IPv4 R&E Routing Table Report 23:00 GMT Wed 28 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: 1027863 Prefixes after maximum aggregation (per Origin AS): 395447 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 507563 Number of IPv4 prefixes with a valid ROA: 614637 Number of IPv4 prefixes with an invalid ROA: 577 Number of IPv4 prefixes with no ROA: 412649 Total ASes present in the Internet Routing Table: 77767 Prefixes per ASN: 13.22 Origin-only ASes present in the Internet Routing Table: 66652 Origin ASes announcing only one prefix: 27180 Transit ASes present in the Internet Routing Table: 11115 Transit-only ASes present in the Internet Routing Table: 568 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: 209 Max AS path prepend of ASN (214570) 200 Prefixes from unregistered ASNs in the Routing Table: 1065 Number of instances of unregistered ASNs: 1094 Number of 32-bit ASNs allocated by the RIRs: 48515 Number of 32-bit ASNs visible in the Routing Table: 39698 Prefixes from 32-bit ASNs in the Routing Table: 221516 Number of bogon 32-bit ASNs visible in the Routing Table: 76 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 459 Number of addresses announced to Internet: 3106146304 Equivalent to 185 /8s, 36 /16s and 8 /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: 334616 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 280816 Total APNIC prefixes after maximum aggregation: 81845 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 267044 Unique aggregates announced from the APNIC address blocks: 107047 APNIC Region origin ASes present in the Internet Routing Table: 14991 APNIC Prefixes per ASN: 17.81 APNIC Region origin ASes announcing only one prefix: 4565 APNIC Region transit ASes present in the Internet Routing Table: 2001 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10569 Number of APNIC addresses announced to Internet: 753755136 Equivalent to 44 /8s, 237 /16s and 100 /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: 300942 Total ARIN prefixes after maximum aggregation: 135295 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300726 Unique aggregates announced from the ARIN address blocks: 146131 ARIN Region origin ASes present in the Internet Routing Table: 19365 ARIN Prefixes per ASN: 15.53 ARIN Region origin ASes announcing only one prefix: 7084 ARIN Region transit ASes present in the Internet Routing Table: 1914 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: 5448 Number of ARIN addresses announced to Internet: 1344254720 Equivalent to 80 /8s, 31 /16s and 179 /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: 282641 Total RIPE prefixes after maximum aggregation: 140043 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284687 Unique aggregates announced from the RIPE address blocks: 185082 RIPE Region origin ASes present in the Internet Routing Table: 29163 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12111 RIPE Region transit ASes present in the Internet Routing Table: 4065 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: 12952 Number of RIPE addresses announced to Internet: 733781504 Equivalent to 43 /8s, 188 /16s and 158 /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: 125881 Total LACNIC prefixes after maximum aggregation: 30635 LACNIC Deaggregation factor: 4.11 Prefixes being announced from the LACNIC address blocks: 121686 Unique aggregates announced from the LACNIC address blocks: 49322 LACNIC Region origin ASes present in the Internet Routing Table: 11351 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2679 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: 9354 Number of LACNIC addresses announced to Internet: 170732288 Equivalent to 10 /8s, 45 /16s and 43 /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: 36518 Total AfriNIC prefixes after maximum aggregation: 6941 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 53261 Unique aggregates announced from the AfriNIC address blocks: 19591 AfriNIC Region origin ASes present in the Internet Routing Table: 2009 AfriNIC Prefixes per ASN: 26.51 AfriNIC Region origin ASes announcing only one prefix: 741 AfriNIC Region transit ASes present in the Internet Routing Table: 384 Average AfriNIC Region AS path length visible: 5.2 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1375 Number of AfriNIC addresses announced to Internet: 103340032 Equivalent to 6 /8s, 40 /16s and 216 /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 13540 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6020 833 570 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4710 543 338 BBIL-AP BHARTI Airtel Ltd., IN 18403 4445 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4035 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3728 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3422 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3326 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3138 197 613 LCS-AS-AP LARUS Limited, HK 24560 2963 865 501 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 14016 38807 5442 AMAZON-02 - Amazon.com, Inc., US 22773 4779 3100 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4639 308 1019 CABLEONE - CABLE ONE, INC., US 7155 3858 