Source note · International phone number requirements
Twilio explains that some regulators require local or national numbers to be tied to an address within the locality of the number's prefix.
Checked 2026-09-25
- Vendor
- Twilio
- Product
- Twilio Phone Numbers
- Subsystem
- addresses
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Phone Number Regulatory FAQ — Twilio · tier 2 current vendor documentation · FAQ: Why assign addresses matching phone prefix locality?
Cite this note
APA
WarmTransfer. (2026, September 25). International phone number requirements: source note international-number-requirements-twilio-prefix-locality. WarmTransfer. https://warmtransfer.net/knowledge/claims/international-number-requirements-twilio-prefix-locality
BibTeX
@misc{warmtransfer-claim-international-number-requirements-twilio-prefix-locality,
title = {International phone number requirements: source note international-number-requirements-twilio-prefix-locality},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/international-number-requirements-twilio-prefix-locality},
note = {Source note international-number-requirements-twilio-prefix-locality, checked 2026-09-25}
}