DNS
lookup.
Check A, AAAA, CNAME, MX, TXT, NS, SOA, and CAA records for any domain in real time. Free, no login, powered by DNS-over-HTTPS.
No account required to use this tool.
What do these records mean? Every DNS record type explained, with a lookup for any record type and a checker that explains each part. Lookups by type: MX lookup, TXT record lookup, NS lookup, CNAME lookup, A record lookup.
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OpenFrequently asked questions
Is there a DNS lookup MCP server?
Yes. This lookup is the dns_lookup tool in the Lemon Domains MCP server, so Claude, ChatGPT, Cursor and any MCP client can read and explain a domain's DNS records. The same lookup is in the REST API and the lemon command line.
What is a DNS lookup?
A DNS lookup queries the Domain Name System for the records attached to a domain: where it points (A and AAAA), its mail servers (MX), text records like SPF and verification tokens (TXT), its nameservers (NS), and more. This tool fetches them live over DNS-over-HTTPS.
Which record types does it check?
By default A, AAAA, CNAME, MX, TXT, NS, SOA and CAA, queried in parallel. Pick a type to look up any of 30, including SRV, HTTPS, PTR, DS, DNSKEY and TLSA. Each record comes with a plain-English line on what it does.
Is the lookup live?
Yes. Every query hits a public resolver in real time, so you see current DNS data, subject to caching and TTLs along the way. There is no account and no rate limit for normal use.
Why do I see no records for a domain?
Either the domain has no public DNS configured, the name is misspelled, or the record type simply is not set. A registered domain with no A or MX records is common for parked or newly registered names.
Can I monitor a domain after checking it?
Yes. Add it to Lemon Domains to track expiry and registrar across your whole portfolio, so a domain never lapses while you are busy reading its DNS.
Connect every domain you own to your AI.
Create a free account, connect your registrars, and add one line to Claude Code, Cursor or any MCP client.