IPv4 R&E Routing Table Report 23:05 GMT Thu 24 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: 988692 Prefixes after maximum aggregation (per Origin AS): 382957 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 487281 Number of IPv4 prefixes with a valid ROA: 556480 Number of IPv4 prefixes with an invalid ROA: 589 Number of IPv4 prefixes with no ROA: 431623 Total ASes present in the Internet Routing Table: 76954 Prefixes per ASN: 12.85 Origin-only ASes present in the Internet Routing Table: 65944 Origin ASes announcing only one prefix: 26943 Transit ASes present in the Internet Routing Table: 11010 Transit-only ASes present in the Internet Routing Table: 540 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: 1175 Number of instances of unregistered ASNs: 1213 Number of 32-bit ASNs allocated by the RIRs: 46895 Number of 32-bit ASNs visible in the Routing Table: 38589 Prefixes from 32-bit ASNs in the Routing Table: 206422 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: 455 Number of addresses announced to Internet: 3107111168 Equivalent to 185 /8s, 50 /16s and 193 /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: 322169 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 263050 Total APNIC prefixes after maximum aggregation: 77892 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 254046 Unique aggregates announced from the APNIC address blocks: 105075 APNIC Region origin ASes present in the Internet Routing Table: 14689 APNIC Prefixes per ASN: 17.29 APNIC Region origin ASes announcing only one prefix: 4477 APNIC Region transit ASes present in the Internet Routing Table: 1979 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10245 Number of APNIC addresses announced to Internet: 749264640 Equivalent to 44 /8s, 168 /16s and 223 /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: 289898 Total ARIN prefixes after maximum aggregation: 131759 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291563 Unique aggregates announced from the ARIN address blocks: 141267 ARIN Region origin ASes present in the Internet Routing Table: 19208 ARIN Prefixes per ASN: 15.18 ARIN Region origin ASes announcing only one prefix: 7041 ARIN Region transit ASes present in the Internet Routing Table: 1925 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: 5249 Number of ARIN addresses announced to Internet: 1349309952 Equivalent to 80 /8s, 108 /16s and 214 /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: 275790 Total RIPE prefixes after maximum aggregation: 135959 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274783 Unique aggregates announced from the RIPE address blocks: 177445 RIPE Region origin ASes present in the Internet Routing Table: 28949 RIPE Prefixes per ASN: 9.49 RIPE Region origin ASes announcing only one prefix: 12068 RIPE Region transit ASes present in the Internet Routing Table: 4011 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 33 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12573 Number of RIPE addresses announced to Internet: 732140032 Equivalent to 43 /8s, 163 /16s and 146 /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: 124220 Total LACNIC prefixes after maximum aggregation: 29806 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 120541 Unique aggregates announced from the LACNIC address blocks: 49085 LACNIC Region origin ASes present in the Internet Routing Table: 11261 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2658 LACNIC Region transit ASes present in the Internet Routing Table: 2512 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: 9223 Number of LACNIC addresses announced to Internet: 171128320 Equivalent to 10 /8s, 51 /16s and 54 /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: 34559 Total AfriNIC prefixes after maximum aggregation: 6772 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 47304 Unique aggregates announced from the AfriNIC address blocks: 14026 AfriNIC Region origin ASes present in the Internet Routing Table: 1934 AfriNIC Prefixes per ASN: 24.46 AfriNIC Region origin ASes announcing only one prefix: 699 AfriNIC Region transit ASes present in the Internet Routing Table: 379 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: 1299 Number of AfriNIC addresses announced to Internet: 105015808 Equivalent to 6 /8s, 66 /16s and 106 /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 12041 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6139 840 619 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4507 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3696 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3290 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2910 863 511 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2818 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2181 429 189 