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Free DNS Tool
Look up the authoritative name servers (NS records) for any domain. Identify your DNS provider and verify your NS configuration is correct.
Free forever · Live DNS lookup · Provider detection
A silent SPF or DKIM change can quietly send your emails to spam for weeks before anyone notices. Drop your email and we'll alert you the moment something looks off, so you fix it in minutes, not after a deliverability cliff.
Check every aspect of your email infrastructure
Mailsoftly handles SPF, DKIM & DMARC automatically. Campaigns, automation, and analytics in one place.
Free to start with your Google Workspace account. No credit card required.
This free NS checker looks up the authoritative name servers for any domain and identifies the DNS provider behind them, such as Cloudflare, GoDaddy or Amazon Route 53. Name servers are where all of your other DNS records live, including the MX, SPF, DKIM and DMARC records that control your email. The checker lists every NS record with its IP address, verifies the set is consistent, and tells you which provider to log into when you need to change a record.
Authoritative name servers are the servers that hold the official DNS records for your domain and answer queries about it. When you change your MX or SPF records, you make that change at the authoritative name server, usually through your DNS provider’s dashboard. A domain normally has two or more NS records from the same provider for redundancy. Run the lookup above to see which provider is authoritative for any domain.
