IPv4 R&E Routing Table Report 23:05 GMT Thu 21 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: 993489 Prefixes after maximum aggregation (per Origin AS): 385954 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 491513 Number of IPv4 prefixes with a valid ROA: 563865 Number of IPv4 prefixes with an invalid ROA: 646 Number of IPv4 prefixes with no ROA: 428978 Total ASes present in the Internet Routing Table: 77146 Prefixes per ASN: 12.88 Origin-only ASes present in the Internet Routing Table: 66103 Origin ASes announcing only one prefix: 27010 Transit ASes present in the Internet Routing Table: 11043 Transit-only ASes present in the Internet Routing Table: 547 Paths with bogon ASNs present in the IPv4 Routing Table: 31 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) 54 Prefixes from unregistered ASNs in the Routing Table: 1107 Number of instances of unregistered ASNs: 1148 Number of 32-bit ASNs allocated by the RIRs: 47236 Number of 32-bit ASNs visible in the Routing Table: 38810 Prefixes from 32-bit ASNs in the Routing Table: 208506 Number of bogon 32-bit ASNs visible in the Routing Table: 96 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 428 Number of addresses announced to Internet: 3106425088 Equivalent to 185 /8s, 40 /16s and 73 /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: 323481 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265729 Total APNIC prefixes after maximum aggregation: 78524 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256445 Unique aggregates announced from the APNIC address blocks: 105258 APNIC Region origin ASes present in the Internet Routing Table: 14749 APNIC Prefixes per ASN: 17.39 APNIC Region origin ASes announcing only one prefix: 4497 APNIC Region transit ASes present in the Internet Routing Table: 1994 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: 10304 Number of APNIC addresses announced to Internet: 749780736 Equivalent to 44 /8s, 176 /16s and 191 /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: 290490 Total ARIN prefixes after maximum aggregation: 132727 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 292240 Unique aggregates announced from the ARIN address blocks: 142026 ARIN Region origin ASes present in the Internet Routing Table: 19243 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7056 ARIN Region transit ASes present in the Internet Routing Table: 1921 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: 5292 Number of ARIN addresses announced to Internet: 1348824576 Equivalent to 80 /8s, 101 /16s and 110 /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: 277346 Total RIPE prefixes after maximum aggregation: 136990 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 276553 Unique aggregates announced from the RIPE address blocks: 179102 RIPE Region origin ASes present in the Internet Routing Table: 29026 RIPE Prefixes per ASN: 9.53 RIPE Region origin ASes announcing only one prefix: 12096 RIPE Region transit ASes present in the Internet Routing Table: 4008 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: 12653 Number of RIPE addresses announced to Internet: 732311040 Equivalent to 43 /8s, 166 /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: 124063 Total LACNIC prefixes after maximum aggregation: 30211 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120348 Unique aggregates announced from the LACNIC address blocks: 49354 LACNIC Region origin ASes present in the Internet Routing Table: 11280 LACNIC Prefixes per ASN: 10.67 LACNIC Region origin ASes announcing only one prefix: 2650 LACNIC Region transit ASes present in the Internet Routing Table: 2550 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9245 Number of LACNIC addresses announced to Internet: 170777344 Equivalent to 10 /8s, 45 /16s and 219 /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: 34754 Total AfriNIC prefixes after maximum aggregation: 6777 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 47475 Unique aggregates announced from the AfriNIC address blocks: 15398 AfriNIC Region origin ASes present in the Internet Routing Table: 1951 AfriNIC Prefixes per ASN: 24.33 AfriNIC Region origin ASes announcing only one prefix: 711 AfriNIC Region transit ASes present in the Internet Routing Table: 375 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 89 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1316 Number of AfriNIC addresses announced to Internet: 104490752 Equivalent to 6 /8s, 58 /16s and 103 /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 12898 8761 115 CHINAMOBILE-CN China Mobile Communication 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4597 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3940 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3687 1044 68 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3301 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2971 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2919 865 