Free DNS & Nameserver Diagnostic Tools
Free professional DNS record lookup, SOA sync checker, DNSSEC trust chain validator, global propagation tester, EDNS subnet query, and zone file parser.
Available Diagnostics & Tools
DNS Records Query & Nameserver Lookup | iN2 Tools →
Retrieve A, AAAA, MX, CNAME, TXT, SOA, SRV, and PTR records using the local resolver or a targeted nameserver.
Authoritative DNS Servers Sync Check | iN2 Tools →
Perform real-time queries against all authoritative nameservers of a domain to verify SOA serial parity.
DNSSEC Trust Chain Analyzer & Validator | iN2 Tools →
Audit a domain's DNSSEC setup, including DS and DNSKEY records, signature validation, and parent-child trust confirmation.
Auto-discovery SRV List & Mail Config | iN2 Tools →
Verify DNS records required for automatic mail client setups (Autodiscover, Autoconfig, and all IMAP/SMTP SRVs).
Global DNS Propagation Checker | iN2 Tools →
Queries a specific host and record type in real-time across 10+ globally distributed DNS resolvers.
DNS Zone File Parser & Generator | iN2 Tools →
Parse an existing zone file to audit it for syntax errors, or generate a standard RFC 1035 zone file.
EDNS Client Subnet (ECS) Checker | iN2 Tools →
Test if recursive DNS resolvers support and forward EDNS Client Subnet (ECS) metadata to authoritative nameservers.