IPv4 R&E Routing Table Report 23:05 GMT Tue 01 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: 985448 Prefixes after maximum aggregation (per Origin AS): 381452 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 484390 Number of IPv4 prefixes with a valid ROA: 552106 Number of IPv4 prefixes with an invalid ROA: 948 Number of IPv4 prefixes with no ROA: 432394 Total ASes present in the Internet Routing Table: 76808 Prefixes per ASN: 12.83 Origin-only ASes present in the Internet Routing Table: 65831 Origin ASes announcing only one prefix: 26867 Transit ASes present in the Internet Routing Table: 10977 Transit-only ASes present in the Internet Routing Table: 539 Paths with bogon ASNs present in the IPv4 Routing Table: 33 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 73 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1139 Number of instances of unregistered ASNs: 1178 Number of 32-bit ASNs allocated by the RIRs: 46722 Number of 32-bit ASNs visible in the Routing Table: 38405 Prefixes from 32-bit ASNs in the Routing Table: 205085 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: 450 Number of addresses announced to Internet: 3105621248 Equivalent to 185 /8s, 28 /16s and 5 /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: 321535 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 260964 Total APNIC prefixes after maximum aggregation: 77621 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 251909 Unique aggregates announced from the APNIC address blocks: 104445 APNIC Region origin ASes present in the Internet Routing Table: 14616 APNIC Prefixes per ASN: 17.24 APNIC Region origin ASes announcing only one prefix: 4422 APNIC Region transit ASes present in the Internet Routing Table: 1964 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10169 Number of APNIC addresses announced to Internet: 748761088 Equivalent to 44 /8s, 161 /16s and 48 /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: 288975 Total ARIN prefixes after maximum aggregation: 131257 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 290238 Unique aggregates announced from the ARIN address blocks: 139806 ARIN Region origin ASes present in the Internet Routing Table: 19194 ARIN Prefixes per ASN: 15.12 ARIN Region origin ASes announcing only one prefix: 7033 ARIN Region transit ASes present in the Internet Routing Table: 1924 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: 5228 Number of ARIN addresses announced to Internet: 1349260544 Equivalent to 80 /8s, 108 /16s and 21 /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: 275231 Total RIPE prefixes after maximum aggregation: 135420 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274234 Unique aggregates announced from the RIPE address blocks: 176733 RIPE Region origin ASes present in the Internet Routing Table: 28916 RIPE Prefixes per ASN: 9.48 RIPE Region origin ASes announcing only one prefix: 12054 RIPE Region transit ASes present in the Internet Routing Table: 3994 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 73 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12507 Number of RIPE addresses announced to Internet: 731091968 Equivalent to 43 /8s, 147 /16s and 148 /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: 123903 Total LACNIC prefixes after maximum aggregation: 29753 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 120361 Unique aggregates announced from the LACNIC address blocks: 49035 LACNIC Region origin ASes present in the Internet Routing Table: 11272 LACNIC Prefixes per ASN: 10.68 LACNIC Region origin ASes announcing only one prefix: 2673 LACNIC Region transit ASes present in the Internet Routing Table: 2518 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 71 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9224 Number of LACNIC addresses announced to Internet: 171160832 Equivalent to 10 /8s, 51 /16s and 181 /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: 35236 Total AfriNIC prefixes after maximum aggregation: 6655 AfriNIC Deaggregation factor: 5.29 Prefixes being announced from the AfriNIC address blocks: 48256 Unique aggregates announced from the AfriNIC address blocks: 13965 AfriNIC Region origin ASes present in the Internet Routing Table: 1913 AfriNIC Prefixes per ASN: 25.23 AfriNIC Region origin ASes announcing only one prefix: 685 AfriNIC Region transit ASes present in the Internet Routing Table: 374 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1277 Number of AfriNIC addresses announced to Internet: 105095168 Equivalent to 6 /8s, 67 /16s and 160 /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 11415 8759 114 CHINAMOBILE-CN China Mobile Communication 7545 6124 839 625 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4457 536 316 BBIL-AP BHARTI Airtel Ltd., IN 18403 4362 347 26 FPT-AS-AP FPT Telecom Company, VN 7552 3909 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3697 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3288 1869 103 VNPT-AS-VN VNPT Corp, VN 24560 2899 857 526 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2413 812 179 CMNET-JIANGSU-AP China Mobile communicati 4755 2183 434 194 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 13573 40947 5209 AMAZON-02, US 11492 