IPv4 R&E Routing Table Report 23:05 GMT Thu 18 Sep, 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: 1000212 Prefixes after maximum aggregation (per Origin AS): 388513 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 495009 Number of IPv4 prefixes with a valid ROA: 571138 Number of IPv4 prefixes with an invalid ROA: 914 Number of IPv4 prefixes with no ROA: 428160 Total ASes present in the Internet Routing Table: 77241 Prefixes per ASN: 12.95 Origin-only ASes present in the Internet Routing Table: 66205 Origin ASes announcing only one prefix: 27016 Transit ASes present in the Internet Routing Table: 11036 Transit-only ASes present in the Internet Routing Table: 542 Paths with bogon ASNs present in the IPv4 Routing Table: 28 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 58 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1117 Number of instances of unregistered ASNs: 1148 Number of 32-bit ASNs allocated by the RIRs: 47458 Number of 32-bit ASNs visible in the Routing Table: 38947 Prefixes from 32-bit ASNs in the Routing Table: 210869 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: 432 Number of addresses announced to Internet: 3111379968 Equivalent to 185 /8s, 115 /16s and 228 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 325529 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 268265 Total APNIC prefixes after maximum aggregation: 79111 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 258477 Unique aggregates announced from the APNIC address blocks: 105599 APNIC Region origin ASes present in the Internet Routing Table: 14761 APNIC Prefixes per ASN: 17.51 APNIC Region origin ASes announcing only one prefix: 4464 APNIC Region transit ASes present in the Internet Routing Table: 1987 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: 10331 Number of APNIC addresses announced to Internet: 750388480 Equivalent to 44 /8s, 186 /16s and 5 /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: 292694 Total ARIN prefixes after maximum aggregation: 133722 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 294118 Unique aggregates announced from the ARIN address blocks: 142716 ARIN Region origin ASes present in the Internet Routing Table: 19280 ARIN Prefixes per ASN: 15.26 ARIN Region origin ASes announcing only one prefix: 7074 ARIN Region transit ASes present in the Internet Routing Table: 1935 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 41 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5329 Number of ARIN addresses announced to Internet: 1353169152 Equivalent to 80 /8s, 167 /16s and 185 /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: 278615 Total RIPE prefixes after maximum aggregation: 137922 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277933 Unique aggregates announced from the RIPE address blocks: 180172 RIPE Region origin ASes present in the Internet Routing Table: 29054 RIPE Prefixes per ASN: 9.57 RIPE Region origin ASes announcing only one prefix: 12100 RIPE Region transit ASes present in the Internet Routing Table: 4010 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12706 Number of RIPE addresses announced to Internet: 732567808 Equivalent to 43 /8s, 170 /16s and 25 /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: 124521 Total LACNIC prefixes after maximum aggregation: 30210 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120765 Unique aggregates announced from the LACNIC address blocks: 49453 LACNIC Region origin ASes present in the Internet Routing Table: 11287 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2662 LACNIC Region transit ASes present in the Internet Routing Table: 2524 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9251 Number of LACNIC addresses announced to Internet: 170717952 Equivalent to 10 /8s, 44 /16s and 243 /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: 35000 Total AfriNIC prefixes after maximum aggregation: 6823 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 48487 Unique aggregates announced from the AfriNIC address blocks: 16688 AfriNIC Region origin ASes present in the Internet Routing Table: 1964 AfriNIC Prefixes per ASN: 24.69 AfriNIC Region origin ASes announcing only one prefix: 716 AfriNIC Region transit ASes present in the Internet Routing Table: 380 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1330 Number of AfriNIC addresses announced to Internet: 104301568 Equivalent to 6 /8s, 55 /16s and 132 /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 13503 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6161 837 601 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4475 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4468 536 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3940 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3735 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3300 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3079 828 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 863 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2178 