by hostcloud.ie
Free DNS diagnostics

Free DNS & email diagnostic tools

Check mail routing, DNS records and domain authentication in seconds. Pick a test, enter a domain or IP, and get a clear report — including which nameserver answered.

About Free DNS & email diagnostic tools

These free DNS tools are built for IT admins, developers and anyone troubleshooting email delivery or domain setup. Results are queried from the domain’s authoritative nameservers whenever possible, so you see what the internet actually publishes — not just a cached resolver view.

Start with an MX lookup if mail is bouncing, an SPF or DMARC check if messages land in spam, or a reverse DNS lookup when you need the PTR for an IP. Each tool page explains what the records mean and how to read the report.

Frequently asked questions

What DNS tools are available here?

MX, A/AAAA, reverse PTR, NS, SOA, TXT, CNAME, SPF, DMARC, DKIM, WHOIS, blacklist (RBL) checks and SMTP banner tests.

Are these DNS tools free?

Yes. Lookups on dnstools.hostcloud.ie are free to use. The site is provided by Host Cloud, an Irish domain and hosting company.

Where do the DNS results come from?

Reports query authoritative nameservers for the domain (for example Cloudflare NS such as veronica.ns.cloudflare.com) and show that source at the bottom of the report.