Twilio Changelog

Additions and changes to the Twilio platform

Programmable Voice

US/CA Unassigned Calling Number Blocking GA

Twilio is now blocking outgoing calls that use unassigned calling numbers for Programmable Voice and Elastic SIP Trunking. Unassigned numbers are numbers not in service. This change will protect you and the platform from unlawful From number overrides. 

You can see calls blocked by inspecting Error notifications, 13247, 21212, 32206