IPv4 R&E Routing Table Report 23:05 GMT Tue 29 Jul, 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: 989622 Prefixes after maximum aggregation (per Origin AS): 383560 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 488087 Number of IPv4 prefixes with a valid ROA: 557698 Number of IPv4 prefixes with an invalid ROA: 633 Number of IPv4 prefixes with no ROA: 431291 Total ASes present in the Internet Routing Table: 76984 Prefixes per ASN: 12.85 Origin-only ASes present in the Internet Routing Table: 65951 Origin ASes announcing only one prefix: 26928 Transit ASes present in the Internet Routing Table: 11033 Transit-only ASes present in the Internet Routing Table: 550 Paths with bogon ASNs present in the IPv4 Routing Table: 33 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 52 Max AS path prepend of ASN ( 37447) 36 Prefixes from unregistered ASNs in the Routing Table: 1158 Number of instances of unregistered ASNs: 1197 Number of 32-bit ASNs allocated by the RIRs: 46966 Number of 32-bit ASNs visible in the Routing Table: 38632 Prefixes from 32-bit ASNs in the Routing Table: 206954 Number of bogon 32-bit ASNs visible in the Routing Table: 94 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 453 Number of addresses announced to Internet: 3107209984 Equivalent to 185 /8s, 52 /16s and 67 /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: 322500 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 263099 Total APNIC prefixes after maximum aggregation: 77906 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 254272 Unique aggregates announced from the APNIC address blocks: 105086 APNIC Region origin ASes present in the Internet Routing Table: 14689 APNIC Prefixes per ASN: 17.31 APNIC Region origin ASes announcing only one prefix: 4464 APNIC Region transit ASes present in the Internet Routing Table: 1993 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: 10255 Number of APNIC addresses announced to Internet: 749232384 Equivalent to 44 /8s, 168 /16s and 97 /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: 290158 Total ARIN prefixes after maximum aggregation: 131931 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291614 Unique aggregates announced from the ARIN address blocks: 141391 ARIN Region origin ASes present in the Internet Routing Table: 19214 ARIN Prefixes per ASN: 15.18 ARIN Region origin ASes announcing only one prefix: 7042 ARIN Region transit ASes present in the Internet Routing Table: 1922 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5254 Number of ARIN addresses announced to Internet: 1349297920 Equivalent to 80 /8s, 108 /16s and 167 /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: 275917 Total RIPE prefixes after maximum aggregation: 136286 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 274912 Unique aggregates announced from the RIPE address blocks: 178056 RIPE Region origin ASes present in the Internet Routing Table: 28953 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12069 RIPE Region transit ASes present in the Internet Routing Table: 4024 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 37 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12587 Number of RIPE addresses announced to Internet: 732200448 Equivalent to 43 /8s, 164 /16s and 126 /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: 124747 Total LACNIC prefixes after maximum aggregation: 29872 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 121050 Unique aggregates announced from the LACNIC address blocks: 49128 LACNIC Region origin ASes present in the Internet Routing Table: 11270 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2652 LACNIC Region transit ASes present in the Internet Routing Table: 2513 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9233 Number of LACNIC addresses announced to Internet: 171141120 Equivalent to 10 /8s, 51 /16s and 104 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 34543 Total AfriNIC prefixes after maximum aggregation: 6802 AfriNIC Deaggregation factor: 5.08 Prefixes being announced from the AfriNIC address blocks: 47321 Unique aggregates announced from the AfriNIC address blocks: 14046 AfriNIC Region origin ASes present in the Internet Routing Table: 1938 AfriNIC Prefixes per ASN: 24.42 AfriNIC Region origin ASes announcing only one prefix: 701 AfriNIC Region transit ASes present in the Internet Routing Table: 376 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 41 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1303 Number of AfriNIC addresses announced to Internet: 105086976 Equivalent to 6 /8s, 67 /16s and 128 /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 12157 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6138 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4534 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3910 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3682 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3292 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2911 864 509 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2818 