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3699 1321 71 SHAW - Shaw Communications, CA 174 3628 8768 857 COGENT-174 - Cogent Communications, LLC, 396982 3324 4866 498 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3142 54729 2393 DNIC-AS-00749 - United States Department 16625 2817 1209 2121 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2702 222 893 AS-COLOCROSSING - HostPapa, 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 7231 1711 149 UNI2-AS, ES 39891 4901 302 71 ALJAWWALSTC-AS, SA 9009 3903 365 2229 M247, RO 20940 3827 3393 111 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2564 182 1863 CDNEXT, GB 34984 2425 364 577 TELLCOM-AS, TR 8452 1711 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1592 241 766 HOSTROYALE, IN 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 12678 3314 607 UNINET, MX 10620 3292 433 1195 Telmex Colombia S.A., CO 13999 2469 506 355 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1259 371 22 INTEGRATEL PERU S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, BR 18881 914 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 1983 646 33 RAYA-AS, EG 36992 1843 1532 339 ETISALAT-MISR, EG 24863 1283 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1146 524 47 Vodafone-, EG 37069 1117 1112 11 MOBINIL, EG 29571 1070 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 328608 563 48 174 Africa-on-Cloud-AS, ZA 36914 560 82 3 KENET-AS, 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 14016 38807 5442 AMAZON-02 - Amazon.com, Inc., US 9808 13540 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12678 3314 607 UNINET, MX 12479 7231 1711 149 UNI2-AS, ES 7545 6020 833 570 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 302 71 ALJAWWALSTC-AS, SA 22773 4779 3100 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 9498 4710 543 338 BBIL-AP BHARTI Airtel Ltd., IN 11492 4639 308 1019 CABLEONE - CABLE ONE, INC., US 18403 4445 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 13540 13420 CHINAMOBILE-CN China Mobile Communications Grou 8151 12678 12071 UNINET, MX 12479 7231 7082 UNI2-AS, ES 7545 6020 5450 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 4830 ALJAWWALSTC-AS, SA 18403 4445 4421 FPT-AS-AP FPT Telecom Company, VN 22773 4779 4414 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 9498 4710 4372 BBIL-AP BHARTI Airtel Ltd., IN 7552 4035 4006 VIETEL-AS-AP Viettel Group, VN 7155 3858 3773 VIASAT-SP-BACKBONE - ViaSat,Inc., 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 - C 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3 - Level 3 Parent 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 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, 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 /10:40 /11:93 /12:302 /13:578 /14:1195 /15:2088 /16:13668 /17:8195 /18:13487 /19:24740 /20:45071 /21:52109 /22:113197 /23:106105 /24:646965 /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 12678 UNINET, MX 12479 6159 7231 UNI2-AS, ES 39891 3651 4901 ALJAWWALSTC-AS, SA 11492 3499 4639 CABLEONE - CABLE ONE, INC., US 6327 3479 3699 SHAW - Shaw Communications, CA 22773 3049 4779 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2817 3858 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2475 14016 AMAZON-02 - Amazon.com, Inc., US 30036 2311 2655 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2146 3292 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) ---------------------------------------------- 1:2512 2:1520 3:979 4:9 5:5083 6:185 7:6 8:1492 9:14 11:172 12:1226 13:620 14:2638 15:420 16:179 17:392 18:918 20:597 21:4 22:188 23:8120 24:2627 25:2 27:2808 29:19 31:3432 32:31 34:84 35:291 36:4662 37:4504 38:10311 39:1255 40:438 41:4495 42:1972 43:2994 44:416 45:19795 46:4922 47:400 48:38 49:2189 50:2054 51:598 52:1255 54:238 55:1124 56:11 57:310 58:2337 59:1351 60:1172 61:3138 62:3101 63:1763 64:6196 65:2115 66:5998 67:3254 68:1489 69:4207 70:1035 71:616 72:3093 74:2967 75:1515 76:605 77:2755 78:1926 79:1802 80:2305 81:2148 82:4026 83:1465 84:2019 85:3691 86:1104 87:2243 88:1338 89:4667 90:822 91:8406 92:2860 93:3009 94:4288 95:4547 96:1443 97:312 98:947 99:784 100:69 101:1581 102:4367 103:32945 104:5402 105:795 106:918 107:2833 108:1221 109:4198 110:2309 111:4059 112:3128 113:1982 114:2163 115:2255 116:2180 117:3333 118:3003 119:2107 120:2666 121:1509 122:2959 123:2289 124:1660 125:2986 126:125 128:1646 129:931 130:1557 131:2336 132:761 133:461 134:1617 135:539 136:1631 137:1351 138:2959 139:1613 140:1769 141:1565 142:2475 143:2161 144:1598 145:632 146:2195 147:2277 148:2787 149:2946 150:1334 151:2657 152:2269 153:855 154:9654 155:2289 156:4576 157:2246 158:1501 159:2752 160:3657 161:2000 162:4034 163:2334 164:1971 165:2645 166:1288 167:2210 168:3929 169:905 170:5484 171:1108 172:4560 173:3432 174:889 175:1369 176:3773 177:4730 178:4344 179:2285 180:3123 181:4368 182:3913 183:2823 184:2011 185:21669 186:5542 187:4852 188:4624 189:4478 190:9659 191:1528 192:11421 193:9494 194:7814 195:5635 196:3263 197:3325 198:6055 199:6096 200:8041 201:6390 202:10597 203:10605 204:4696 205:3709 206:4399 207:3805 208:4360 209:5401 210:4744 211:2689 212:4957 213:4040 214:1069 215:54 216:7140 217:3467 218:1624 219:421 220:2191 221:1311 222:921 223:3304 End of report