IPv4 R&E Routing Table Report 23:05 GMT Thu 11 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: 998925 Prefixes after maximum aggregation (per Origin AS): 388015 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 493750 Number of IPv4 prefixes with a valid ROA: 569592 Number of IPv4 prefixes with an invalid ROA: 1053 Number of IPv4 prefixes with no ROA: 428280 Total ASes present in the Internet Routing Table: 77207 Prefixes per ASN: 12.94 Origin-only ASes present in the Internet Routing Table: 66125 Origin ASes announcing only one prefix: 27011 Transit ASes present in the Internet Routing Table: 11082 Transit-only ASes present in the Internet Routing Table: 548 Paths with bogon ASNs present in the IPv4 Routing Table: 26 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: 1128 Number of instances of unregistered ASNs: 1158 Number of 32-bit ASNs allocated by the RIRs: 47369 Number of 32-bit ASNs visible in the Routing Table: 38907 Prefixes from 32-bit ASNs in the Routing Table: 210424 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 446 Number of addresses announced to Internet: 3107389696 Equivalent to 185 /8s, 55 /16s and 1 /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: 325003 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 267633 Total APNIC prefixes after maximum aggregation: 79133 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 257703 Unique aggregates announced from the APNIC address blocks: 105613 APNIC Region origin ASes present in the Internet Routing Table: 14759 APNIC Prefixes per ASN: 17.46 APNIC Region origin ASes announcing only one prefix: 4479 APNIC Region transit ASes present in the Internet Routing Table: 1993 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: 10329 Number of APNIC addresses announced to Internet: 750290944 Equivalent to 44 /8s, 184 /16s and 136 /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: 292221 Total ARIN prefixes after maximum aggregation: 133376 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293568 Unique aggregates announced from the ARIN address blocks: 142550 ARIN Region origin ASes present in the Internet Routing Table: 19263 ARIN Prefixes per ASN: 15.24 ARIN Region origin ASes announcing only one prefix: 7063 ARIN Region transit ASes present in the Internet Routing Table: 1938 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: 5323 Number of ARIN addresses announced to Internet: 1349305600 Equivalent to 80 /8s, 108 /16s and 197 /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: 278249 Total RIPE prefixes after maximum aggregation: 137748 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277506 Unique aggregates announced from the RIPE address blocks: 179754 RIPE Region origin ASes present in the Internet Routing Table: 29040 RIPE Prefixes per ASN: 9.56 RIPE Region origin ASes announcing only one prefix: 12106 RIPE Region transit ASes present in the Internet Routing Table: 4016 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: 12687 Number of RIPE addresses announced to Internet: 732154624 Equivalent to 43 /8s, 163 /16s and 203 /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: 124651 Total LACNIC prefixes after maximum aggregation: 30220 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120877 Unique aggregates announced from the LACNIC address blocks: 49387 LACNIC Region origin ASes present in the Internet Routing Table: 11283 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2651 LACNIC Region transit ASes present in the Internet Routing Table: 2550 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: 9246 Number of LACNIC addresses announced to Internet: 170723072 Equivalent to 10 /8s, 45 /16s and 7 /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: 35043 Total AfriNIC prefixes after maximum aggregation: 6803 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 48825 Unique aggregates announced from the AfriNIC address blocks: 16056 AfriNIC Region origin ASes present in the Internet Routing Table: 1960 AfriNIC Prefixes per ASN: 24.91 AfriNIC Region origin ASes announcing only one prefix: 712 AfriNIC Region transit ASes present in the Internet Routing Table: 384 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: 1322 Number of AfriNIC addresses announced to Internet: 104655616 Equivalent to 6 /8s, 60 /16s and 235 /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 13267 8729 114 CHINAMOBILE-CN China Mobile Communication 7545 6137 838 614 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4466 535 310 BBIL-AP BHARTI Airtel Ltd., IN 18403 4451 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3937 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3678 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3304 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3016 812 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2920 863 509 