IPv4 R&E Routing Table Report 23:05 GMT Wed 24 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: 1001484 Prefixes after maximum aggregation (per Origin AS): 388811 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495499 Number of IPv4 prefixes with a valid ROA: 571783 Number of IPv4 prefixes with an invalid ROA: 976 Number of IPv4 prefixes with no ROA: 428725 Total ASes present in the Internet Routing Table: 77270 Prefixes per ASN: 12.96 Origin-only ASes present in the Internet Routing Table: 66160 Origin ASes announcing only one prefix: 27053 Transit ASes present in the Internet Routing Table: 11110 Transit-only ASes present in the Internet Routing Table: 541 Paths with bogon ASNs present in the IPv4 Routing Table: 28 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: 1077 Number of instances of unregistered ASNs: 1107 Number of 32-bit ASNs allocated by the RIRs: 47538 Number of 32-bit ASNs visible in the Routing Table: 38992 Prefixes from 32-bit ASNs in the Routing Table: 211152 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 435 Number of addresses announced to Internet: 3111462912 Equivalent to 185 /8s, 117 /16s and 40 /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: 325850 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269005 Total APNIC prefixes after maximum aggregation: 79324 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 259141 Unique aggregates announced from the APNIC address blocks: 105798 APNIC Region origin ASes present in the Internet Routing Table: 14785 APNIC Prefixes per ASN: 17.53 APNIC Region origin ASes announcing only one prefix: 4474 APNIC Region transit ASes present in the Internet Routing Table: 1993 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: 10359 Number of APNIC addresses announced to Internet: 751117056 Equivalent to 44 /8s, 197 /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: 293039 Total ARIN prefixes after maximum aggregation: 133611 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 294431 Unique aggregates announced from the ARIN address blocks: 142815 ARIN Region origin ASes present in the Internet Routing Table: 19283 ARIN Prefixes per ASN: 15.27 ARIN Region origin ASes announcing only one prefix: 7078 ARIN Region transit ASes present in the Internet Routing Table: 1928 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 41 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5334 Number of ARIN addresses announced to Internet: 1352536320 Equivalent to 80 /8s, 158 /16s and 17 /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: 278829 Total RIPE prefixes after maximum aggregation: 138088 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278152 Unique aggregates announced from the RIPE address blocks: 180313 RIPE Region origin ASes present in the Internet Routing Table: 29061 RIPE Prefixes per ASN: 9.57 RIPE Region origin ASes announcing only one prefix: 12109 RIPE Region transit ASes present in the Internet Routing Table: 4063 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: 12717 Number of RIPE addresses announced to Internet: 732956672 Equivalent to 43 /8s, 176 /16s and 8 /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: 124440 Total LACNIC prefixes after maximum aggregation: 30249 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120690 Unique aggregates announced from the LACNIC address blocks: 49452 LACNIC Region origin ASes present in the Internet Routing Table: 11289 LACNIC Prefixes per ASN: 10.69 LACNIC Region origin ASes announcing only one prefix: 2674 LACNIC Region transit ASes present in the Internet Routing Table: 2535 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: 9252 Number of LACNIC addresses announced to Internet: 170704896 Equivalent to 10 /8s, 44 /16s and 192 /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: 35094 Total AfriNIC prefixes after maximum aggregation: 6832 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 48635 Unique aggregates announced from the AfriNIC address blocks: 16741 AfriNIC Region origin ASes present in the Internet Routing Table: 1963 AfriNIC Prefixes per ASN: 24.78 AfriNIC Region origin ASes announcing only one prefix: 718 AfriNIC Region transit ASes present in the Internet Routing Table: 382 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: 1330 Number of AfriNIC addresses announced to Internet: 103913472 Equivalent to 6 /8s, 49 /16s and 152 /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 13614 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6161 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4470 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4469 536 310 BBIL-AP BHARTI Airtel Ltd., IN 7552 3940 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3740 