To acquire a phone number, follow these steps:

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Navigate to the Endpoints menu.
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Click on the "New Endpoint" button.
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Select "Incoming Phone Number" from the options.
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Filter the available numbers by area code and/or postal code then hit the Search button.
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Optionally, associate the new phone number with a Customer.
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Once you've identified the desired phone number, click the "Buy" button.
Upon completing the purchase, the phone number becomes active and ready for use. You can then associate it with a Flow to initiate communication processes.
Deleting a Phone Number
In general, we recommend deleting a Phone Number only if you are absolutely certain that it will never be used again. It's important to understand that deleting a phone number releases it on the Twilio side, which means there's no guarantee you'll be able to retrieve the same number again. Deleting a phone number permanently releases it.