IPv4 R&E Routing Table Report 23:05 GMT Tue 21 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: 1009323 Prefixes after maximum aggregation (per Origin AS): 391497 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498145 Number of IPv4 prefixes with a valid ROA: 580297 Number of IPv4 prefixes with an invalid ROA: 560 Number of IPv4 prefixes with no ROA: 428466 Total ASes present in the Internet Routing Table: 77381 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66323 Origin ASes announcing only one prefix: 27080 Transit ASes present in the Internet Routing Table: 11058 Transit-only ASes present in the Internet Routing Table: 553 Paths with bogon ASNs present in the IPv4 Routing Table: 26 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: 1023 Number of instances of unregistered ASNs: 1052 Number of 32-bit ASNs allocated by the RIRs: 47760 Number of 32-bit ASNs visible in the Routing Table: 39155 Prefixes from 32-bit ASNs in the Routing Table: 214184 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: 427 Number of addresses announced to Internet: 3111864832 Equivalent to 185 /8s, 123 /16s and 74 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 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: 329264 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270609 Total APNIC prefixes after maximum aggregation: 80062 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 260169 Unique aggregates announced from the APNIC address blocks: 105868 APNIC Region origin ASes present in the Internet Routing Table: 14810 APNIC Prefixes per ASN: 17.57 APNIC Region origin ASes announcing only one prefix: 4488 APNIC Region transit ASes present in the Internet Routing Table: 1988 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: 10386 Number of APNIC addresses announced to Internet: 751635968 Equivalent to 44 /8s, 205 /16s and 14 /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: 297566 Total ARIN prefixes after maximum aggregation: 134572 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298663 Unique aggregates announced from the ARIN address blocks: 144549 ARIN Region origin ASes present in the Internet Routing Table: 19325 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7094 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: 5374 Number of ARIN addresses announced to Internet: 1352724224 Equivalent to 80 /8s, 160 /16s and 239 /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: 280128 Total RIPE prefixes after maximum aggregation: 138906 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280134 Unique aggregates announced from the RIPE address blocks: 181296 RIPE Region origin ASes present in the Internet Routing Table: 29092 RIPE Prefixes per ASN: 9.63 RIPE Region origin ASes announcing only one prefix: 12122 RIPE Region transit ASes present in the Internet Routing Table: 4049 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: 12777 Number of RIPE addresses announced to Internet: 732852224 Equivalent to 43 /8s, 174 /16s and 112 /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: 124895 Total LACNIC prefixes after maximum aggregation: 30395 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 120965 Unique aggregates announced from the LACNIC address blocks: 49467 LACNIC Region origin ASes present in the Internet Routing Table: 11300 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2658 LACNIC Region transit ASes present in the Internet Routing Table: 2547 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: 9278 Number of LACNIC addresses announced to Internet: 170727168 Equivalent to 10 /8s, 45 /16s and 23 /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: 35102 Total AfriNIC prefixes after maximum aggregation: 6875 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 48965 Unique aggregates announced from the AfriNIC address blocks: 16593 AfriNIC Region origin ASes present in the Internet Routing Table: 1973 AfriNIC Prefixes per ASN: 24.82 AfriNIC Region origin ASes announcing only one prefix: 718 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: 1340 Number of AfriNIC addresses announced to Internet: 103700224 Equivalent to 6 /8s, 46 /16s and 87 /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 13841 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6170 834 591 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4478 536 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4383 