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DNS NS Record | Glossary

An NS (Nameserver) record specifies which DNS servers are authoritative for a domain. When a resolver needs to look up example.com, it finds the NS records first to know which server to query for all other records.

Why it matters: Incorrect or misconfigured NS records can make a domain entirely unreachable, as all other DNS resolution depends on them.

Quick tips:

Always have at least two NS records pointing to different nameservers for redundancy.
NS records must point to valid hostnames, not IP addresses.
Changes to NS records can take up to 48 hours to propagate globally.