4781 317 604 CABLEONE, US 7155 3857 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3514 8768 858 COGENT-174, US 22773 3341 3033 168 ASN-CXA-ALL-CCI-22773-RDC, US 749 3226 54767 2477 DNIC-AS-00749, US 396982 3193 3854 430 GOOGLE-CLOUD-PLATFORM, US 16625 2959 1242 2205 AKAMAI-AS, US 36352 2832 231 858 AS-COLOCROSSING, 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 7662 1713 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3933 3395 123 AKAMAI-ASN1, NL 9009 3768 350 2101 M247, RO 12389 3117 2305 886 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2400 361 580 TELLCOM-AS, TR 212238 2342 170 1709 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1562 1852 14 TE-AS TE-AS, EG 8551 1430 366 39 BEZEQ-INTERNATIONAL-AS Bezeqint Internet 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 12235 3256 577 UNINET, MX 10620 3508 481 1019 Telmex Colombia S.A., CO 13999 2538 538 355 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1368 2436 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1344 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1197 371 22 Telefonica del Peru S.A.A., PE 22884 1062 67 368 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1054 2487 55 TIM SA, BR 11664 1045 278 33 Techtel LMDS Comunicaciones Interactivas 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 660 28 RAYA-AS, EG 24863 1621 389 17 LINKdotNET-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1430 1519 280 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 37069 1099 1100 18 MOBINIL, EG 36935 1061 520 44 Vodafone-, EG 20011 568 154 212 INTERNET-SOLUTIONS, ZA 36914 568 82 3 KENET-AS, KE 15399 534 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 13573 40947 5209 AMAZON-02, US 8151 12235 3256 577 UNINET, MX 9808 11415 8759 114 CHINAMOBILE-CN China Mobile Communication 12479 7662 1713 148 UNI2-AS, ES 7545 6124 839 625 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4781 317 604 CABLEONE, US 9498 4457 536 316 BBIL-AP BHARTI Airtel Ltd., IN 18403 4362 347 26 FPT-AS-AP FPT Telecom Company, VN 20940 3933 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 8151 12235 11658 UNINET, MX 9808 11415 11301 CHINAMOBILE-CN China Mobile Communications Grou 12479 7662 7514 UNI2-AS, ES 7545 6124 5499 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4362 4336 FPT-AS-AP FPT Telecom Company, VN 11492 4781 4177 CABLEONE, US 9498 4457 4141 BBIL-AP BHARTI Airtel Ltd., IN 7552 3909 3883 VIETEL-AS-AP Viettel Group, VN 20940 3933 3810 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 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 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: 3491 CONSOLE-CONNECT-ASN, US 23.140.212.0/24 Origin: 398338 DOLLAR DISCOUNT HOSTING, US 23.140.212.0/24 Transit: 13335 CLOUDFLARENET, 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 /12:299 /13:582 /14:1200 /15:2131 /16:13774 /17:8180 /18:13424 /19:24419 /20:43841 /21:51582 /22:111772 /23:102384 /24:611697 /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 6585 7662 UNI2-AS, ES 8151 6444 12235 UNINET, MX 11492 3577 4781 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3431 3636 SHAW, CA 7155 2816 3857 VIASAT-SP-BACKBONE, US 22773 2491 3341 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2355 13573 AMAZON-02, US 30036 2259 2600 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2195 3508 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) ---------------------------------------------- 1:2379 2:1503 3:819 4:10 5:4759 6:160 7:6 8:1572 9:1 11:172 12:1339 13:444 14:2540 15:363 16:285 17:379 18:892 20:554 21:4 22:188 23:7611 24:2672 25:2 27:2771 29:19 31:3300 32:35 33:1 34:83 35:256 36:3232 37:4582 38:9323 39:906 40:210 41:4272 42:1884 43:2694 44:373 45:18706 46:5121 47:326 49:1930 50:1886 51:592 52:1553 54:321 55:1099 56:11 57:269 58:2231 59:1293 60:1173 61:2831 62:2922 63:1792 64:5494 65:2175 66:4663 67:3070 68:1088 69:3825 70:1047 71:621 72:2851 74:2771 75:1506 76:609 77:2774 78:1886 79:1731 80:2202 81:2075 82:3160 83:1465 84:1867 85:3453 86:1088 87:2129 88:1310 89:4408 90:778 91:8363 92:2740 93:2937 94:4047 95:4374 96:1441 97:310 98:958 99:690 100:72 101:1426 102:3866 103:32892 104:5210 105:760 106:1039 107:2642 108:1243 109:4127 110:2247 111:3223 112:2167 113:1847 114:1981 115:2192 116:2077 117:2546 118:2919 119:1918 120:2096 121:1372 122:2784 123:2211 124:1660 125:2897 126:91 128:1570 129:955 130:1279 131:2046 132:773 133:451 134:1550 135:348 136:1350 137:1117 138:2791 139:1592 140:1620 141:1509 142:1913 143:1948 144:1179 145:560 146:2170 147:2105 148:2710 149:2906 150:1281 151:2135 152:2081 153:524 154:7728 155:1760 156:3100 157:1930 158:1336 159:2503 160:3617 161:1845 162:3873 163:2214 164:1868 165:2039 166:1508 167:1994 168:3944 169:779 170:5113 171:1006 172:4435 173:3353 174:918 175:1324 176:3705 177:4710 178:3886 179:2299 180:2767 181:4093 182:3483 183:2217 184:2070 185:21591 186:5173 187:4578 188:4261 189:4302 190:9583 191:1484 192:11281 193:9446 194:7741 195:5535 196:3303 197:3251 198:6053 199:8528 200:8085 201:6371 202:10327 203:10606 204:4568 205:3590 206:4414 207:3503 208:4251 209:5107 210:4592 211:2555 212:4567 213:3767 214:1011 215:46 216:6749 217:3190 218:1362 219:396 220:2145 221:1162 222:725 223:2556 End of report