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3117 828 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2924 862 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2189 432 186 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 14355 40904 5397 AMAZON-02, US 11492 4746 320 804 CABLEONE, US 22773 3947 3045 314 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3678 1320 82 SHAW, CA 396982 3267 4824 459 GOOGLE-CLOUD-PLATFORM, US 174 3249 8770 873 COGENT-174, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3051 236 1703 USDA-1, US 16625 2913 1240 2175 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 7449 1711 149 UNI2-AS, ES 39891 4730 289 62 ALJAWWALSTC-AS, SA 9009 3948 370 2218 M247, RO 20940 3907 3395 124 AKAMAI-ASN1, NL 12389 3120 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2439 173 1763 CDNEXT, GB 34984 2415 363 573 TELLCOM-AS, TR 203020 1960 229 910 HOSTROYALE, IN 8452 1639 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 12356 3276 574 UNINET, MX 10620 3493 473 1049 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 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1229 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1187 371 23 Telefonica del Peru S.A.A., PE 22884 1058 67 366 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1004 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 1247 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 574 82 3 KENET-AS, KE 15399 549 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 14355 40904 5397 AMAZON-02, US 9808 13614 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12356 3276 574 UNINET, MX 12479 7449 1711 149 UNI2-AS, ES 7545 6161 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4746 320 804 CABLEONE, US 39891 4730 289 62 ALJAWWALSTC-AS, SA 18403 4470 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4469 536 310 BBIL-AP BHARTI Airtel Ltd., IN 9009 3948 370 2218 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 13614 13498 CHINAMOBILE-CN China Mobile Communications Grou 8151 12356 11782 UNINET, MX 12479 7449 7300 UNI2-AS, ES 7545 6161 5558 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4730 4668 ALJAWWALSTC-AS, SA 18403 4470 4444 FPT-AS-AP FPT Telecom Company, VN 9498 4469 4159 BBIL-AP BHARTI Airtel Ltd., IN 11492 4746 3942 CABLEONE, US 7552 3940 3912 VIETEL-AS-AP Viettel Group, VN 20940 3907 3783 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 /14:1200 /15:2126 /16:13725 /17:8148 /18:13371 /19:24482 /20:44168 /21:51806 /22:112263 /23:103241 /24:625910 /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 6574 12356 UNINET, MX 12479 6420 7449 UNI2-AS, ES 11492 3560 4746 CABLEONE, US 39891 3485 4730 ALJAWWALSTC-AS, SA 6327 3466 3678 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2507 3947 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2448 14355 AMAZON-02, US 30036 2294 2635 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3493 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 2:1530 3:939 4:10 5:4845 6:165 7:6 8:1531 9:6 11:172 12:1245 13:554 14:2628 15:402 16:304 17:386 18:905 20:573 21:4 22:188 23:7835 24:2653 25:2 27:2795 29:19 31:3351 32:31 33:1 34:84 35:272 36:4437 37:4514 38:9483 39:1087 40:290 41:4323 42:1970 43:2762 44:375 45:18955 46:5116 47:345 49:2021 50:2037 51:594 52:1605 54:362 55:1094 56:11 57:284 58:2277 59:1307 60:1187 61:2954 62:3041 63:1767 64:5619 65:2147 66:4891 67:3096 68:1085 69:3916 70:1041 71:631 72:2898 74:2816 75:1498 76:602 77:2769 78:1895 79:1759 80:2235 81:2089 82:3332 83:1459 84:1975 85:3503 86:1096 87:2122 88:1321 89:4498 90:812 91:8392 92:2780 93:2978 94:4166 95:4446 96:1469 97:311 98:953 99:762 100:71 101:1472 102:4098 103:32927 104:5352 105:777 106:880 107:2654 108:1208 109:4209 110:2248 111:3759 112:2649 113:1861 114:1993 115:2285 116:2098 117:2919 118:3060 119:1965 120:2247 121:1346 122:2815 123:2247 124:1706 125:2922 126:91 128:1568 129:959 130:1286 131:2121 132:780 133:460 134:1609 135:363 136:1490 137:1134 138:2795 139:1604 140:1639 141:1540 142:1905 143:2046 144:1283 145:624 146:2174 147:2111 148:2736 149:2910 150:1279 151:2532 152:2164 153:575 154:7505 155:1979 156:3471 157:2002 158:1417 159:2570 160:3554 161:1972 162:3930 163:2286 164:1911 165:2584 166:1561 167:2089 168:3803 169:774 170:5354 171:1007 172:4244 173:3406 174:902 175:1351 176:3806 177:4703 178:4199 179:2270 180:2760 181:4250 182:3725 183:2633 184:2055 185:21628 186:5368 187:4654 188:4280 189:4369 190:9726 191:1556 192:11368 193:9457 194:7794 195:5568 196:3278 197:3362 198:6096 199:8700 200:8097 201:6347 202:10426 203:10654 204:4566 205:3616 206:4497 207:3525 208:4273 209:5272 210:4695 211:2683 212:4707 213:3855 214:1023 215:52 216:6904 217:3320 218:1562 219:396 220:2193 221:1234 222:750 223:3013 End of report