FindBest Tools

Network Utility

DNS Checker

Check DNS records for any domain name in real-time. Look up A, MX, CNAME, TXT, and other critical records to verify configuration or troubleshoot propagation.

Record types

What are DNS Records?

DNS (Domain Name System) records are instructions that live on authoritative DNS servers. Think of them as a "phone book" for the internet that translates human-readable domain names (like findbest.tools) into machine-readable IP addresses (like 192.168.1.1).

When you type a URL into your browser, a DNS query is sent to a resolver. The resolver eventually finds the authoritative server for that domain and asks for the records needed to route your request to the correct server. Without these records, the internet as we know it would not function.

Common DNS Record Types Explained

A Record

The most fundamental record. It maps a domain or subdomain to an IPv4 address.

AAAA Record

Similar to the A record, but it maps a domain to an IPv6 address instead.

MX Record

Mail Exchange records specify the mail servers used for the domain's email.

CNAME Record

A Canonical Name record aliases one domain name to another (alias).

TXT Record

Stores text data for services like SPF, DKIM, and site ownership verification.

NS Record

Identifies the authoritative name servers responsible for your DNS zone.

SOA Record

The Start of Authority record contains admin info and zone transfer details.

PTR Record

The Pointer record is used for reverse DNS lookups (IP to domain name).

How to Troubleshoot DNS Issues

DNS issues are often the root cause of "Site Not Found" errors or email delivery failures. Here are three steps to troubleshoot using this checker:

  1. Check NS Records: First, verify that your domain is pointing to the correct name servers provided by your host.
  2. Verify A/CNAME: Ensure your A record points to your server's correct IP, or your CNAME points to the correct provider hostname.
  3. Wait for Propagation: If you recently made changes, use this tool to see if the new records are showing up. Remember that TTL settings determine how long old records are cached.

Frequently asked questions

What DNS record types can I look up?

Our tool supports A, AAAA, MX, CNAME, TXT, NS, SOA, PTR, SRV, and CAA records. You can select individual types or query all of them simultaneously for a complete domain overview.

How long does DNS propagation take?

DNS propagation typically takes anywhere from 12 to 48 hours to complete worldwide. However, depending on your TTL (Time to Live) settings, changes can often be seen in just a few minutes.

What's the difference between A and CNAME records?

An A record maps a hostname directly to an IPv4 address. A CNAME (Canonical Name) record acts as an alias, pointing one domain name to another instead of a specific IP.

Why is my MX record not showing up?

If your MX records aren't appearing, it could be due to a recent change still propagating, an incorrect priority value, or a typo in the mail server hostname. Ensure your name servers are correctly pointed to your provider.

How do I check if my DNS has propagated?

You can use this tool to query records directly from our servers. To verify global propagation, you should use a checker that queries servers from multiple geographical locations to see if the results are consistent.

What is an SOA record used for?

The SOA (Start of Authority) record contains essential administrative information about a DNS zone, including the primary name server, the email of the domain administrator, and several timers for refreshing the zone data.

What is the TTL (Time to Live) in DNS?

TTL is a value in a DNS record that tells the resolver or browser how long (in seconds) it should cache the record before it needs to query the server again for an update.

Can I have multiple TXT records for one domain?

Yes, you can have multiple TXT records. This is very common for handling different services like SPF for email, and verification codes for Google Search Console, Microsoft 365, or other third-party tools.

What is a reverse DNS (PTR) lookup?

A PTR record is the opposite of an A record. It maps an IP address back to a hostname, which is often used by mail servers to verify that a sending IP is associated with the domain it claims to be.

Why do some record types show 'No records found'?

This usually means the domain hasn't configured that specific record type. For example, a domain without IPv6 support won't have AAAA records, and if no security policies are set, it might not have CAA or TLSA records.

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