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2177 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 14363 40862 5374 AMAZON-02, US 11492 4733 314 822 CABLEONE, US 22773 3959 3046 317 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3660 1320 81 SHAW, CA 174 3248 8762 879 COGENT-174, US 396982 3228 3859 444 GOOGLE-CLOUD-PLATFORM, US 749 3219 54766 2470 DNIC-AS-00749, US 4155 2998 233 1736 USDA-1, US 16625 2900 1230 2162 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 7490 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3906 3395 125 AKAMAI-ASN1, NL 9009 3899 366 2190 M247, RO 12389 3120 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2418 172 1751 CDNEXT, GB 34984 2402 362 579 TELLCOM-AS, TR 203020 1895 226 876 HOSTROYALE, IN 8452 1611 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 12371 3280 573 UNINET, MX 10620 3493 473 1047 Telmex Colombia S.A., CO 13999 2538 511 348 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1375 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1217 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1176 371 22 Telefonica del Peru S.A.A., PE 22884 1059 67 359 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1013 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 1823 652 28 RAYA-AS, EG 36992 1504 1498 379 ETISALAT-MISR, EG 29571 1341 102 38 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1245 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 1066 523 46 Vodafone-, EG 36914 578 82 3 KENET-AS, KE 20011 576 154 212 NTT-DATA-Inc, ZA 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 14363 40862 5374 AMAZON-02, US 9808 13267 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12371 3280 573 UNINET, MX 12479 7490 1711 149 UNI2-AS, ES 7545 6137 838 614 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4733 314 822 CABLEONE, US 9498 4466 535 310 BBIL-AP BHARTI Airtel Ltd., IN 18403 4451 347 26 FPT-AS-AP FPT Telecom Company, VN 22773 3959 3046 317 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 13267 13153 CHINAMOBILE-CN China Mobile Communications Grou 8151 12371 11798 UNINET, MX 12479 7490 7341 UNI2-AS, ES 7545 6137 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4451 4425 FPT-AS-AP FPT Telecom Company, VN 9498 4466 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4733 3911 CABLEONE, US 7552 3937 3910 VIETEL-AS-AP Viettel Group, VN 20940 3906 3781 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 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, 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 /11:92 /12:298 /13:576 /14:1199 /15:2123 /16:13729 /17:8146 /18:13384 /19:24453 /20:44169 /21:51810 /22:112194 /23:103121 /24:623560 /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 6571 12371 UNINET, MX 12479 6448 7490 UNI2-AS, ES 11492 3549 4733 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3457 3660 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2503 3959 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2439 14363 AMAZON-02, US 30036 2308 2650 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) ---------------------------------------------- 1:2423 2:1513 3:935 4:10 5:4826 6:157 7:6 8:1543 9:4 11:172 12:1248 13:561 14:2620 15:398 16:302 17:389 18:904 20:569 21:4 22:188 23:7822 24:2650 25:2 27:2807 29:19 31:3367 32:30 33:1 34:84 35:271 36:4336 37:4535 38:9394 39:1030 40:281 41:4335 42:1958 43:2748 44:372 45:19044 46:5105 47:342 49:2013 50:2047 51:592 52:1606 54:371 55:1117 56:11 57:283 58:2279 59:1300 60:1182 61:2913 62:3049 63:1763 64:5617 65:2141 66:4830 67:3096 68:1077 69:3884 70:1038 71:626 72:2877 74:2807 75:1502 76:600 77:2779 78:1896 79:1761 80:2232 81:2081 82:3302 83:1454 84:1961 85:3492 86:1101 87:2116 88:1319 89:4495 90:804 91:8395 92:2780 93:2971 94:4159 95:4424 96:1447 97:312 98:946 99:751 100:70 101:1474 102:4067 103:32898 104:5291 105:777 106:877 107:2654 108:1218 109:4196 110:2248 111:3673 112:2534 113:1845 114:1995 115:2199 116:2092 117:2807 118:3062 119:1957 120:2201 121:1344 122:2786 123:2240 124:1718 125:2919 126:91 128:1555 129:958 130:1277 131:2133 132:781 133:461 134:1607 135:365 136:1485 137:1137 138:2819 139:1599 140:1624 141:1539 142:1910 143:2045 144:1250 145:609 146:2175 147:2107 148:2722 149:2902 150:1283 151:2407 152:2115 153:563 154:7503 155:2036 156:3576 157:1991 158:1424 159:2556 160:3603 161:1944 162:3911 163:2297 164:1920 165:2586 166:1559 167:2078 168:3796 169:773 170:5327 171:1005 172:4226 173:3403 174:902 175:1350 176:3794 177:4787 178:4110 179:2322 180:2745 181:4198 182:3692 183:2529 184:2050 185:21630 186:5427 187:4618 188:4277 189:4366 190:9625 191:1568 192:11365 193:9455 194:7797 195:5553 196:3292 197:3254 198:6089 199:8660 200:8078 201:6332 202:10395 203:10654 204:4551 205:3627 206:4487 207:3517 208:4267 209:5163 210:4685 211:2665 212:4669 213:3844 214:1044 215:52 216:6834 217:3307 218:1459 219:396 220:2156 221:1217 222:750 223:2877 End of report