Is this tool private?

Yes. All processing happens locally in your browser. No data is uploaded.

What extras does this tool have?

Extras: (1) Core function, (2) Batch mode, (3) Copy results, (4) Download, (5) History, (6) CSV export, (7) Custom options, (8) Validation, (9) Warnings, (10) Stats, (11) Multi-format, (12) Configurable, (13) Preview.

Network, Runs in your browser

DNS Record Validator

Validate DNS record format: A, AAAA, CNAME, MX, TXT, SRV, CAA. 100% private. 100% private.

100% Private Works Offline Instant

Record type

Name (owner)

TTL (seconds)

Value

Zone-file line

@ 3600 IN A 192.168.1.1

✅ Valid A record

Batch mode (one record per line: <type> <value>)

DNS record reference

Type	Purpose	Example
A	Maps a hostname to an IPv4 address.	example.com. IN A 192.0.2.1
AAAA	Maps a hostname to an IPv6 address.	example.com. IN AAAA 2001:db8::1
CNAME	Canonical name — alias of one name to another.	www IN CNAME example.com.
NS	Delegates a zone to a nameserver.	example.com. IN NS ns1.example.com.
MX	Mail exchange — mail server for the domain.	example.com. IN MX 10 mail.example.com.
TXT	Arbitrary text (SPF, DKIM, verification).	example.com. IN TXT "v=spf1 -all"
SRV	Service locator (priority/weight/port/target).	_sip._tcp IN SRV 10 20 5060 sip.example.com.
CAA	Certification Authority Authorization.	example.com. IN CAA 0 issue "letsencrypt.org"

Privacy: all validation runs locally in your browser.

Validate DNS record format: A, AAAA, CNAME, MX, TXT, SRV, CAA. 100% private. 100% private. Everything runs locally in your browser — your data never leaves your device.

How to use

Enter your input in the tool above.
Adjust any options to your preference.
Use the Copy or Download buttons to save the result.
Everything happens locally — your data never leaves your browser.

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