IPv4 R&E Routing Table Report 23:05 GMT Fri 26 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: 1002045 Prefixes after maximum aggregation (per Origin AS): 388780 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495691 Number of IPv4 prefixes with a valid ROA: 572785 Number of IPv4 prefixes with an invalid ROA: 964 Number of IPv4 prefixes with no ROA: 428296 Total ASes present in the Internet Routing Table: 77265 Prefixes per ASN: 12.97 Origin-only ASes present in the Internet Routing Table: 66228 Origin ASes announcing only one prefix: 27039 Transit ASes present in the Internet Routing Table: 11037 Transit-only ASes present in the Internet Routing Table: 541 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: 1035 Number of instances of unregistered ASNs: 1066 Number of 32-bit ASNs allocated by the RIRs: 47561 Number of 32-bit ASNs visible in the Routing Table: 38993 Prefixes from 32-bit ASNs in the Routing Table: 211366 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: 3111371520 Equivalent to 185 /8s, 115 /16s and 195 /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: 326349 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269257 Total APNIC prefixes after maximum aggregation: 79409 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 259255 Unique aggregates announced from the APNIC address blocks: 105875 APNIC Region origin ASes present in the Internet Routing Table: 14779 APNIC Prefixes per ASN: 17.54 APNIC Region origin ASes announcing only one prefix: 4470 APNIC Region transit ASes present in the Internet Routing Table: 1984 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: 10347 Number of APNIC addresses announced to Internet: 751223808 Equivalent to 44 /8s, 198 /16s and 196 /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: 292974 Total ARIN prefixes after maximum aggregation: 133433 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 294384 Unique aggregates announced from the ARIN address blocks: 142881 ARIN Region origin ASes present in the Internet Routing Table: 19294 ARIN Prefixes per ASN: 15.26 ARIN Region origin ASes announcing only one prefix: 7089 ARIN Region transit ASes present in the Internet Routing Table: 1927 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: 5340 Number of ARIN addresses announced to Internet: 1352477952 Equivalent to 80 /8s, 157 /16s and 45 /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: 279166 Total RIPE prefixes after maximum aggregation: 138182 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278670 Unique aggregates announced from the RIPE address blocks: 180483 RIPE Region origin ASes present in the Internet Routing Table: 29060 RIPE Prefixes per ASN: 9.59 RIPE Region origin ASes announcing only one prefix: 12091 RIPE Region transit ASes present in the Internet Routing Table: 4011 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: 12722 Number of RIPE addresses announced to Internet: 732907264 Equivalent to 43 /8s, 175 /16s and 71 /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: 124540 Total LACNIC prefixes after maximum aggregation: 30232 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120788 Unique aggregates announced from the LACNIC address blocks: 49432 LACNIC Region origin ASes present in the Internet Routing Table: 11290 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2674 LACNIC Region transit ASes present in the Internet Routing Table: 2527 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: 9256 Number of LACNIC addresses announced to Internet: 170708736 Equivalent to 10 /8s, 44 /16s and 207 /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: 35073 Total AfriNIC prefixes after maximum aggregation: 6831 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 48520 Unique aggregates announced from the AfriNIC address blocks: 16643 AfriNIC Region origin ASes present in the Internet Routing Table: 1961 AfriNIC Prefixes per ASN: 24.74 AfriNIC Region origin ASes announcing only one prefix: 715 AfriNIC Region transit ASes present in the Internet Routing Table: 383 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: 1328 Number of AfriNIC addresses announced to Internet: 103820288 Equivalent to 6 /8s, 48 /16s and 44 /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 