DNS over HTTPS

Check web site IP is spoofed or not.

Install Compare

The DNS over HTTPS Firefox add-on helps users verify the authenticity of a website's IP address by comparing data from the browser and DNS over HTTPS (DoH) servers. It extracts the website's Fully Qualified Domain Name (FQDN), domain name, and IP address during browsing, then obtains the corresponding IP, PTR, and CNAME records directly from a DoH server.

By contrasting these data points, the add-on detects potential IP spoofing or use of private IP addresses. It communicates results visually through icon color changes: green indicates normal status, yellow flags private IP usage, and red warns when the IP addresses differ with mismatched PTR/CNAME domain names. This real-time security check enhances browsing safety and transparency by preventing spoofing attacks.

Add-on Privacy & Security Developer Tools Productivity

By:

Daily users:

Rating:

Version:

0.7resigned1 Last updated: 2024-04-26

Version code:

5731834

Creation date:

2018-08-31

Risk:

Permissions:

dns
tabs
webRequest
*://*/*

Size:

45.36K

URLs:

Full description:

Source:

Firefox Browser Add-ons

Updated:

a day ago

Ranking

# 7,548 ▼ 168

User reviews

by 天灭*****, 2025-03-24

by 敬念*****, 2025-02-24

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by Ga*****, 2022-12-23

View all user reviews ›

Extension safety

Risk impact

DNS over HTTPS requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******

Risk likelihood

DNS over HTTPS is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension website URL may be invalid
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Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******

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