DNS Lookup
Look up DNS records for any domain. Check A, AAAA, MX, TXT, CNAME, and NS records instantly.
DNS records are the foundation of how the internet routes traffic and delivers email. A DNS lookup lets you inspect every record associated with a domain — from A records that map to IP addresses, to MX records that control email routing, to TXT records used for SPF, DKIM, and DMARC authentication. Whether you are troubleshooting email delivery failures, verifying a new domain configuration, or debugging DNS propagation issues, this tool gives you instant visibility into a domain's DNS setup.
What We Check
- ✓A and AAAA record lookup
- ✓MX record verification for email
- ✓TXT records (SPF, DKIM, DMARC)
- ✓CNAME record resolution
- ✓NS nameserver identification
Frequently Asked Questions
What is a DNS lookup?
A DNS lookup queries the Domain Name System to find the records associated with a domain name. It translates human-readable domains like example.com into IP addresses, mail server addresses, and other configuration data that computers need to route traffic and deliver email.
What are MX records and why do they matter?
MX (Mail Exchange) records tell the internet which servers handle email for a domain. Each MX record has a priority value — lower numbers are tried first. If MX records are missing or misconfigured, email sent to that domain will bounce or be delayed.
What is an A record?
An A record maps a domain name to an IPv4 address. It is the most fundamental DNS record type and is what your browser uses to find the server hosting a website. AAAA records serve the same purpose but point to IPv6 addresses instead.
How do I check DNS propagation?
DNS propagation is the time it takes for DNS changes to spread across all nameservers worldwide, typically 15 minutes to 48 hours. You can check propagation by performing DNS lookups from different locations or using a propagation checker to see which servers have the updated records.
What DNS records are used for email authentication?
SPF, DKIM, and DMARC are all stored as TXT records in DNS. SPF specifies which servers may send email for a domain, DKIM provides a cryptographic signature for messages, and DMARC tells receivers how to handle mail that fails SPF or DKIM checks.
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