DNS tools

Global DNS tools for propagation and troubleshooting

Check DNS propagation, compare public resolvers and inspect A, AAAA, CNAME, MX, TXT, NS, SOA, PTR, SRV and CAA records from one focused toolkit.

Record type

All record checks

Choose the DNS record type you need.

Read record type guide

Global DNS Lookup

A

Check DNS records worldwide across independent public resolvers for A, AAAA, CNAME, MX, TXT, NS, SOA, PTR, SRV and CAA answers.

DNS Propagation Checker

A

Check DNS propagation worldwide and compare record values, status and latency across independent global DNS resolvers.

A Record Checker

A

Run a global A record lookup to check IPv4 addresses, TTL values and propagation across independent DNS resolvers.

AAAA Record Checker

AAAA

Check AAAA records worldwide to verify IPv6 addresses, propagation, TTL behavior and resolver differences before or after a dual-stack change.

CNAME Record Checker

CNAME

Check CNAME records worldwide, compare canonical targets across public DNS resolvers and detect stale aliases after CDN, SaaS or hosting changes.

MX Record Checker

MX

Check MX records worldwide, compare mail server hostnames and priorities, and diagnose email delivery or migration issues across global DNS resolvers.

TXT Record Checker

TXT

Check TXT records worldwide for SPF, DKIM, DMARC and domain verification, and compare long DNS text values across independent resolvers.

NS Record Checker

NS

Check NS records worldwide, compare authoritative nameservers across public resolvers and detect stale delegation during DNS provider migrations.

SOA Record Checker

SOA

Check SOA records worldwide to compare serial numbers, primary nameservers and zone authority data across independent DNS resolvers.

PTR Record Checker

PTR

Run a PTR record lookup for an IPv4 address, IPv6 address or reverse DNS name and compare answers across global resolvers.

SRV Record Checker

SRV

Check SRV records worldwide to verify service targets, ports, priorities and weights for SIP, Microsoft 365, LDAP and other DNS services.

CAA Record Checker

CAA

Check CAA records worldwide to verify which certificate authorities may issue TLS certificates and detect stale policies before renewal.

Comparison guides

Pick the right DNS diagnostic method.

Online DNS checker vs dig

Choose between global resolver checks and terminal diagnostics.

DNS propagation checker vs DNS lookup

Understand when consistency matters more than a single record answer.

Troubleshooting guides

Use the checker with a diagnostic path.

Troubleshooting
DNS Propagation Not Working? A Step-by-Step Checklist
DNS errors
NXDOMAIN vs SERVFAIL: What Each DNS Error Means
Email DNS
How to Check SPF, DKIM and DMARC DNS Records