Telegram Captcha for groups security now with Geo-Blocking firewall
Now Doublegram Captcha also provides a new type of community management,
where Telegram administrators can decide exactly who is allowed to join — now based on
country and network origin. You can open access to specific regions, filter everything else automatically,
and focus on what matters the most.
For every Telegram admin, keeping spam, bots, and unwanted users out of your community is a daily management task.
Doublegram Captcha
is an advanced verification system designed specifically for Telegram groups, ensuring
only real users can enter by stopping automated accounts at the door.
With a 3-layer protection it is already the best way
to make sure your users are real and not bots or scripts. Now Doublegram Captcha also provides a new type of community management,
where Telegram administrators can decide exactly who is allowed to join — now based on
country and network origin. You can open access to specific regions, filter everything else automatically,
and focus on what matters the most.
Block Users by Country with Whitelist & Blacklist Rules
Doublegram Captcha now includes advanced geo-blocking for Telegram groups.
This allows Telegram group admins to automatically block users based on their network's country affiliation.
With the /firewall command, select any country and the rule to apply from the start menu and you're ready. From that moment, every user that joins your group from a non-allowed country will be removed instantly.
Two simple modes to adapt to all needs.
Whitelist Mode: Only allow users from specific approved countries.
Blacklist Mode: Block entire countries or regions known for spam activity.
Automatic Network Filtering: If the network resolves to a blocked country,
access is denied immediately.
Kick or Ban: Flexible Punishments for Verification Failures
Every Telegram community has different rules. That's why Doublegram Captcha gives admins full control
over how enforcement is applied.
Kick: Remove the user, but allow them to rejoin and try again.
Ban: Permanently block the user from returning.
Unlock New Community Types — and Protect the Ones You Already Have
Doublegram Captcha doesn't just secure your existing Telegram groups — it opens the door to entirely new types of communities that were previously too risky to run without strong entry controls. Geo-blocking, automated verification, and flexible enforcement make it possible to launch regional groups, private token sales, high-volume public groups, and brand-exclusive communities — all while keeping bots, spam raids, and unauthorized users out from day one.
Crypto groups preventing spam raids from high-risk countries
Regional communities with country-restricted access
Private token sales and launch events
Large public groups needing automated anti-spam protection
Brand and project communities that need verified, targeted audiences
Curious about what users actually see when Doublegram Captcha is enabled in your Telegram group?
You can preview the full verification flow in our public test group and experience it exactly like a new member would.
