How long does DNS propagation take?

DNS propagation can take anywhere from a few minutes to 48 hours, depending on the TTL (Time to Live) values set on your DNS records and how frequently each DNS server refreshes its cache.

Can I check DNS propagation for any domain?

Yes. ShowDNS lets you check DNS propagation for any public domain or subdomain, including A, AAAA, MX, CNAME, TXT, NS, SOA, and CAA record types.

Is ShowDNS free to use?

Yes. ShowDNS.net is completely free and does not require registration or an account. All 50+ tools are available without any limits.

What DNS record types does ShowDNS support?

ShowDNS supports all major DNS record types: A, AAAA, CNAME, MX, TXT, NS, SOA, PTR, SRV, CAA, DS, and DNSKEY.

DNS Propagation Checker

Check DNS records globally, verify SSL certificates, audit security headers, test ports and more — 100% free.

50+

Free Tools

30+

DNS Servers

100%

Free & Open

No Login

Required

DNS Lookups

A Record Lookup

Find IPv4 address records for a domain

AAAA

AAAA Record Lookup

Find IPv6 address records for a domain

MX Lookup

Find mail exchange records

CNAME

CNAME Lookup

Find canonical name alias records

TXT

TXT Lookup

Find text records including SPF and DKIM

NS Lookup

Find nameserver records for a domain

SOA

SOA Lookup

Find start of authority records

CAA

CAA Lookup

Find certificate authority authorization records

Security & SSL

SSL

SSL Checker

Inspect and validate SSL/TLS certificates

SSL

SSL Expiry Checker

Check when your SSL certificate expires

SECU

Security Headers

Audit HTTP security headers on any site

CSP

CSP Checker

Validate Content Security Policy headers

HSTS

HSTS Checker

Check HTTP Strict Transport Security

DNSS

DNSSEC Validator

Validate DNSSEC signatures for a domain

CERT

Certificate Transparency

Search SSL certificate transparency logs

OCSP

OCSP Checker

Check certificate revocation status

Email & SPF

SPF

SPF Lookup

Look up Sender Policy Framework records

DKIM

DKIM Lookup

Look up DomainKeys Identified Mail records

DMARC

DMARC Lookup

Check Domain-based Message Authentication

BIMI

BIMI Lookup

Check Brand Indicators for Message Identification

SPF

SPF Generator

Generate an SPF record for your domain

DKIM

DKIM Generator

Generate DKIM keys for email signing

DMARC

DMARC Generator

Generate a DMARC policy record

Email Header Analyzer

Analyze and decode email headers

Domain & Network

WHOIS

WHOIS Lookup

Look up domain registration information

REVE

Reverse DNS Lookup

Find the hostname for an IP address

IP Location

Find geographic location of any IP address

DOMA

Domain Expiry Checker

Check when a domain name expires

BLAC

Blacklist Checker

Check if a domain or IP is blacklisted

DNS

DNS Health Checker

Run a full DNS health check on a domain

PORT

Port Checker

Test if a port is open on a host

PING

Ping Online

Ping a hostname or IP from the web

HTTP & Performance

HTTP

HTTP Header Checker

Inspect HTTP response headers

HTTP

HTTP Status Checker

Check HTTP status code of any URL

HTTP

HTTP/2 Test

Check if a site supports HTTP/2

HTTP

HTTP/3 Test

Check if a site supports HTTP/3 / QUIC

GZIP

GZIP Compression

Check if a site uses GZIP compression

CORS

CORS Tester

Test Cross-Origin Resource Sharing headers

REDI

Redirect Checker

Trace URL redirects step by step

CORE

Core Web Vitals

Measure Core Web Vitals for a URL

Trusted DNS Resolvers

We query these globally trusted providers across 30+ locations worldwide

Google DNS

8.8.8.8 8.8.4.4

Cloudflare DNS

1.1.1.1 1.0.0.1

Quad9

9.9.9.9 149.112.112.112

OpenDNS

208.67.222.222 208.67.220.220

CleanBrowsing

185.228.168.9 185.228.169.9

Comodo Secure DNS

8.26.56.26 8.20.247.20