IPv4 R&E Routing Table Report 23:05 GMT Sun 20 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: 987853 Prefixes after maximum aggregation (per Origin AS): 382820 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 487135 Number of IPv4 prefixes with a valid ROA: 555440 Number of IPv4 prefixes with an invalid ROA: 794 Number of IPv4 prefixes with no ROA: 431619 Total ASes present in the Internet Routing Table: 76926 Prefixes per ASN: 12.84 Origin-only ASes present in the Internet Routing Table: 65922 Origin ASes announcing only one prefix: 26916 Transit ASes present in the Internet Routing Table: 11004 Transit-only ASes present in the Internet Routing Table: 548 Paths with bogon ASNs present in the IPv4 Routing Table: 27 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 63 Max AS path prepend of ASN ( 37447) 57 Prefixes from unregistered ASNs in the Routing Table: 1154 Number of instances of unregistered ASNs: 1187 Number of 32-bit ASNs allocated by the RIRs: 46910 Number of 32-bit ASNs visible in the Routing Table: 38554 Prefixes from 32-bit ASNs in the Routing Table: 206049 Number of bogon 32-bit ASNs visible in the Routing Table: 82 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 426 Number of addresses announced to Internet: 3106742784 Equivalent to 185 /8s, 45 /16s and 34 /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: 322078 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 262291 Total APNIC prefixes after maximum aggregation: 77800 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 253188 Unique aggregates announced from the APNIC address blocks: 105010 APNIC Region origin ASes present in the Internet Routing Table: 14683 APNIC Prefixes per ASN: 17.24 APNIC Region origin ASes announcing only one prefix: 4477 APNIC Region transit ASes present in the Internet Routing Table: 1980 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10243 Number of APNIC addresses announced to Internet: 749134080 Equivalent to 44 /8s, 166 /16s and 225 /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: 289809 Total ARIN prefixes after maximum aggregation: 131759 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291469 Unique aggregates announced from the ARIN address blocks: 141076 ARIN Region origin ASes present in the Internet Routing Table: 19200 ARIN Prefixes per ASN: 15.18 ARIN Region origin ASes announcing only one prefix: 7036 ARIN Region transit ASes present in the Internet Routing Table: 1932 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: 5251 Number of ARIN addresses announced to Internet: 1349176064 Equivalent to 80 /8s, 106 /16s and 203 /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: 275832 Total RIPE prefixes after maximum aggregation: 135949 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274919 Unique aggregates announced from the RIPE address blocks: 177484 RIPE Region origin ASes present in the Internet Routing Table: 28948 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12061 RIPE Region transit ASes present in the Internet Routing Table: 4002 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12553 Number of RIPE addresses announced to Internet: 732233472 Equivalent to 43 /8s, 164 /16s and 255 /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: 124272 Total LACNIC prefixes after maximum aggregation: 29793 LACNIC Deaggregation factor: 4.17 Prefixes being announced from the LACNIC address blocks: 120624 Unique aggregates announced from the LACNIC address blocks: 49167 LACNIC Region origin ASes present in the Internet Routing Table: 11255 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2651 LACNIC Region transit ASes present in the Internet Routing Table: 2526 Average LACNIC Region AS path length visible: 5.6 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9219 Number of LACNIC addresses announced to Internet: 171087360 Equivalent to 10 /8s, 50 /16s and 150 /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: 34495 Total AfriNIC prefixes after maximum aggregation: 6764 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 47227 Unique aggregates announced from the AfriNIC address blocks: 14030 AfriNIC Region origin ASes present in the Internet Routing Table: 1921 AfriNIC Prefixes per ASN: 24.58 AfriNIC Region origin ASes announcing only one prefix: 691 AfriNIC Region transit ASes present in the Internet Routing Table: 372 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1288 Number of AfriNIC addresses announced to Internet: 104868352 Equivalent to 6 /8s, 64 /16s and 42 /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 11823 8762 116 CHINAMOBILE-CN China Mobile Communication 7545 6159 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4489 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4461 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3701 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3289 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2905 863 520 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2740 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2188 434 193 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 13691 40975 5287 AMAZON-02, US 11492 4811 