IPv4 R&E Routing Table Report 23:05 GMT Sat 27 Sep, 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: 1002834 Prefixes after maximum aggregation (per Origin AS): 389009 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495843 Number of IPv4 prefixes with a valid ROA: 572943 Number of IPv4 prefixes with an invalid ROA: 1057 Number of IPv4 prefixes with no ROA: 428834 Total ASes present in the Internet Routing Table: 77293 Prefixes per ASN: 12.97 Origin-only ASes present in the Internet Routing Table: 66248 Origin ASes announcing only one prefix: 27047 Transit ASes present in the Internet Routing Table: 11045 Transit-only ASes present in the Internet Routing Table: 547 Paths with bogon ASNs present in the IPv4 Routing Table: 29 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 58 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1042 Number of instances of unregistered ASNs: 1072 Number of 32-bit ASNs allocated by the RIRs: 47563 Number of 32-bit ASNs visible in the Routing Table: 39013 Prefixes from 32-bit ASNs in the Routing Table: 211548 Number of bogon 32-bit ASNs visible in the Routing Table: 76 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 428 Number of addresses announced to Internet: 3111622656 Equivalent to 185 /8s, 119 /16s and 152 /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: 326580 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269413 Total APNIC prefixes after maximum aggregation: 79430 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 259398 Unique aggregates announced from the APNIC address blocks: 105873 APNIC Region origin ASes present in the Internet Routing Table: 14777 APNIC Prefixes per ASN: 17.55 APNIC Region origin ASes announcing only one prefix: 4463 APNIC Region transit ASes present in the Internet Routing Table: 1986 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10348 Number of APNIC addresses announced to Internet: 751248128 Equivalent to 44 /8s, 199 /16s and 35 /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: 293407 Total ARIN prefixes after maximum aggregation: 133608 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 294753 Unique aggregates announced from the ARIN address blocks: 142944 ARIN Region origin ASes present in the Internet Routing Table: 19298 ARIN Prefixes per ASN: 15.27 ARIN Region origin ASes announcing only one prefix: 7095 ARIN Region transit ASes present in the Internet Routing Table: 1930 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 49 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5344 Number of ARIN addresses announced to Internet: 1352513792 Equivalent to 80 /8s, 157 /16s and 185 /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: 279178 Total RIPE prefixes after maximum aggregation: 138200 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278699 Unique aggregates announced from the RIPE address blocks: 180533 RIPE Region origin ASes present in the Internet Routing Table: 29067 RIPE Prefixes per ASN: 9.59 RIPE Region origin ASes announcing only one prefix: 12100 RIPE Region transit ASes present in the Internet Routing Table: 4016 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: 12729 Number of RIPE addresses announced to Internet: 732946944 Equivalent to 43 /8s, 175 /16s and 226 /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: 124610 Total LACNIC prefixes after maximum aggregation: 30234 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120852 Unique aggregates announced from the LACNIC address blocks: 49427 LACNIC Region origin ASes present in the Internet Routing Table: 11293 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2669 LACNIC Region transit ASes present in the Internet Routing Table: 2520 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9260 Number of LACNIC addresses announced to Internet: 170710784 Equivalent to 10 /8s, 44 /16s and 215 /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: 35184 Total AfriNIC prefixes after maximum aggregation: 6840 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 48704 Unique aggregates announced from the AfriNIC address blocks: 16689 AfriNIC Region origin ASes present in the Internet Routing Table: 1969 AfriNIC Prefixes per ASN: 24.74 AfriNIC Region origin ASes announcing only one prefix: 720 AfriNIC Region transit ASes present in the Internet Routing Table: 386 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1332 Number of AfriNIC addresses announced to Internet: 103969536 Equivalent to 6 /8s, 50 /16s and 115 /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 13674 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6162 835 602 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4480 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3951 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3742 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3302 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3121 828 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2926 862 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2258 496 1434 HUTCHISON-AS-AP