Yes. By line-type classification, a Google Voice number is a VoIP number. Twilio's Line Type Intelligence docs define non-fixed VoIP as "A virtual phone number obtained online without requiring a physical device. For example, Google Voice or Enflick." Separately, Google's Voice Help says some websites, such as banks or subscription services, won't send text messages to Google Voice numbers.
The classification comes from Twilio's documentation. Google's help page covers the texting behavior. For TextNow, see Is TextNow a VoIP number?.
What does "non-fixed VoIP" mean?
Non-fixed VoIP is a line type that businesses can look up. Twilio's Line Type Intelligence exists to "identify the carrier and phone line type, such as mobile, landline, fixed VoIP, non-fixed VoIP, toll free, and more," and it is "available for phone numbers worldwide."
| Line type | Twilio's definition | Example given |
|---|---|---|
| Non-fixed VoIP | A virtual phone number obtained online without requiring a physical device | Google Voice or Enflick |
| Fixed VoIP | A virtual phone number associated with a physical device | Comcast or Vonage |
| Landline | A landline number that generally can't receive SMS messages | None listed |
The deciding detail is the physical device. A number you get online with no hardware behind it falls under non-fixed VoIP. A site that runs this kind of lookup on a Google Voice number can see that type instead of "mobile." For the longer explanation of how line type gets read at signup, see Non-VoIP numbers explained.
Why isn't a Google Voice verification code arriving?
Google's help page points to three possible causes:
- The site doesn't send to Google Voice. "Some websites, such as banks or subscription services, won't send text messages to Google Voice numbers." The refusal is the receiving site's decision. It is not a fault in your Google Voice account.
- The text was marked as spam. A code can arrive and land in the Spam folder instead of your inbox.
- Messaging is built for conversation. "Google Voice messaging is intended only for interactive conversations. It's not intended for bulk messaging, which can result in messages being reported as spam and blocked."
What can you check on your side?
- Check Spam first. Google says: "If you don't get a text you're expecting, check if it got marked as spam. At the top left, click Menu, then Spam."
- Use your carrier number if the site won't send. For sites that refuse Google Voice, Google's advice is "you may need to use your mobile carrier number."
For other causes that apply to any number, see Not receiving verification codes?.
Is there a Google Voice alternative for verification codes?
For verification, the alternative is a non-VoIP carrier number on a site that accepts it. Your own mobile carrier number is the first option. If you want a separate number, VoidMob (mobile proxies on real 4G/5G devices, non-VoIP SMS verification and eSIM) sells only non-VoIP carrier numbers, in three forms:
- One-time code: a US number active for 15 minutes. If no SMS arrives in that window, you get an automatic refund, except on services marked non-refundable. Once a code is delivered, the order can't be refunded.
- Rental: a US number for 3, 7, 14 or 30 days, bought for one service. It receives that service's texts for the whole term.
- Dedicated monthly number: a line reserved to you and not tied to one service. It is priced per country on the dedicated numbers by country page.
Dedicated non-VoIP number vs OTP explains which tier fits which job. VoidMob does not offer numbers for banking, payments, lending, investing, gambling, government, identity-verification or gift card services. For those, use your own carrier number.
Can I receive texts on Google Voice abroad?
Yes. Google's help says: "You can get text messages from anywhere in the world." Where you are does not limit receiving texts.
Does a paid Google Voice plan text outside the US?
No. Google states: "For paid Voice subscriptions, text messaging is available only in the US."
Can I text short codes from Google Voice?
No. Google's tip says you can't send texts to five- or six-digit short code numbers. That rule covers sending texts.
Which number sends my replies if I have two Voice numbers?
Your main number. Google says you can only send texts from your main number, and a reply to a text received on your second number is sent from the main one.
Why did my bank refuse my Google Voice number?
Google's help says some websites, such as banks, won't send text messages to Google Voice numbers, and that you may need to use your mobile carrier number. VoidMob does not sell numbers for banking, so use your own carrier number.
Get codes on a non-VoIP carrier number
One-time US numbers with an automatic refund if no code arrives, multi-day rentals, or a dedicated monthly line.