Phone Number Generator
Generate 10,000–1,000,000 local-format test phone numbers.
NumberChecker.AI · Free Chrome tools
Clean your contact lists in Chrome.
Generate sample phone numbers and emails or clean contact lists with free browser-based tools. All four tools are available on the web platform; published generators are also available as Chrome extensions.
Chrome extensions and web tools
Phone Number Generator and Email Generator are now available in the Chrome Web Store. All four tools remain available on the NumberChecker web platform.
A free account is required. No payment is needed.
Phone Number Cleaner
Normalize, structurally validate, and deduplicate phone files locally.
Email Generator
Generate 10,000–1,000,000 sample email addresses for QA and demos.
Email Cleaner
Remove malformed, disposable, and duplicate emails locally.
How data is handled
Generators and Phone Number Cleaner do not make network requests. Email Cleaner’s optional mail-routing check queries only an email domain, never full addresses or file contents.
How these tools work
- Install a published generator from the Chrome Web Store, or open any tool on the web platform.
- Generate a 10,000–1,000,000 record test list, or choose a CSV/TXT file to clean.
- Copy or download the result. Your source file stays in your browser.
Product information updated August 2026. github.com/numberchecker-ai
