Launch calling, video, chat, texting and AI agents under your logo, then resell to your customers fast.
Every feature in Cloud Phone, grouped by what it helps you do.
Free Phone Number Validator Tool
Enter a phone number and confirm it's correctly formatted for its country, with country code, national number, and best-guess line type — all in your browser.
Checks run on your device against national numbering-plan rules for 64+ countries. Carrier name and live active-line status are only available through the paid Lookup API.
What the validator confirms
Validity
Whether the number is correctly formatted for its country's numbering plan.
Country & region
The country code and country name resolved from the leading digits.
Line type hints
For countries where the number reveals it — mobile, landline, toll-free or premium.
Canonical formats
The number in E.164 and pretty national format, ready to copy.
What's not shown
Live active-line status and carrier name — those need the paid Lookup API.
How to validate a number in 3 steps
Enter the number
Include the country code (e.g. +44 for UK) — or paste a 10-digit US number for auto-detect.
Validate
The tool checks format, length, and country-code rules against national numbering plans.
Read the report
Country, national number, E.164 and line-type hint — ready to copy.
Why use a phone number validator
Cut wasted spend
Stop texting or calling malformed numbers before you fire off a campaign.
Boost deliverability
Clean lists before campaigns — invalid numbers get filtered up front.
Catch typos at entry
Wrap this in your signup flow, or paste a lead's number to sanity-check it.
Confirm reachability
Rule out format-only errors before you invest in manual outreach.
How it works
Validation checks the number against the official numbering plan for its country — length, country calling code, national prefix rules, and known ranges. That catches malformed numbers and correctly-formatted-but-wrong-length ones. For the second layer — live active-line status and carrier — you need the paid Lookup API.
The numbering-plan rules ship with the page. Every check is instantaneous and completely private — no logging, no rate limits, no signup.
Who uses it
Signup forms
Validate numbers at the point of entry.
Marketing
Scrub lists before SMS campaigns.
Sales
Confirm a lead's number isn't a typo.
Developers
Sanity-check input before you store it.
Accuracy & good-to-know
Validating numbers in your app or across a database? Use the Lookup API.
Free for single checks. To validate numbers in real time inside your signup flow — or scrub a full database with live carrier data and active-line status — My Country Mobile's validation API returns the same results programmatically.
Phone number validator — frequently asked questions.
Is the validator free?expand_more
Yes — single validations are free with no signup.
What's the difference between validate and lookup?expand_more
Validation confirms a number is real, active, and correctly formatted; a lookup returns richer details like caller and location.
Does it tell mobile from landline?expand_more
Yes — line type is included in every result.
Can I validate international numbers?expand_more
Yes. Include the country code to validate numbers worldwide.
Can I validate numbers in bulk?expand_more
Yes — via the API for lists and databases; the web tool handles single numbers.
Validate at scale, in production.
For live signup-form validation, bulk list scrubbing, or CRM-embedded checks with real carrier data, MCM's Lookup API returns the same result programmatically.