IPv4 R&E Routing Table Report 23:05 GMT Sat 06 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: 996101 Prefixes after maximum aggregation (per Origin AS): 387169 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 493017 Number of IPv4 prefixes with a valid ROA: 567122 Number of IPv4 prefixes with an invalid ROA: 817 Number of IPv4 prefixes with no ROA: 428162 Total ASes present in the Internet Routing Table: 77158 Prefixes per ASN: 12.91 Origin-only ASes present in the Internet Routing Table: 66107 Origin ASes announcing only one prefix: 26994 Transit ASes present in the Internet Routing Table: 11051 Transit-only ASes present in the Internet Routing Table: 544 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: 92 Max AS path prepend of ASN ( 37447) 54 Prefixes from unregistered ASNs in the Routing Table: 1099 Number of instances of unregistered ASNs: 1129 Number of 32-bit ASNs allocated by the RIRs: 47334 Number of 32-bit ASNs visible in the Routing Table: 38863 Prefixes from 32-bit ASNs in the Routing Table: 209644 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: 440 Number of addresses announced to Internet: 3106824192 Equivalent to 185 /8s, 46 /16s and 96 /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: 324498 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 266025 Total APNIC prefixes after maximum aggregation: 78793 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 256336 Unique aggregates announced from the APNIC address blocks: 105521 APNIC Region origin ASes present in the Internet Routing Table: 14731 APNIC Prefixes per ASN: 17.40 APNIC Region origin ASes announcing only one prefix: 4473 APNIC Region transit ASes present in the Internet Routing Table: 1986 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: 10304 Number of APNIC addresses announced to Internet: 749991424 Equivalent to 44 /8s, 179 /16s and 246 /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: 291665 Total ARIN prefixes after maximum aggregation: 133125 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 293228 Unique aggregates announced from the ARIN address blocks: 142379 ARIN Region origin ASes present in the Internet Routing Table: 19261 ARIN Prefixes per ASN: 15.22 ARIN Region origin ASes announcing only one prefix: 7055 ARIN Region transit ASes present in the Internet Routing Table: 1934 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: 5316 Number of ARIN addresses announced to Internet: 1349215744 Equivalent to 80 /8s, 107 /16s and 102 /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: 277942 Total RIPE prefixes after maximum aggregation: 137582 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 277084 Unique aggregates announced from the RIPE address blocks: 179452 RIPE Region origin ASes present in the Internet Routing Table: 29040 RIPE Prefixes per ASN: 9.54 RIPE Region origin ASes announcing only one prefix: 12100 RIPE Region transit ASes present in the Internet Routing Table: 4006 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: 12680 Number of RIPE addresses announced to Internet: 731952896 Equivalent to 43 /8s, 160 /16s and 183 /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: 124408 Total LACNIC prefixes after maximum aggregation: 30172 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 120624 Unique aggregates announced from the LACNIC address blocks: 49398 LACNIC Region origin ASes present in the Internet Routing Table: 11276 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2653 LACNIC Region transit ASes present in the Internet Routing Table: 2540 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 92 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9241 Number of LACNIC addresses announced to Internet: 170684416 Equivalent to 10 /8s, 44 /16s and 112 /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: 34962 Total AfriNIC prefixes after maximum aggregation: 6775 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 48389 Unique aggregates announced from the AfriNIC address blocks: 15886 AfriNIC Region origin ASes present in the Internet Routing Table: 1958 AfriNIC Prefixes per ASN: 24.71 AfriNIC Region origin ASes announcing only one prefix: 713 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: 104737536 Equivalent to 6 /8s, 62 /16s and 43 /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 12913 8729 114 CHINAMOBILE-CN China Mobile Communication 7545 6138 838 615 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4466 535 310 BBIL-AP BHARTI Airtel Ltd., IN 18403 4409 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3932 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3653 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3305 1869 101 VNPT-AS-VN VNPT Corp, VN 56046 2980 812 179 CMNET-JIANGSU-AP China Mobile communicati 24560 2915 