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Fecleshost DNS Checker

DNS Checker - DNS Propagation Tool

Check global DNS propagation across 40 worldwide locations in real-time. Verify domain records, track updates, and diagnose server propagation instantly.

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Understanding DNS Propagation

Everything you need to know about domain name system propagation, caching, and TTL lifecycle.

What is DNS Propagation?

DNS propagation is the timeframe required for domain name server updates to disperse across all ISP resolvers worldwide. When nameservers or IP addresses are updated, worldwide servers take up to 24–48 hours to update their cached records.

The Role of TTL (Time to Live)

TTL is a numerical value (measured in seconds) dictating how long intermediate recursive resolvers are allowed to cache your DNS response before asking authoritative nameservers for a fresh answer. Lowering TTL before migrations speeds up propagation.

How to Flush DNS Cache

If your domain has propagated worldwide but your computer still connects to the previous server, flush your local OS DNS resolver cache: ipconfig /flushdns

Supported DNS Record Types Matrix

A Record Maps domain hostname directly to a 32-bit IPv4 address.
AAAA Record Maps domain hostname to a 128-bit IPv6 address for modern routing.
CNAME Record Canonical Name alias record forwarding one domain alias to another.
MX Record Mail Exchange servers responsible for accepting incoming business email.
NS Record Delegates authoritative DNS nameservers managing zone records.
TXT Record Text strings verifying domain ownership, SPF, DKIM, and DMARC.
SOA Record Start of Authority specifying primary nameserver and zone serial.
CAA Record Specifies authorized Certificate Authorities permitted to issue SSL.
PTR Record Pointer record for reverse DNS lookups (mapping IP to hostname).
SRV Record Service locator defining hostname, port, and priority for services.
DS Record Delegation Signer securing DNSSEC trust chains at the parent zone.
DNSKEY Record Contains the public key used by resolvers to authenticate DNSSEC records.

Frequently Asked Questions

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