Autonomous System

AS45903 CMC Telecom Infrastructure Company

ISPActiveVietnamAPNIC

AS45903 (CMCTELECOM-VN) is an ISP network operated by CMC Telecom Infrastructure Company in Vietnam, registered with APNIC. It has 353 IPv4 prefixes with 186,112 addresses and 133 IPv6 prefixes, which makes it the 1,375th largest of 82,558 active autonomous systems by IPv4 space.

IPv4 addresses186,112in 353 prefixes
IPv6 prefixes133≈ 3.2 × 10²⁸ addresses
Size rank#1,375of 82,558 active ASNs
Abuser scoreLow0.18% of its addresses flagged · method

Details

OrganizationCMC Telecom Infrastructure Company
AS nameCMCTELECOM-VN
Websitecmctelecom.vn
Country Vietnam (VN)
Network typeISP
RegistryAPNIC
Abuse contacthm-changed@vnnic.vn
Registered—
Last updated2025-05-16

IPv4 prefixes

353 prefixes · 186,112 addresses
NetworkAddressesFirst – last address
42.96.32.0/198,19242.96.32.0 – 42.96.63.255
113.20.96.0/198,192113.20.96.0 – 113.20.127.255
183.91.0.0/204,096183.91.0.0 – 183.91.15.255
183.91.16.0/204,096183.91.16.0 – 183.91.31.255
101.99.0.0/212,048101.99.0.0 – 101.99.7.255
101.99.8.0/212,048101.99.8.0 – 101.99.15.255
101.99.16.0/212,048101.99.16.0 – 101.99.23.255
101.99.24.0/212,048101.99.24.0 – 101.99.31.255
101.99.32.0/212,048101.99.32.0 – 101.99.39.255
101.99.48.0/212,048101.99.48.0 – 101.99.55.255
101.99.56.0/212,048101.99.56.0 – 101.99.63.255
115.165.160.0/212,048115.165.160.0 – 115.165.167.255
183.91.8.0/212,048183.91.8.0 – 183.91.15.255
183.91.16.0/212,048183.91.16.0 – 183.91.23.255
183.91.24.0/212,048183.91.24.0 – 183.91.31.255
203.171.24.0/212,048203.171.24.0 – 203.171.31.255
203.205.16.0/212,048203.205.16.0 – 203.205.23.255
203.205.24.0/212,048203.205.24.0 – 203.205.31.255
203.205.32.0/212,048203.205.32.0 – 203.205.39.255
203.205.40.0/212,048203.205.40.0 – 203.205.47.255
203.205.48.0/212,048203.205.48.0 – 203.205.55.255
203.205.56.0/212,048203.205.56.0 – 203.205.63.255
42.96.40.0/221,02442.96.40.0 – 42.96.43.255
42.96.44.0/221,02442.96.44.0 – 42.96.47.255
45.122.232.0/221,02445.122.232.0 – 45.122.235.255
The 25 largest of 353. The API and the database have all of them.

IPv6 prefixes

133 prefixes
  • 2402:5300::/35
  • 2402:5300:2000::/35
  • 2402:5300:4000::/35
  • 2402:5300:1000::/40
  • 2402:5300:1100::/40
  • 2402:5300:1300::/40
  • 2402:5300:1400::/40
  • 2402:5300:1500::/40
  • 2402:5300:1600::/40
  • 2402:5300:400::/42
  • 2402:5300:2000::/42
  • 2402:5300:4000::/42
  • 2402:5300:500::/44
  • 2402:5300:600::/44
  • 2402:5300:700::/44
  • 2402:5300:800::/44
  • 2402:5300:900::/44
  • 2402:5300:1200::/44
  • 2402:5300:2100::/44
  • 2402:5300:2200::/44
  • 2402:5300:2300::/44
  • 2402:5300:4100::/44
  • 2402:5300:4200::/44
  • 2402:5300:4300::/44
  • 2402:5300:4400::/44
The 25 largest of 133. The API and the database have all of them.

Query AS45903 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS45903&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS45903, with or without a key:

curl "https://api.ipapi.is/?q=42.96.32.1"

Other networks of CMC Telecom Infrastructure Company

AS38732 CMC Telecom Infrastructure Company11,520 IPv4 addressesAS38733 CMC Telecom Infrastructure Company11,264 IPv4 addresses

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