High-value Users Checker: bulk Number Checker verification, API & CSV output guide

High-value Users Checker answers whether a contact is registered on Number Checker. Bulk signal for CRM and marketing ops.

High-value Users Checker (high_value_users) is Cheker.pro bulk Number Checker verification. This guide covers mass phone checks, high_value_users API, phone intelligence, list hygiene before SMS/messengers, and CSV export for CRM.

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Who it is for

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

What High-value Users Checker does

Identify high-value phone users via big-data signals for better targeting and prioritization. Each input line becomes one CSV row with result fields.

Task type: high_value_users. Family: Number Checker. Input type: phone.

Pricing and output on High-value Users 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 High-value Users 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
• high-value: yes/no

Interpret Number · high-value: yes/no with a clear rule: «yes» → Number Checker channel candidate; «no» → SMS/email fallback or exclude from campaign.

Use cases

• SMS hub saves 28% traffic with active_check.
• phonecheck before expensive ws/tg tasks.
• SMS hub saves 28% traffic with active_check.

How to run a check

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

Common mistakes

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

High-value segment

HVU is big-data scoring, not tax income. Use to prioritize sales queues.

Related Number Checker checkers

• Phone Number Validation (phonecheck) — Validate numbering format, line type, and reachability signals before running platform-specific checks
• Number Active Checker (active_check) — Detect phone number activity level via big-data analytics to improve SMS delivery and reduce costs

FAQ

How is High-value Users Checker different from other Number Checker checkers?

Task type high_value_users: Identify high-value phone users via big-data signals for better targeting and prioritization. Output: Number · high-value: yes/no. Compare family variants in the checker catalog and high_value_users landing.

Minimum batch size and file format for high_value_users?

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 High-value Users Checker cost?

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

API for High-value Users Checker?

Yes. Reseller API: POST /api/v1/check with task type high_value_users. 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: High-value Users Checker is the bulk layer for Number Checker. Catalog: high_value_users · run → · Cheker.pro blog