DNS Lookup Tool

Query DNS records for any domain

DNS Records

TypeNameValueTTL

Domain Information

Registrar: N/A

Created: N/A

Expires: N/A

Server Information

IP: N/A

Location: N/A

ISP: N/A

Lookup History

  • No lookup history yet

💡 Tip of the Day

Keep backups before major updates.

What is DNS Lookup Tool

DNS Lookup Tool helps you inspect DNS records in seconds. Troubleshooting a domain, checking email setup, or verifying a migration can be slow if you jump between multiple tools. The free DNS Lookup Tool by FlexiTools.io gives you a clean input for the domain, quick record-type selection, and a readable table of results. In the next 60 seconds, you can enter a domain, pick a record type, run the lookup, copy the results, and export a CSV you can share or archive.

How to Use Our DNS Lookup Tool

  1. Enter a domain and run the lookup
  • Type a valid domain (example.com) in the field and click the Lookup button. Press Enter to run the lookup even faster.
  1. Choose a record type
  • Use the record-type tabs to select what you want to see. Switching types updates results for the same domain without retyping.
  1. Read the results
  • The table lists Type, Name, Value, and TTL for each record returned. When an A record is present, the tool also shows basic server info like IP and, where available, general location and ISP.
  1. Copy, export, and reuse history
  • Click Copy results to grab the table as plain text or Export CSV to download it. Your last lookups appear in History - click any item to re-run it, or use Clear history to remove saved entries from your browser.

Why FlexiTools.io Offers the Best DNS Lookup Tool

Fast lookups with clear output

Readable columns (Type, Name, Value, TTL) make it easy to spot issues like missing A records, misrouted CNAMEs, or short TTLs.

Copy and CSV without friction

Share findings in a ticket or doc with one click. Copy results gives you a clean text block; Export CSV is ready for spreadsheets.

Smart, keyboard-friendly workflow

Press Enter to run lookups and switch record types to refresh instantly for the same domain. Short error messages keep you on track.

Local history for quick repeat checks

The tool keeps a recent, clickable history in your browser. Re-run a past query in one step or clear it at any time.

FlexiTools.io vs typical alternatives

  • FlexiTools.io: Copy and CSV built-in - Alternatives: Manual copy or extra steps
  • FlexiTools.io: Clickable history on-device - Alternatives: No quick recall
  • FlexiTools.io: Clear validation and status messages - Alternatives: Vague errors
  • FlexiTools.io: API-ready UI for teams - Alternatives: Rigid, no integration path

A Deeper Look at DNS Records and Querying

What DNS does for you

DNS maps human-friendly names to technical endpoints. When you visit a site, your device asks a resolver to find the records for the domain. The resolver fetches answers from authoritative name servers and returns the data to your browser or app. Wondering why a new record seems visible on one device but not another? That’s almost always caching at work.

Record types you’ll see

  • A and AAAA map a name to an IPv4 or IPv6 address. If a site loads slowly or not at all, start here.
  • CNAME points one name to another name. It’s a clean way to alias subdomains. If you see a CNAME, check the target’s A or AAAA records too.
  • MX lists mail servers plus a preference number. If email bounces, verify the MX values first.
  • TXT stores free-form text. Common uses include SPF, DKIM, and site verifications.
  • NS tells you which servers are authoritative for a zone. If data differs across lookups, check that you’re using the intended name servers.
  • SRV can direct traffic for specific services and ports.

Your results table shows the raw answers returned for the selected record type. Need to follow a chain? For example, if CNAME points to another host, switch the type to A or AAAA to see the final addresses.

TTL and “propagation”

TTL (time to live) tells resolvers how long they may cache an answer. Short TTLs (for example, 60–300 seconds) help changes appear sooner but create more lookups. Longer TTLs reduce resolver load but make updates take longer to spread. What people call “propagation” is mostly a combination of cached answers expiring at different times. If you update records before a cutover, lowering the TTL ahead of time speeds up the switch.

Name, value, and formatting details

  • Type identifies the record kind (A, AAAA, CNAME, MX, TXT, NS, SRV).
  • Name is the fully qualified domain name the record applies to. You may see a trailing dot depending on how a resolver formats it.
  • Value is the answer payload - an IP, a hostname, a preference plus target (for MX), or text.
  • TTL is the remaining time (in seconds) that an answer may be cached by a resolver.

If a lookup returns no Answer for a specific type, it doesn’t always mean the domain is broken. The record might not exist (for example, no AAAA yet), or another type is used instead.

Why results can differ

Resolv ers cache answers independently, and networks sometimes block or rewrite certain responses. A misconfigured zone, stale caches, or an unexpected CNAME chain can make two checks look different for a while. If you must verify the very latest data, check authoritative servers directly or wait for the TTL to pass.

Save and share your findings

Copying the results as text is perfect for a quick message: you’ll get headers and rows in a readable block. Exporting CSV helps with audits, change logs, and support tickets. You can attach the file and avoid accidental edits. Need to re-run a test later? Click the item in History to run the same domain and record type again.

For background on concepts used here, see MDN’s glossary entry on DNS and resolvers (search for the MDN glossary on DNS), and the overview of CNAME records in the MDN glossary. These explain core ideas like name resolution and record aliasing in plain terms.

Practical scenarios

  • New website: Confirm A or AAAA for the root and key subdomains; verify CNAMEs for “www” and app subdomains.
  • Email issues: Check MX records and related TXT records (SPF, DKIM) for the sending domain.
  • CDN or proxy: You’ll often see a CNAME to an edge hostname. Verify that the target resolves and that TTLs match your change windows.

If you want to connect this interface to your own backend or resolver, the UI is API-ready - you can wire it up later without changing the workflow your team uses.

Pro-Tips for Getting the Most Out of DNS Checks

  • Before a migration, lower TTL for the records you will change. After the cutover, raise TTL again to reduce load.
  • If a CNAME is present, also check A or AAAA for the target to confirm the full chain resolves.
  • Save a CSV before making changes. After the update, run the same query and compare to confirm the new state.
What record types can I check?
Use the record-type tabs in the interface to select the type you need. Commonly used types include A, AAAA, CNAME, MX, TXT, and NS. The results table updates for the selected type. If a type has no data, you’ll see a short message.
Why don’t my changes show up right away?
Caches respect each record’s TTL. Until the cached answer expires, some resolvers will keep returning the old value. Give it time equal to the TTL you set, then check again. Lower TTLs before planned changes for quicker updates.
What do Type, Name, Value, and TTL mean?
Type is the record kind (such as A or MX). Name is the domain label the record applies to. Value is the answer, such as an IP or a target hostname. TTL is how many seconds a resolver may cache the answer.
Can I copy and export the results?
Yes. Click Copy results to copy a formatted table block, or Export CSV to download a file you can open in a spreadsheet. You can also click items in History to re-run past lookups and Clear history to remove stored entries.
Does this tool send or store my data?
Lookups are requested on demand so the interface can display live results, and recent queries are saved locally in your browser for convenience. You can clear history at any time. The UI also supports a backend connection if you choose to integrate one later.