Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
Log in
Preview of IP Hover Lookup

IP Hover Lookup by 原明行銷有限公司

Hover over any IP address or domain on any website to instantly see its country, ISP, ASN, reverse DNS, WHOIS and DNS records — no copy-and-paste needed.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

About this extension
Hover an IP or domain for about 0.25 seconds on any website (including input fields and textareas) and an info card appears:
• IP: country/region, ISP, ASN, reverse hostname (PTR) with forward check
• Domain: registrar, registration/expiry dates, status, name servers, DNS records (A/AAAA)

One-click copy of the IP or domain (whitespace removed).

Features
• Supports IPv4, IPv6 and domains (domain lookup can be turned off in settings)
• Never modifies the page
• Private/internal IPs (192.168.x.x, 10.x.x.x, etc.) are never sent
• Only the hovered IP or domain is sent — no page URLs or content; no tracking, no ads
• Toolbar popup and Alt+Shift+I toggle the feature instantly
• UI languages: English, 繁體中文, 简体中文, 日本語

Lookup service provided by LHT Web: https://www.lhtweb.com/

Support this project
Free to use, no ads, no locked features. If it helps you, an optional donation is welcome (it does not affect any feature):
https://core.newebpay.com/EPG/yupeni/je9hl6
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access your data for all websites

Optional permissions:

  • Access your data for www.lhtweb.com

Required data collection, according to the developer:

  • Website content
Learn more
More information
Add-on Links
  • Homepage
  • Support site
  • Copy add-on ID
Version
1.8.0
Size
50.8 KB
Last updated
a day ago (Oct 3, 2026)
Related Categories
  • Web Development
  • Search Tools
License
MIT License
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Tags
  • search
  • security
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.