Cost / License
- Free
- Open Source (AGPL-3.0)
Platforms
- Online
Germany
EU




Sites and apps similar to DNS Check include Domain Digger, which is free and open source. Other options are Pingdom, MxToolBox, Uptime.com and ip.me. You can choose from more than 10 Uptime Monitor Services like DNS Check for Mac, Windows, Linux, Chrome OS and self-hosting.




Tracks uptime, downtime, and page speed with synthetic and real user monitoring, simulates critical flows, analyzes visitor data by location, device, and browser, sends instant alerts, and provides analytics and reporting to troubleshoot and optimize sites.




All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. Input a domain name or IP Address or Host Name. Links in the results will guide you to other relevant tools and information.


Real-time monitoring with checks every minute from over 30 global locations, alerts for outages or slowdowns, detailed uptime and response time reports, customizable alerts, public status pages, SSL and domain monitoring, and REST API for automation.





Monitor your website, server, API, application, service and get notified if your resources have some problems with availability. Upzilla notifies you in Slack, Telegram, Messenger, or by email. Works also as a public status page with subscriptions.




A simple web application for looking up WHOIS, IP, and ASN information using free APIs. The application automatically detects the type of query and provides formatted results with a clean, modern UI that supports both light and dark modes.


OneDollarDNS monitors your domain’s DNS records and alerts you when their values change. It automatically discovers records and monitors both discovered and manually added records, including A, AAAA, MX, TXT, CNAME, NS, and other common record types.
NsLookup shows all the DNS records for the website you're visiting. It has support for popular DNS servers like Google DNS, CloudFlare DNS and OpenDNS, but also local DNS servers all over the world.


SPFtoolbox is an open-source Javascript and PHP app to look up DNS records such as SPF, MX, Whois, and more


Check DNS Propagation worldwide. DNS Checker provides name server propagation check instantly. Changed nameservers so do a DNS lookup and check if DNS and nameservers have propagated.