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3982 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3699 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 2932 863 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2505 516 1617 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 14299 41081 5364 AMAZON-02, US 11492 4772 322 788 CABLEONE, US 22773 4312 3089 366 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3685 1320 82 SHAW, CA 396982 3275 4825 468 GOOGLE-CLOUD-PLATFORM, US 749 3218 54766 2469 DNIC-AS-00749, US 4155 3133 242 1749 USDA-1, US 16625 2906 1239 2173 AKAMAI-AS, US 174 2845 8762 865 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 7381 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3978 376 2263 M247, RO 20940 3915 3395 124 AKAMAI-ASN1, NL 12389 3139 2314 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2503 177 1812 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1721 206 1005 HOSTROYALE, IN 8452 1668 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 12419 3289 576 UNINET, MX 10620 3479 468 1087 Telmex Colombia S.A., CO 13999 2510 510 349 Mega Cable, S.A. de C.V., MX 11830 1990 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 1244 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 1261 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 14299 41081 5364 AMAZON-02, US 9808 13841 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12419 3289 576 UNINET, MX 12479 7381 1711 149 UNI2-AS, ES 7545 6170 834 591 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4772 322 788 CABLEONE, US 9498 4478 536 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4383 347 25 FPT-AS-AP FPT Telecom Company, VN 22773 4312 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 13841 13724 CHINAMOBILE-CN China Mobile Communications Grou 8151 12419 11843 UNINET, MX 12479 7381 7232 UNI2-AS, ES 7545 6170 5579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4383 4358 FPT-AS-AP FPT Telecom Company, VN 9498 4478 4165 BBIL-AP BHARTI Airtel Ltd., IN 11492 4772 3984 CABLEONE, US 7552 3982 3954 VIETEL-AS-AP Viettel Group, VN 22773 4312 3946 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 /15:2121 /16:13747 /17:8149 /18:13413 /19:24580 /20:44223 /21:51832 /22:112540 /23:104184 /24:632293 /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 6630 12419 UNINET, MX 12479 6349 7381 UNI2-AS, ES 11492 3585 4772 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3473 3685 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2649 4312 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2410 14299 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 2:1526 3:939 4:10 5:4848 6:170 7:6 8:1516 9:6 11:172 12:1237 13:535 14:2650 15:402 16:303 17:386 18:905 20:579 21:4 22:188 23:8075 24:2559 25:2 27:2791 29:19 31:3331 32:31 33:1 34:84 35:274 36:4482 37:4551 38:9537 39:1107 40:472 41:4246 42:1942 43:2813 44:397 45:19236 46:5167 47:369 49:2103 50:2041 51:595 52:1630 54:353 55:1104 56:11 57:283 58:2309 59:1308 60:1189 61:2951 62:3081 63:1751 64:5808 65:2125 66:5573 67:3142 68:1468 69:4104 70:1041 71:626 72:2978 74:2840 75:1510 76:594 77:2768 78:1898 79:1751 80:2247 81:2131 82:3468 83:1478 84:1986 85:3562 86:1102 87:2131 88:1324 89:4520 90:814 91:8380 92:2809 93:2981 94:4154 95:4499 96:1468 97:313 98:948 99:751 100:71 101:1478 102:4170 103:32807 104:5444 105:781 106:896 107:2793 108:1202 109:4230 110:2260 111:3820 112:2707 113:1855 114:2069 115:2292 116:2103 117:3044 118:3030 119:2016 120:2298 121:1482 122:2807 123:2254 124:1706 125:2909 126:124 128:1566 129:956 130:1427 131:2152 132:788 133:459 134:1621 135:364 136:1492 137:1132 138:2807 139:1586 140:1639 141:1560 142:2172 143:2105 144:1289 145:629 146:2177 147:2130 148:2755 149:2886 150:1301 151:2635 152:2215 153:576 154:7880 155:2212 156:3169 157:2014 158:1449 159:2599 160:3631 161:2001 162:3956 163:2293 164:1947 165:2558 166:1565 167:2117 168:3810 169:773 170:5389 171:1063 172:4463 173:3433 174:905 175:1353 176:3716 177:4705 178:4312 179:2278 180:2879 181:4278 182:3749 183:2558 184:2071 185:21638 186:5367 187:4692 188:4380 189:4384 190:9715 191:1552 192:11381 193:9469 194:7831 195:5570 196:3237 197:3336 198:6082 199:8807 200:8055 201:6356 202:10441 203:10587 204:4606 205:3622 206:4383 207:3708 208:4229 209:5356 210:4686 211:2687 212:4889 213:3911 214:1036 215:53 216:7139 217:3357 218:1577 219:400 220:2194 221:1249 222:754 223:3086 End of report