Carrier Detection checker carrier: use cases, compliance & integration

Carrier/email validation saves 20–35% of budget on undelivered messages.

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

Who it is for

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

What Carrier Detection does

Identify line type (Mobile/Virtual/Landline), carrier, country and region/city. Multiple countries supported.. Each input line becomes one CSV row with result fields.

Task type: carrier. Family: Carrier Detection. Input type: phone.

Pricing and output on Carrier Detection 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: 500 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 Carrier Detection

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
• number_type
• carrier
• country
• region
• city

Interpret number · number_type · carrier · country · region · city with a clear rule: «yes» → Carrier Detection channel candidate; «no» → SMS/email fallback or exclude from campaign.

Use cases

• CRM enrichment before look-alike campaigns.
• Marketing runs a separate sequence for "Carrier Detection: yes".
• CRM enrichment before look-alike campaigns.

How to run a check

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

Common mistakes

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

Carrier in SMS routing

Operator and region/city feed SMPP routers. VoIP/Landline flags matter for mobile-only routes.

FAQ

How is Carrier Detection different from other Carrier Detection checkers?

Task type carrier: Identify line type (Mobile/Virtual/Landline), carrier, country and region/city. Multiple countries supported.. Output: number · number_type · carrier · country · region · city. Compare family variants in the checker catalog and carrier landing.

Minimum batch size and file format for carrier?

Minimum 500 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 Carrier Detection cost?

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

API for Carrier Detection?

Yes. Reseller API: POST /api/v1/check with task type carrier. 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: Carrier Detection is the bulk layer for Carrier Detection. Catalog: carrier · run → · Cheker.pro blog