IPv4 R&E Routing Table Report 23:05 GMT Fri 24 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: 1010118 Prefixes after maximum aggregation (per Origin AS): 392131 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 498343 Number of IPv4 prefixes with a valid ROA: 581707 Number of IPv4 prefixes with an invalid ROA: 558 Number of IPv4 prefixes with no ROA: 427853 Total ASes present in the Internet Routing Table: 77374 Prefixes per ASN: 13.06 Origin-only ASes present in the Internet Routing Table: 66311 Origin ASes announcing only one prefix: 27084 Transit ASes present in the Internet Routing Table: 11063 Transit-only ASes present in the Internet Routing Table: 546 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: 1026 Number of instances of unregistered ASNs: 1055 Number of 32-bit ASNs allocated by the RIRs: 47797 Number of 32-bit ASNs visible in the Routing Table: 39160 Prefixes from 32-bit ASNs in the Routing Table: 214340 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: 422 Number of addresses announced to Internet: 3111459584 Equivalent to 185 /8s, 117 /16s and 27 /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: 329629 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270797 Total APNIC prefixes after maximum aggregation: 80382 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 260328 Unique aggregates announced from the APNIC address blocks: 105698 APNIC Region origin ASes present in the Internet Routing Table: 14814 APNIC Prefixes per ASN: 17.57 APNIC Region origin ASes announcing only one prefix: 4496 APNIC Region transit ASes present in the Internet Routing Table: 1999 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: 10393 Number of APNIC addresses announced to Internet: 751577344 Equivalent to 44 /8s, 204 /16s and 41 /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: 297764 Total ARIN prefixes after maximum aggregation: 134785 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298708 Unique aggregates announced from the ARIN address blocks: 144679 ARIN Region origin ASes present in the Internet Routing Table: 19331 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7104 ARIN Region transit ASes present in the Internet Routing Table: 1907 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5381 Number of ARIN addresses announced to Internet: 1352180224 Equivalent to 80 /8s, 152 /16s and 162 /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: 280338 Total RIPE prefixes after maximum aggregation: 139020 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 280294 Unique aggregates announced from the RIPE address blocks: 181465 RIPE Region origin ASes present in the Internet Routing Table: 29077 RIPE Prefixes per ASN: 9.64 RIPE Region origin ASes announcing only one prefix: 12097 RIPE Region transit ASes present in the Internet Routing Table: 4053 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 27 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12770 Number of RIPE addresses announced to Internet: 733212160 Equivalent to 43 /8s, 179 /16s and 238 /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: 124951 Total LACNIC prefixes after maximum aggregation: 30405 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121055 Unique aggregates announced from the LACNIC address blocks: 49446 LACNIC Region origin ASes present in the Internet Routing Table: 11313 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2679 LACNIC Region transit ASes present in the Internet Routing Table: 2540 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: 9286 Number of LACNIC addresses announced to Internet: 170645248 Equivalent to 10 /8s, 43 /16s and 215 /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: 35242 Total AfriNIC prefixes after maximum aggregation: 6854 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 49311 Unique aggregates announced from the AfriNIC address blocks: 16687 AfriNIC Region origin ASes present in the Internet Routing Table: 1965 AfriNIC Prefixes per ASN: 25.09 AfriNIC Region origin ASes announcing only one prefix: 708 AfriNIC Region transit ASes present in the Internet Routing Table: 375 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: 1330 Number of AfriNIC addresses announced to Internet: 103620608 Equivalent to 6 /8s, 45 /16s and 32 /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 13307 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6127 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4479 536 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4427 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3983 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3715 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3309 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3238 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2934 863 503 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2403 267 1875 