IPv4 R&E Routing Table Report 23:05 GMT Tue 07 Oct, 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: 1004070 Prefixes after maximum aggregation (per Origin AS): 389912 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 496540 Number of IPv4 prefixes with a valid ROA: 575402 Number of IPv4 prefixes with an invalid ROA: 734 Number of IPv4 prefixes with no ROA: 427934 Total ASes present in the Internet Routing Table: 77297 Prefixes per ASN: 12.99 Origin-only ASes present in the Internet Routing Table: 66255 Origin ASes announcing only one prefix: 27052 Transit ASes present in the Internet Routing Table: 11042 Transit-only ASes present in the Internet Routing Table: 551 Paths with bogon ASNs present in the IPv4 Routing Table: 27 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 97 Max AS path prepend of ASN ( 37447) 53 Prefixes from unregistered ASNs in the Routing Table: 1022 Number of instances of unregistered ASNs: 1051 Number of 32-bit ASNs allocated by the RIRs: 47654 Number of 32-bit ASNs visible in the Routing Table: 39051 Prefixes from 32-bit ASNs in the Routing Table: 212037 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 432 Number of addresses announced to Internet: 3110916864 Equivalent to 185 /8s, 108 /16s and 211 /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: 327019 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269382 Total APNIC prefixes after maximum aggregation: 79611 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 259164 Unique aggregates announced from the APNIC address blocks: 105854 APNIC Region origin ASes present in the Internet Routing Table: 14783 APNIC Prefixes per ASN: 17.53 APNIC Region origin ASes announcing only one prefix: 4476 APNIC Region transit ASes present in the Internet Routing Table: 1987 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: 10358 Number of APNIC addresses announced to Internet: 751163392 Equivalent to 44 /8s, 197 /16s and 216 /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: 294237 Total ARIN prefixes after maximum aggregation: 134042 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 295686 Unique aggregates announced from the ARIN address blocks: 143518 ARIN Region origin ASes present in the Internet Routing Table: 19303 ARIN Prefixes per ASN: 15.32 ARIN Region origin ASes announcing only one prefix: 7091 ARIN Region transit ASes present in the Internet Routing Table: 1910 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5343 Number of ARIN addresses announced to Internet: 1352289792 Equivalent to 80 /8s, 154 /16s and 78 /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: 279603 Total RIPE prefixes after maximum aggregation: 138414 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279102 Unique aggregates announced from the RIPE address blocks: 180733 RIPE Region origin ASes present in the Internet Routing Table: 29054 RIPE Prefixes per ASN: 9.61 RIPE Region origin ASes announcing only one prefix: 12097 RIPE Region transit ASes present in the Internet Routing Table: 4039 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: 12742 Number of RIPE addresses announced to Internet: 732595968 Equivalent to 43 /8s, 170 /16s and 135 /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: 124801 Total LACNIC prefixes after maximum aggregation: 30316 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121005 Unique aggregates announced from the LACNIC address blocks: 49474 LACNIC Region origin ASes present in the Internet Routing Table: 11303 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2670 LACNIC Region transit ASes present in the Internet Routing Table: 2526 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9273 Number of LACNIC addresses announced to Internet: 170804992 Equivalent to 10 /8s, 46 /16s and 71 /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: 35025 Total AfriNIC prefixes after maximum aggregation: 6843 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 48681 Unique aggregates announced from the AfriNIC address blocks: 16579 AfriNIC Region origin ASes present in the Internet Routing Table: 1969 AfriNIC Prefixes per ASN: 24.72 AfriNIC Region origin ASes announcing only one prefix: 718 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: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1335 Number of AfriNIC addresses announced to Internet: 103826432 Equivalent to 6 /8s, 48 /16s and 68 /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 13670 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6183 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4572 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3948 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3725 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3302 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3120 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2927 863 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2426 