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DNS Lookup

📁Developer

🛠Free to use

🔄Updated March 2026

Query DNS records for any domain name. Look up A, AAAA, MX, CNAME, TXT, NS, SOA, and other record types instantly.

What Is DNS Lookup?

DNS (Domain Name System) translates human-readable domain names like example.com into IP addresses that computers use to route traffic. A DNS lookup queries these records to show you exactly how a domain is configured.

Our DNS Lookup tool queries authoritative name servers to retrieve all record types for any domain. This is essential for troubleshooting email delivery issues (MX records), verifying domain ownership (TXT records), checking CDN configuration (CNAME records), and diagnosing website connectivity problems (A/AAAA records).

Results include TTL values, record data, and the authoritative name server that responded, giving you complete visibility into a domain's DNS configuration.

Key Features

All Record Types

Query A, AAAA, MX, CNAME, TXT, NS, SOA, SRV, CAA, and PTR records in a single lookup.

Authoritative Queries

Goes directly to authoritative name servers for accurate, non-cached results.

Propagation Check

Test DNS resolution from multiple global locations to verify propagation after changes.

MX Priority Display

Shows mail exchange records with priority values for email routing troubleshooting.

TTL Information

Displays Time-to-Live values so you know how long records are cached by resolvers.

History Comparison

Compare current records against previous lookups to track configuration changes.

How to Use DNS Lookup

Enter Domain Name

Type the domain you want to look up (e.g., example.com). Subdomains work too.

Select Record Type

Choose a specific record type or select "All" to retrieve every available record.

View Results

See all matching DNS records with their values, TTL, and responding name server.

Check Propagation

Click "Check Propagation" to query servers worldwide and verify DNS changes have spread.

Use Cases

Email troubleshooting — Check MX records to diagnose why emails are not being delivered to a domain.
Domain verification — Confirm TXT records for Google Workspace, Microsoft 365, or domain ownership verification.
Website migration — Verify that A/CNAME records point to the new server after a migration.
SSL/CDN setup — Check CNAME records to confirm CDN or SSL certificate validation records are in place.

Frequently Asked Questions

What is an A record?

An A record maps a domain name to an IPv4 address. It tells browsers which server to connect to when someone visits your website.

What is an MX record?

MX (Mail Exchange) records specify which mail servers accept email for a domain. Priority values determine the order servers are tried.

Why are my DNS changes not showing up?

DNS changes propagate gradually as cached records expire. TTL values determine how long old records persist. Full propagation can take up to 48 hours.

What is a TXT record used for?

TXT records store text data and are commonly used for domain verification (Google, Microsoft), SPF email authentication, DKIM signatures, and DMARC policies.