Use the phone number validator
Choose Single Number to check one phone number or Multiple Numbers to process a pasted list. The tool returns validation, country information, number type, and formatting results when available.
Validate and copy one number
- Open Single Number.
- Enter a phone number in the input. The examples show international formats such as
+1and+44. - Review the result in the breakdown area.
- Select Copy to copy the displayed single-number result.
Validate multiple numbers and export CSV
- Open Multiple Numbers.
- Paste numbers into the text area, using one number per line or comma-separated values.
- Review the bulk results after the input is processed.
- Select Copy CSV to copy the results, or select Download CSV to save them as a CSV file.
The page does not document a maximum number of bulk entries.
What the validation checks
The tool performs structural phone-number validation using international numbering information. Its results include country detection, number type, and formatting variations where available. E.164 formatting is part of the tool’s documented purpose.
A valid structural result does not confirm that a number is assigned, reachable, or active.
Processing limits and data handling
Parsing is performed by browser-side JavaScript. The directly inspected page script shows no visible fetch, XMLHttpRequest, or sendBeacon submission. It imports libphonenumber-js from https://esm.sh/libphonenumber-js@1. These implementation details do not establish an absolute privacy guarantee or legal compliance.
Frequently Asked Questions
How do I format phone numbers to E.164 standard?
Enter one number in Single Number, or paste a list in Multiple Numbers. The tool generates its available formatting results, including E.164 formatting where provided. Bulk results can be copied or downloaded as CSV.
Is bulk phone number validation free?
Yes. The page provides the bulk validation workflow without a subscription or signup step in the tool interface.