509 1567 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 14310 40992 5385 AMAZON-02, US 11492 4752 320 794 CABLEONE, US 22773 4024 3070 361 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3682 1320 82 SHAW, CA 396982 3268 4823 463 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3100 240 1720 USDA-1, US 174 3036 8764 853 COGENT-174, US 16625 2906 1239 2171 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 7422 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3980 373 2240 M247, RO 20940 3921 3395 124 AKAMAI-ASN1, NL 12389 3125 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2478 176 1796 CDNEXT, GB 34984 2414 363 575 TELLCOM-AS, TR 203020 1903 203 908 HOSTROYALE, IN 8452 1653 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 12374 3281 577 UNINET, MX 10620 3505 474 1060 Telmex Colombia S.A., CO 13999 2543 511 346 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1217 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1179 371 23 Telefonica del Peru S.A.A., PE 22884 1065 68 345 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1008 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 1766 600 27 RAYA-AS, EG 36992 1508 1498 383 ETISALAT-MISR, EG 29571 1283 102 53 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1249 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 958 523 47 Vodafone-, EG 36914 567 82 3 KENET-AS, KE 20011 555 151 211 NTT-DATA-Inc, ZA 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 14310 40992 5385 AMAZON-02, US 9808 13670 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12374 3281 577 UNINET, MX 12479 7422 1711 149 UNI2-AS, ES 7545 6183 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4752 320 794 CABLEONE, US 18403 4572 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 312 BBIL-AP BHARTI Airtel Ltd., IN 22773 4024 3070 361 ASN-CXA-ALL-CCI-22773-RDC, US 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 13670 13554 CHINAMOBILE-CN China Mobile Communications Grou 8151 12374 11797 UNINET, MX 12479 7422 7273 UNI2-AS, ES 7545 6183 5580 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4572 4546 FPT-AS-AP FPT Telecom Company, VN 9498 4470 4158 BBIL-AP BHARTI Airtel Ltd., IN 11492 4752 3958 CABLEONE, US 7552 3948 3920 VIETEL-AS-AP Viettel Group, VN 20940 3921 3797 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 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, 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 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 /12:300 /13:579 /14:1197 /15:2121 /16:13751 /17:8143 /18:13413 /19:24527 /20:44222 /21:51725 /22:112304 /23:103595 /24:628029 /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 6599 12374 UNINET, MX 12479 6385 7422 UNI2-AS, ES 11492 3565 4752 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3470 3682 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2526 4024 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2396 14310 AMAZON-02, US 30036 2294 2634 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2218 3505 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) ---------------------------------------------- 1:2431 2:1522 3:945 4:10 5:4835 6:169 7:6 8:1528 9:6 11:172 12:1242 13:565 14:2644 15:402 16:304 17:386 18:905 20:574 21:4 22:188 23:7875 24:2648 25:2 27:2789 29:19 31:3354 32:31 33:1 34:84 35:267 36:4462 37:4546 38:9517 39:1089 40:468 41:4357 42:2041 43:2773 44:390 45:19049 46:5180 47:343 49:2032 50:2047 51:593 52:1593 54:359 55:1094 56:11 57:281 58:2302 59:1315 60:1188 61:2952 62:3085 63:1759 64:5656 65:2138 66:4977 67:3116 68:1102 69:3927 70:1052 71:632 72:2983 74:2824 75:1494 76:599 77:2775 78:1895 79:1752 80:2247 81:2109 82:3450 83:1465 84:1980 85:3504 86:1098 87:2120 88:1314 89:4498 90:808 91:8378 92:2787 93:2981 94:4156 95:4477 96:1472 97:312 98:952 99:738 100:71 101:1478 102:4143 103:32839 104:5450 105:777 106:895 107:2663 108:1205 109:4222 110:2257 111:3766 112:2652 113:1863 114:1983 115:2300 116:2095 117:2941 118:3052 119:2006 120:2260 121:1349 122:2804 123:2252 124:1706 125:2910 126:125 128:1567 129:957 130:1281 131:2138 132:782 133:462 134:1605 135:365 136:1488 137:1122 138:2811 139:1602 140:1627 141:1543 142:2039 143:2057 144:1264 145:626 146:2176 147:2128 148:2747 149:2918 150:1286 151:2576 152:2170 153:574 154:7508 155:2063 156:3484 157:2011 158:1433 159:2595 160:3569 161:1992 162:3949 163:2224 164:1942 165:2556 166:1565 167:2095 168:3824 169:773 170:5363 171:1025 172:4449 173:3405 174:909 175:1358 176:3810 177:4770 178:4264 179:2284 180:2762 181:4238 182:3724 183:2551 184:2056 185:21615 186:5371 187:4704 188:4323 189:4376 190:9707 191:1538 192:11370 193:9458 194:7797 195:5571 196:3248 197:3325 198:6069 199:8764 200:8084 201:6348 202:10440 203:10572 204:4582 205:3613 206:4392 207:3563 208:4287 209:5302 210:4712 211:2684 212:4796 213:3870 214:1041 215:52 216:6918 217:3344 218:1565 219:396 220:2189 221:1234 222:750 223:3031 End of report