How long does DNS propagation take?

DNS propagation can take anywhere from a few minutes to 48 hours. It depends on the TTL (time to live) values on your DNS records and how often each DNS server refreshes its DNS cache. Lower TTL values speed up propagation.

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 records, SOA, PTR, SRV, CAA, DS, and DNSKEY. You can select any DNS record type to run DNS checks against global DNS servers.

All systems operational · 30+ global resolvers

DNS Propagation Checker

Run a global DNS propagation check across 30+ worldwide resolvers in real time. Select a record type, enter your domain, and verify authoritative results instantly.

50+

Free Tools

30+

Global Nodes

100%

Free & Open

No login

Required

DNS Lookups

A Record Lookup

Find IPv4 address records for a domain

Lookup A Record

AAAA

AAAA Record Lookup

Find IPv6 address records for a domain

Lookup AAAA Record

MX Lookup

Find mail exchange records

Lookup MX

CNAME

CNAME Lookup

Find canonical name alias records

Lookup CNAME

TXT

TXT Lookup

Find text records including SPF and DKIM

Lookup TXT

NS Lookup

Find nameserver records for a domain

Lookup NS

SOA

SOA Lookup

Find start of authority records

Lookup SOA

CAA

CAA Lookup

Find certificate authority authorization records

Lookup CAA

Security & SSL

SSL

SSL Checker

Inspect and validate SSL/TLS certificates

Check SSL

SSL

SSL Expiry Checker

Check when your SSL certificate expires

Check SSL Expiry

SECU

Security Headers

Audit HTTP security headers on any site

Open Security Headers

CSP

CSP Checker

Validate Content Security Policy headers

Check CSP

HSTS

HSTS Checker

Check HTTP Strict Transport Security

Check HSTS

DNSS

DNSSEC Validator

Validate DNSSEC signatures for a domain

Validate DNSSEC

CERT

Certificate Transparency

Search SSL certificate transparency logs

Open Certificate Transparency

OCSP

OCSP Checker

Check certificate revocation status

Check OCSP

Email & SPF

SPF

SPF Lookup

Look up Sender Policy Framework records

Lookup SPF

DKIM

DKIM Lookup

Look up DomainKeys Identified Mail records

Lookup DKIM

DMARC

DMARC Lookup

Check Domain-based Message Authentication

Lookup DMARC

BIMI

BIMI Lookup

Check Brand Indicators for Message Identification

Lookup BIMI

SPF

SPF Generator

Generate an SPF record for your domain

Generate SPF

DKIM

DKIM Generator

Generate DKIM keys for email signing

Generate DKIM

DMARC

DMARC Generator

Generate a DMARC policy record

Generate DMARC

Email Header Analyzer

Analyze and decode email headers

Analyze Email Header

Domain & Network

WHOIS

WHOIS Lookup

Look up domain registration information

Lookup WHOIS

REVE

Reverse DNS Lookup

Find the hostname for an IP address

Lookup Reverse DNS

IP Location

Find geographic location of any IP address

Open IP Location

DOMA

Domain Expiry Checker

Check when a domain name expires

Check Domain Expiry

BLAC

Blacklist Checker

Check if a domain or IP is blacklisted

Check Blacklist

DNS

DNS Health Checker

Run a full DNS health check on a domain

Check DNS Health

PORT

Port Checker

Test if a port is open on a host

Check Port

PING

Ping Online

Ping a hostname or IP from the web

Open Ping Online

HTTP & Performance

HTTP

HTTP Header Checker

Inspect HTTP response headers

Check HTTP Header

HTTP

HTTP Status Checker

Check HTTP status code of any URL

Check HTTP Status

HTTP

HTTP/2 Test

Check if a site supports HTTP/2

Run HTTP/2

HTTP

HTTP/3 Test

Check if a site supports HTTP/3 / QUIC

Run HTTP/3

GZIP

GZIP Compression

Check if a site uses GZIP compression

Open GZIP Compression

CORS

CORS Tester

Test Cross-Origin Resource Sharing headers

Test CORS

REDI

Redirect Checker

Trace URL redirects step by step

Check Redirect

CORE

Core Web Vitals

Measure Core Web Vitals for a URL

Open Core Web Vitals

Trusted DNS Resolvers

We query global DNS servers located across 30+ regions. DNS checks return live DNS information from each authoritative name server, bypassing any local DNS cache so you see real propagation status.