WHOIS & Domain Lookup
Check domain registration dates, registrar details, and nameservers. Explore DNS records and RDAP data with our free lookup tools.
Comprehensive Domain & IP Information
Instantly look up registration data, contact details, nameservers, DNS records, and more for any domain name or IP address using WHOIS and RDAP protocols.
🔍 What is WHOIS?
Check publicly available registration data, including registrar details, creation and expiration dates, nameservers, and domain status. Owner contact details may be redacted for privacy.
Try WHOIS lookup📋 What is RDAP?
Look up structured registration data using RDAP. Availability and the fields returned depend on the registry; some TLDs do not provide an RDAP service.
Try RDAP lookup🌐 What is DNS?
Inspect available DNS records such as A, AAAA, CNAME, MX, NS, TXT, and SOA to investigate website and email settings. Results may be cached, so recent changes may not appear immediately.
Try DNS lookup📡 What is Uptime Monitoring?
Track whether a website is reachable and monitor its availability over time. Get instant status checks, response details, and historical uptime data to catch outages early.
Check uptime📅 What are Domain Events?
Track domain names that are expiring or being deleted. Browse recently expired and soon-to-drop domains to spot backordering opportunities or plan your next acquisition.
View expiring domains🛠 What are Diagnostic Tools?
Run ping, traceroute, and MTR from our servers to investigate reachability, latency, and network paths. Missing replies from an intermediate router do not necessarily mean traffic is being lost.
Run diagnosticsDomain, DNS & Hosting Guides
Featured advice and practical guides for domains, DNS, hosting and websites.
Hosting for a small website: static hosting, managed hosting or a VPS?
Compare hosting options by website type, maintenance responsibility and total cost. Understand when static hosting, a managed website plan or a VPS fits your project.
DNS changed but your website still points to the old server
Compare resolver and authoritative answers, record useful evidence, and separate a DNS change from a website problem.
What to record first when your website goes down
Record the exact URL, time, error and check location before changing settings, then use the same observations to confirm recovery.
SSHFP Records, Explained: Let DNS Vouch for Your SSH Host Key
The first time you SSH into a server, OpenSSH asks you to trust a fingerprint you probably never verified. SSHFP records publish that fingerprint in DNS — and with DNSSEC, the client can check it for you.
How to Set Up a DMARC Record: From p=none to Full Enforcement
DMARC ties SPF and DKIM to the domain your recipients actually see, then tells receivers what to do with mail that fails. Here is what each tag does and how to roll out p=none to p=reject without breaking your own mail.
Upgraded Your VPS Plan but the Disk Still Shows the Old Size? Grow the Partition Online
You upgraded your VPS plan and the disk is bigger in the control panel, but df -h still shows the old size. The space is sitting one layer below the filesystem: extend the partition with growpart, then grow the filesystem — usually with no reboot.