All tools
Every domain, DNS, email, web and network check on whois.me.uk, grouped by what you are trying to find out.
Domain & registry
Who owns a domain, when it expires, and whether a name is free.
WHOIS lookup
Registrar, dates, nameservers and status for any domain.
RDAP lookup
The structured registry record behind WHOIS.
Domain availability
Is the name free? Check the registry, then register it.
Domain Timeline
Every recorded change to a domain: registrar, dates, nameservers, records, certificate.
Subdomain finder
Host names seen in public certificate logs, with a check on which still resolve.
Registrar directory
Find a registrar by name, IANA ID or Nominet IPS tag.
DNS
Records, nameservers, DNSSEC and propagation.
Reputation
Blocklist scans and spoofing exposure.
MX, SPF, DKIM, DMARC, SMTP and message headers.
SPF record builder
Build a valid SPF record from the services you use.
DMARC record builder
Build a DMARC record with the right policy, reporting and alignment.
MTA-STS and TLS-RPT builder
Make senders use TLS to reach your mail servers, with reports when they cannot.
BIMI record builder
Show your logo in the inbox once DMARC is at enforcement.
MX lookup
Which servers receive mail for a domain, and are they healthy?
SPF checker
Validate SPF and count the DNS lookups before receivers do.
DKIM checker
Find published DKIM keys and check their strength.
DMARC checker
Policy, reporting and alignment in one view.
Email setup check
MX, SPF, DKIM, DMARC, MTA-STS and a live SMTP test, with a spoofability verdict.
Header decoder
Paste a message header and see the route, delays and authentication results.
DMARC report analyser
Upload aggregate reports and see who sends as your domain and what passes.
DMARC report monitoring
Send your aggregate reports to us and read a dashboard instead of XML.
Open relay test
Does your mail server accept mail for other domains? Owners only.
Email address checker
Is this address real? Syntax, mail servers, disposable and role checks, plus a live mailbox probe.
Network & IP
Ownership, AS numbers, reverse DNS, ping and traceroute.
CIDR calculator
Network, range, mask, usable hosts and reverse zone for any prefix.
Port checker
Which TCP ports answer from the internet, with service banners.
Ping
ICMP reachability and latency from London.
Traceroute
The path packets take from London to a host.
IP lookup
Who holds an address, which network announces it, and what its reverse DNS says.
AS number lookup
Name, country and registry for an autonomous system.
Web & TLS
Reachability, redirects, certificates and security headers.