WhatIP tool
Inspect A, AAAA, MX, TXT, NS, SOA and CAA records for any domain.
Example:
Results will appear here.
What you should know
DNS (Domain Name System) is what translates a human-readable domain like example.com into the numeric IP address computers actually use to connect. A DNS lookup queries a domain's published DNS records directly and shows you what is currently configured -- useful for confirming a change has propagated, diagnosing email delivery problems, or checking how a domain is set up before you make changes of your own.
An A record points a domain to an IPv4 address, and an AAAA record does the same for IPv6. An MX record specifies which mail servers handle email for the domain, and is the first thing to check when email is not being delivered. A TXT record holds arbitrary text, most often used for domain-ownership verification and email authentication (SPF, DKIM, DMARC). An NS record lists the domain's authoritative nameservers, and a CNAME record aliases one hostname to another.
DNS changes do not take effect everywhere instantly -- each record has a TTL (time to live) that tells resolvers around the world how long they may cache the old value before checking again. If you just updated a record, seeing the old value here or elsewhere for a while afterward is expected, not a sign that anything is broken.