IPv4 R&E Routing Table Report 23:05 GMT Wed 31 Dec, 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: 1021754 Prefixes after maximum aggregation (per Origin AS): 393955 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 506017 Number of IPv4 prefixes with a valid ROA: 609031 Number of IPv4 prefixes with an invalid ROA: 624 Number of IPv4 prefixes with no ROA: 412099 Total ASes present in the Internet Routing Table: 77629 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66507 Origin ASes announcing only one prefix: 27087 Transit ASes present in the Internet Routing Table: 11122 Transit-only ASes present in the Internet Routing Table: 573 Paths with bogon ASNs present in the IPv4 Routing Table: 40 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: 964 Number of instances of unregistered ASNs: 993 Number of 32-bit ASNs allocated by the RIRs: 48315 Number of 32-bit ASNs visible in the Routing Table: 39519 Prefixes from 32-bit ASNs in the Routing Table: 220118 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: 572 Number of addresses announced to Internet: 3104492544 Equivalent to 185 /8s, 10 /16s and 204 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 333972 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277599 Total APNIC prefixes after maximum aggregation: 80822 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 264253 Unique aggregates announced from the APNIC address blocks: 106442 APNIC Region origin ASes present in the Internet Routing Table: 14914 APNIC Prefixes per ASN: 17.72 APNIC Region origin ASes announcing only one prefix: 4503 APNIC Region transit ASes present in the Internet Routing Table: 2010 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10498 Number of APNIC addresses announced to Internet: 753115392 Equivalent to 44 /8s, 227 /16s and 161 /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: 298611 Total ARIN prefixes after maximum aggregation: 134680 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298876 Unique aggregates announced from the ARIN address blocks: 145591 ARIN Region origin ASes present in the Internet Routing Table: 19358 ARIN Prefixes per ASN: 15.44 ARIN Region origin ASes announcing only one prefix: 7070 ARIN Region transit ASes present in the Internet Routing Table: 1925 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: 5420 Number of ARIN addresses announced to Internet: 1342296832 Equivalent to 80 /8s, 1 /16s and 211 /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: 282685 Total RIPE prefixes after maximum aggregation: 140026 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283732 Unique aggregates announced from the RIPE address blocks: 184208 RIPE Region origin ASes present in the Internet Routing Table: 29130 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12092 RIPE Region transit ASes present in the Internet Routing Table: 4055 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12898 Number of RIPE addresses announced to Internet: 735148800 Equivalent to 43 /8s, 209 /16s and 123 /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: 125629 Total LACNIC prefixes after maximum aggregation: 30858 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121425 Unique aggregates announced from the LACNIC address blocks: 49788 LACNIC Region origin ASes present in the Internet Routing Table: 11333 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2685 LACNIC Region transit ASes present in the Internet Routing Table: 2551 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9336 Number of LACNIC addresses announced to Internet: 170479872 Equivalent to 10 /8s, 41 /16s and 81 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + 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: 36266 Total AfriNIC prefixes after maximum aggregation: 6915 AfriNIC Deaggregation factor: 5.24 Prefixes being announced from the AfriNIC address blocks: 52896 Unique aggregates announced from the AfriNIC address blocks: 19503 AfriNIC Region origin ASes present in the Internet Routing Table: 2003 AfriNIC Prefixes per ASN: 26.41 AfriNIC Region origin ASes announcing only one prefix: 737 AfriNIC Region transit ASes present in the Internet Routing Table: 382 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: 1367 Number of AfriNIC addresses announced to Internet: 103138304 Equivalent to 6 /8s, 37 /16s and 196 /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 13382 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6034 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4651 542 334 BBIL-AP BHARTI Airtel Ltd., IN 18403 4354 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4056 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3730 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3400 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3327 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3114 195 612 LCS-AS-AP LARUS Limited, HK 24560 2956 865 496 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 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 14029 