DNS Record Lookup
Inspect standard DNS records (A, AAAA, MX, NS, CNAME, TXT) for any domain using DNS-over-HTTPS.
Configure inputs and click Run
How It Works & Educational Guide
How Nexifr's DNS Record Lookup handles your data securely in the browser — covering supported formats, encoding standards, and practical developer workflows.
01How DNS Record Resolution Powers the Web
The Domain Name System (DNS) acts as the phonebook of the internet. It translates human-readable domain names (like `nexifr.com`) into computer-readable IP addresses (like `192.0.2.1`), routing web requests to the correct host servers.
02Understanding DNS Record Types (A, CNAME, MX, TXT)
• A (IPv4 Address): Points a domain directly to its hosting server. • AAAA: Points a domain to its IPv6 address. • CNAME (Canonical Name): Creates an alias pointing to another domain, useful for CDN setups like Cloudflare. • MX (Mail Exchange): Directs email traffic to mail servers. • TXT (Text Record): Holds notes, and is critical for security checks like SPF, DKIM, and DMARC to prevent email spoofing.
03The Concept of TTL & Propagation Delays
TTL (Time to Live) specifies how many seconds a record remains cached in DNS resolvers before a new query is required. During migrations, lowering the TTL value beforehand ensures that users see your new hosting server IP quickly without long propagation downtime.
Frequently Asked Questions
Is this query cached?
No, we perform direct query lookups to Cloudflare DNS endpoints so it fetches live values.
Why check CNAME records?
CNAME maps alias names to real domain targets, useful to verify CDN mappings.
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