Source note · E.164 numbering and dial string normalization
In libphonenumber, isPossibleNumber checks only length information, while isValidNumber does full validation using both length and prefix metadata.
Checked 2026-09-23
- Vendor
- Product
- libphonenumber
- Subsystem
- validation
- Deployment
- library
- Region
- not restricted
- Release range
- master as of 2026-09-23
- Checked
- 2026-09-23
Sources
- google/libphonenumber README — Google · tier 3 vendor-maintained repositories · README, Highlights of functionality
Cite this note
APA
WarmTransfer. (2026, September 23). E.164 numbering and dial string normalization: source note e164-numbering-libphonenumber-possible-vs-valid. WarmTransfer. https://warmtransfer.net/knowledge/claims/e164-numbering-libphonenumber-possible-vs-valid
BibTeX
@misc{warmtransfer-claim-e164-numbering-libphonenumber-possible-vs-valid,
title = {E.164 numbering and dial string normalization: source note e164-numbering-libphonenumber-possible-vs-valid},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/e164-numbering-libphonenumber-possible-vs-valid},
note = {Source note e164-numbering-libphonenumber-possible-vs-valid, checked 2026-09-23}
}