862 506 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 14311 40861 5413 AMAZON-02, US 11492 4732 314 822 CABLEONE, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 22773 3759 3052 313 ASN-CXA-ALL-CCI-22773-RDC, US 6327 3660 1320 82 SHAW, CA 396982 3225 3859 443 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 174 3194 8759 840 COGENT-174, US 4155 2982 232 1741 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 7492 1711 150 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3909 3395 125 AKAMAI-ASN1, NL 9009 3882 366 2186 M247, RO 12389 3119 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2412 361 585 TELLCOM-AS, TR 212238 2412 171 1747 CDNEXT, GB 203020 1876 225 864 HOSTROYALE, IN 13188 1606 100 34 TRIOLAN, UA 8452 1605 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 12337 3277 571 UNINET, MX 10620 3486 472 1048 Telmex Colombia S.A., CO 13999 2529 510 352 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1370 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1216 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1178 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1012 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 1824 652 28 RAYA-AS, EG 36992 1425 1495 377 ETISALAT-MISR, EG 29571 1371 102 38 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1244 389 20 LINKdotNET-AS, EG 37069 1085 1096 13 MOBINIL, EG 36935 1066 523 46 Vodafone-, EG 20011 576 154 212 INTERNET-SOLUTIONS, ZA 36914 569 82 3 KENET-AS, KE 15399 550 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 14311 40861 5413 AMAZON-02, US 9808 12913 8729 114 CHINAMOBILE-CN China Mobile Communication 8151 12337 3277 571 UNINET, MX 12479 7492 1711 150 UNI2-AS, ES 7545 6138 838 615 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4732 314 822 CABLEONE, US 9498 4466 535 310 BBIL-AP BHARTI Airtel Ltd., IN 18403 4409 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3932 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 12913 12799 CHINAMOBILE-CN China Mobile Communications Grou 8151 12337 11766 UNINET, MX 12479 7492 7342 UNI2-AS, ES 7545 6138 5523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4409 4383 FPT-AS-AP FPT Telecom Company, VN 9498 4466 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4732 3910 CABLEONE, US 7552 3932 3905 VIETEL-AS-AP Viettel Group, VN 20940 3909 3784 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 23.145.20.0/24 Origin: 63023 AS-GLOBALTELEHOST, US 23.145.20.0/24 Transit: 3257 GTT-BACKBONE GTT, 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 /15:2124 /16:13710 /17:8138 /18:13372 /19:24444 /20:44167 /21:51685 /22:112086 /23:102981 /24:621158 /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 6540 12337 UNINET, MX 12479 6447 7492 UNI2-AS, ES 11492 3548 4732 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3456 3660 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2503 3759 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2412 14311 AMAZON-02, US 30036 2326 2669 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 2:1507 3:933 4:10 5:4814 6:156 7:6 8:1538 9:4 11:172 12:1253 13:561 14:2616 15:397 16:302 17:388 18:902 20:568 21:4 22:188 23:7795 24:2656 25:2 27:2799 29:19 31:3359 32:29 33:1 34:84 35:270 36:4305 37:4521 38:9323 39:999 40:261 41:4261 42:1935 43:2730 44:376 45:18931 46:5121 47:342 49:1993 50:2048 51:591 52:1608 54:361 55:1105 56:11 57:280 58:2273 59:1293 60:1182 61:2904 62:3039 63:1774 64:5606 65:2134 66:4820 67:3100 68:1071 69:3876 70:1038 71:626 72:2862 74:2804 75:1503 76:599 77:2781 78:1896 79:1751 80:2225 81:2082 82:3292 83:1451 84:1943 85:3485 86:1098 87:2117 88:1318 89:4481 90:803 91:8404 92:2764 93:2966 94:4153 95:4420 96:1447 97:310 98:950 99:735 100:71 101:1475 102:4021 103:32771 104:5284 105:776 106:876 107:2651 108:1214 109:4196 110:2233 111:3584 112:2468 113:1848 114:1979 115:2210 116:2086 117:2697 118:3032 119:1949 120:2201 121:1329 122:2788 123:2237 124:1710 125:2904 126:91 128:1559 129:960 130:1284 131:2143 132:776 133:460 134:1596 135:367 136:1486 137:1121 138:2804 139:1583 140:1621 141:1542 142:1909 143:2017 144:1221 145:607 146:2175 147:2109 148:2716 149:2909 150:1263 151:2365 152:2109 153:563 154:7468 155:1960 156:3444 157:1961 158:1416 159:2556 160:3581 161:1939 162:3896 163:2293 164:1911 165:2557 166:1557 167:2065 168:3824 169:777 170:5251 171:1002 172:4240 173:3408 174:903 175:1339 176:3797 177:4757 178:4033 179:2309 180:2723 181:4182 182:3663 183:2358 184:2050 185:21623 186:5357 187:4650 188:4283 189:4350 190:9676 191:1540 192:11361 193:9465 194:7794 195:5552 196:3289 197:3249 198:6086 199:8656 200:8036 201:6313 202:10419 203:10642 204:4551 205:3595 206:4492 207:3524 208:4266 209:5154 210:4680 211:2652 212:4660 213:3843 214:1039 215:51 216:6846 217:3288 218:1452 219:394 220:2155 221:1208 222:747 223:2821 End of report