Telephone

Overview

Telephone is ranked #21 of 27 in phone number validation software on Specifiction. It runs on API, Web. There is no free plan. A free trial is offered. Paid plans start at €24.99/mo.

Compared on phone number validation software

Free plan

Notelephone.so

Line type data

Yestelephone.so

Carrier data

Yestelephone.so

Reachability data

Yestelephone.so

Bulk validation

Yestelephone.so

Facts

Product

Telephone provides an API to validate, verify, and enrich phone numbers in real time.telephone.so · 9 Oct 2026

Number detection

The API detects fake, invalid, and disposable phone numbers.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

Geo data

The API can return geographic information including country, region, city, and timezone.telephone.so · 9 Oct 2026

API access

The service offers single-number GET validation and bulk POST validation endpoints.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

Developer setup

The quickstart instructs users to sign in with Google to obtain a default API key.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

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

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

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

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 it ranks on Specifiction

• Best Phone Number Validation Software in 2026#21 of 27

Sources

• telephone.so· checked 9 Oct 2026
• telephone.so/docs· checked 9 Oct 2026
• telephone.so/privacy· checked 9 Oct 2026
• telephone.so/pricing· checked 9 Oct 2026