427 182 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 14408 40913 5393 AMAZON-02, US 11492 4737 320 807 CABLEONE, US 22773 3945 3045 315 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3677 1320 81 SHAW, CA 396982 3265 4824 459 GOOGLE-CLOUD-PLATFORM, US 174 3241 8760 863 COGENT-174, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3022 235 1730 USDA-1, US 16625 2914 1236 2171 AKAMAI-AS, 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 7459 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 9009 3926 368 2208 M247, RO 20940 3907 3395 125 AKAMAI-ASN1, NL 12389 3120 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2418 172 1752 CDNEXT, GB 34984 2414 363 573 TELLCOM-AS, TR 203020 1965 230 913 HOSTROYALE, IN 8452 1623 1852 14 TE-AS TE-AS, EG 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 12333 3279 579 UNINET, MX 10620 3493 473 1047 Telmex Colombia S.A., CO 13999 2540 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1225 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1183 371 22 Telefonica del Peru S.A.A., PE 22884 1060 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 2487 55 TIM SA, 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 1820 652 28 RAYA-AS, EG 36992 1507 1498 383 ETISALAT-MISR, EG 29571 1280 102 51 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1247 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 1077 522 45 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 552 82 3 KENET-AS, KE 15399 549 56 54 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 14408 40913 5393 AMAZON-02, US 9808 13503 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12333 3279 579 UNINET, MX 12479 7459 1711 149 UNI2-AS, ES 7545 6161 837 601 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4737 320 807 CABLEONE, US 18403 4475 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4468 536 312 BBIL-AP BHARTI Airtel Ltd., IN 22773 3945 3045 315 ASN-CXA-ALL-CCI-22773-RDC, US 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 13503 13387 CHINAMOBILE-CN China Mobile Communications Grou 8151 12333 11754 UNINET, MX 12479 7459 7310 UNI2-AS, ES 7545 6161 5560 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4475 4449 FPT-AS-AP FPT Telecom Company, VN 9498 4468 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4737 3930 CABLEONE, US 7552 3940 3913 VIETEL-AS-AP Viettel Group, VN 20940 3907 3782 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 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US 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 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /12:298 /13:577 /14:1200 /15:2126 /16:13725 /17:8146 /18:13367 /19:24476 /20:44159 /21:51812 /22:112171 /23:103279 /24:624712 /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 6532 12333 UNINET, MX 12479 6427 7459 UNI2-AS, ES 11492 3552 4737 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3677 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2506 3945 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2450 14408 AMAZON-02, US 30036 2296 2637 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3493 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) ---------------------------------------------- 1:2425 2:1514 3:934 4:10 5:4830 6:164 7:6 8:1541 9:6 11:172 12:1247 13:567 14:2614 15:400 16:303 17:386 18:903 20:572 21:4 22:188 23:7841 24:2656 25:2 27:2793 29:19 31:3362 32:30 33:1 34:84 35:266 36:4382 37:4537 38:9408 39:1073 40:280 41:4336 42:1971 43:2749 44:376 45:18962 46:5115 47:342 49:2018 50:2039 51:594 52:1609 54:373 55:1099 56:11 57:285 58:2268 59:1306 60:1187 61:2914 62:3036 63:1767 64:5622 65:2118 66:4872 67:3095 68:1082 69:3902 70:1038 71:629 72:2887 74:2825 75:1501 76:602 77:2778 78:1899 79:1757 80:2241 81:2078 82:3328 83:1449 84:1963 85:3484 86:1099 87:2128 88:1321 89:4489 90:809 91:8405 92:2787 93:2974 94:4154 95:4433 96:1464 97:312 98:952 99:761 100:71 101:1473 102:4090 103:32918 104:5313 105:777 106:879 107:2658 108:1216 109:4199 110:2252 111:3702 112:2613 113:1862 114:1991 115:2240 116:2095 117:2865 118:3062 119:1956 120:2234 121:1349 122:2788 123:2243 124:1709 125:2921 126:91 128:1565 129:959 130:1278 131:2122 132:781 133:461 134:1614 135:362 136:1485 137:1139 138:2790 139:1597 140:1639 141:1541 142:1912 143:2050 144:1266 145:623 146:2173 147:2111 148:2739 149:2891 150:1284 151:2537 152:2114 153:575 154:7464 155:2046 156:3456 157:2001 158:1433 159:2558 160:3553 161:1964 162:3919 163:2297 164:1909 165:2571 166:1559 167:2081 168:3800 169:776 170:5351 171:1006 172:4236 173:3404 174:902 175:1348 176:3796 177:4731 178:4155 179:2276 180:2750 181:4248 182:3728 183:2600 184:2056 185:21631 186:5406 187:4669 188:4284 189:4343 190:9694 191:1565 192:11381 193:9470 194:7795 195:5566 196:3285 197:3233 198:6095 199:8694 200:8084 201:6340 202:10400 203:10643 204:4553 205:3602 206:4492 207:3514 208:4270 209:5245 210:4705 211:2675 212:4689 213:3847 214:1038 215:52 216:6859 217:3321 218:1503 219:396 220:2148 221:1232 222:750 223:2979 End of report