Free Domain Tools
Everything you need to research, analyze, and troubleshoot domain names — completely free, no sign-up required. All tools use real-time data.
Bulk Domain Availability Checker
Paste up to 100 domains and check availability, registrar, dates, and the cheapest registration price per TLD — all in one batch. Powered by RDAP.
Bulk WHOIS, batch domain check, domain availability, multiple domains
WHOIS Lookup
Find domain registration details including registrar, creation date, expiry, name servers, and ownership information. Uses real-time RDAP data.
Domain owner, registrar, expiration date, name servers
DNS Lookup
Check DNS records for any domain. View A, AAAA, MX, TXT, NS, CNAME, and SOA records with TTL values. Powered by Cloudflare DNS.
DNS records, A record, MX record, name servers, TTL
Domain Age Checker
Find out exactly how old any domain is. See the original registration date, last update, and expiration. Useful for SEO analysis and domain valuation.
Domain age, registration date, SEO authority, domain history
SSL Certificate Checker
Verify SSL/TLS certificate details for any website. Check issuer, validity dates, encryption strength, and Subject Alternative Names.
SSL certificate, HTTPS, TLS, encryption, certificate authority
IP Address Lookup
Look up any IP address or domain to find its geolocation, ISP, organization, AS number, and timezone. Accepts both IP addresses and domain names.
IP geolocation, ISP lookup, AS number, reverse DNS
About Our Tools
All tools on DomainNameServices.net query live data sources in real time. DNS lookups use Cloudflare's DNS-over-HTTPS infrastructure. WHOIS data comes from RDAP (Registration Data Access Protocol) — the modern, standardized replacement for traditional WHOIS. SSL checks verify actual certificates, and IP lookups use geolocation databases updated daily.
Results are cached briefly at the edge (5 minutes for DNS, 1 hour for WHOIS and SSL, 24 hours for IP geolocation) to ensure fast response times. All tools are free to use. Excessive automated queries may be rate-limited by upstream data providers.
Related Resources
This page lists all six utilities on the site, covering domain and DNS lookups. Every tool is free and does not require an account.
Six distinct checks, one set of inputs
The tools cover the main checks you might run on a domain: bulk availability, WHOIS, DNS, domain age, SSL certificate, and IP address. Each accepts a domain name (or list of domains for the bulk checker) and returns results in a straightforward format. Since none of the tools require signup, you can run a check immediately without creating a profile. This is useful for quick verification before you commit to a registrar or when troubleshooting a configuration.
Bulk availability for portfolio checks
The bulk domain checker lets you paste multiple domains at once and see which are available. This is practical for comparing name ideas across the 3,431 TLDs listed on the site. If you are evaluating a batch of domains, this tool saves the time of checking them one by one. The results are presented in a clear list, so you can quickly spot which names are still open and which are already taken.
WHOIS and domain age for ownership details
The WHOIS lookup returns registration information for a domain, such as the registrar and creation date. The domain age checker takes that creation date and calculates how long the domain has been registered. These two tools together give you a picture of a domain's history. You can use them to verify a seller's claims about a domain's age or to see if a domain has been recently transferred, which might affect your decision to buy.
DNS and IP lookups for technical checks
The DNS lookup tool queries the current DNS records for a domain, covering A, AAAA, MX, NS, and similar record types. The IP address lookup resolves a domain to its IP address and shows basic details about that address. These tools are useful for confirming whether your DNS changes have propagated or for diagnosing why a site is not resolving. They give you raw data without extra commentary, so you can interpret the results in the context of your own setup.
SSL certificate checker for security verification
The SSL certificate checker examines the certificate presented by a domain's web server. It tells you whether the certificate is valid, its issuer, and its expiration date. This is a quick way to verify that a site is using HTTPS correctly or to check if a certificate is about to expire. Since the tool works on any public domain, you can use it on your own sites or on others you are evaluating.