IPv4 R&E Routing Table Report 23:05 GMT Mon 29 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: 1020674 Prefixes after maximum aggregation (per Origin AS): 393768 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505578 Number of IPv4 prefixes with a valid ROA: 607936 Number of IPv4 prefixes with an invalid ROA: 626 Number of IPv4 prefixes with no ROA: 412112 Total ASes present in the Internet Routing Table: 77632 Prefixes per ASN: 13.15 Origin-only ASes present in the Internet Routing Table: 66512 Origin ASes announcing only one prefix: 27082 Transit ASes present in the Internet Routing Table: 11120 Transit-only ASes present in the Internet Routing Table: 569 Paths with bogon ASNs present in the IPv4 Routing Table: 42 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 966 Number of instances of unregistered ASNs: 995 Number of 32-bit ASNs allocated by the RIRs: 48319 Number of 32-bit ASNs visible in the Routing Table: 39518 Prefixes from 32-bit ASNs in the Routing Table: 220163 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: 608 Number of addresses announced to Internet: 3104327936 Equivalent to 185 /8s, 8 /16s and 73 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 333456 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277253 Total APNIC prefixes after maximum aggregation: 80765 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 264006 Unique aggregates announced from the APNIC address blocks: 106381 APNIC Region origin ASes present in the Internet Routing Table: 14916 APNIC Prefixes per ASN: 17.70 APNIC Region origin ASes announcing only one prefix: 4511 APNIC Region transit ASes present in the Internet Routing Table: 2013 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: 10502 Number of APNIC addresses announced to Internet: 753111040 Equivalent to 44 /8s, 227 /16s and 144 /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: 298057 Total ARIN prefixes after maximum aggregation: 134591 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 298418 Unique aggregates announced from the ARIN address blocks: 145567 ARIN Region origin ASes present in the Internet Routing Table: 19356 ARIN Prefixes per ASN: 15.42 ARIN Region origin ASes announcing only one prefix: 7067 ARIN Region transit ASes present in the Internet Routing Table: 1927 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: 5418 Number of ARIN addresses announced to Internet: 1342135040 Equivalent to 79 /8s, 255 /16s and 91 /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: 282506 Total RIPE prefixes after maximum aggregation: 139974 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283475 Unique aggregates announced from the RIPE address blocks: 184014 RIPE Region origin ASes present in the Internet Routing Table: 29131 RIPE Prefixes per ASN: 9.73 RIPE Region origin ASes announcing only one prefix: 12082 RIPE Region transit ASes present in the Internet Routing Table: 4054 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: 12896 Number of RIPE addresses announced to Internet: 735141888 Equivalent to 43 /8s, 209 /16s and 96 /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: 125646 Total LACNIC prefixes after maximum aggregation: 30871 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121435 Unique aggregates announced from the LACNIC address blocks: 49763 LACNIC Region origin ASes present in the Internet Routing Table: 11332 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2683 LACNIC Region transit ASes present in the Internet Routing Table: 2552 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: 9332 Number of LACNIC addresses announced to Internet: 170472704 Equivalent to 10 /8s, 41 /16s and 53 /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: 36246 Total AfriNIC prefixes after maximum aggregation: 6908 AfriNIC Deaggregation factor: 5.25 Prefixes being announced from the AfriNIC address blocks: 52732 Unique aggregates announced from the AfriNIC address blocks: 19366 AfriNIC Region origin ASes present in the Internet Routing Table: 2006 AfriNIC Prefixes per ASN: 26.29 AfriNIC Region origin ASes announcing only one prefix: 739 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: 1370 Number of AfriNIC addresses announced to Internet: 103152896 Equivalent to 6 /8s, 37 /16s and 253 /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 4648 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4334 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4052 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3401 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3324 