IPv4 R&E Routing Table Report 23:05 GMT Wed 23 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: 988331 Prefixes after maximum aggregation (per Origin AS): 382889 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 487352 Number of IPv4 prefixes with a valid ROA: 556000 Number of IPv4 prefixes with an invalid ROA: 588 Number of IPv4 prefixes with no ROA: 431743 Total ASes present in the Internet Routing Table: 76936 Prefixes per ASN: 12.85 Origin-only ASes present in the Internet Routing Table: 65915 Origin ASes announcing only one prefix: 26922 Transit ASes present in the Internet Routing Table: 11021 Transit-only ASes present in the Internet Routing Table: 544 Paths with bogon ASNs present in the IPv4 Routing Table: 30 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 52 Max AS path prepend of ASN ( 37447) 36 Prefixes from unregistered ASNs in the Routing Table: 1175 Number of instances of unregistered ASNs: 1211 Number of 32-bit ASNs allocated by the RIRs: 46887 Number of 32-bit ASNs visible in the Routing Table: 38582 Prefixes from 32-bit ASNs in the Routing Table: 206422 Number of bogon 32-bit ASNs visible in the Routing Table: 88 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 471 Number of addresses announced to Internet: 3106626304 Equivalent to 185 /8s, 43 /16s and 91 /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: 322033 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 262810 Total APNIC prefixes after maximum aggregation: 77823 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 253753 Unique aggregates announced from the APNIC address blocks: 105023 APNIC Region origin ASes present in the Internet Routing Table: 14683 APNIC Prefixes per ASN: 17.28 APNIC Region origin ASes announcing only one prefix: 4474 APNIC Region transit ASes present in the Internet Routing Table: 1984 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: 10242 Number of APNIC addresses announced to Internet: 749233408 Equivalent to 44 /8s, 168 /16s and 101 /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: 289810 Total ARIN prefixes after maximum aggregation: 131720 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 291507 Unique aggregates announced from the ARIN address blocks: 141273 ARIN Region origin ASes present in the Internet Routing Table: 19205 ARIN Prefixes per ASN: 15.18 ARIN Region origin ASes announcing only one prefix: 7042 ARIN Region transit ASes present in the Internet Routing Table: 1926 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: 5253 Number of ARIN addresses announced to Internet: 1348931072 Equivalent to 80 /8s, 103 /16s and 14 /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: 275731 Total RIPE prefixes after maximum aggregation: 135964 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 274700 Unique aggregates announced from the RIPE address blocks: 177464 RIPE Region origin ASes present in the Internet Routing Table: 28931 RIPE Prefixes per ASN: 9.50 RIPE Region origin ASes announcing only one prefix: 12053 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: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12563 Number of RIPE addresses announced to Internet: 732122880 Equivalent to 43 /8s, 163 /16s and 79 /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: 124207 Total LACNIC prefixes after maximum aggregation: 29824 LACNIC Deaggregation factor: 4.16 Prefixes being announced from the LACNIC address blocks: 120508 Unique aggregates announced from the LACNIC address blocks: 49132 LACNIC Region origin ASes present in the Internet Routing Table: 11265 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2655 LACNIC Region transit ASes present in the Internet Routing Table: 2520 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: 9226 Number of LACNIC addresses announced to Internet: 171085568 Equivalent to 10 /8s, 50 /16s and 143 /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: 34598 Total AfriNIC prefixes after maximum aggregation: 6787 AfriNIC Deaggregation factor: 5.10 Prefixes being announced from the AfriNIC address blocks: 47392 Unique aggregates announced from the AfriNIC address blocks: 14073 AfriNIC Region origin ASes present in the Internet Routing Table: 1932 AfriNIC Prefixes per ASN: 24.53 AfriNIC Region origin ASes announcing only one prefix: 698 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 41 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1298 Number of AfriNIC addresses announced to Internet: 104998144 Equivalent to 6 /8s, 66 /16s and 37 /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 11989 8762 117 CHINAMOBILE-CN China Mobile Communication 7545 6139 840 619 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4501 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4463 535 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3915 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3700 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3291 1869 102 VNPT-AS-VN VNPT Corp, VN 24560 2910 863 508 