Area code 581 serves Quebec, Canada. Eastern Time. In service since September 2008 as an overlay of 418.
Quebec
Area code 581 · Canada · Eastern Time
The state and time zone on this page ride every phone parse. Send any number and they come back with validity, line type, and clean formats.
curl -s "https://api.parseapi.com/phone/5815550100" \ -H "X-Api-Key: $PARSEAPI_KEY"