Is the Dns Lookup free to use?

Yes, our Dns Lookup is completely free with no registration required. Use it unlimited times without any restrictions.

Is my data secure when using this tool?

Yes, all processing happens locally in your browser. Your data never leaves your device and is not stored on our servers.

Do I need to install anything?

No installation needed. The tool works directly in your web browser on any device.

How do I use the Dns Lookup?

Enter your input, click the action button, and get instant results. Copy the output for use in your projects.

DNS Lookup Tool - Check DNS Records Online

Last updated March 22, 2026

What is DNS Lookup?

DNS (Domain Name System) lookup is the process of querying DNS servers to retrieve information about a domain name. DNS acts as the internet's phone book, translating human-readable domain names like "example.com" into IP addresses that computers use to communicate.

When you perform a DNS lookup, you're asking DNS servers to return specific records associated with a domain. These records contain various types of information, from the server's IP address to email server configurations and domain verification data. DNS lookup is essential for troubleshooting website issues, verifying email configurations, and understanding how a domain is configured.

Common DNS Record Types

A Record: Maps domain to IPv4 address (e.g., 192.0.2.1)
AAAA Record: Maps domain to IPv6 address
MX Record: Specifies mail servers for the domain
TXT Record: Contains text information (SPF, DKIM, verification)
CNAME Record: Creates an alias pointing to another domain
NS Record: Specifies authoritative name servers
SOA Record: Contains administrative information about the zone

Example DNS Lookup Results:

Domain: example.com
A Record: 93.184.216.34
MX Record: mail.example.com (Priority: 10)
TXT Record: "v=spf1 include:_spf.example.com ~all"
NS Records: ns1.example.com, ns2.example.com

How to Use the DNS Lookup Tool

Step 1: Enter Domain Name

Type the domain name you want to look up in the input field. You can enter just the domain (example.com) or include a subdomain (www.example.com). Don't include http:// or https:// - just the domain name.

Step 2: Select Record Type

Choose the type of DNS record you want to query. If you're troubleshooting website access, check A records. For email issues, check MX records. Select "ALL" to see all available DNS records for the domain.

Step 3: Analyze Results

Review the DNS records returned by the lookup. Each record type provides different information about how the domain is configured. Use this information to verify configurations, troubleshoot issues, or understand domain setup.

Understanding the Results

DNS lookup results show the current configuration of the domain's DNS records. If you recently changed DNS settings, it may take 24-48 hours for changes to propagate globally. Use this tool to verify that changes have taken effect.

Common Use Cases

1. Website Troubleshooting

When a website isn't loading, check A records to verify the domain points to the correct IP address. DNS misconfigurations are a common cause of website downtime. Compare the returned IP with your hosting provider's information.

2. Email Configuration Verification

Check MX records to verify email servers are configured correctly. Also check TXT records for SPF and DKIM settings, which are crucial for email deliverability and preventing your emails from being marked as spam.

3. Domain Migration

When migrating a website to a new host, use DNS lookup to verify that DNS changes have propagated. Check that A records point to the new server and that all other records (MX, TXT, CNAME) are correctly configured.

4. Security Audits

Review TXT records for security configurations like SPF (Sender Policy Framework) and DMARC (Domain-based Message Authentication). Check that only authorized mail servers can send email from your domain.

5. Subdomain Configuration

Verify that subdomains are correctly configured with appropriate A or CNAME records. This is essential when setting up services like www, mail, or custom subdomains for different applications.

DNS Lookup Examples

Example 1: A Record Lookup

$ dig example.com A

;; ANSWER SECTION:
example.com.    3600    IN    A    93.184.216.34

Example 2: MX Record Lookup

$ dig example.com MX

;; ANSWER SECTION:
example.com.    3600    IN    MX    10 mail.example.com.
example.com.    3600    IN    MX    20 mail2.example.com.

Example 3: TXT Record Lookup

$ dig example.com TXT

;; ANSWER SECTION:
example.com.    3600    IN    TXT    "v=spf1 include:_spf.example.com ~all"
example.com.    3600    IN    TXT    "google-site-verification=abc123"

Example 4: NS Record Lookup

$ dig example.com NS

;; ANSWER SECTION:
example.com.    3600    IN    NS    ns1.example.com.
example.com.    3600    IN    NS    ns2.example.com.

Example 5: CNAME Record Lookup

$ dig www.example.com CNAME

;; ANSWER SECTION:
www.example.com.    3600    IN    CNAME    example.com.

Frequently Asked Questions

What is DNS propagation?

DNS propagation is the time it takes for DNS changes to spread across all DNS servers worldwide. When you update DNS records, it can take 24-48 hours for the changes to fully propagate, though many changes are visible within a few hours.