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Etheraddresslookup

Etheraddresslookup is a JavaScript browser extension for Chrome and Firefox that turns text resembling Ethereum addresses into block-explorer links, warns on known phishing domains, and offers custom bookmarks for crypto-related sites.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Etheraddresslookup — OpenViST project profile in Security & Custody.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it while browsing pages that contain Ethereum addresses or when you want the extension to warn about domains matched against its phishing lists.

Who it is for

  • People who look up Ethereum addresses while browsing web pages.
  • Browser users who want warnings for domains on the project’s phishing lists.

Documented uses

  • Open a detected Ethereum address in a block explorer.
  • Receive a warning when visiting a domain identified as known phishing or similar to one.
  • Keep custom bookmarks for frequently used sites.
Before you choose

Requirements & limits

The repository documents Chrome and Firefox extensions. Store installations are described as receiving automatic updates; manual installations do not.

  • Similar-URL detection can cause false positives; the project documents a whitelist and correction request routes.
  • The blacklist and whitelist are maintained by named project contributors rather than freely changed by all contributors.
  • The public repository specifies an MIT license.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Manually install the extension in Chrome

Load the repository’s manifest.json as a Chrome extension.

Before you start

  • Chrome
  • A downloaded or cloned copy of the EtherAddressLookup repository

Steps

  1. Open chrome://extensions in Chrome.

  2. Turn on developer mode.

  3. Load the repository’s manifest.json file by dragging and dropping it into the extensions page.

Expected outcome

The extension is loaded in Chrome from the downloaded repository.

Guide limitations

  • Manual installation does not receive automatic updates.
Documentation 1 ↗
Source-based practical guide

Manually load the extension in Firefox

Load the repository’s manifest.json as a temporary Firefox add-on.

Before you start

  • Firefox
  • A downloaded or cloned copy of the EtherAddressLookup repository

Steps

  1. Open about:debugging in Firefox.

  2. Choose “Load Temporary Add-on.”

  3. Browse to the downloaded repository and select manifest.json.

Expected outcome

The extension is loaded in Firefox as a temporary add-on.

Guide limitations

  • Manual installation does not receive automatic updates.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
15 October 2026
Original website title
409H/EtherAddressLookup · Official homepage title · retained in its source language
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