DNS Lookup & Propagation Checker: A, MX, TXT & NS Records

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DNS Lookup & Propagation Checker: A, MX, TXT & NS Records
Interactive Client-Side Tool • 100% Free & Fast
Quick Test:
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Ready for DNS Resolution
Enter any hostname or domain and click "Lookup DNS" to query live records.

Diagnose domain name resolution, verify Google Workspace or Microsoft 365 mail exchange (MX) records, and audit SPF/DKIM TXT authentication records. 99tools DNS Lookup queries authoritative nameservers via DNS-over-HTTPS (DoH) with zero latency.

Quick Guide

How to Use DNS Lookup & Propagation Checker: A, MX, TXT & NS Records in 3-4 Simple Steps

1

Enter Domain Name

Type your target domain name without http/https (e.g. example.com).

2

Select Record Type

Choose ANY, A, AAAA, MX, TXT, CNAME, or NS records to query.

3

Inspect Live DNS Records

Analyze real-time TTL, record values, and server resolution diagnostics.

Need Help?

Frequently Asked Questions

Everything you need to know about this tool, accuracy, formulas, and privacy.

What is DNS lookup and why is it important?
A DNS lookup queries authoritative Domain Name System name servers to resolve domain names into machine-readable IP addresses, mail exchange records (MX), and verification tokens (TXT).
How long does DNS propagation usually take?
DNS propagation typically takes anywhere from a few minutes up to 24-48 hours depending on your DNS record Time-To-Live (TTL) settings and ISP caching policies.

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