CLNPC (Canadian Lookup)

Lookup services for scrubbing non-mobile numbers can be configured for Prompt.io customer utilizing Twilio as their message network operator. To enable this functionality, you will need to contact Twilio support. An annual fee applies, as well as a per-lookup fee.

Twilio information on CLNPC

Twilio Lookups API is Not Returning Carrier Data for Canadian Phone Numbers
As of May 2018, Twilio is no longer able to provide all users carrier or portability details about Canadian phone numbers via the Lookup API. Per the Canadian Local Number Portability Consortium (CLNPC - http://www.clnpc.ca/ ), Twilio customers must have a contract with the CLNPC to receive this data.

Twilio Support

Twilio international phone number availability and their capabilities