DomainPulse – DNS, SPF, DMARC & DKIM Inspector

Name: DomainPulse – DNS, SPF, DMARC & DKIM Inspector
Author: Arabinda Moharana

Instantly check SPF, DMARC, DKIM, MX, NS, SOA and TXT records for any domain right from your toolbar. Uses Cloudflare & Google DNS-over-HTTPS. No account, no tracking, 100% free.

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Features & Capabilities

DomainPulse

DomainPulse is a DNS and email security inspector for developers, sysadmins, pentesters, and IT professionals.

Check every critical DNS record for any domain in seconds — directly from your Firefox toolbar, with no external website, no account, and no data collection.

What you can check

SPF — Sender Policy Framework: detect misconfigured or missing SPF records, dangerous +all policies, and DNS lookup overflows
DMARC — Domain-based Message Authentication: inspect policy strength (none / quarantine / reject), aggregate report targets, and alignment settings
DKIM — DomainKeys Identified Mail: auto-probe 20 common selectors or enter a custom one; view key type and public key
MX — Mail Exchange: list all mail servers sorted by priority with automatic provider detection (Google Workspace, Microsoft 365, Proton Mail, and more)
TXT — All TXT records with auto-tagging (SPF, DMARC, Google, Microsoft, Atlassian, Stripe, and more)
NS — Name Server records with DNS provider detection (Cloudflare, AWS Route 53, Azure, GoDaddy, and more)
SOA — Start of Authority: primary nameserver, admin contact, serial, refresh, retry, expire, and TTL
AXFR — Zone transfer exposure check with guidance on manual testing

Key features

Uses Cloudflare DoH (1.1.1.1) and Google DoH (8.8.8.8) — choose your preferred resolver or run both and compare results side by side
Auto-fills the domain from whichever tab you are currently on
Cross-resolver diff — instantly see if Cloudflare and Google return different records for a domain
Colour-coded status badges (Pass / Warning / Not Found) with plain-English explanations
One-click copy for any raw DNS record
Zero data collection — all queries go directly from your browser to Cloudflare/Google. Nothing is sent to any third-party server.

Who is it for?

Developers setting up or debugging email delivery and authentication
Sysadmins auditing DNS configurations
Security researchers and pentesters checking domain exposure
IT teams verifying SPF, DMARC, and DKIM during email migrations

All DNS lookups are performed using DNS-over-HTTPS (DoH) — encrypted, privacy-respecting queries with no ISP interception.

No browsing history is stored. No telemetry. Fully open source.

User Growth & Download Statistics

Add-on

By:

Arabinda Moharana

Daily users:

Version:

1.0.0 Last updated: 2026-05-13

Version code:

6254841

Creation date:

2026-05-10

Risk:

Permissions:

activeTab
storage
https://cloudflare-dns.com/*
https://dns.google/*

Size:

81.25KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-16

Compare stats and ranking:

Ranking

# 99,772 ▲ 42,738

Other rankings

#220 in domain keyword 26 ▲

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Arabinda Moharana

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/domainpulse/

Is DomainPulse – DNS, SPF, DMARC & DKIM Inspector Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

DomainPulse – DNS, SPF, DMARC & DKIM Inspector requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Request access to the following domains: cloudflare-dns.com, dns.google

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

DomainPulse – DNS, SPF, DMARC & DKIM Inspector is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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