Phone Number Validator & Carrier Lookup
Validate international phone numbers with E.164 parsing, detect mobile vs landline vs VoIP line types, and lookup original telecom carriers client-side.
Phone Number Input & Country Selection
Carrier & Line Intelligence
Telecommunications network classificationStandardized Phone Formats
Ready-to-use encodings for APIs and telecoms+14155550199
+1 415-555-0199
(415) 555-0199
tel:+1-415-555-0199
About this tool
How to use it
- Enter any local or international telephone number with or without the country calling code.
- Verify ITU-T E.164 formatting, country allocation, area code, and line type (mobile, landline, VoIP, toll-free).
- Identify original telecommunications network operator / carrier and regional timezones.
- Export normalized phone strings in E.164, National, International, and RFC3966 formats.
Why it matters
SMS delivery platforms, user onboarding forms, and customer verification pipelines must validate telephone numbers to prevent failed OTPs and filter invalid lines. This utility runs client-side phone parsing, carrier mapping, and format conversion with zero tracking.
When to use it
Use when testing phone regex patterns in software engineering, cleaning marketing contact lists, validating international call formats, or verifying whether a number is a mobile line capable of receiving SMS.
Common questions
What is the E.164 international phone standard?
E.164 is an international telecommunication numbering plan established by the ITU-T. It specifies that a phone number can contain a maximum of 15 digits including country code, with no spaces or punctuation, preceded by a plus sign (+).
Can this tool distinguish between mobile and landline numbers?
Yes. Based on national numbering plans and area code allocations, the tool classifies numbers into Mobile, Landline (Fixed Line), VoIP, Toll-Free, or Shared Cost categories.
Are entered phone numbers stored or logged on a server?
No. The entire validation and carrier lookup runs 100% client-side in your local browser with complete privacy.