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2179 427 185 TATACOMM-AS TATA Communications formerly 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 13657 40974 5277 AMAZON-02, US 11492 4820 319 606 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3516 8771 859 COGENT-174, US 22773 3340 3030 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3198 3856 434 GOOGLE-CLOUD-PLATFORM, US 16625 2926 1237 2183 AKAMAI-AS, US 4155 2875 218 1742 USDA-1, 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 7585 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3908 3395 123 AKAMAI-ASN1, NL 9009 3827 363 2143 M247, RO 12389 3116 2315 869 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 583 TELLCOM-AS, TR 212238 2317 164 1685 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1579 1852 14 TE-AS TE-AS, EG 203020 1523 191 672 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 12273 3259 580 UNINET, MX 10620 3479 473 1035 Telmex Colombia S.A., CO 13999 2521 511 357 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1371 2435 269 Claro NXT Telecomunicacoes Ltda, BR 3816 1351 788 208 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1187 371 22 Telefonica del Peru S.A.A., PE 11664 1072 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1069 68 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1022 373 162 Axtel, S.A.B. de C.V., MX 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 1709 660 28 RAYA-AS, EG 29571 1605 102 51 ORANGE-COTE-IVOIRE, CI 36992 1318 1490 359 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1231 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 887 520 43 Vodafone-, EG 36914 571 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 532 56 53 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 13657 40974 5277 AMAZON-02, US 8151 12273 3259 580 UNINET, MX 9808 12157 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7585 1712 148 UNI2-AS, ES 7545 6138 837 623 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4820 319 606 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4534 348 27 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3910 1332 27 VIETEL-AS-AP Viettel Group, 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 12157 12041 CHINAMOBILE-CN China Mobile Communications Grou 8151 12273 11693 UNINET, MX 12479 7585 7437 UNI2-AS, ES 7545 6138 5515 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4534 4507 FPT-AS-AP FPT Telecom Company, VN 11492 4820 4214 CABLEONE, US 9498 4464 4153 BBIL-AP BHARTI Airtel Ltd., IN 7552 3910 3883 VIETEL-AS-AP Viettel Group, VN 20940 3908 3785 AKAMAI-ASN1, NL 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 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /11:92 /12:298 /13:577 /14:1199 /15:2129 /16:13756 /17:8166 /18:13420 /19:24435 /20:43834 /21:51515 /22:111690 /23:102491 /24:615949 /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 12479 6536 7585 UNI2-AS, ES 8151 6492 12273 UNINET, MX 11492 3612 4820 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2814 3855 VIASAT-SP-BACKBONE, US 22773 2491 3340 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2356 13657 AMAZON-02, US 30036 2288 2629 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2195 3479 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) ---------------------------------------------- 1:2422 2:1491 3:848 4:10 5:4744 6:163 7:6 8:1550 9:2 11:172 12:1341 13:456 14:2574 15:367 16:286 17:376 18:897 20:560 21:4 22:188 23:7712 24:2674 25:2 27:2787 29:19 31:3338 32:35 33:1 34:83 35:258 36:3909 37:4560 38:9489 39:943 40:247 41:4253 42:2018 43:2733 44:373 45:18737 46:5080 47:336 49:1898 50:2006 51:586 52:1554 54:325 55:1063 56:11 57:271 58:2205 59:1301 60:1171 61:2825 62:2976 63:1785 64:5518 65:2148 66:4717 67:3093 68:1070 69:3876 70:1040 71:621 72:2848 74:2791 75:1503 76:604 77:2774 78:1896 79:1697 80:2197 81:2051 82:3166 83:1437 84:1883 85:3477 86:1092 87:2121 88:1305 89:4433 90:776 91:8411 92:2707 93:2953 94:4060 95:4387 96:1448 97:309 98:955 99:693 100:71 101:1445 102:3891 103:32860 104:5240 105:804 106:972 107:2661 108:1265 109:4176 110:2241 111:3355 112:2299 113:1853 114:1961 115:2197 116:2086 117:2633 118:2981 119:1938 120:2176 121:1325 122:2786 123:2233 124:1704 125:2898 126:91 128:1578 129:955 130:1295 131:2048 132:772 133:450 134:1594 135:351 136:1460 137:1131 138:2832 139:1589 140:1629 141:1516 142:1910 143:1963 144:1172 145:565 146:2176 147:2098 148:2724 149:2939 150:1294 151:2247 152:2069 153:524 154:7588 155:1850 156:3072 157:1956 158:1356 159:2514 160:3603 161:1887 162:3860 163:2241 164:1876 165:2406 166:1536 167:2008 168:3979 169:781 170:5133 171:999 172:4230 173:3387 174:915 175:1327 176:3733 177:4842 178:3932 179:2320 180:2728 181:4132 182:3527 183:2300 184:2062 185:21570 186:5275 187:4684 188:4264 189:4332 190:9570 191:1510 192:11303 193:9469 194:7772 195:5584 196:3230 197:3173 198:6085 199:8593 200:8141 201:6402 202:10393 203:10642 204:4633 205:3558 206:4474 207:3515 208:4261 209:5125 210:4640 211:2604 212:4547 213:3802 214:1024 215:48 216:6744 217:3227 218:1373 219:397 220:2147 221:1199 222:738 223:2720 End of report