Free DNS & Network Tools

Free DNS Checker
& Email Tools

DNS lookups, email authentication checks, SSL verification, blacklist monitoring and more. Real-time results. No caching. No account required.

12 Tools
Real-time
Zero caching
Always free

Email & Authentication

Check your email DNS records
MX Checker
Find mail servers and routing priority for any domain.
Use tool
SPF Checker
Validate your SPF record and check all sending mechanisms.
Use tool
DKIM Checker
Verify DKIM public key records for any selector.
Use tool
DMARC Checker
Parse DMARC policy, reporting addresses, and alignment settings.
Use tool
Blacklist Checker
Check an IP against 15+ major spam and abuse blacklists.
Use tool

DNS Records

Look up any DNS record type
DNS Lookup
Look up A, AAAA, CNAME, MX, TXT, NS, SOA, and more for any domain.
Use tool
DNS Propagation
Check if DNS changes have propagated to Google, Cloudflare, and Quad9.
Use tool
Reverse DNS (PTR)
Find the hostname associated with any IP address via PTR record lookup.
Use tool

Domain & IP Tools

Investigate domains and IP addresses
What's My IP
See your current public IP address, ISP, ASN, and geographic location.
Use tool
WHOIS Lookup
Get registration info, registrar, expiry date, and nameservers for any domain.
Use tool
SSL Certificate
Check SSL certificate validity, expiry date, issuer, and Subject Alt Names.
Use tool

Having DNS problems with your hosting?

HostBible's hosting comes with full DNS management in cPanel. Our support team can help you configure any of the records these tools check.

View Hosting Plans DNS Guides

Frequently Asked Questions

What DNS records can I check with these tools?
You can check all common DNS and email authentication record types: A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, and SRV records via the DNS Lookup tool. For email specifically, there are dedicated tools for MX, SPF, DKIM, and DMARC records. You can also check SSL certificates, run WHOIS lookups, check blacklists, verify DNS propagation, and perform reverse DNS (PTR) lookups.
Are these DNS tools completely free?
Yes, all 12 tools are completely free with no account required. There are no rate limits for normal use, no sign-up forms, and no hidden charges. Every tool returns real-time results directly from DNS resolvers so you always get the most current data.
Why do my results differ from other DNS tools?
Different tools query different DNS resolvers, which may have different cached data depending on when they last refreshed a record. These tools use DNS over HTTPS (DoH) via Google (8.8.8.8), Cloudflare (1.1.1.1), and Quad9 resolvers without caching on our end, so you see the record as it exists at those resolvers right now. During DNS propagation, results will differ between resolvers until all caches expire.
Do these tools cache DNS results?
No. Every lookup you perform fetches a fresh result from the upstream resolver at the time of your request. The underlying DNS resolver may hold a cached copy of the record until its TTL expires, but we do not add any additional caching layer on top of that.
Which DNS resolvers do these tools use?
The tools primarily use Google Public DNS (8.8.8.8) via DNS over HTTPS for single-domain lookups, and additionally query Cloudflare (1.1.1.1) and Quad9 (9.9.9.9) when showing propagation status across multiple resolvers. These are among the largest and most widely-used public DNS resolvers in the world.