Domain Expiry Checker
Look up a domain’s expiry date, registrar, status and name servers via RDAP.
DNS Lookup
Query DNS records for any domain through Cloudflare or Google public DNS over HTTPS. Check a new record, a mail setup or a TXT verification value without opening a terminal.
- Free
- No sign-up
- Runs in your browser
DNS record types
| Type | What it does |
|---|---|
| A | Maps a name to an IPv4 address. |
| AAAA | Maps a name to an IPv6 address. |
| CNAME | Makes a name an alias of another name. |
| MX | Mail servers for the domain, with a priority (lower numbers are tried first). |
| TXT | Free-form text, used for SPF, DKIM, DMARC and domain verification. |
| NS | The authoritative name servers for the zone. |
| CAA | Which certificate authorities may issue certificates for the domain. |
| SOA | Zone details: primary name server, admin contact, serial number and timers. |
| SRV | Host and port for a service, such as _sip._tcp.example.com. |
| PTR | Reverse DNS, maps an IP address back to a name. |
How to use the DNS Lookup
- Enter a domain or hostname.
- Choose a record type, or Common to query several at once.
- Pick a resolver.
- Review each record’s value and TTL.
Never miss an expiry again
SensaCat watches SSL certificates, domain registrations and credentials, and reminds your team well before anything expires.
Frequently asked questions
Resolvers cache records for their TTL, so until the old record’s TTL expires a resolver can keep returning the old answer. Also check that you edited the zone on the name servers the domain actually uses.
An A record maps a name directly to an IPv4 address (AAAA does the same for IPv6). A CNAME record makes a name an alias of another name, which is then resolved. A name with a CNAME record can’t have other records.
The domain name doesn’t exist in DNS. Check for typos, and check that the domain is registered and delegated to working name servers.
Your browser queries Cloudflare (1.1.1.1) or Google Public DNS directly over HTTPS. Results reflect public DNS, which can differ from a private or split-horizon setup.
Related tools
SSL Certificate Checker
See who issued a site’s certificate, when it expires and which hostnames it covers.
HTTP Headers Checker
Follow a URL’s redirects, list its response headers and grade its security headers.