6163 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4482 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4469 536 310 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 3305 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 2242 494 1423 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 14315 40900 5382 AMAZON-02, US 11492 4746 320 804 CABLEONE, US 22773 3950 3045 314 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3678 1320 82 SHAW, CA 396982 3271 4824 460 GOOGLE-CLOUD-PLATFORM, US 174 3247 8770 872 COGENT-174, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3071 238 1701 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 3967 371 2222 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 12362 3276 574 UNINET, MX 10620 3503 474 1047 Telmex Colombia S.A., CO 13999 2540 511 347 Mega Cable, S.A. de C.V., MX 11830 1988 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 1231 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1177 371 23 Telefonica del Peru S.A.A., PE 22884 1058 67 366 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1009 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 36935 1077 522 45 Vodafone-, EG 37069 1055 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 564 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 14315 40900 5382 AMAZON-02, US 9808 13674 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12362 3276 574 UNINET, MX 12479 7450 1711 149 UNI2-AS, ES 7545 6163 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4746 320 804 CABLEONE, US 18403 4482 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4469 536 310 BBIL-AP BHARTI Airtel Ltd., IN 9009 3967 371 2222 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 12362 11788 UNINET, MX 12479 7450 7301 UNI2-AS, ES 7545 6163 5560 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4482 4456 FPT-AS-AP FPT Telecom Company, VN 9498 4469 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 /15:2124 /16:13740 /17:8148 /18:13372 /19:24476 /20:44117 /21:51786 /22:112298 /23:103420 /24:626322 /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 6580 12362 UNINET, MX 12479 6423 7450 UNI2-AS, ES 11492 3560 4746 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3678 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2510 3950 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2435 14315 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) ---------------------------------------------- 1:2429 2:1528 3:943 4:10 5:4850 6:170 7:6 8:1532 9:6 11:172 12:1245 13:548 14:2634 15:401 16:304 17:388 18:903 20:573 21:4 22:188 23:7844 24:2646 25:2 27:2777 29:19 31:3352 32:31 33:1 34:84 35:272 36:4458 37:4529 38:9495 39:1091 40:291 41:4315 42:1978 43:2767 44:377 45:18974 46:5132 47:345 49:2023 50:2040 51:594 52:1605 54:362 55:1053 56:11 57:283 58:2281 59:1310 60:1188 61:2953 62:3045 63:1767 64:5612 65:2145 66:4892 67:3078 68:1087 69:3914 70:1042 71:631 72:2910 74:2817 75:1497 76:602 77:2768 78:1899 79:1761 80:2237 81:2090 82:3431 83:1463 84:1977 85:3509 86:1094 87:2124 88:1322 89:4503 90:813 91:8403 92:2782 93:2979 94:4186 95:4456 96:1472 97:312 98:953 99:758 100:71 101:1473 102:4126 103:32907 104:5362 105:777 106:880 107:2654 108:1207 109:4219 110:2256 111:3774 112:2650 113:1865 114:1992 115:2279 116:2098 117:2932 118:3057 119:1965 120:2261 121:1346 122:2817 123:2246 124:1711 125:2875 126:91 128:1569 129:959 130:1270 131:2127 132:781 133:461 134:1603 135:365 136:1493 137:1123 138:2790 139:1610 140:1638 141:1556 142:1907 143:2024 144:1273 145:626 146:2168 147:2117 148:2722 149:2909 150:1277 151:2539 152:2161 153:576 154:7484 155:2046 156:3476 157:2004 158:1420 159:2583 160:3558 161:1973 162:3929 163:2291 164:1928 165:2576 166:1560 167:2096 168:3814 169:773 170:5357 171:1009 172:4247 173:3407 174:904 175:1351 176:3808 177:4718 178:4229 179:2263 180:2761 181:4228 182:3730 183:2639 184:2052 185:21643 186:5375 187:4651 188:4281 189:4360 190:9676 191:1553 192:11369 193:9461 194:7788 195:5571 196:3271 197:3355 198:6097 199:8725 200:8097 201:6354 202:10438 203:10647 204:4570 205:3496 206:4503 207:3543 208:4291 209:5283 210:4705 211:2675 212:4770 213:3883 214:1035 215:52 216:6917 217:3329 218:1564 219:396 220:2192 221:1234 222:750 223:3025 End of report