NETWORK TOOLS
WHOIS lookup for domains and IPs
Find out who a domain is registered with, when it expires and which nameservers it uses, or who owns an IP address range.
Domains
Shows the registrar, registration and expiry dates, status and nameservers. Personal details are usually hidden for privacy.
IP addresses
Shows the network name, owning organisation, address range, country and abuse contact for any public IP address.
How it works
We use RDAP, the modern replacement for WHOIS, which gets the data directly from the domain registry or regional internet registry.
MORE TOOLS
Other network tools
What is my IP?
See your public IP address and its hostname.
DNS lookup
See A, MX, TXT, NS and other records for any domain, or reverse DNS for an IP.
Email health check
Check MX, SPF, DKIM and DMARC in one go, with plain-English fixes.
Blacklist check
See if your mail server is on Spamhaus, Barracuda, SpamCop and other blacklists.
SSL checker
Check who issued a certificate, when it expires and whether it’s trusted.
FREE IT REVIEW
Need help with your network or email?
Tell us a little about your business and we'll come back within one working day to arrange a review, on site or over Teams. No hard sell, just a clear picture of where your IT stands.
Prefer to talk? Call 0161 660 7471 or email hello@posilan.com