Line Age & Gender Checker: bulk Line verification, API & CSV output guide

Line Age & Gender Checker answers whether a contact is registered on Line. Bulk signal for CRM and marketing ops.

Line Age & Gender Checker (line_senior) is Cheker.pro bulk Line verification. This guide covers mass phone checks, line_senior API, phone intelligence, list hygiene before SMS/messengers, and CSV export for CRM.

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Who it is for

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

What Line Age & Gender Checker does

Detect Line account age, gender and profile information. Each input line becomes one CSV row with result fields.

Task type: line_senior. Family: Line. Input type: phone.

Pricing and output on Line Age & Gender 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: 2,000 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 Line Age & Gender 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

• activated
• age
• gender
• avatar
• profile

Interpret activated · age · gender · avatar · profile with a clear rule: «yes» → Line channel candidate; «no» → SMS/email fallback or exclude from campaign.

Use cases

• Marketing runs a separate sequence for "Line: yes".
• Marketing runs a separate sequence for "Line: yes".
• Marketing runs a separate sequence for "Line: yes".

How to run a check

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

Common mistakes

• Local format without country code → false «no» results.
• Mixed countries in one file → API rejection or wrong output.
• Confusing Line 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.

Profile fields & ethics

Extended output (activated · age · gender · avatar · profile) adds demographic and media signals. Use for segmentation, not discriminatory filtering. Age/gender are model estimates, not KYC proof.

Related Line checkers

• Line Checker (line) — Line account verification

FAQ

How is Line Age & Gender Checker different from other Line checkers?

Task type line_senior: Detect Line account age, gender and profile information. Output: activated · age · gender · avatar · profile. Compare family variants in the checker catalog and line_senior landing.

Minimum batch size and file format for line_senior?

Minimum 2,000 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 Line Age & Gender Checker cost?

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

API for Line Age & Gender Checker?

Yes. Reseller API: POST /api/v1/check with task type line_senior. 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: Line Age & Gender Checker is the bulk layer for Line. Catalog: line_senior · run → · Cheker.pro blog