What are MX records used for?

MX (Mail Exchange) records specify which mail servers are responsible for accepting incoming emails on behalf of your domain name.

Updated: August 2026 • Verified v1.2

DNS Records Lookup

Internet & NetworkEssential

Query live DNS records (A, AAAA, CNAME, MX, TXT, NS, SOA, CAA) for any domain using DNS-over-HTTPS.

Local Browser Execution: Your input is processed locally in your browser and is not sent to UTL servers.

RFC 8484 DNS-over-HTTPS (DoH) Protocol Specification

Understanding Your Results

A/AAAA map hostnames to IPv4/IPv6 addresses. MX specifies mail servers. TXT holds verification tokens (SPF, DKIM, Google verification). NS indicates authoritative nameservers.

Practical Guidance & Next Steps

When changing web hosts, check the TTL (Time To Live). If TTL is 3600, changes will take approximately 1 hour to propagate globally. Use MX lookups to verify email routing prior to cutover.

What is this?

A zero-backend DNS query interface that communicates directly with public DNS-over-HTTPS (DoH) resolvers to fetch authoritative DNS entries for any domain.

How does it work?

1. Enter a domain name (e.g., example.com). 2. Select the record type (ALL, A, AAAA, MX, TXT, CNAME, NS, SOA). 3. View formatted records with TTL (Time To Live), IP addresses, and priority values.

Why use it?

Essential when migrating web hosting, verifying Google/Microsoft domain ownership TXT records, configuring SPF/DKIM/DMARC email security, or diagnosing DNS propagation.

Technical Scope & Calculation Limitations

Queries public DNS-over-HTTPS resolvers (Cloudflare 1.1.1.1). Local intranet split-brain DNS records behind private firewalls are not queryable from public resolvers.

Frequently Asked Questions

DNS changes usually propagate within a few minutes up to 48 hours, depending on the TTL (Time To Live) configured on your previous DNS records.

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