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 56046 2818 812 178 CMNET-JIANGSU-AP China Mobile communicati 4755 2182 428 188 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 13673 40974 5276 AMAZON-02, US 11492 4813 319 611 CABLEONE, US 7155 3855 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 82 SHAW, CA 174 3507 8771 861 COGENT-174, US 22773 3341 3032 167 ASN-CXA-ALL-CCI-22773-RDC, US 749 3222 54766 2473 DNIC-AS-00749, US 396982 3197 3856 433 GOOGLE-CLOUD-PLATFORM, US 16625 2930 1238 2181 AKAMAI-AS, US 4155 2874 218 1728 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 7594 1712 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3918 3395 123 AKAMAI-ASN1, NL 9009 3783 360 2105 M247, RO 12389 3119 2317 872 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2403 361 583 TELLCOM-AS, TR 212238 2320 164 1688 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1588 1852 14 TE-AS TE-AS, EG 203020 1476 163 649 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 12302 3259 577 UNINET, MX 10620 3485 474 1025 Telmex Colombia S.A., CO 13999 2524 511 349 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1371 2435 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1346 787 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1196 371 22 Telefonica del Peru S.A.A., PE 11664 1071 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1067 68 368 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1020 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 1728 660 28 RAYA-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1312 1489 356 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 24863 1227 389 20 LINKdotNET-AS, EG 37069 1086 1112 11 MOBINIL, EG 36935 832 520 43 Vodafone-, EG 36914 574 82 3 KENET-AS, KE 20011 556 153 218 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 13673 40974 5276 AMAZON-02, US 8151 12302 3259 577 UNINET, MX 9808 11989 8762 117 CHINAMOBILE-CN China Mobile Communication 12479 7594 1712 148 UNI2-AS, ES 7545 6139 840 619 TPG-INTERNET-AP TPG Telecom Limited, AU 11492 4813 319 611 CABLEONE, US 39891 4798 293 63 ALJAWWALSTC-AS, SA 18403 4501 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4463 535 311 BBIL-AP BHARTI Airtel Ltd., IN 20940 3918 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 9808 11989 11872 CHINAMOBILE-CN China Mobile Communications Grou 8151 12302 11725 UNINET, MX 12479 7594 7446 UNI2-AS, ES 7545 6139 5520 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4501 4475 FPT-AS-AP FPT Telecom Company, VN 11492 4813 4202 CABLEONE, US 9498 4463 4152 BBIL-AP BHARTI Airtel Ltd., IN 7552 3915 3888 VIETEL-AS-AP Viettel Group, VN 20940 3918 3795 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 /15:2125 /16:13747 /17:8151 /18:13424 /19:24426 /20:43795 /21:51517 /22:111586 /23:102430 /24:614891 /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 6542 7594 UNI2-AS, ES 8151 6524 12302 UNINET, MX 11492 3606 4813 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3433 3636 SHAW, CA 7155 2814 3855 VIASAT-SP-BACKBONE, US 22773 2492 3341 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2358 13673 AMAZON-02, US 30036 2277 2618 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2196 3485 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 2:1488 3:858 4:10 5:4756 6:163 7:6 8:1554 9:1 11:172 12:1340 13:463 14:2573 15:365 16:286 17:376 18:896 20:558 21:4 22:188 23:7692 24:2670 25:2 27:2787 29:19 31:3346 32:35 33:1 34:83 35:257 36:3782 37:4504 38:9477 39:927 40:251 41:4246 42:1985 43:2726 44:373 45:18659 46:5081 47:336 49:1883 50:2004 51:591 52:1549 54:323 55:1110 56:11 57:271 58:2208 59:1301 60:1171 61:2828 62:2972 63:1791 64:5530 65:2161 66:4700 67:3094 68:1071 69:3876 70:1036 71:619 72:2850 74:2779 75:1504 76:605 77:2759 78:1898 79:1692 80:2202 81:2039 82:3167 83:1434 84:1885 85:3461 86:1086 87:2121 88:1310 89:4425 90:777 91:8409 92:2707 93:2949 94:4059 95:4398 96:1448 97:309 98:954 99:695 100:71 101:1443 102:3891 103:32841 104:5216 105:803 106:972 107:2655 108:1259 109:4183 110:2241 111:3330 112:2280 113:1852 114:1968 115:2216 116:2073 117:2614 118:2980 119:1922 120:2149 121:1323 122:2786 123:2230 124:1703 125:2894 126:91 128:1580 129:960 130:1291 131:2032 132:768 133:450 134:1640 135:350 136:1445 137:1125 138:2815 139:1585 140:1631 141:1504 142:1907 143:1935 144:1188 145:564 146:2171 147:2095 148:2712 149:2935 150:1280 151:2228 152:2067 153:524 154:7619 155:1856 156:3085 157:1948 158:1349 159:2514 160:3612 161:1887 162:3849 163:2241 164:1872 165:2369 166:1524 167:2020 168:3964 169:782 170:5124 171:999 172:4227 173:3393 174:917 175:1329 176:3739 177:4694 178:3930 179:2274 180:2721 181:4124 182:3514 183:2283 184:2063 185:21548 186:5218 187:4645 188:4269 189:4351 190:9553 191:1490 192:11311 193:9463 194:7742 195:5577 196:3274 197:3184 198:6076 199:8606 200:8080 201:6387 202:10394 203:10656 204:4641 205:3584 206:4473 207:3513 208:4268 209:5123 210:4599 211:2598 212:4544 213:3808 214:1021 215:48 216:6726 217:3219 218:1371 219:395 220:2148 221:1197 222:743 223:2725 End of report