AS45903 CMC Telecom Infrastructure Company

CMCTELECOM-VN - CMC Telecom Infrastructure Company · registered in Vietnam

IPv4 addresses82,17270 prefixes · 0.003% of announced IPv4

Rank in Vietnam#8largest network in VN by IPv4 space, of 539 · 0.51% of VN

Rank worldwide#2,152of 79,396 networks with IPv4

IPv624,317 x /48138 prefixes

CountryVietnam551 ASNs registered there

Open AS45903 in ASN lookup Look up an IP in this network (42.96.38.1) All networks in Vietnam

IPv4 prefixes

All 70 prefixes, in address order.

42.96.38.0/23
42.96.40.0/21
42.96.48.0/21
42.96.56.0/22
42.96.60.0/23
42.96.62.0/24
45.122.232.0/23
45.122.234.0/23
45.122.236.0/22
45.122.240.0/22
45.122.245.0/24
45.122.246.0/23
45.122.248.0/22
45.122.252.0/24
45.122.254.0/23
101.99.0.0/23
101.99.2.0/24
101.99.4.0/22
101.99.8.0/24
101.99.9.0/24
101.99.10.0/23
101.99.12.0/22
101.99.16.0/20
101.99.32.0/19
103.9.196.0/22
103.63.104.0/22
103.63.110.0/23
103.63.112.0/21
103.63.120.0/22
103.108.132.0/22
103.224.168.0/22
103.229.40.0/22
103.246.220.0/22
113.20.96.0/19
115.165.160.0/24
115.165.166.0/24
119.82.129.0/24
119.82.130.0/23
119.82.132.0/24
119.82.134.0/23
119.82.136.0/23
119.82.138.0/24
119.82.139.0/25
119.82.139.128/26
119.82.139.192/29
119.82.139.204/30
119.82.139.208/28
119.82.139.224/27
119.82.140.0/22
124.158.14.0/24
144.48.24.0/22
162.4.8.0/23
163.52.14.0/23
183.91.0.0/21
183.91.8.0/22
183.91.12.0/23
183.91.15.0/24
183.91.16.0/20
202.134.16.0/21
203.171.16.0/21
203.171.24.0/22
203.171.28.0/23
203.171.30.0/23
203.205.0.0/22
203.205.5.0/24
203.205.6.0/23
203.205.8.0/22
203.205.12.0/23
203.205.16.0/20
203.205.32.0/19

IPv6 prefixes

All 138 prefixes.

2001:df7:6640::/48
2402:5300::/38
2402:5300:400::/46
2402:5300:404::/47
2402:5300:406::/48
2402:5300:408::/45
2402:5300:410::/44
2402:5300:420::/43
2402:5300:440::/42
2402:5300:480::/41
2402:5300:500::/47
2402:5300:502::/47
2402:5300:504::/46
2402:5300:508::/45
2402:5300:510::/44
2402:5300:520::/43
2402:5300:540::/42
2402:5300:580::/41
2402:5300:600::/48
2402:5300:601::/48
2402:5300:602::/47
2402:5300:604::/46
2402:5300:608::/45
2402:5300:610::/44
2402:5300:620::/43
2402:5300:640::/42
2402:5300:680::/41
2402:5300:700::/44
2402:5300:710::/44
2402:5300:720::/43
2402:5300:740::/42
2402:5300:780::/41
2402:5300:800::/44
2402:5300:810::/44
2402:5300:820::/43
2402:5300:840::/42
2402:5300:880::/41
2402:5300:900::/44
2402:5300:910::/44
2402:5300:920::/43
2402:5300:940::/42
2402:5300:980::/41
2402:5300:a00::/39
2402:5300:c00::/38
2402:5300:1000::/39
2402:5300:1200::/44
2402:5300:1210::/44
2402:5300:1220::/43
2402:5300:1240::/42
2402:5300:1280::/41
2402:5300:1300::/40
2402:5300:1400::/38
2402:5300:1800::/37
2402:5300:2000::/42
2402:5300:2040::/42
2402:5300:2080::/41
2402:5300:2100::/45
2402:5300:2108::/47
2402:5300:210a::/48
2402:5300:210b::/48
2402:5300:210c::/46
2402:5300:2110::/44
2402:5300:2120::/43
2402:5300:2140::/42
2402:5300:2180::/41
2402:5300:2200::/44
2402:5300:2210::/44
2402:5300:2220::/43
2402:5300:2240::/42
2402:5300:2280::/41
2402:5300:2300::/44
2402:5300:2310::/44
2402:5300:2320::/43
2402:5300:2340::/42
2402:5300:2380::/41
2402:5300:2400::/44
2402:5300:2410::/44
2402:5300:2420::/43
2402:5300:2440::/42
2402:5300:2480::/41
2402:5300:2500::/40
2402:5300:2600::/39
2402:5300:2800::/37
2402:5300:3000::/36
2402:5300:4000::/46
2402:5300:4004::/46
2402:5300:4008::/48
2402:5300:400a::/47
2402:5300:400c::/46
2402:5300:4010::/44
2402:5300:4022::/47
2402:5300:4024::/46
2402:5300:4028::/45
2402:5300:4030::/44
2402:5300:4040::/42
2402:5300:4080::/41
2402:5300:4100::/44
2402:5300:4110::/44
2402:5300:4120::/43
2402:5300:4140::/42
2402:5300:4180::/41
2402:5300:4200::/47
2402:5300:4202::/47
2402:5300:4204::/46
2402:5300:4208::/45
2402:5300:4210::/44
2402:5300:4220::/43
2402:5300:4240::/42
2402:5300:4280::/41
2402:5300:4300::/45
2402:5300:4308::/48
2402:5300:4309::/48
2402:5300:430a::/47
2402:5300:430c::/46
2402:5300:4310::/44
2402:5300:4320::/43
2402:5300:4340::/42
2402:5300:4380::/41
2402:5300:4400::/44
2402:5300:4410::/44
2402:5300:4420::/43
2402:5300:4440::/42
2402:5300:4480::/41
2402:5300:4500::/44
2402:5300:4510::/44
2402:5300:4520::/43
2402:5300:4540::/42
2402:5300:4580::/41
2402:5300:4600::/44
2402:5300:4610::/44
2402:5300:4620::/43
2402:5300:4640::/42
2402:5300:4680::/41
2402:5300:4700::/40
2402:5300:4800::/38
2402:5300:4c00::/39
2402:5300:4f00::/40
2402:5300:5000::/36

Other ASNs named CMC Telecom Infrastructure Company

2 other networks use the same organisation name; together with AS45903 they announce 98,556 IPv4 addresses.

ASNNameIPv4 addresses

AS38732CMCTELECOM-VN - CMC Telecom Infrastructure Company VN9,216

AS38733CMCTELECOM-VN - CMC Telecom Infrastructure Company VN7,168

Similar-sized networks in Vietnam

ASNNameIPv4 addresses

AS45543#5 SCTV-AS-VN - SaiGon Tourist cable Televition Company196,602

AS135905#6 VNPT-AS-VN - VIETNAM POSTS AND TELECOMMUNICATIONS GROUP134,656

AS7602#7 SPT-AS-VN - Sai gon Postel Corporation108,522

AS24173#9 NETNAM-AS-AP - Netnam Company64,766

AS38731#10 VTDC-AS-VN - Vietel - CHT Compamy Ltd62,976

AS131429#11 MOBIFONE-AS-VN - MOBIFONE Corporation59,584

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources