IPv4 R&E Routing Table Report 23:05 GMT Thu 08 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: 1021313 Prefixes after maximum aggregation (per Origin AS): 393867 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 505719 Number of IPv4 prefixes with a valid ROA: 608664 Number of IPv4 prefixes with an invalid ROA: 581 Number of IPv4 prefixes with no ROA: 412068 Total ASes present in the Internet Routing Table: 77646 Prefixes per ASN: 13.15 Origin-only ASes present in the Internet Routing Table: 66565 Origin ASes announcing only one prefix: 27120 Transit ASes present in the Internet Routing Table: 11081 Transit-only ASes present in the Internet Routing Table: 559 Paths with bogon ASNs present in the IPv4 Routing Table: 40 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: 1054 Number of instances of unregistered ASNs: 1083 Number of 32-bit ASNs allocated by the RIRs: 48308 Number of 32-bit ASNs visible in the Routing Table: 39566 Prefixes from 32-bit ASNs in the Routing Table: 220241 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: 543 Number of addresses announced to Internet: 3104992256 Equivalent to 185 /8s, 18 /16s and 108 /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: 332998 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 277917 Total APNIC prefixes after maximum aggregation: 80993 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 264601 Unique aggregates announced from the APNIC address blocks: 106699 APNIC Region origin ASes present in the Internet Routing Table: 14948 APNIC Prefixes per ASN: 17.70 APNIC Region origin ASes announcing only one prefix: 4536 APNIC Region transit ASes present in the Internet Routing Table: 2008 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: 10534 Number of APNIC addresses announced to Internet: 754157056 Equivalent to 44 /8s, 243 /16s and 134 /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: 299124 Total ARIN prefixes after maximum aggregation: 134777 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299193 Unique aggregates announced from the ARIN address blocks: 145606 ARIN Region origin ASes present in the Internet Routing Table: 19345 ARIN Prefixes per ASN: 15.47 ARIN Region origin ASes announcing only one prefix: 7061 ARIN Region transit ASes present in the Internet Routing Table: 1916 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: 5431 Number of ARIN addresses announced to Internet: 1342933504 Equivalent to 80 /8s, 11 /16s and 138 /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: 281362 Total RIPE prefixes after maximum aggregation: 139617 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282628 Unique aggregates announced from the RIPE address blocks: 183680 RIPE Region origin ASes present in the Internet Routing Table: 29122 RIPE Prefixes per ASN: 9.70 RIPE Region origin ASes announcing only one prefix: 12100 RIPE Region transit ASes present in the Internet Routing Table: 4037 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: 12902 Number of RIPE addresses announced to Internet: 733869312 Equivalent to 43 /8s, 189 /16s and 245 /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: 125473 Total LACNIC prefixes after maximum aggregation: 30853 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121267 Unique aggregates announced from the LACNIC address blocks: 49731 LACNIC Region origin ASes present in the Internet Routing Table: 11325 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2681 LACNIC Region transit ASes present in the Internet Routing Table: 2542 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9326 Number of LACNIC addresses announced to Internet: 170527744 Equivalent to 10 /8s, 42 /16s and 12 /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: 36383 Total AfriNIC prefixes after maximum aggregation: 6921 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 53081 Unique aggregates announced from the AfriNIC address blocks: 19531 AfriNIC Region origin ASes present in the Internet Routing Table: 2011 AfriNIC Prefixes per ASN: 26.40 AfriNIC Region origin ASes announcing only one prefix: 742 AfriNIC Region transit ASes present in the Internet Routing Table: 386 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: 1373 Number of AfriNIC addresses announced to Internet: 103198976 Equivalent to 6 /8s, 38 /16s and 177 /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 13404 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6028 833 574 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4665 543 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4359 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4057 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3410 