IPv4 R&E Routing Table Report 23:05 GMT Fri 29 Aug, 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: 995090 Prefixes after maximum aggregation (per Origin AS): 386782 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 492356 Number of IPv4 prefixes with a valid ROA: 565709 Number of IPv4 prefixes with an invalid ROA: 762 Number of IPv4 prefixes with no ROA: 428619 Total ASes present in the Internet Routing Table: 77142 Prefixes per ASN: 12.90 Origin-only ASes present in the Internet Routing Table: 66086 Origin ASes announcing only one prefix: 26996 Transit ASes present in the Internet Routing Table: 11056 Transit-only ASes present in the Internet Routing Table: 548 Paths with bogon ASNs present in the IPv4 Routing Table: 31 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1125 Number of instances of unregistered ASNs: 1166 Number of 32-bit ASNs allocated by the RIRs: 47284 Number of 32-bit ASNs visible in the Routing Table: 38827 Prefixes from 32-bit ASNs in the Routing Table: 209291 Number of bogon 32-bit ASNs visible in the Routing Table: 96 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 448 Number of addresses announced to Internet: 3107175168 Equivalent to 185 /8s, 51 /16s and 187 /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: 323988 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 265891 Total APNIC prefixes after maximum aggregation: 78738 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256342 Unique aggregates announced from the APNIC address blocks: 105196 APNIC Region origin ASes present in the Internet Routing Table: 14726 APNIC Prefixes per ASN: 17.41 APNIC Region origin ASes announcing only one prefix: 4463 APNIC Region transit ASes present in the Internet Routing Table: 1994 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: 10295 Number of APNIC addresses announced to Internet: 750035712 Equivalent to 44 /8s, 180 /16s and 163 /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: 291236 Total ARIN prefixes after maximum aggregation: 132903 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293346 Unique aggregates announced from the ARIN address blocks: 142363 ARIN Region origin ASes present in the Internet Routing Table: 19249 ARIN Prefixes per ASN: 15.24 ARIN Region origin ASes announcing only one prefix: 7065 ARIN Region transit ASes present in the Internet Routing Table: 1917 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5301 Number of ARIN addresses announced to Internet: 1349499648 Equivalent to 80 /8s, 111 /16s and 187 /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: 277842 Total RIPE prefixes after maximum aggregation: 137357 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277065 Unique aggregates announced from the RIPE address blocks: 179399 RIPE Region origin ASes present in the Internet Routing Table: 29032 RIPE Prefixes per ASN: 9.54 RIPE Region origin ASes announcing only one prefix: 12101 RIPE Region transit ASes present in the Internet Routing Table: 4028 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: 12668 Number of RIPE addresses announced to Internet: 732206848 Equivalent to 43 /8s, 164 /16s and 151 /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: 124113 Total LACNIC prefixes after maximum aggregation: 30272 LACNIC Deaggregation factor: 4.10 Prefixes being announced from the LACNIC address blocks: 120363 Unique aggregates announced from the LACNIC address blocks: 49519 LACNIC Region origin ASes present in the Internet Routing Table: 11282 LACNIC Prefixes per ASN: 10.67 LACNIC Region origin ASes announcing only one prefix: 2650 LACNIC Region transit ASes present in the Internet Routing Table: 2543 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: 9243 Number of LACNIC addresses announced to Internet: 170719232 Equivalent to 10 /8s, 44 /16s and 248 /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: 34883 Total AfriNIC prefixes after maximum aggregation: 6782 AfriNIC Deaggregation factor: 5.14 Prefixes being announced from the AfriNIC address blocks: 47526 Unique aggregates announced from the AfriNIC address blocks: 15492 AfriNIC Region origin ASes present in the Internet Routing Table: 1955 AfriNIC Prefixes per ASN: 24.31 AfriNIC Region origin ASes announcing only one prefix: 717 AfriNIC Region transit ASes present in the Internet Routing Table: 378 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1320 Number of AfriNIC addresses announced to Internet: 104469760 Equivalent to 6 /8s, 58 /16s and 21 /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 12918 8729 114 CHINAMOBILE-CN China Mobile Communication 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4396 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3943 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3664 1044 68 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2979 812 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2916 864 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2175 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 