38462 5428 AMAZON-02, US 22773 4748 3098 374 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4691 311 946 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 82 SHAW, CA 396982 3319 4867 493 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 174 3046 8771 867 COGENT-174, US 16625 2858 1226 2137 AKAMAI-AS, US 36352 2701 222 887 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 7278 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3950 368 2273 M247, RO 20940 3831 3393 110 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2564 182 1865 CDNEXT, GB 34984 2421 371 574 TELLCOM-AS, TR 8452 1701 1852 14 TE-AS TE-AS, EG 203020 1617 242 783 HOSTROYALE, IN 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 12648 3293 592 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2488 506 351 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1370 2430 270 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1260 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1013 2486 56 TIM SA, BR 18881 905 1127 31 TELEFONICA BRASIL S.A, 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 1982 638 33 RAYA-AS, EG 36992 1847 1534 341 ETISALAT-MISR, EG 24863 1267 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1100 1096 13 MOBINIL, EG 36935 1097 523 46 Vodafone-, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 556 82 3 KENET-AS, KE 15399 548 56 55 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 14029 38462 5428 AMAZON-02, US 9808 13382 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12648 3293 592 UNINET, MX 12479 7278 1711 149 UNI2-AS, ES 7545 6034 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4748 3098 374 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4691 311 946 CABLEONE, US 9498 4651 542 334 BBIL-AP BHARTI Airtel Ltd., IN 18403 4354 347 24 FPT-AS-AP FPT Telecom Company, VN 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 13382 13262 CHINAMOBILE-CN China Mobile Communications Grou 8151 12648 12056 UNINET, MX 12479 7278 7129 UNI2-AS, ES 7545 6034 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4748 4374 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4354 4330 FPT-AS-AP FPT Telecom Company, VN 9498 4651 4317 BBIL-AP BHARTI Airtel Ltd., IN 7552 4056 4027 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE, 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 210097 UNALLOCATED 5.231.245.0/24 209874 TECHTIDE, PT 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 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 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, 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 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 /12:299 /13:577 /14:1197 /15:2089 /16:13649 /17:8168 /18:13448 /19:24718 /20:44709 /21:51916 /22:112905 /23:105478 /24:642437 /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 6852 12648 UNINET, MX 12479 6209 7278 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3536 4691 CABLEONE, US 6327 3478 3690 SHAW, CA 22773 3053 4748 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2466 14029 AMAZON-02, US 30036 2307 2650 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2214 3434 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) ---------------------------------------------- 1:2465 2:1522 3:980 4:10 5:4999 6:187 7:6 8:1507 9:14 11:172 12:1234 13:611 14:2628 15:418 16:274 17:383 18:914 20:591 21:4 22:188 23:8085 24:2561 25:2 27:2800 29:19 31:3392 32:31 33:1 34:84 35:286 36:4639 37:4516 38:9904 39:1223 40:434 41:4484 42:1922 43:2955 44:414 45:19654 46:5012 47:396 49:2163 50:2050 51:598 52:1251 54:229 55:1120 56:11 57:307 58:2315 59:1353 60:1171 61:3090 62:3094 63:1764 64:6109 65:2129 66:5997 67:3260 68:1504 69:4205 70:1027 71:616 72:3083 74:2951 75:1517 76:600 77:2761 78:1929 79:1784 80:2301 81:2080 82:3934 83:1469 84:2024 85:3662 86:1100 87:2196 88:1357 89:4633 90:833 91:8424 92:2830 93:3021 94:4267 95:4557 96:1448 97:311 98:957 99:791 100:68 101:1331 102:4334 103:32896 104:5462 105:770 106:920 107:2809 108:1211 109:4251 110:2308 111:4004 112:2836 113:1960 114:2093 115:2268 116:2174 117:3241 118:2980 119:2108 120:2423 121:1505 122:2951 123:2283 124:1654 125:2967 126:125 128:1576 129:943 130:1538 131:2267 132:763 133:462 134:1635 135:539 136:1497 137:1211 138:2988 139:1598 140:1772 141:1561 142:2430 143:2126 144:1467 145:627 146:2185 147:2139 148:2779 149:2928 150:1329 151:2594 152:2248 153:844 154:9507 155:2310 156:4519 157:2251 158:1480 159:2730 160:3657 161:1994 162:3997 163:2329 164:1963 165:2652 166:1305 167:2197 168:3905 169:806 170:5449 171:1118 172:4518 173:3423 174:901 175:1353 176:3783 177:4742 178:4320 179:2294 180:2972 181:4352 182:3864 183:2678 184:2039 185:21694 186:5513 187:4778 188:4617 189:4476 190:9661 191:1569 192:11407 193:9510 194:7862 195:5646 196:3258 197:3286 198:6062 199:6108 200:8033 201:6382 202:10546 203:10579 204:4668 205:3712 206:4373 207:3819 208:4352 209:5442 210:4722 211:2681 212:4925 213:4030 214:1063 215:54 216:7121 217:3461 218:1611 219:411 220:2191 221:1298 222:775 223:3251 End of report