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Telephone review

#18 of 25 in Phone Number Validation Software

A focused API for international number validation, enrichment, and risk scoring.

7.5/10Editor score
Visit Telephone
Telephone7.5 Visit Telephone

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Telephone is a developer-focused phone number validation and verification service for teams that need to assess number quality during sign-up, checkout, contact-list cleaning, routing, or similar workflows. It provides real-time checks through a REST API and also supports bulk validation, making it suited to both individual lookups and larger data-processing tasks. Results can include validity, formatting, carrier, line type, country, region, city, timezone, and risk information.

Pricing is straightforward: the published plan is Pro at €24.99 per month, billed monthly. It includes phone number validation, carrier and line-type detection, location and geo data, risk scoring, coverage across 190+ countries, and a real-time API. A 7-day free trial is available, and there is no free plan. The product is therefore easier to evaluate than a paid-only service without a trial, but the single published tier offers limited plan flexibility for organizations with different volume or feature requirements.

Telephone’s strongest distinction is the combination of validation, enrichment, and risk signals in one focused service. It can identify mobile, landline, VoIP, and toll-free numbers, detect disposable numbers, return geographic data, and process numbers through single-number or bulk endpoints. That breadth fits international workflows where basic validity checks are not enough. It is less suitable for buyers seeking a broader communications platform, as the offering centers on phone-number data and API-based processing rather than a wider application ecosystem. Choose Telephone when international coverage and risk-aware validation matter more than plan variety or non-API tooling.

Telephone pros and cons

  • Where it wins
    • Validates phone numbers across more than 190 countries
    • Detects fake, invalid, and disposable numbers
    • Adds carrier, line-type, location, and risk data
  • Where it doesn't
    • No free plan; ongoing access starts at €24.99 per month
    • Only one published Pro tier limits plan choice
    • Developer-focused API access may require technical implementation

Telephone fact sheet, pricing and score →

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