IPv4 R&E Routing Table Report 23:05 GMT Wed 28 May, 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: 982370 Prefixes after maximum aggregation (per Origin AS): 379149 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 481964 Number of IPv4 prefixes with a valid ROA: 546966 Number of IPv4 prefixes with an invalid ROA: 718 Number of IPv4 prefixes with no ROA: 434686 Total ASes present in the Internet Routing Table: 76757 Prefixes per ASN: 12.80 Origin-only ASes present in the Internet Routing Table: 65787 Origin ASes announcing only one prefix: 26915 Transit ASes present in the Internet Routing Table: 10970 Transit-only ASes present in the Internet Routing Table: 538 Paths with bogon ASNs present in the IPv4 Routing Table: 27 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 79 Max AS path prepend of ASN ( 37447) 75 Prefixes from unregistered ASNs in the Routing Table: 1072 Number of instances of unregistered ASNs: 1083 Number of 32-bit ASNs allocated by the RIRs: 46523 Number of 32-bit ASNs visible in the Routing Table: 38254 Prefixes from 32-bit ASNs in the Routing Table: 204019 Number of bogon 32-bit ASNs visible in the Routing Table: 32 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 456 Number of addresses announced to Internet: 3109600256 Equivalent to 185 /8s, 88 /16s and 188 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 320829 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 258506 Total APNIC prefixes after maximum aggregation: 77129 APNIC Deaggregation factor: 3.35 Prefixes being announced from the APNIC address blocks: 249590 Unique aggregates announced from the APNIC address blocks: 104266 APNIC Region origin ASes present in the Internet Routing Table: 14559 APNIC Prefixes per ASN: 17.14 APNIC Region origin ASes announcing only one prefix: 4408 APNIC Region transit ASes present in the Internet Routing Table: 1959 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 32 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10106 Number of APNIC addresses announced to Internet: 748726528 Equivalent to 44 /8s, 160 /16s and 169 /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: 289639 Total ARIN prefixes after maximum aggregation: 130836 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 290299 Unique aggregates announced from the ARIN address blocks: 139575 ARIN Region origin ASes present in the Internet Routing Table: 19206 ARIN Prefixes per ASN: 15.12 ARIN Region origin ASes announcing only one prefix: 7048 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: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5212 Number of ARIN addresses announced to Internet: 1352332032 Equivalent to 80 /8s, 154 /16s and 243 /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: 273781 Total RIPE prefixes after maximum aggregation: 134306 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 272067 Unique aggregates announced from the RIPE address blocks: 175040 RIPE Region origin ASes present in the Internet Routing Table: 28922 RIPE Prefixes per ASN: 9.41 RIPE Region origin ASes announcing only one prefix: 12088 RIPE Region transit ASes present in the Internet Routing Table: 3973 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 73 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12452 Number of RIPE addresses announced to Internet: 731453440 Equivalent to 43 /8s, 153 /16s and 24 /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: 123857 Total LACNIC prefixes after maximum aggregation: 29530 LACNIC Deaggregation factor: 4.19 Prefixes being announced from the LACNIC address blocks: 120238 Unique aggregates announced from the LACNIC address blocks: 48968 LACNIC Region origin ASes present in the Internet Routing Table: 11254 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2684 LACNIC Region transit ASes present in the Internet Routing Table: 2536 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 74 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9207 Number of LACNIC addresses announced to Internet: 171841280 Equivalent to 10 /8s, 62 /16s and 23 /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: 35515 Total AfriNIC prefixes after maximum aggregation: 6691 AfriNIC Deaggregation factor: 5.31 Prefixes being announced from the AfriNIC address blocks: 49720 Unique aggregates announced from the AfriNIC address blocks: 13709 AfriNIC Region origin ASes present in the Internet Routing Table: 1909 AfriNIC Prefixes per ASN: 26.05 AfriNIC Region origin ASes announcing only one prefix: 687 AfriNIC Region transit ASes present in the Internet Routing Table: 380 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 79 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1277 Number of AfriNIC addresses announced to Internet: 105036800 Equivalent to 6 /8s, 66 /16s and 188 /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 11049 8756 97 CHINAMOBILE-CN China Mobile Communication 7545 6177 844 649 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4362 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4359 533 299 BBIL-AP BHARTI Airtel Ltd., IN 7552 3923 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3694 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3274 1869 103 VNPT-AS-VN VNPT Corp, VN 24560 2873 853 528 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 45090 2208 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer 4755 2176 434 193 