Delimiter.live
Network & Web Tools Runs on our server Free · no account

DNS Lookup

The DNS lookup tool queries the public Domain Name System for a hostname and returns the records it finds, with their TTL values. Because a browser cannot make DNS queries, the lookup is performed by our server.

Enter the domain on its own. A scheme such as https:// and any path are removed automatically.

Record types
Reset

Runs on our server. Processing happens securely on our server. What you enter is sent to Delimiter.live to produce the result and is not stored in a database.

How to use the DNS Lookup

  1. Enter a domain name, with or without the scheme — https:// and a trailing slash are stripped automatically.
  2. Select the record types you want. A, MX and TXT cover most day-to-day checks.
  3. Read the results, including the TTL, which tells you how long resolvers will cache each record.

Example

Input
example.com, record type MX
Output
Host: mail.example.com | Priority: 10 | TTL: 3600

Common use cases

  • Checking that a domain points at the right server after a migration.
  • Verifying SPF, DKIM and DMARC records, which are stored as TXT records.
  • Confirming which mail servers accept mail for a domain.
  • Finding the authoritative name servers before a DNS change.

Limitations and things to watch for

  • The result reflects what our server resolver sees, including its cache. Immediately after a change you may still get the old record until the TTL expires; the TTL column tells you how long that will take.
  • DNS propagation is not a single global event. Different resolvers around the world update at different times, so a change can be visible here and not yet elsewhere.
  • Only public DNS records are returned. Internal or split-horizon DNS is not visible from the internet.
  • PTR records are looked up by name; to check reverse DNS for an address you must query its .in-addr.arpa name.

Frequently asked questions

Why do I still see the old record after making a change?
Resolvers cache records for the length of their TTL. Until that expires, the previous value is served from cache. Lowering the TTL before a planned change shortens the wait.
How do I check my SPF or DMARC record?
Both are TXT records. Select TXT for your domain to see SPF, and query _dmarc.yourdomain.com for the DMARC policy.
Does this run in my browser?
No. Browsers have no DNS API, so the query is made by our server. Only the domain you type is sent; lookups are cached briefly and are not stored in a database.
What does the TTL mean?
Time To Live, in seconds — how long a resolver may cache the record before asking again. A TTL of 3600 means up to an hour of caching.

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