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2176 427 182 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 13990 40849 5376 AMAZON-02, US 11492 4742 314 779 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3648 1320 82 SHAW, CA 22773 3324 3030 161 ASN-CXA-ALL-CCI-22773-RDC, US 174 3306 8759 845 COGENT-174, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3218 3857 436 GOOGLE-CLOUD-PLATFORM, US 4155 2944 229 1758 USDA-1, US 16625 2897 1223 2162 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 7539 1711 150 UNI2-AS, ES 39891 4780 291 66 ALJAWWALSTC-AS, SA 20940 3879 3395 125 AKAMAI-ASN1, NL 9009 3871 366 2185 M247, RO 12389 3112 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2404 361 585 TELLCOM-AS, TR 212238 2330 165 1698 CDNEXT, GB 203020 1780 218 810 HOSTROYALE, IN 13188 1606 100 34 TRIOLAN, UA 8452 1601 1852 14 TE-AS TE-AS, EG 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 12276 3270 570 UNINET, MX 10620 3482 472 1053 Telmex Colombia S.A., CO 13999 2530 511 349 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1370 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1184 371 22 Telefonica del Peru S.A.A., PE 11664 1087 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1055 67 375 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 1499 94 32 ORANGE-COTE-IVOIRE, CI 36992 1420 1495 374 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1241 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 923 523 46 Vodafone-, EG 36914 577 82 3 KENET-AS, KE 20011 576 154 212 INTERNET-SOLUTIONS, ZA 15399 546 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 13990 40849 5376 AMAZON-02, US 9808 12898 8761 115 CHINAMOBILE-CN China Mobile Communication 8151 12276 3270 570 UNINET, MX 12479 7539 1711 150 UNI2-AS, ES 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4780 291 66 ALJAWWALSTC-AS, SA 11492 4742 314 779 CABLEONE, US 18403 4597 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3940 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 12898 12783 CHINAMOBILE-CN China Mobile Communications Grou 8151 12276 11706 UNINET, MX 12479 7539 7389 UNI2-AS, ES 7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4780 4714 ALJAWWALSTC-AS, SA 18403 4597 4570 FPT-AS-AP FPT Telecom Company, VN 9498 4464 4153 BBIL-AP BHARTI Airtel Ltd., IN 11492 4742 3963 CABLEONE, US 7552 3940 3913 VIETEL-AS-AP Viettel Group, VN 7155 3859 3774 VIASAT-SP-BACKBONE, US 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 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 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /13:576 /14:1198 /15:2125 /16:13737 /17:8146 /18:13403 /19:24443 /20:43855 /21:51640 /22:111844 /23:102730 /24:619331 /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 6500 7539 UNI2-AS, ES 8151 6485 12276 UNINET, MX 11492 3555 4742 CABLEONE, US 39891 3489 4780 ALJAWWALSTC-AS, SA 6327 3445 3648 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2481 3324 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2384 13990 AMAZON-02, US 30036 2311 2654 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2202 3482 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) ---------------------------------------------- 1:2422 2:1501 3:921 4:10 5:4804 6:158 7:6 8:1544 9:3 11:172 12:1256 13:481 14:2589 15:381 16:285 17:380 18:901 20:564 21:4 22:188 23:7758 24:2654 25:2 27:2817 29:19 31:3372 32:29 33:1 34:84 35:262 36:4303 37:4559 38:9244 39:984 40:262 41:4290 42:2068 43:2748 44:379 45:18821 46:5102 47:338 49:1977 50:2036 51:591 52:1560 54:333 55:1103 56:11 57:284 58:2278 59:1294 60:1178 61:2897 62:3017 63:1776 64:5587 65:2140 66:4788 67:3088 68:1069 69:3889 70:1039 71:628 72:2850 74:2803 75:1505 76:602 77:2774 78:1892 79:1738 80:2226 81:2077 82:3244 83:1446 84:1913 85:3471 86:1125 87:2134 88:1317 89:4470 90:775 91:8413 92:2758 93:2974 94:4144 95:4426 96:1444 97:310 98:953 99:711 100:71 101:1473 102:3901 103:32866 104:5279 105:768 106:875 107:2644 108:1261 109:4192 110:2248 111:3582 112:2467 113:1856 114:1980 115:2190 116:2092 117:2695 118:3037 119:1942 120:2200 121:1324 122:2808 123:2225 124:1708 125:2910 126:91 128:1589 129:957 130:1287 131:2053 132:774 133:460 134:1628 135:357 136:1472 137:1121 138:2836 139:1601 140:1615 141:1538 142:1915 143:1986 144:1215 145:586 146:2176 147:2103 148:2712 149:3011 150:1267 151:2366 152:2107 153:567 154:7195 155:1910 156:3227 157:1969 158:1387 159:2536 160:3595 161:1921 162:3894 163:2273 164:1883 165:2484 166:1545 167:2059 168:3870 169:764 170:5235 171:997 172:4240 173:3410 174:904 175:1326 176:3782 177:4740 178:3986 179:2320 180:2733 181:4179 182:3607 183:2382 184:2048 185:21612 186:5332 187:4573 188:4303 189:4334 190:9423 191:1547 192:11321 193:9462 194:7794 195:5632 196:3281 197:3229 198:6099 199:8626 200:8078 201:6364 202:10394 203:10626 204:4566 205:3589 206:4480 207:3509 208:4273 209:5118 210:4664 211:2651 212:4599 213:3821 214:1039 215:51 216:6776 217:3300 218:1435 219:398 220:2144 221:1210 222:741 223:2828 End of report