Geo Tier Builder — Country Tiers & GEO Lists

Name: Geo Tier Builder — Country Tiers & GEO Lists
Author: 301.st

Build tiered country lists and GEO allow/block segments for ad targeting, TDS rules, Cloudflare WAF, and traffic management.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-09-01

Version:

0.4.2

Last updated: 2026-08-29

Features & Capabilities

Geo Tier Builder helps webmasters, media buyers, and traffic managers build tiered country lists and GEO allow/block segments for targeting — fast, offline, and private.

🎯 Use Cases

Build geo-targeting rules for TDS (301.st, Keitaro, Binom, etc.)
Create Cloudflare WAF or Workers geo-filter expressions
Generate nginx geo maps or JavaScript conditions
Prepare country segments for ad campaigns and affiliate offers
Normalize messy country lists from partners or legacy configs
Check what Google actually shows in each target geo (SERP preview)

📋 Features

249 countries with flags, 8 regions (EUR, CIS, NA, LATAM, APAC, MENA, AFR, OCE)
Built-in tier classification: T1, T2, T3 — with custom tier overrides
Filter by region, tier, meta-group (EU, EEA, G7, G20, BRICS, Five Eyes)
Allow / Block mode toggle
Favorites and search with instant filtering
Region select-all checkboxes
10 export templates: 301.st TDS CSV, generic CSV/JSON/newline, Cloudflare WAF expression, Cloudflare Workers snippet, nginx map, JS condition
Smart import: auto-detects ISO2, ISO3, country names, mixed separators, Cloudflare expressions, JSON arrays
Custom presets: save, load, rename, delete your segments
Resizable output drawer — copy or download in one click
TDS path-regex helper: build and test URL path patterns for TDS rules
SERP preview: open Google results as seen from any country and language (gl / hl / uule)
Dark / Light / System theme

🔒 Privacy

Zero network requests by default — everything runs offline; the only exception is the optional publisher news you turn on yourself
Zero telemetry, analytics, or tracking
No remote code, no CDN dependencies
All data stays in local browser storage
Open source: github.com/investblog/geo-tier-builder
Required permissions: storage (and side panel). Optional and off by default: notifications, alarms, and access to 301.sh — used only by the news opt-in

User Growth & Download Statistics

Add-on

By:

301.st

Daily users:

Version:

0.4.2 Last updated: 2026-08-29

Version code:

6446427

Creation date:

2026-03-05

Firefox add-on GUID:

{d3e7c045-1a2b-4f8e-9c6d-0e5f7a8b9c2d}

Firefox add-on numeric ID:

2986119

Weekly download count:

Firefox on Android:

Risk:

Permissions:

Size:

566.58KB

Email:

su*****@301.st

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-09-01

Compare stats and ranking:

Ranking

# 67,193 ▼ 953

Other rankings

#100 in country keyword 28 ▼ 5#105 in build keyword 12

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:

301.st

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/geo-tier-builder/

Email:

su*****@301.st

Website:

https://301.st

Permission Change History

2026-08-29: Version 0.3.0 → 0.4.2

Add Permissions: alarms

Add Optional permissions: notifications https://301.sh/*

Is Geo Tier Builder — Country Tiers & GEO Lists 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.

Geo Tier Builder — Country Tiers & GEO Lists does not require any sensitive permissions.

Risk impact analysis details

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.

Geo Tier Builder — Country Tiers & GEO Lists may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****