14093 40854 5383 AMAZON-02, US 11492 4744 315 801 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3651 1320 82 SHAW, CA 22773 3351 3034 180 ASN-CXA-ALL-CCI-22773-RDC, US 749 3221 54766 2472 DNIC-AS-00749, US 396982 3218 3858 436 GOOGLE-CLOUD-PLATFORM, US 174 3188 8759 841 COGENT-174, US 4155 2959 230 1742 USDA-1, US 16625 2906 1232 2166 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 7501 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3907 3395 125 AKAMAI-ASN1, NL 9009 3872 366 2180 M247, RO 12389 3118 2315 866 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2404 361 585 TELLCOM-AS, TR 212238 2371 169 1726 CDNEXT, GB 203020 1835 221 843 HOSTROYALE, IN 13188 1606 100 34 TRIOLAN, UA 8452 1602 1852 14 TE-AS TE-AS, EG 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 12303 3273 572 UNINET, MX 10620 3486 472 1048 Telmex Colombia S.A., CO 13999 2532 511 347 Mega Cable, S.A. de C.V., MX 11830 1988 369 64 Instituto Costarricense de Electricidad y 28573 1370 2434 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1180 371 22 Telefonica del Peru S.A.A., PE 11664 1069 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1053 67 377 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1011 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 1792 660 28 RAYA-AS, EG 29571 1498 94 37 ORANGE-COTE-IVOIRE, CI 36992 1416 1495 374 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1243 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 972 521 42 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 554 82 3 KENET-AS, KE 15399 548 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 14093 40854 5383 AMAZON-02, US 9808 12918 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12303 3273 572 UNINET, MX 12479 7501 1711 150 UNI2-AS, ES 7545 6139 838 616 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4744 315 801 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4396 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3943 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 12918 12804 CHINAMOBILE-CN China Mobile Communications Grou 8151 12303 11731 UNINET, MX 12479 7501 7351 UNI2-AS, ES 7545 6139 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4396 4370 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4744 3943 CABLEONE, US 7552 3943 3916 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 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 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 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 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 /11:92 /12:298 /13:576 /14:1199 /15:2124 /16:13728 /17:8134 /18:13388 /19:24444 /20:44149 /21:51707 /22:112032 /23:102906 /24:620242 /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 6505 12303 UNINET, MX 12479 6452 7501 UNI2-AS, ES 11492 3560 4744 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3448 3651 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2501 3351 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2387 14093 AMAZON-02, US 30036 2319 2662 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2206 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) ---------------------------------------------- 1:2422 2:1505 3:925 4:10 5:4821 6:156 7:6 8:1540 9:4 11:172 12:1253 13:505 14:2601 15:390 16:285 17:386 18:901 20:566 21:4 22:188 23:7810 24:2660 25:2 27:2803 29:19 31:3355 32:29 33:1 34:84 35:261 36:4305 37:4528 38:9381 39:993 40:267 41:4303 42:1941 43:2735 44:380 45:18851 46:5106 47:342 49:1995 50:2060 51:591 52:1581 54:359 55:1114 56:11 57:283 58:2279 59:1289 60:1182 61:2900 62:3031 63:1774 64:5597 65:2141 66:4803 67:3089 68:1068 69:3881 70:1037 71:627 72:2856 74:2799 75:1505 76:601 77:2774 78:1898 79:1746 80:2227 81:2079 82:3262 83:1440 84:1914 85:3485 86:1128 87:2120 88:1318 89:4477 90:793 91:8415 92:2768 93:2981 94:4148 95:4428 96:1448 97:310 98:949 99:726 100:71 101:1471 102:3977 103:32831 104:5316 105:757 106:876 107:2658 108:1232 109:4187 110:2239 111:3579 112:2474 113:1837 114:1978 115:2189 116:2095 117:2704 118:3018 119:1949 120:2201 121:1326 122:2801 123:2222 124:1708 125:2910 126:91 128:1556 129:958 130:1276 131:2141 132:780 133:459 134:1615 135:366 136:1477 137:1119 138:2808 139:1593 140:1613 141:1542 142:1901 143:1995 144:1202 145:605 146:2175 147:2105 148:2721 149:2907 150:1261 151:2413 152:2109 153:563 154:7232 155:1972 156:3155 157:1958 158:1473 159:2540 160:3588 161:1937 162:3900 163:2289 164:1908 165:2512 166:1557 167:2061 168:3851 169:777 170:5252 171:996 172:4234 173:3403 174:904 175:1325 176:3790 177:4805 178:4018 179:2301 180:2732 181:4188 182:3625 183:2364 184:2054 185:21610 186:5308 187:4584 188:4314 189:4336 190:9435 191:1530 192:11355 193:9475 194:7788 195:5653 196:3268 197:3223 198:6093 199:8643 200:8079 201:6400 202:10424 203:10636 204:4564 205:3627 206:4470 207:3523 208:4267 209:5156 210:4661 211:2650 212:4629 213:3822 214:1042 215:51 216:6812 217:3290 218:1451 219:393 220:2156 221:1208 222:748 223:2827 End of report