Alternatives to DNSsy

A free website that tests a domain's DNS health and offers live DNS, reverse, WHOIS and ping lookups. The listings below can replace it for an important use case. Each note says what changes if you switch.

  • DNSsy

    A free website that tests a domain's DNS health and offers live DNS, reverse, WHOIS and ping lookups.

    FreeProprietaryWeb

Replacements

Listings that take over the same core job as DNSsy.

  • intoDNS

    A free web tool that checks a domain's DNS and mail server health and configuration.

    FreeProprietaryWeb

    intoDNS gives a single DNS and mail server health report with fix suggestions linked to protocol documentation, without live WHOIS or ping lookups.

  • Zonemaster

    An open-source DNS validation tool that checks a domain's delegation and zone for configuration errors.

    FreeOpen sourceWebSelf-hosted

    Zonemaster is open source, tests the whole delegation path with DNSSEC checks, can be self-hosted, and has a web interface in several languages.

  • MXToolbox

    A web-based suite of DNS, MX, SPF, DMARC and blacklist lookups for diagnosing email delivery.

    FreemiumProprietaryWeb

    MXToolbox offers a larger suite of DNS, MX, SPF, DMARC and blacklist lookups, with each check run separately and prompts for its paid service.

  • ViewDNS.info

    A web collection of more than 20 DNS, IP and domain lookup tools, with a paid API.

    FreemiumProprietaryWeb

    ViewDNS.info collects more than 20 DNS, IP and WHOIS tools with historical data and a paid API, without a single scored health report.

  • DNSChecker

    A web tool that checks DNS propagation by querying public resolvers in many countries.

    FreeProprietaryWeb

    DNSChecker shows what public resolvers in many countries return for a record, useful for propagation, but does not diagnose configuration errors.

Similar software

Related functionality, not a direct replacement.