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 13558 40827 5181 AMAZON-02, US 11492 4735 314 586 CABLEONE, US 7155 3864 286 85 VIASAT-SP-BACKBONE, US 6327 3631 1320 81 SHAW, CA 174 3439 8746 888 COGENT-174, US 22773 3345 3015 165 ASN-CXA-ALL-CCI-22773-RDC, US 749 3231 54784 2482 DNIC-AS-00749, US 396982 3172 3853 420 GOOGLE-CLOUD-PLATFORM, US 16625 3015 1253 2222 AKAMAI-AS, US 36352 2819 230 854 AS-COLOCROSSING, 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 7711 1714 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3958 3395 123 AKAMAI-ASN1, NL 9009 3911 356 2084 M247, RO 12389 3074 2306 889 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2391 360 580 TELLCOM-AS, TR 212238 2194 156 1623 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1569 1852 14 TE-AS TE-AS, EG 62240 1423 94 738 CLOUVIDER Clouvider - Global ASN, GB 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 12169 3254 584 UNINET, MX 10620 3500 480 1017 Telmex Colombia S.A., CO 13999 2511 540 365 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1357 2438 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1337 784 209 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1198 371 22 Telefonica del Peru S.A.A., PE 11664 1097 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1060 67 377 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1041 2503 52 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 1780 644 27 RAYA-AS, EG 24863 1653 389 17 LINKdotNET-AS, EG 29571 1609 102 33 ORANGE-COTE-IVOIRE, CI 36992 1431 1519 280 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 990 523 47 Vodafone-, EG 20011 980 185 285 INTERNET-SOLUTIONS, ZA 36914 554 82 3 KENET-AS, KE 15399 545 57 60 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 13558 40827 5181 AMAZON-02, US 8151 12169 3254 584 UNINET, MX 9808 11049 8756 97 CHINAMOBILE-CN China Mobile Communication 12479 7711 1714 148 UNI2-AS, ES 7545 6177 844 649 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4735 314 586 CABLEONE, US 18403 4362 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4359 533 299 BBIL-AP BHARTI Airtel Ltd., IN 20940 3958 3395 123 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 12169 11585 UNINET, MX 9808 11049 10952 CHINAMOBILE-CN China Mobile Communications Grou 12479 7711 7563 UNI2-AS, ES 7545 6177 5528 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4362 4337 FPT-AS-AP FPT Telecom Company, VN 11492 4735 4149 CABLEONE, US 9498 4359 4060 BBIL-AP BHARTI Airtel Ltd., IN 7552 3923 3897 VIETEL-AS-AP Viettel Group, VN 20940 3958 3835 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 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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 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: 3491 CONSOLE-CONNECT-ASN, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.152.48.0/24 Origin: 46167 RESERVED, ZZ 23.152.48.0/24 Transit: 7018 ATT-INTERNET4, 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 /9:16 /10:41 /11:92 /12:299 /13:580 /14:1211 /15:2140 /16:13861 /17:8209 /18:13604 /19:24472 /20:43842 /21:51410 /22:111492 /23:101914 /24:609171 /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 12479 6624 7711 UNI2-AS, ES 8151 6359 12169 UNINET, MX 11492 3532 4735 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3426 3631 SHAW, CA 7155 2823 3864 VIASAT-SP-BACKBONE, US 22773 2497 3345 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2381 13558 AMAZON-02, US 30036 2233 2574 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2186 3500 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) ---------------------------------------------- 1:2376 2:1501 3:794 4:9 5:4708 6:162 7:6 8:1576 9:1 11:172 12:1362 13:438 14:2523 15:355 16:285 17:376 18:920 20:542 21:4 22:188 23:7521 24:2748 25:2 27:2765 29:19 31:3272 32:36 33:1 34:83 35:212 36:2985 37:4621 38:9198 39:907 40:170 41:4238 42:1932 43:2618 44:377 45:18650 46:5061 47:301 49:1937 50:1883 51:590 52:1568 54:320 55:1097 56:11 57:260 58:2210 59:1302 60:1168 61:2829 62:2919 63:1796 64:5452 65:2178 66:4621 67:3054 68:1124 69:3840 70:1079 71:629 72:2830 74:2778 75:1507 76:615 77:2699 78:1888 79:1683 80:2204 81:2081 82:3093 83:1445 84:1856 85:3415 86:1068 87:2124 88:1286 89:4399 90:775 91:8357 92:2719 93:2905 94:4055 95:4328 96:1416 97:312 98:978 99:686 100:72 101:1410 102:3877 103:32637 104:5052 105:767 106:1035 107:2649 108:1244 109:4036 110:2255 111:3289 112:2112 113:1814 114:1980 115:2169 116:2059 117:2533 118:2859 119:1925 120:1952 121:1376 122:2761 123:2176 124:1625 125:2887 126:91 128:1586 129:955 130:1305 131:1969 132:776 133:451 134:1535 135:333 136:1351 137:1118 138:2894 139:1592 140:1591 141:1507 142:1902 143:1782 144:1135 145:511 146:2175 147:2109 148:2698 149:2893 150:1263 151:1930 152:2083 153:499 154:8001 155:1988 156:3274 157:1915 158:1326 159:2470 160:3842 161:1832 162:3756 163:2174 164:1728 165:2216 166:1489 167:1923 168:4303 169:784 170:5088 171:1008 172:4417 173:3301 174:912 175:1311 176:3695 177:4765 178:3634 179:2339 180:2747 181:4066 182:3406 183:2144 184:2056 185:21556 186:5152 187:4499 188:4245 189:4308 190:9551 191:1475 192:11269 193:9454 194:7781 195:5535 196:3260 197:3660 198:6070 199:8512 200:8003 201:6327 202:10280 203:10629 204:4533 205:3592 206:4455 207:3459 208:4229 209:5125 210:4537 211:2533 212:4552 213:3718 214:1025 215:48 216:6732 217:3117 218:1347 219:395 220:2090 221:1104 222:722 223:2413 End of report