DNS Lookup Tool

A DNS resolver tool is an online utility that queries the Domain Name System (DNS) to return DNS records for a given domain. It acts like a simplified version of the command-line tools dig or nslookup, giving you instant results in your browser. With a DNS resolver tool, you can quickly see which IP address or mail server a domain is pointing to.

A DNS lookup tool is essentially the same as a DNS resolver tool. It performs DNS lookups to check records like A, MX, TXT, NS, and CNAME. In some cases, “DNS lookup” refers to querying a single record type, while “DNS resolver” can mean fetching multiple record types. Most online tools (including this one) handle both functions.

Using an online DNS lookup tool saves time and avoids technical overhead. Instead of opening a terminal and remembering syntax, you can enter a domain in a web form and instantly get the results. This is especially useful for system administrators, developers, and IT support who need quick answers on the go.

This DNS resolver tool supports common record types:

• A – IPv4 address of a domain
• AAAA – IPv6 address of a domain
• MX – Mail servers handling email delivery
• TXT – Text records (SPF, DKIM, verification)
• CNAME – Canonical name (domain alias)
• NS – Name servers responsible for the domain

Yes. One of the most common uses of a DNS lookup tool is checking MX and TXT records. For example, if emails are bouncing, you can verify whether MX records point to the correct mail servers and whether SPF or DKIM records are set up properly.

Results depend on the resolver being used. This tool queries authoritative servers and public resolvers, giving you up-to-date and reliable information. However, keep in mind that DNS propagation delays can cause differences if a domain’s DNS was recently updated.