IPv4 R&E Routing Table Report 23:05 GMT Mon 05 Jan, 2026 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: 1021830 Prefixes after maximum aggregation (per Origin AS): 393765 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 506035 Number of IPv4 prefixes with a valid ROA: 609040 Number of IPv4 prefixes with an invalid ROA: 616 Number of IPv4 prefixes with no ROA: 412174 Total ASes present in the Internet Routing Table: 77621 Prefixes per ASN: 13.16 Origin-only ASes present in the Internet Routing Table: 66526 Origin ASes announcing only one prefix: 27101 Transit ASes present in the Internet Routing Table: 11095 Transit-only ASes present in the Internet Routing Table: 563 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: 209 Max AS path prepend of ASN (214570) 200 Prefixes from unregistered ASNs in the Routing Table: 963 Number of instances of unregistered ASNs: 992 Number of 32-bit ASNs allocated by the RIRs: 48318 Number of 32-bit ASNs visible in the Routing Table: 39525 Prefixes from 32-bit ASNs in the Routing Table: 220242 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: 515 Number of addresses announced to Internet: 3104651264 Equivalent to 185 /8s, 13 /16s and 56 /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: 333944 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277581 Total APNIC prefixes after maximum aggregation: 80918 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 264308 Unique aggregates announced from the APNIC address blocks: 106578 APNIC Region origin ASes present in the Internet Routing Table: 14924 APNIC Prefixes per ASN: 17.71 APNIC Region origin ASes announcing only one prefix: 4515 APNIC Region transit ASes present in the Internet Routing Table: 2009 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: 10510 Number of APNIC addresses announced to Internet: 753009664 Equivalent to 44 /8s, 226 /16s and 4 /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: 298776 Total ARIN prefixes after maximum aggregation: 134580 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298994 Unique aggregates announced from the ARIN address blocks: 145686 ARIN Region origin ASes present in the Internet Routing Table: 19354 ARIN Prefixes per ASN: 15.45 ARIN Region origin ASes announcing only one prefix: 7066 ARIN Region transit ASes present in the Internet Routing Table: 1921 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: 5419 Number of ARIN addresses announced to Internet: 1342613760 Equivalent to 80 /8s, 6 /16s and 169 /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: 282518 Total RIPE prefixes after maximum aggregation: 139852 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283594 Unique aggregates announced from the RIPE address blocks: 184058 RIPE Region origin ASes present in the Internet Routing Table: 29126 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12093 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: 209 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12891 Number of RIPE addresses announced to Internet: 735080192 Equivalent to 43 /8s, 208 /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: 125669 Total LACNIC prefixes after maximum aggregation: 30846 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121458 Unique aggregates announced from the LACNIC address blocks: 49769 LACNIC Region origin ASes present in the Internet Routing Table: 11335 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2691 LACNIC Region transit ASes present in the Internet Routing Table: 2546 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: 9337 Number of LACNIC addresses announced to Internet: 170485760 Equivalent to 10 /8s, 41 /16s and 104 /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: 36323 Total AfriNIC prefixes after maximum aggregation: 6921 AfriNIC Deaggregation factor: 5.25 Prefixes being announced from the AfriNIC address blocks: 52961 Unique aggregates announced from the AfriNIC address blocks: 19504 AfriNIC Region origin ASes present in the Internet Routing Table: 2003 AfriNIC Prefixes per ASN: 26.44 AfriNIC Region origin ASes announcing only one prefix: 736 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: 1368 Number of AfriNIC addresses announced to Internet: 103165952 Equivalent to 6 /8s, 38 /16s and 48 /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 13385 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6030 833 576 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4658 542 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4351 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4056 