319 621 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3497 8771 860 COGENT-174, US 22773 3341 3032 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3223 54766 2474 DNIC-AS-00749, US 396982 3196 3855 432 GOOGLE-CLOUD-PLATFORM, US 16625 2932 1239 2182 AKAMAI-AS, US 4155 2862 217 1732 USDA-1, 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 7605 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3920 3395 123 AKAMAI-ASN1, NL 9009 3784 360 2106 M247, RO 12389 3119 2317 872 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2402 361 582 TELLCOM-AS, TR 212238 2323 164 1691 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1545 1852 14 TE-AS TE-AS, EG 203020 1475 163 648 HOSTROYALE, IN 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 12309 3259 574 UNINET, MX 10620 3514 482 1020 Telmex Colombia S.A., CO 13999 2529 511 349 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1370 2435 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1346 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1194 371 22 Telefonica del Peru S.A.A., PE 22884 1066 68 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 11664 1065 278 33 Techtel LMDS Comunicaciones Interactivas 6503 1022 373 162 Axtel, S.A.B. de C.V., MX 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 1732 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1261 1486 346 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1213 389 22 LINKdotNET-AS, EG 37069 1101 1112 11 MOBINIL, EG 36935 822 520 43 Vodafone-, EG 36914 570 82 3 KENET-AS, KE 20011 568 154 212 INTERNET-SOLUTIONS, ZA 15399 532 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 13691 40975 5287 AMAZON-02, US 8151 12309 3259 574 UNINET, MX 9808 11823 8762 116 CHINAMOBILE-CN China Mobile Communication 12479 7605 1712 148 UNI2-AS, ES 7545 6159 840 621 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4811 319 621 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4489 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4461 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3920 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 12309 11735 UNINET, MX 9808 11823 11707 CHINAMOBILE-CN China Mobile Communications Grou 12479 7605 7457 UNI2-AS, ES 7545 6159 5538 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4489 4463 FPT-AS-AP FPT Telecom Company, VN 11492 4811 4190 CABLEONE, US 9498 4461 4150 BBIL-AP BHARTI Airtel Ltd., IN 7552 3918 3891 VIETEL-AS-AP Viettel Group, VN 20940 3920 3797 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 398074 UNALLOCATED 8.28.115.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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 23.147.224.0/24 Origin: 27392 639-DATACENTERS, US 23.147.224.0/24 Transit: 3356 LEVEL3, 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 /13:578 /14:1200 /15:2126 /16:13745 /17:8159 /18:13418 /19:24413 /20:43847 /21:51513 /22:111516 /23:102423 /24:614454 /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 6547 7605 UNI2-AS, ES 8151 6527 12309 UNINET, MX 11492 3605 4811 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2814 3855 VIASAT-SP-BACKBONE, US 22773 2493 3341 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2353 13691 AMAZON-02, US 30036 2270 2611 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2201 3514 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) ---------------------------------------------- 1:2415 2:1492 3:854 4:10 5:4763 6:162 7:6 8:1553 9:1 11:172 12:1335 13:460 14:2561 15:365 16:286 17:379 18:896 20:558 21:4 22:188 23:7684 24:2675 25:2 27:2804 29:19 31:3342 32:35 33:1 34:83 35:257 36:3641 37:4558 38:9432 39:911 40:253 41:4203 42:1974 43:2719 44:368 45:18671 46:5091 47:336 49:1875 50:1939 51:591 52:1552 54:327 55:1112 56:11 57:271 58:2208 59:1296 60:1186 61:2830 62:2961 63:1793 64:5520 65:2162 66:4695 67:3090 68:1085 69:3860 70:1042 71:622 72:2851 74:2777 75:1503 76:602 77:2756 78:1898 79:1692 80:2198 81:2048 82:3170 83:1436 84:1879 85:3459 86:1087 87:2125 88:1312 89:4425 90:778 91:8407 92:2707 93:2946 94:4065 95:4396 96:1445 97:310 98:955 99:695 100:71 101:1437 102:3889 103:32836 104:5211 105:790 106:970 107:2639 108:1254 109:4174 110:2243 111:3311 112:2236 113:1851 114:1955 115:2212 116:2078 117:2582 118:2979 119:1918 120:2156 121:1322 122:2785 123:2228 124:1691 125:2904 126:89 128:1569 129:962 130:1290 131:2036 132:767 133:450 134:1639 135:350 136:1450 137:1121 138:2811 139:1581 140:1633 141:1505 142:1906 143:1992 144:1195 145:562 146:2162 147:2100 148:2708 149:2935 150:1276 151:2232 152:2070 153:525 154:7570 155:1847 156:3078 157:1955 158:1348 159:2507 160:3631 161:1887 162:3848 163:2246 164:1846 165:2354 166:1519 167:2019 168:3979 169:779 170:5126 171:1006 172:4235 173:3388 174:918 175:1327 176:3723 177:4699 178:3931 179:2306 180:2727 181:4132 182:3510 183:2272 184:2063 185:21572 186:5219 187:4657 188:4275 189:4324 190:9557 191:1490 192:11310 193:9472 194:7768 195:5579 196:3291 197:3202 198:6079 199:8591 200:8083 201:6385 202:10376 203:10641 204:4647 205:3600 206:4470 207:3511 208:4255 209:5125 210:4564 211:2590 212:4546 213:3820 214:1022 215:46 216:6754 217:3226 218:1363 219:394 220:2146 221:1191 222:743 223:2687 End of report