Freedom251 › Phone Number Validation Software
Telephone
What Telephone is
Telephone is an API for validating and enriching phone numbers in real time. It detects fake, invalid, and disposable numbers, then identifies carriers and line types such as mobile, landline, VoIP, and toll free. Results can include country, region, city, and timezone data. Telephone states that it supports more than 190 countries. Developers can validate one number with a GET endpoint or submit bulk checks through a POST endpoint, using any HTTP client without an SDK. The service advertises sub-50ms responses, scaling to 10,000 requests per second, 99.99% uptime, and enterprise SLAs. Its product page claims 256-bit SSL encryption, SOC 2 Type II, and GDPR compliance. Pro costs €24.99 per month after a seven-day trial; a card is required to start.
Who it suits
Telephone suits developers who need phone-number validation, carrier and line-type data, geographic details, or bulk checks through HTTP APIs. It is also aimed at applications operating across more than 190 countries.
What it does well
- Detects fake, invalid, and disposable phone numbers
- Returns carrier and line-type information
- Supports single and bulk validation endpoints
- Covers more than 190 countries
- No SDK required for HTTP integration
What to know first
- No free plan
- Trial requires a payment card
- Privacy policy says retention depends on plan and configuration
- Privacy policy is described as a legal template
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Pro | Free for 7 days, then €24.99/month · Phone number validation · Carrier & line type detection · Location & geo data · Risk scoring · 190+ countries · Real-time API · 99.99% uptime SLA · SOC 2 & GDPR compliant | €24.99 a month |
As telephone.so lists them, read 9 Oct 2026. The maker's own page has the final word.
Verdict
Telephone provides validation, risk-related checks, carrier data, and geographic enrichment through straightforward HTTP endpoints. The paid Pro plan and card-required trial are important considerations for evaluation.
Facts from Telephone's own pages
- API access
- The service offers single-number GET validation and bulk POST validation endpoints. · telephone.so, 9 Oct 2026
- Carrier and line type
- It identifies carriers and line types including mobile, landline, VoIP, and toll free. · telephone.so, 9 Oct 2026
- Coverage
- Telephone states that it supports more than 190 countries. · telephone.so, 9 Oct 2026
- Developer setup
- The quickstart instructs users to sign in with Google to obtain a default API key. · telephone.so, 9 Oct 2026
- Geo data
- The API can return geographic information including country, region, city, and timezone. · telephone.so, 9 Oct 2026
- Integration
- Any HTTP client can call the API, and Telephone says no SDK is required. · telephone.so, 9 Oct 2026
- Latency and scale
- Telephone claims sub-50ms response times and infrastructure that scales to 10,000 requests per second. · telephone.so, 9 Oct 2026
- Number detection
- The API detects fake, invalid, and disposable phone numbers. · telephone.so, 9 Oct 2026
- Policy caveat
- The privacy policy describes itself as a template that should be reviewed by qualified legal counsel before being relied on for compliance. · telephone.so, 9 Oct 2026
- Privacy
- The privacy policy says phone numbers submitted for validation are processed to provide the service and that retention details may depend on the plan and configuration. · telephone.so, 9 Oct 2026
- Product
- Telephone provides an API to validate, verify, and enrich phone numbers in real time. · telephone.so, 9 Oct 2026
- Reliability
- The site advertises 99.99% uptime and enterprise SLAs. · telephone.so, 9 Oct 2026
- Security claims
- The product page says interactions use 256-bit SSL encryption and claims SOC 2 Type II and GDPR compliance. · telephone.so, 9 Oct 2026
- Trial terms
- Telephone advertises a seven-day trial with $0 due today and says a card is required to start. · telephone.so, 9 Oct 2026
Where Telephone stands on Freedom251
- Phone Number Validation Software#20 of 25