IPv4 R&E Routing Table Report 23:05 GMT Mon 20 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: 1009075 Prefixes after maximum aggregation (per Origin AS): 391382 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498002 Number of IPv4 prefixes with a valid ROA: 579842 Number of IPv4 prefixes with an invalid ROA: 560 Number of IPv4 prefixes with no ROA: 428673 Total ASes present in the Internet Routing Table: 77373 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66323 Origin ASes announcing only one prefix: 27076 Transit ASes present in the Internet Routing Table: 11050 Transit-only ASes present in the Internet Routing Table: 556 Paths with bogon ASNs present in the IPv4 Routing Table: 66 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1024 Number of instances of unregistered ASNs: 1090 Number of 32-bit ASNs allocated by the RIRs: 47761 Number of 32-bit ASNs visible in the Routing Table: 39139 Prefixes from 32-bit ASNs in the Routing Table: 214140 Number of bogon 32-bit ASNs visible in the Routing Table: 152 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 429 Number of addresses announced to Internet: 3111709952 Equivalent to 185 /8s, 120 /16s and 237 /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: 329249 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270590 Total APNIC prefixes after maximum aggregation: 80065 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 260181 Unique aggregates announced from the APNIC address blocks: 105888 APNIC Region origin ASes present in the Internet Routing Table: 14806 APNIC Prefixes per ASN: 17.57 APNIC Region origin ASes announcing only one prefix: 4482 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: 10383 Number of APNIC addresses announced to Internet: 751631616 Equivalent to 44 /8s, 204 /16s and 253 /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: 297354 Total ARIN prefixes after maximum aggregation: 134432 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298448 Unique aggregates announced from the ARIN address blocks: 144504 ARIN Region origin ASes present in the Internet Routing Table: 19323 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7096 ARIN Region transit ASes present in the Internet Routing Table: 1906 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5368 Number of ARIN addresses announced to Internet: 1352710912 Equivalent to 80 /8s, 160 /16s and 187 /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: 280069 Total RIPE prefixes after maximum aggregation: 138941 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280065 Unique aggregates announced from the RIPE address blocks: 181221 RIPE Region origin ASes present in the Internet Routing Table: 29084 RIPE Prefixes per ASN: 9.63 RIPE Region origin ASes announcing only one prefix: 12121 RIPE Region transit ASes present in the Internet Routing Table: 4044 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: 12775 Number of RIPE addresses announced to Internet: 732786432 Equivalent to 43 /8s, 173 /16s and 111 /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: 124919 Total LACNIC prefixes after maximum aggregation: 30376 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120998 Unique aggregates announced from the LACNIC address blocks: 49440 LACNIC Region origin ASes present in the Internet Routing Table: 11305 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2664 LACNIC Region transit ASes present in the Internet Routing Table: 2542 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9281 Number of LACNIC addresses announced to Internet: 170711040 Equivalent to 10 /8s, 44 /16s and 216 /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: 35119 Total AfriNIC prefixes after maximum aggregation: 6877 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 48954 Unique aggregates announced from the AfriNIC address blocks: 16573 AfriNIC Region origin ASes present in the Internet Routing Table: 1967 AfriNIC Prefixes per ASN: 24.89 AfriNIC Region origin ASes announcing only one prefix: 713 AfriNIC Region transit ASes present in the Internet Routing Table: 380 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1332 Number of AfriNIC addresses announced to Internet: 103641088 Equivalent to 6 /8s, 45 /16s and 112 /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 13840 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6179 834 598 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4398 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3979 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3686 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3299 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3167 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2931 863 502 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2509 516 1619 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 14294 41080 5357 AMAZON-02, US 11492 4771 322 787 CABLEONE, US 22773 