How to bulk-check Telegram numbers — tg_active on Cheker.pro

Bulk-check tg_active shows who to reach on messenger vs SMS.

Telegram Days Checker (tg_active) is Cheker.pro bulk Telegram verification. This guide covers mass phone checks, tg_active API, phone intelligence, list hygiene before SMS/messengers, and CSV export for CRM.

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Who it is for

Telegram Days Checker is used by SMS hubs, performance marketing, crypto compliance, call centers and SaaS with Reseller API. If your pipeline segments «has Telegram / not» — this task type covers bulk at scale.

What Telegram Days Checker does

Telegram account activity days detection. Each input line becomes one CSV row with result fields.

Task type: tg_active. Family: Telegram. Input type: phone.

Pricing and output on Telegram Days Checker landing. Run tasks in dashboard.

Input file format

Upload TXT or CSV: phone numbers in international format (E.164 recommended, e.g. +14155552671). One file = one country only (country code in every line: Brazil 55, US 1, Russia 7).

• Minimum: 1,000 lines per task
• Maximum: 10,000,000 lines (large files auto-split)
• E.164 recommended: +country code, no spaces or brackets
• See format preview in the upload form at Telegram Days Checker

Do not mix phone, email and username in one file. From Excel export a single column to CSV — avoid formulas and scientific notation.

Output fields

• Number
• activated
• activedays / last online

Interpret Number · activated · activedays / last online with a clear rule: «yes» → Telegram channel candidate; «no» → SMS/email fallback or exclude from campaign.

Use cases

• Crypto community filters whitelist via tg_active.
• EdTech runs bot funnel only for numbers with tg.
• Crypto community filters whitelist via tg_active.

How to run a check

1. Sign up at Cheker.pro and top up USDT
2. Open Telegram Days Checker — TXT/CSV upload form
3. Wait for completion in «Мои задачи»
4. Download CSV into CRM / SMS hub / BI
5. Automation: Reseller API — tg_active

Common mistakes

• Local format without country code → false «no» results.
• Mixed countries in one file → API rejection or wrong output.
• Confusing Telegram registration with «number is reachable» — different signals.
• Treating «no» as permanent block without re-check after 7–14 days.
• Bulk-check without legal basis (GDPR / local telecom rules) — validation does not replace consent.

How to read activity

activedays and last online show last activity on Telegram. For re-engagement, drop accounts with activedays > 90; for antifraud, recent activity may be a positive signal.

Related Telegram checkers

• Telegram Checker (tg) — Basic Telegram number verification
• Telegram Age & Gender Checker (tg_avatar) — Comprehensive Telegram profile analysis including age, gender, avatar and activity data

FAQ

How is Telegram Days Checker different from other Telegram checkers?

Task type tg_active: Telegram account activity days detection. Output: Number · activated · activedays / last online. Compare family variants in the checker catalog and tg_active landing.

Minimum batch size and file format for tg_active?

Minimum 1,000 lines. phone numbers in international format (E.164 recommended, e.g. +14155552671). One country per file. Format hints on the upload page.

How much does Telegram Days Checker cost?

Pay-as-you-go USDT: per-line billing at checker rate. Current price per 10k lines on the tg_active card and dashboard after top-up.

API for Telegram Days Checker?

Yes. Reseller API: POST /api/v1/check with task type tg_active. Keys: API keys, docs: /docs.

Is bulk checking legal?

Use only lists with opt-in or other lawful basis (GDPR, local rules). Cheker.pro acts as processor on your instructions; you define retention and consent policy.

Summary: Telegram Days Checker is the bulk layer for Telegram. Catalog: tg_active · run → · Cheker.pro blog