Numbers
+1 4123608462 (Pittsburgh PA)
The intention of the voicemail line is to provide a number where one could leave a voicemail message. This is especially important for providing a telephone number for Domain Registry information. By using the voicemail number, it saves me from having to deal with bad actors that would wish to at the very least – annoy me. All calls go to voicemail immediately.
Carriers
I am not going to disclose the carrier, but it is the same carrier as my home phone service, so if you were to know that carrier, you would know the carrier for the voicemail number.
Devices
There is no device attached to this number since it is for voicemail only. Since there is no actual device attached to this phone number, I will use my home phone to listen and note any voicemail I should have.
Conclusion
This phone number is relatively cheap at $6/month. With that said, it is a small price to pay for having a piece of mind to not deal with bad actors. Since this is not a cellular line, there is no choice to steal this number to get 2FA codes.