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3326 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3158 198 619 LCS-AS-AP LARUS Limited, HK 24560 2953 865 498 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 14134 38499 5437 AMAZON-02, US 22773 4775 3099 365 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4631 307 1031 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3696 1321 70 SHAW, CA 396982 3327 4868 495 GOOGLE-CLOUD-PLATFORM, US 749 3142 54729 2393 DNIC-AS-00749, US 174 3047 8770 854 COGENT-174, US 16625 2837 1217 2126 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 7265 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3920 366 2247 M247, RO 20940 3832 3393 110 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2573 183 1870 CDNEXT, GB 34984 2424 372 576 TELLCOM-AS, TR 8452 1709 1852 14 TE-AS TE-AS, EG 203020 1620 243 799 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 12703 3307 595 UNINET, MX 10620 3434 457 1108 Telmex Colombia S.A., CO 13999 2472 506 356 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1376 2433 265 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1217 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1014 2486 56 TIM SA, BR 18881 903 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 1849 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 561 82 3 KENET-AS, KE 328608 558 48 171 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 14134 38499 5437 AMAZON-02, US 9808 13404 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12703 3307 595 UNINET, MX 12479 7265 1711 149 UNI2-AS, ES 7545 6028 833 574 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4775 3099 365 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4665 543 336 BBIL-AP BHARTI Airtel Ltd., IN 11492 4631 307 1031 CABLEONE, US 18403 4359 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 13404 13284 CHINAMOBILE-CN China Mobile Communications Grou 8151 12703 12108 UNINET, MX 12479 7265 7116 UNI2-AS, ES 7545 6028 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 22773 4775 4410 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4359 4335 FPT-AS-AP FPT Telecom Company, VN 9498 4665 4329 BBIL-AP BHARTI Airtel Ltd., IN 7552 4057 4028 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 202485 UNALLOCATED 5.83.128.0/24 49581 FERDINANDZINK, DE 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 /11:94 /12:302 /13:577 /14:1198 /15:2089 /16:13645 /17:8162 /18:13428 /19:24683 /20:44632 /21:51782 /22:112788 /23:105371 /24:642491 /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 6878 12703 UNINET, MX 12479 6196 7265 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3493 4631 CABLEONE, US 6327 3478 3696 SHAW, CA 22773 3046 4775 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2496 14134 AMAZON-02, US 30036 2306 2647 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) ---------------------------------------------- 1:2483 2:1494 3:987 4:9 5:4983 6:187 7:6 8:1507 9:15 11:172 12:1234 13:628 14:2635 15:418 16:275 17:387 18:915 20:592 21:4 22:188 23:8108 24:2622 25:2 27:2804 29:19 31:3395 32:31 34:84 35:287 36:4620 37:4483 38:9918 39:1237 40:437 41:4505 42:1925 43:2975 44:412 45:19684 46:4931 47:395 49:2167 50:2051 51:598 52:1258 54:232 55:1123 56:11 57:309 58:2318 59:1347 60:1171 61:3092 62:3096 63:1767 64:6120 65:2141 66:5994 67:3256 68:1502 69:4197 70:1032 71:616 72:3072 74:2964 75:1517 76:598 77:2759 78:1908 79:1782 80:2287 81:2093 82:3973 83:1470 84:2025 85:3655 86:1100 87:2180 88:1355 89:4630 90:827 91:8416 92:2828 93:3012 94:4230 95:4527 96:1436 97:311 98:959 99:789 100:69 101:1337 102:4342 103:32930 104:5446 105:772 106:924 107:2815 108:1206 109:4249 110:2311 111:4017 112:2926 113:1965 114:2090 115:2262 116:2173 117:3253 118:2989 119:2109 120:2433 121:1507 122:2953 123:2286 124:1654 125:2971 126:125 128:1573 129:959 130:1536 131:2253 132:764 133:461 134:1630 135:541 136:1596 137:1224 138:2972 139:1605 140:1773 141:1562 142:2440 143:2214 144:1429 145:628 146:2185 147:2154 148:2787 149:2914 150:1327 151:2571 152:2252 153:848 154:9501 155:2317 156:4585 157:2251 158:1486 159:2735 160:3678 161:1999 162:3985 163:2328 164:1967 165:2657 166:1307 167:2194 168:3906 169:806 170:5424 171:1117 172:4520 173:3424 174:894 175:1358 176:3756 177:4682 178:4222 179:2284 180:2972 181:4346 182:3880 183:2706 184:2010 185:21663 186:5493 187:4782 188:4616 189:4476 190:9633 191:1526 192:11418 193:9504 194:7842 195:5676 196:3260 197:3276 198:6061 199:6104 200:8021 201:6367 202:10556 203:10570 204:4657 205:3697 206:4351 207:3811 208:4346 209:5444 210:4726 211:2685 212:4924 213:4031 214:1066 215:54 216:7138 217:3445 218:1616 219:414 220:2192 221:1302 222:775 223:3270 End of report