Delegation Checker
Compare parent delegation NS records with the child zone, then check for SOA serial consistency across child authoritative nameservers.
Results
Related Tools
Related Articles
How to Check DNS Delegation Correctly
Learn how to check DNS delegation by comparing parent and child NS records, SOA responses, and glue records to find broken or inconsistent delegation.
How to Read NS Records Correctly
Learn how to read NS records, understand what they say about delegation, and spot signs of stale nameservers, mismatches, or broken authority.
What is an NS record?
Learn what NS records do, how nameserver delegation works, and how to troubleshoot DNS authority and resolution issues in real-world setups.