HGC Global Communications 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 14362 40906 5413 AMAZON-02, US 11492 4746 320 804 CABLEONE, US 22773 3951 3045 315 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3677 1320 81 SHAW, CA 396982 3271 4824 460 GOOGLE-CLOUD-PLATFORM, US 174 3246 8770 872 COGENT-174, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3065 237 1699 USDA-1, US 16625 2909 1240 2174 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 7450 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 9009 3957 370 2212 M247, RO 20940 3908 3395 124 AKAMAI-ASN1, NL 12389 3121 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2445 174 1769 CDNEXT, GB 34984 2411 363 572 TELLCOM-AS, TR 203020 1867 198 870 HOSTROYALE, IN 8452 1620 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 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 12363 3278 573 UNINET, MX 10620 3503 474 1047 Telmex Colombia S.A., CO 13999 2542 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1368 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1231 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1178 371 23 Telefonica del Peru S.A.A., PE 22884 1058 67 366 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 2486 56 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 1846 652 28 RAYA-AS, EG 36992 1509 1498 384 ETISALAT-MISR, EG 29571 1280 102 53 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1246 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 1077 522 45 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 568 82 3 KENET-AS, KE 15399 550 56 54 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 14362 40906 5413 AMAZON-02, US 9808 13674 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12363 3278 573 UNINET, MX 12479 7450 1711 149 UNI2-AS, ES 7545 6162 835 602 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4746 320 804 CABLEONE, US 18403 4480 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 311 BBIL-AP BHARTI Airtel Ltd., IN 9009 3957 370 2212 M247, RO 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 13674 13558 CHINAMOBILE-CN China Mobile Communications Grou 8151 12363 11790 UNINET, MX 12479 7450 7301 UNI2-AS, ES 7545 6162 5560 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4480 4454 FPT-AS-AP FPT Telecom Company, VN 9498 4470 4159 BBIL-AP BHARTI Airtel Ltd., IN 11492 4746 3942 CABLEONE, US 7552 3951 3923 VIETEL-AS-AP Viettel Group, VN 20940 3908 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 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 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 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /11:93 /12:301 /13:579 /14:1198 /15:2123 /16:13742 /17:8147 /18:13380 /19:24501 /20:44203 /21:51810 /22:112337 /23:103464 /24:626885 /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 6582 12363 UNINET, MX 12479 6423 7450 UNI2-AS, ES 11492 3560 4746 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3677 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2511 3951 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2444 14362 AMAZON-02, US 30036 2295 2637 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2221 3503 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) ---------------------------------------------- 1:2427 2:1527 3:943 4:10 5:4851 6:170 7:6 8:1533 9:6 11:172 12:1245 13:553 14:2634 15:401 16:303 17:388 18:907 20:573 21:4 22:188 23:7848 24:2652 25:2 27:2805 29:19 31:3351 32:31 33:1 34:84 35:272 36:4456 37:4531 38:9513 39:1091 40:297 41:4347 42:1979 43:2770 44:376 45:18977 46:5135 47:345 49:2023 50:2039 51:594 52:1605 54:362 55:1039 56:11 57:283 58:2279 59:1307 60:1188 61:2954 62:3058 63:1760 64:5629 65:2138 66:4906 67:3095 68:1092 69:3915 70:1041 71:631 72:2926 74:2819 75:1497 76:602 77:2771 78:1898 79:1758 80:2235 81:2101 82:3430 83:1467 84:1976 85:3507 86:1094 87:2125 88:1324 89:4499 90:813 91:8400 92:2784 93:2979 94:4186 95:4455 96:1472 97:312 98:953 99:764 100:71 101:1474 102:4134 103:32930 104:5361 105:777 106:880 107:2655 108:1208 109:4220 110:2255 111:3774 112:2651 113:1865 114:1993 115:2278 116:2098 117:2938 118:3056 119:1965 120:2263 121:1345 122:2817 123:2249 124:1712 125:2925 126:90 128:1568 129:959 130:1282 131:2132 132:782 133:461 134:1603 135:365 136:1493 137:1127 138:2795 139:1607 140:1638 141:1556 142:1907 143:2024 144:1275 145:626 146:2170 147:2118 148:2728 149:2911 150:1276 151:2539 152:2169 153:576 154:7509 155:2050 156:3492 157:2001 158:1415 159:2584 160:3561 161:1978 162:3929 163:2294 164:1926 165:2585 166:1558 167:2094 168:3810 169:775 170:5354 171:1010 172:4247 173:3409 174:904 175:1351 176:3806 177:4722 178:4226 179:2269 180:2761 181:4242 182:3730 183:2639 184:2053 185:21649 186:5386 187:4662 188:4282 189:4373 190:9685 191:1555 192:11375 193:9460 194:7784 195:5575 196:3275 197:3354 198:6095 199:8726 200:8091 201:6360 202:10444 203:10671 204:4571 205:3590 206:4504 207:3543 208:4288 209:5288 210:4707 211:2683 212:4763 213:3880 214:1035 215:52 216:6917 217:3329 218:1564 219:396 220:2190 221:1234 222:750 223:3025 End of report