NetBlocks Internet Performance Monitor checks network connectivity and performance issues.
Check-Host
Check-Host monitors websites and checks servers, IP addresses, and host availability.

About Check-Host
Check-Host is an online tool for checking availability of websites, servers, hosts and IP addresses. It provides domain and IP location data from geolocation databases and whois, including country, city, ISP and organization.
It offers ping, HTTP, DNS and TCP/UDP port checks from servers in different locations, a subnet calculator for converting between IP ranges and CIDR, web access to live Linux or Windows servers for diagnostics, and API documentation for building custom monitoring.
Key features
- Look up IP geolocation including country, city, ISP and organization
- Test host reachability, latency and packet loss with ping
- Check website response and availability from multiple locations
- Retrieve A, AAAA and PTR records with TTL globally
- Check TCP and UDP connectivity to specified host ports
- Access live Linux or Windows servers over the web for diagnostics
- Performs ping, HTTP and DNS checks from servers in multiple countries
- Combines availability checks with IP geolocation, whois and subnet calculation
- Provides API documentation for building custom monitoring solutions
Check-Host at a glance
- Website
- check-host.net
- Category
- Development › Network Tools
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Linux, Web, Windows
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Check-Host alternatives
Tools and sites you could use instead, ranked by how closely they match.
CanYouSeeMe checks whether an internet connection has an open port and verifies port forwarding.
Check whether network ports are open and test port forwarding or router connectivity with PortCheckers.
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Host DNS records for domains with Hurricane Electric’s free DNS service.
Find the IPv4 and IPv6 addresses for Cloudflare 1.1.1.1 and its family DNS resolvers in the service documentation.
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