DNS Zone Records & Lookup Formatter

Format, validate, and construct BIND DNS zone records (A, AAAA, CNAME, MX, TXT, SPF, DMARC) with live DNS query verification.

Category: URL & Internet

How to Use DNS Zone Records & Lookup Formatter

  1. Enter any apex domain or subdomain name (e.g., everysolve.in or mail.example.com).
  2. Select your preferred record filter: All Records, A, CNAME, MX, or TXT.
  3. Optionally enter an IP address or server hostname destination for BIND zone formatting.
  4. Click Execute to query real-time DNS records via Google DoH and generate compliant BIND zone lines.

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Frequently Asked Questions

How does EverySolve perform genuine live DNS lookups directly from the browser?

EverySolve queries live DNS records using Google's public DNS-over-HTTPS (DoH) API (dns.google/resolve) over secure HTTPS. Because modern browsers do not expose native UDP/TCP socket APIs for standard port 53 DNS queries, DoH provides real-time, tamper-proof DNS responses directly from Google's global recursive resolvers with full CORS support and no simulated mock data.

What does an NXDOMAIN response mean when looking up a domain name?

NXDOMAIN (Non-Existent Domain, represented by DNS RCODE 3) is an authoritative response returned by a DNS resolver indicating that the queried domain name does not exist in the Domain Name System hierarchy. Common causes include typos in the domain name, an expired domain registration, or missing authoritative nameserver delegations at the domain registrar.

What is the correct syntax for an SPF (Sender Policy Framework) TXT record?

An SPF record is published as a DNS TXT record on your domain. A standard SPF record begins with the version prefix 'v=spf1', followed by authorized sending mechanisms (e.g., 'include:_spf.google.com' or 'ip4:192.0.2.1'), and concludes with an enforcement policy mechanism such as '~all' (SoftFail: unauthorized mail accepted but marked suspicious) or '-all' (HardFail: unauthorized mail rejected). Only one SPF record should exist per domain to prevent validation failures.

Why can you not place a CNAME record on an apex (root) domain name?

According to RFC 1034 section 3.6.2, if a CNAME (Canonical Name) record is present at a node, no other data records of any type may exist at that node. Because apex domain roots (e.g., example.com) must have SOA (Start of Authority) and NS (Name Server) records, adding a CNAME to the root would violate RFC specifications. Modern DNS providers (Cloudflare, AWS Route 53) solve this using proprietary 'CNAME Flattening' or ANAME/ALIAS records that dynamically resolve to A/AAAA records at request time.

What do DNS TTL values mean and what duration should I choose?

TTL (Time-To-Live) defines how many seconds recursive resolvers and client caches are allowed to cache a DNS response before querying authoritative nameservers again. A short TTL (e.g., 300 seconds / 5 minutes) is recommended during server migrations or DNS transitions so changes propagate rapidly. A longer TTL (e.g., 3600 to 86400 seconds / 1 to 24 hours) is recommended for stable production records to minimize DNS lookup latency and server query load.