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14371 41103 5379 AMAZON-02, US 11492 4772 316 803 CABLEONE, US 22773 4290 3088 368 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3860 286 85 VIASAT-SP-BACKBONE, US 6327 3686 1320 82 SHAW, CA 396982 3278 4826 469 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 4155 3133 243 1750 USDA-1, US 16625 2873 1224 2151 AKAMAI-AS, US 36352 2850 231 915 AS-COLOCROSSING, 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 7351 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3985 376 2270 M247, RO 20940 3900 3395 124 AKAMAI-ASN1, NL 12389 3142 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2509 177 1818 CDNEXT, GB 34984 2416 363 577 TELLCOM-AS, TR 203020 1721 206 1005 HOSTROYALE, IN 8452 1674 1852 13 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 12440 3271 579 UNINET, MX 10620 3455 463 1098 Telmex Colombia S.A., CO 13999 2497 508 354 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 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1280 371 23 Telefonica del Peru S.A.A., PE 11664 1231 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1059 67 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1024 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 1925 630 32 RAYA-AS, EG 36992 1513 1498 386 ETISALAT-MISR, EG 29571 1284 102 52 ORANGE-COTE-IVOIRE, CI 24863 1263 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1101 521 44 Vodafone-, EG 37069 1085 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 573 82 3 KENET-AS, KE 15399 552 57 56 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 14371 41103 5379 AMAZON-02, US 9808 13307 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12440 3271 579 UNINET, MX 12479 7351 1711 149 UNI2-AS, ES 7545 6127 834 590 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4772 316 803 CABLEONE, US 9498 4479 536 313 BBIL-AP BHARTI Airtel Ltd., IN 18403 4427 347 26 FPT-AS-AP FPT Telecom Company, VN 22773 4290 3088 368 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 13307 13190 CHINAMOBILE-CN China Mobile Communications Grou 8151 12440 11861 UNINET, MX 12479 7351 7202 UNI2-AS, ES 7545 6127 5537 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4427 4401 FPT-AS-AP FPT Telecom Company, VN 9498 4479 4166 BBIL-AP BHARTI Airtel Ltd., IN 11492 4772 3969 CABLEONE, US 7552 3983 3955 VIETEL-AS-AP Viettel Group, VN 22773 4290 3922 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 6461 ZAYO-6461, 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 /14:1195 /15:2122 /16:13747 /17:8176 /18:13418 /19:24576 /20:44302 /21:51858 /22:112569 /23:104283 /24:632829 /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 6659 12440 UNINET, MX 12479 6310 7351 UNI2-AS, ES 11492 3586 4772 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3474 3686 SHAW, CA 7155 2819 3860 VIASAT-SP-BACKBONE, US 22773 2627 4290 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2427 14371 AMAZON-02, US 30036 2295 2637 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2210 3455 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) ---------------------------------------------- 1:2438 2:1529 3:952 4:10 5:4883 6:170 7:6 8:1512 9:6 11:172 12:1239 13:543 14:2655 15:402 16:303 17:387 18:907 20:579 21:4 22:188 23:8035 24:2559 25:2 27:2791 29:19 31:3349 32:31 33:1 34:84 35:275 36:4507 37:4540 38:9529 39:1097 40:472 41:4309 42:1954 43:2809 44:397 45:19277 46:5176 47:369 49:2108 50:2046 51:595 52:1630 54:357 55:1058 56:11 57:285 58:2309 59:1306 60:1189 61:2952 62:3090 63:1756 64:5835 65:2133 66:5599 67:3140 68:1474 69:4107 70:1042 71:628 72:2975 74:2853 75:1506 76:600 77:2764 78:1898 79:1751 80:2240 81:2114 82:3457 83:1471 84:1990 85:3573 86:1096 87:2132 88:1329 89:4523 90:814 91:8392 92:2808 93:2980 94:4158 95:4491 96:1467 97:313 98:948 99:754 100:71 101:1475 102:4197 103:32785 104:5447 105:769 106:896 107:2774 108:1200 109:4218 110:2259 111:3825 112:2722 113:1869 114:2070 115:2245 116:2108 117:3034 118:3051 119:2026 120:2317 121:1481 122:2806 123:2254 124:1705 125:2911 126:124 128:1561 129:957 130:1425 131:2187 132:788 133:461 134:1622 135:365 136:1488 137:1134 138:2809 139:1578 140:1640 141:1554 142:2213 143:2083 144:1296 145:629 146:2176 147:2123 148:2758 149:2893 150:1298 151:2622 152:2212 153:582 154:7954 155:2196 156:3222 157:2007 158:1449 159:2602 160:3639 161:2002 162:3969 163:2300 164:1947 165:2561 166:1515 167:2110 168:3792 169:774 170:5393 171:1059 172:4459 173:3421 174:904 175:1348 176:3755 177:4692 178:4313 179:2288 180:2878 181:4297 182:3750 183:2559 184:2054 185:21634 186:5370 187:4667 188:4396 189:4390 190:9735 191:1561 192:11372 193:9483 194:7837 195:5573 196:3259 197:3340 198:6092 199:8839 200:8075 201:6378 202:10446 203:10599 204:4606 205:3637 206:4348 207:3718 208:4241 209:5360 210:4685 211:2688 212:4898 213:3918 214:1040 215:53 216:7128 217:3352 218:1574 219:400 220:2199 221:1257 222:753 223:3112 End of report