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3728 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 3116 196 614 LCS-AS-AP LARUS Limited, HK 24560 2958 865 497 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 14043 38463 5417 AMAZON-02, US 22773 4748 3098 374 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4694 311 938 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3689 1320 82 SHAW, CA 396982 3321 4867 493 GOOGLE-CLOUD-PLATFORM, US 749 3143 54729 2394 DNIC-AS-00749, US 174 3031 8770 857 COGENT-174, US 16625 2850 1220 2133 AKAMAI-AS, US 36352 2705 222 888 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 7277 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3949 369 2273 M247, RO 20940 3830 3393 110 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2567 182 1866 CDNEXT, GB 34984 2421 371 574 TELLCOM-AS, TR 8452 1710 1852 14 TE-AS TE-AS, EG 203020 1614 241 782 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 12656 3293 592 UNINET, MX 10620 3433 457 1107 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 1371 2432 267 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1261 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 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 1848 1534 341 ETISALAT-MISR, EG 24863 1266 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1109 523 46 Vodafone-, EG 37069 1100 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 558 82 3 KENET-AS, KE 328608 550 47 168 Africa-on-Cloud-AS, ZA 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 14043 38463 5417 AMAZON-02, US 9808 13385 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12656 3293 592 UNINET, MX 12479 7277 1711 149 UNI2-AS, ES 7545 6030 833 576 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 4694 311 938 CABLEONE, US 9498 4658 542 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4351 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 13385 13265 CHINAMOBILE-CN China Mobile Communications Grou 8151 12656 12064 UNINET, MX 12479 7277 7128 UNI2-AS, ES 7545 6030 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4748 4374 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4351 4327 FPT-AS-AP FPT Telecom Company, VN 9498 4658 4322 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 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 /13:577 /14:1197 /15:2089 /16:13649 /17:8168 /18:13440 /19:24717 /20:44704 /21:51936 /22:112899 /23:105628 /24:642363 /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 6858 12656 UNINET, MX 12479 6208 7277 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3539 4694 CABLEONE, US 6327 3477 3689 SHAW, CA 22773 3053 4748 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2489 14043 AMAZON-02, US 30036 2304 2645 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) ---------------------------------------------- 1:2465 2:1521 3:980 4:10 5:4994 6:186 7:6 8:1507 9:15 11:172 12:1234 13:604 14:2634 15:418 16:275 17:386 18:913 20:591 21:4 22:188 23:8095 24:2631 25:2 27:2800 29:19 31:3391 32:31 33:1 34:84 35:287 36:4638 37:4512 38:9899 39:1223 40:437 41:4495 42:1909 43:2959 44:410 45:19680 46:4974 47:396 49:2164 50:2053 51:598 52:1249 54:229 55:1112 56:11 57:304 58:2317 59:1350 60:1171 61:3089 62:3107 63:1764 64:6122 65:2139 66:5993 67:3259 68:1503 69:4206 70:1032 71:615 72:3071 74:2958 75:1517 76:600 77:2755 78:1926 79:1788 80:2302 81:2094 82:3939 83:1470 84:2027 85:3668 86:1101 87:2192 88:1358 89:4630 90:833 91:8420 92:2825 93:3018 94:4270 95:4543 96:1441 97:311 98:957 99:791 100:69 101:1332 102:4328 103:32895 104:5459 105:785 106:921 107:2814 108:1206 109:4253 110:2310 111:4005 112:2921 113:1969 114:2095 115:2265 116:2174 117:3247 118:2988 119:2104 120:2422 121:1505 122:2950 123:2290 124:1653 125:2967 126:125 128:1565 129:943 130:1539 131:2266 132:758 133:461 134:1624 135:539 136:1545 137:1213 138:2978 139:1601 140:1774 141:1558 142:2441 143:2118 144:1407 145:630 146:2187 147:2142 148:2787 149:2910 150:1337 151:2589 152:2245 153:847 154:9501 155:2308 156:4538 157:2247 158:1484 159:2732 160:3661 161:1995 162:3985 163:2329 164:1963 165:2649 166:1304 167:2194 168:3885 169:806 170:5457 171:1117 172:4514 173:3422 174:900 175:1355 176:3785 177:4741 178:4221 179:2292 180:2973 181:4356 182:3871 183:2677 184:2039 185:21701 186:5500 187:4783 188:4615 189:4469 190:9662 191:1537 192:11409 193:9508 194:7848 195:5630 196:3253 197:3286 198:6057 199:6107 200:8021 201:6382 202:10544 203:10582 204:4663 205:3708 206:4374 207:3816 208:4354 209:5435 210:4725 211:2682 212:4931 213:4039 214:1063 215:54 216:7110 217:3449 218:1614 219:412 220:2192 221:1299 222:775 223:3249 End of report