Network Tools6 min read•2026-05-30
DNS Lookup Free: Check DNS Records Online
By FreeToolbox Team
DNS Lookup Free: Check DNS Records Online
Need to check DNS records? Our free tool queries A, AAAA, MX, CNAME, TXT, NS, and more.
What is DNS?
DNS translates domain names (example.com) into IP addresses (93.184.216.34) that computers use.
DNS Record Types
| Type | Purpose | Example |
|---|---|---|
| A | IPv4 address | example.com to 93.184.216.34 |
| AAAA | IPv6 address | To 2606:2800:220:1 |
| CNAME | Alias | www to example.com |
| MX | Mail server | mail.example.com |
| TXT | Text data | SPF, DKIM |
| NS | Nameserver | ns1.example.com |
Why Check DNS Records?
- Troubleshoot website downtime
- Verify email MX and TXT records
- Check DNS propagation after changes
- Audit DNS security
- Verify domain ownership
FreeToolbox DNS Lookup Tool
Features: - 100% free, no registration - Multiple record types - Clean results - No rate limits - Instant results
Try: [DNS Lookup Tool](/tools/dns-lookup)
How to Use
- Enter domain name
- Select record type
- Click Lookup
- View results
DNS Propagation Timeline
| Change | Propagation |
|---|---|
| A record | 1-24 hours |
| MX record | 1-24 hours |
| CNAME | 1-24 hours |
| TXT | 1-24 hours |
| NS record | Up to 48 hours |
Common Use Cases
- Website not loading? Check A records
- Email not working? Check MX records
- SPF setup? Check TXT records
- Domain verification? Check TXT records
Frequently Asked Questions
**Q: Why are my DNS changes not showing?** A: Propagation can take up to 48 hours.
**Q: Can I check subdomains?** A: Yes, enter full subdomain (blog.example.com).
[DNS Lookup Tool](/tools/dns-lookup)