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2956 865 496 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2824 177 574 LCS-AS-AP LARUS Limited, HK 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 14000 38461 5440 AMAZON-02, US 22773 4746 3098 374 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 82 SHAW, CA 396982 3318 4867 492 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 174 3002 8769 861 COGENT-174, US 16625 2846 1221 2136 AKAMAI-AS, US 36352 2703 222 889 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 7280 1711 149 UNI2-AS, ES 39891 4901 302 70 ALJAWWALSTC-AS, SA 9009 3934 367 2268 M247, RO 20940 3832 3394 121 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2567 182 1867 CDNEXT, GB 34984 2421 371 574 TELLCOM-AS, TR 8452 1704 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 12646 3277 591 UNINET, MX 10620 3433 457 1107 Telmex Colombia S.A., CO 13999 2487 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 904 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 1850 1538 336 ETISALAT-MISR, EG 24863 1267 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1100 1096 13 MOBINIL, EG 36935 1076 522 33 Vodafone-, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 549 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 14000 38461 5440 AMAZON-02, US 9808 13382 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12646 3277 591 UNINET, MX 12479 7280 1711 149 UNI2-AS, ES 7545 6034 834 579 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 302 70 ALJAWWALSTC-AS, SA 22773 4746 3098 374 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4688 311 948 CABLEONE, US 9498 4648 542 333 BBIL-AP BHARTI Airtel Ltd., IN 18403 4334 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 12646 12055 UNINET, MX 12479 7280 7131 UNI2-AS, ES 7545 6034 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 4831 ALJAWWALSTC-AS, SA 22773 4746 4372 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4648 4315 BBIL-AP BHARTI Airtel Ltd., IN 18403 4334 4310 FPT-AS-AP FPT Telecom Company, VN 7552 4052 4023 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 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 21861 UNALLOCATED 12.37.59.0/24 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 /13:578 /14:1197 /15:2088 /16:13649 /17:8165 /18:13448 /19:24713 /20:44699 /21:51925 /22:112872 /23:105467 /24:641410 /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 6851 12646 UNINET, MX 12479 6211 7280 UNI2-AS, ES 39891 3587 4901 ALJAWWALSTC-AS, SA 11492 3533 4688 CABLEONE, US 6327 3478 3690 SHAW, CA 22773 3051 4746 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2455 14000 AMAZON-02, US 30036 2322 2665 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3433 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) ---------------------------------------------- 1:2453 2:1516 3:978 4:10 5:4983 6:187 7:6 8:1507 9:10 11:172 12:1234 13:600 14:2627 15:415 16:270 17:383 18:914 20:589 21:4 22:188 23:8056 24:2562 25:2 27:2799 29:19 31:3388 32:31 33:1 34:84 35:287 36:4637 37:4517 38:9928 39:1223 40:436 41:4497 42:1919 43:2944 44:413 45:19621 46:5048 47:395 49:2165 50:2057 51:597 52:1257 54:225 55:1127 56:11 57:307 58:2319 59:1345 60:1171 61:3089 62:3037 63:1758 64:5991 65:2128 66:5918 67:3239 68:1504 69:4182 70:1027 71:616 72:3075 74:2933 75:1517 76:599 77:2761 78:1929 79:1793 80:2303 81:2077 82:3922 83:1471 84:2024 85:3661 86:1101 87:2193 88:1357 89:4626 90:835 91:8425 92:2832 93:3020 94:4255 95:4550 96:1432 97:311 98:958 99:784 100:68 101:1331 102:4341 103:32900 104:5461 105:770 106:920 107:2810 108:1210 109:4264 110:2310 111:4005 112:2835 113:1957 114:2093 115:2269 116:2176 117:3179 118:2976 119:2108 120:2425 121:1504 122:2950 123:2284 124:1654 125:2963 126:125 128:1577 129:942 130:1533 131:2263 132:753 133:462 134:1636 135:539 136:1500 137:1211 138:2969 139:1595 140:1772 141:1563 142:2430 143:2132 144:1419 145:626 146:2184 147:2136 148:2781 149:2909 150:1329 151:2593 152:2247 153:823 154:9409 155:2285 156:4510 157:2245 158:1476 159:2729 160:3657 161:1994 162:3983 163:2327 164:1964 165:2651 166:1306 167:2195 168:3908 169:808 170:5464 171:1118 172:4518 173:3423 174:901 175:1353 176:3781 177:4736 178:4320 179:2288 180:2971 181:4352 182:3864 183:2676 184:2039 185:21691 186:5523 187:4775 188:4542 189:4463 190:9667 191:1536 192:11401 193:9513 194:7863 195:5646 196:3253 197:3274 198:6055 199:6109 200:8053 201:6379 202:10482 203:10581 204:4647 205:3700 206:4385 207:3792 208:4342 209:5441 210:4723 211:2681 212:4923 213:4029 214:1064 215:54 216:7098 217:3459 218:1611 219:411 220:2191 221:1298 222:776 223:3249 End of report