What is a non-VoIP number?
A mobile carrier line, not an internet-telephony DID. Apps often accept this class when they reject VoIP ranges.
Short answers for non-VoIP, VoIP, OTP, and the other labels buyers mix up. Order from the product page once the term is clear.
Answer first: a non-VoIP number is a mobile carrier line. A VoIP number is an internet-telephony DID. An OTP is a one-time code. This glossary defines those terms. Prices and ordering stay on the product pages linked from each entry.
Last updated: 15 October 2026
A non-VoIP number is a mobile carrier line, not an internet-phone DID. Learn how apps tell them apart and where to order one. From $0.02.
A VoIP number is an internet-telephony DID. See why many apps reject it for SMS OTP and when it is still the right tool. Compare routes before you pay.
An OTP is a one-time password sent to prove you control a channel. See how SMS OTPs work, how long they last, and how billing treats them.
An SMS gateway moves text between an app and a phone network. Learn how gateways differ from a verification inbox, and which one you need.
A temporary phone number lasts for one verification window. See what it includes, what it does not keep, and where to order a private line.
A long-term rental keeps the same SMS number beyond one code. See when reuse matters, and how it differs from a one-time OTP order.
A carrier lookup asks which network hosts a phone number. Learn what line type means for OTP, and what this site does not claim to look up.
Virtual number is an overloaded label. See the three products people mix up, and which one matches an SMS OTP order on NonVoipOtp.
A mobile carrier line, not an internet-telephony DID. Apps often accept this class when they reject VoIP ranges.
No. Definitions live here. Ordering and live prices stay on the service and pricing pages.