LACNIC Region transit ASes present in the Internet Routing Table: 2532 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: 171157248 Equivalent to 10 /8s, 51 /16s and 167 /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: 34643 Total AfriNIC prefixes after maximum aggregation: 6783 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 47543 Unique aggregates announced from the AfriNIC address blocks: 14111 AfriNIC Region origin ASes present in the Internet Routing Table: 1946 AfriNIC Prefixes per ASN: 24.43 AfriNIC Region origin ASes announcing only one prefix: 708 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: 1310 Number of AfriNIC addresses announced to Internet: 105122560 Equivalent to 6 /8s, 68 /16s and 11 /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 12613 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6140 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4575 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3942 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3690 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3297 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2968 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2918 864 504 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 13770 41093 5299 AMAZON-02, US 11492 4783 317 680 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3643 1320 82 SHAW, CA 174 3627 8769 848 COGENT-174, US 22773 3338 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 2917 1231 2173 AKAMAI-AS, US 4155 2907 227 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 7568 1711 153 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3907 3395 123 AKAMAI-ASN1, NL 9009 3860 366 2177 M247, RO 12389 3111 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2404 361 584 TELLCOM-AS, TR 212238 2327 164 1692 CDNEXT, GB 13188 1605 100 37 TRIOLAN, UA 8452 1580 1852 14 TE-AS TE-AS, EG 203020 1521 191 669 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 12325 3272 577 UNINET, MX 10620 3474 472 1051 Telmex Colombia S.A., CO 13999 2529 511 354 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 1182 371 22 Telefonica del Peru S.A.A., PE 11664 1070 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1063 68 369 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 1488 94 32 ORANGE-COTE-IVOIRE, CI 36992 1416 1494 373 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1240 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 566 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 13770 41093 5299 AMAZON-02, US 9808 12613 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12325 3272 577 UNINET, MX 12479 7568 1711 153 UNI2-AS, ES 7545 6140 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4783 317 680 CABLEONE, US 18403 4575 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 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 12613 12498 CHINAMOBILE-CN China Mobile Communications Grou 8151 12325 11748 UNINET, MX 12479 7568 7415 UNI2-AS, ES 7545 6140 5517 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4575 4548 FPT-AS-AP FPT Telecom Company, VN 9498 4464 4153 BBIL-AP BHARTI Airtel Ltd., IN 11492 4783 4103 CABLEONE, US 7552 3942 3915 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 23.143.140.0/24 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 /17:8165 /18:13429 /19:24434 /20:43851 /21:51605 /22:111810 /23:102686 /24:617507 /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 12325 UNINET, MX 12479 6529 7568 UNI2-AS, ES 11492 3593 4783 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3440 3643 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2489 3338 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2340 13770 AMAZON-02, US 30036 2296 2638 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2194 3474 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) ---------------------------------------------- 1:2421 2:1496 3:872 4:10 5:4757 6:157 7:6 8:1543 9:2 11:172 12:1336 13:471 14:2582 15:368 16:286 17:379 18:899 20:563 21:4 22:188 23:7729 24:2653 25:2 27:2790 29:19 31:3370 32:35 33:1 34:83 35:260 36:4227 37:4571 38:9523 39:965 40:251 41:4265 42:2046 43:2732 44:378 45:18667 46:5092 47:338 49:1888 50:2043 51:588 52:1552 54:324 55:1108 56:11 57:271 58:2218 59:1293 60:1173 61:2915 62:3010 63:1779 64:5566 65:2143 66:4744 67:3093 68:1070 69:3880 70:1038 71:624 72:2855 74:2805 75:1504 76:606 77:2788 78:1897 79:1735 80:2204 81:2065 82:3218 83:1436 84:1917 85:3457 86:1109 87:2136 88:1310 89:4437 90:774 91:8415 92:2750 93:2955 94:4099 95:4423 96:1448 97:310 98:955 99:702 100:71 101:1464 102:3892 103:32827 104:5272 105:761 106:875 107:2654 108:1251 109:4191 110:2242 111:3514 112:2417 113:1857 114:1975 115:2190 116:2087 117:2681 118:2959 119:1918 120:2183 121:1323 122:2793 123:2234 124:1703 125:2905 126:91 128:1576 129:966 130:1292 131:2038 132:773 133:450 134:1586 135:355 136:1469 137:1129 138:2804 139:1596 140:1617 141:1530 142:1921 143:1951 144:1189 145:575 146:2172 147:2063 148:2704 149:2945 150:1292 151:2309 152:2058 153:526 154:7604 155:1863 156:3061 157:1944 158:1373 159:2523 160:3586 161:1899 162:3884 163:2250 164:1877 165:2457 166:1530 167:2020 168:3863 169:777 170:5181 171:998 172:4230 173:3401 174:911 175:1323 176:3734 177:4679 178:3967 179:2310 180:2726 181:4151 182:3576 183:2361 184:2059 185:21580 186:5213 187:4637 188:4275 189:4364 190:9517 191:1494 192:11324 193:9472 194:7780 195:5600 196:3277 197:3186 198:6084 199:8608 200:8065 201:6380 202:10378 203:10641 204:4584 205:3632 206:4505 207:3515 208:4274 209:5106 210:4645 211:2643 212:4579 213:3826 214:1027 215:50 216:6780 217:3273 218:1420 219:398 220:2149 221:1208 222:741 223:2793 End of report