4311 3089 366 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3685 1320 82 SHAW, CA 396982 3273 4825 466 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 4155 3111 241 1750 USDA-1, US 16625 2903 1238 2170 AKAMAI-AS, US 174 2842 8762 845 COGENT-174, 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 7380 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3948 372 2238 M247, RO 20940 3915 3395 124 AKAMAI-ASN1, NL 12389 3137 2313 866 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2544 182 1851 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1718 205 1005 HOSTROYALE, IN 8452 1665 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 12412 3287 579 UNINET, MX 10620 3479 468 1087 Telmex Colombia S.A., CO 13999 2517 511 347 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1280 371 23 Telefonica del Peru S.A.A., PE 11664 1238 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1059 67 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 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 1843 630 32 RAYA-AS, EG 36992 1513 1498 386 ETISALAT-MISR, EG 29571 1284 102 52 ORANGE-COTE-IVOIRE, CI 24863 1250 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1118 522 46 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 568 82 3 KENET-AS, KE 15399 551 57 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 14294 41080 5357 AMAZON-02, US 9808 13840 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12412 3287 579 UNINET, MX 12479 7380 1711 149 UNI2-AS, ES 7545 6179 834 598 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4771 322 787 CABLEONE, US 9498 4477 536 312 BBIL-AP BHARTI Airtel Ltd., IN 18403 4398 347 25 FPT-AS-AP FPT Telecom Company, VN 22773 4311 3089 366 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 13840 13723 CHINAMOBILE-CN China Mobile Communications Grou 8151 12412 11833 UNINET, MX 12479 7380 7231 UNI2-AS, ES 7545 6179 5581 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4398 4373 FPT-AS-AP FPT Telecom Company, VN 9498 4477 4165 BBIL-AP BHARTI Airtel Ltd., IN 11492 4771 3984 CABLEONE, US 7552 3979 3951 VIETEL-AS-AP Viettel Group, VN 22773 4311 3945 ASN-CXA-ALL-CCI-22773-RDC, 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 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, 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 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 397015 UNALLOCATED 8.44.246.0/24 3356 LEVEL3, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 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 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 /12:300 /13:579 /14:1198 /15:2120 /16:13748 /17:8146 /18:13408 /19:24576 /20:44235 /21:51811 /22:112526 /23:104131 /24:632133 /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 6626 12412 UNINET, MX 12479 6348 7380 UNI2-AS, ES 11492 3584 4771 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3473 3685 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2648 4311 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2408 14294 AMAZON-02, US 30036 2295 2636 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3479 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 3:938 4:10 5:4866 6:170 7:6 8:1517 9:6 11:172 12:1238 13:537 14:2654 15:402 16:301 17:379 18:905 20:578 21:4 22:188 23:8019 24:2559 25:2 27:2792 29:19 31:3330 32:31 33:1 34:84 35:272 36:4483 37:4545 38:9479 39:1107 40:471 41:4279 42:1951 43:2811 44:395 45:19214 46:5172 47:369 49:2103 50:2043 51:590 52:1630 54:353 55:1107 56:11 57:282 58:2310 59:1308 60:1189 61:2951 62:3082 63:1754 64:5794 65:2122 66:5562 67:3139 68:1476 69:4100 70:1041 71:626 72:2992 74:2818 75:1508 76:594 77:2760 78:1897 79:1751 80:2246 81:2129 82:3471 83:1478 84:1986 85:3562 86:1102 87:2133 88:1325 89:4509 90:814 91:8379 92:2809 93:2981 94:4152 95:4501 96:1467 97:313 98:949 99:751 100:71 101:1479 102:4165 103:32825 104:5447 105:781 106:895 107:2792 108:1196 109:4224 110:2251 111:3820 112:2707 113:1856 114:2069 115:2292 116:2104 117:3045 118:3031 119:2016 120:2299 121:1481 122:2806 123:2255 124:1705 125:2909 126:124 128:1568 129:956 130:1420 131:2166 132:787 133:461 134:1620 135:364 136:1491 137:1134 138:2814 139:1585 140:1639 141:1556 142:2168 143:2091 144:1278 145:628 146:2174 147:2128 148:2753 149:2913 150:1299 151:2631 152:2207 153:576 154:7871 155:2202 156:3169 157:2015 158:1446 159:2601 160:3635 161:1997 162:3950 163:2294 164:1949 165:2555 166:1564 167:2116 168:3811 169:774 170:5387 171:1061 172:4474 173:3429 174:905 175:1353 176:3750 177:4711 178:4308 179:2282 180:2880 181:4268 182:3747 183:2558 184:2071 185:21625 186:5356 187:4706 188:4391 189:4408 190:9712 191:1555 192:11377 193:9476 194:7821 195:5564 196:3246 197:3331 198:6080 199:8798 200:8051 201:6360 202:10451 203:10588 204:4598 205:3638 206:4380 207:3710 208:4227 209:5346 210:4685 211:2687 212:4874 213:3905 214:1033 215:53 216:7134 217:3358 218:1577 219:400 220:2196 221:1250 222:754 223:3084 End of report