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 13678 40975 5284 AMAZON-02, US 11492 4819 319 605 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3514 8771 860 COGENT-174, US 22773 3342 3032 167 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3197 3856 433 GOOGLE-CLOUD-PLATFORM, US 16625 2929 1238 2180 AKAMAI-AS, US 4155 2868 217 1733 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 7588 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3920 3395 123 AKAMAI-ASN1, NL 9009 3813 362 2130 M247, RO 12389 3116 2315 869 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 583 TELLCOM-AS, TR 212238 2318 164 1687 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1580 1852 14 TE-AS TE-AS, EG 203020 1517 183 662 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 12309 3259 576 UNINET, MX 10620 3486 474 1026 Telmex Colombia S.A., CO 13999 2525 511 349 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1371 2435 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1348 787 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1197 371 22 Telefonica del Peru S.A.A., PE 11664 1070 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1067 68 369 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1017 372 160 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 1729 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1313 1489 356 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1221 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 832 520 43 Vodafone-, EG 36914 581 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 13678 40975 5284 AMAZON-02, US 8151 12309 3259 576 UNINET, MX 9808 12041 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7588 1712 148 UNI2-AS, ES 7545 6139 840 619 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4819 319 605 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4507 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4464 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3920 3395 123 AKAMAI-ASN1, NL 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 12041 11925 CHINAMOBILE-CN China Mobile Communications Grou 8151 12309 11733 UNINET, MX 12479 7588 7440 UNI2-AS, ES 7545 6139 5520 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4507 4481 FPT-AS-AP FPT Telecom Company, VN 11492 4819 4214 CABLEONE, US 9498 4464 4153 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 3891 VIETEL-AS-AP Viettel Group, VN 20940 3920 3797 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 /14:1200 /15:2125 /16:13755 /17:8163 /18:13434 /19:24421 /20:43802 /21:51512 /22:111628 /23:102517 /24:615097 /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 6537 7588 UNI2-AS, ES 8151 6529 12309 UNINET, MX 11492 3611 4819 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2814 3855 VIASAT-SP-BACKBONE, US 22773 2492 3342 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2359 13678 AMAZON-02, US 30036 2283 2624 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2197 3486 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) ---------------------------------------------- 1:2418 2:1486 3:855 4:10 5:4758 6:163 7:6 8:1554 9:2 11:172 12:1340 13:463 14:2574 15:366 16:286 17:375 18:897 20:559 21:4 22:188 23:7707 24:2676 25:2 27:2793 29:19 31:3353 32:35 33:1 34:83 35:257 36:3831 37:4553 38:9492 39:940 40:248 41:4236 42:1991 43:2738 44:374 45:18641 46:5078 47:336 49:1897 50:2004 51:591 52:1549 54:323 55:1111 56:11 57:272 58:2208 59:1301 60:1171 61:2826 62:2973 63:1790 64:5525 65:2163 66:4709 67:3091 68:1070 69:3856 70:1037 71:620 72:2851 74:2786 75:1504 76:605 77:2761 78:1898 79:1693 80:2200 81:2040 82:3168 83:1435 84:1886 85:3462 86:1091 87:2123 88:1309 89:4406 90:777 91:8390 92:2707 93:2949 94:4074 95:4394 96:1440 97:310 98:954 99:695 100:71 101:1444 102:3899 103:32843 104:5206 105:795 106:971 107:2654 108:1262 109:4184 110:2242 111:3340 112:2285 113:1852 114:1966 115:2214 116:2086 117:2622 118:2978 119:1937 120:2170 121:1326 122:2788 123:2231 124:1702 125:2898 126:91 128:1583 129:963 130:1292 131:2026 132:767 133:450 134:1584 135:351 136:1459 137:1125 138:2821 139:1584 140:1631 141:1507 142:1911 143:1947 144:1189 145:561 146:2173 147:2095 148:2711 149:2933 150:1286 151:2227 152:2065 153:524 154:7536 155:1846 156:3071 157:1951 158:1349 159:2513 160:3606 161:1887 162:3850 163:2242 164:1869 165:2378 166:1522 167:2018 168:3963 169:780 170:5118 171:999 172:4219 173:3396 174:917 175:1328 176:3728 177:4692 178:3927 179:2292 180:2723 181:4125 182:3531 183:2304 184:2063 185:21554 186:5226 187:4646 188:4268 189:4355 190:9558 191:1495 192:11314 193:9466 194:7756 195:5571 196:3275 197:3206 198:6079 199:8611 200:8079 201:6390 202:10402 203:10651 204:4638 205:3595 206:4470 207:3513 208:4272 209:5118 210:4600 211:2599 212:4545 213:3808 214:1023 215:48 216:6738 217:3222 218:1371 219:396 220:2148 221:1196 222:742 223:2722 End of report