How to Check if a Phone Number is VoIP? – Check VoIP Number!

Voice over Internet Protocol (VoIP) phone numbers have emerged as a revolutionary alternative to traditional phone services, offering cost-effective and feature-rich communication solutions.

A VoIP phone number is essentially digital, enabling voice calls to be made using the internet instead of traditional phone lines. This means that users can make calls from anywhere worldwide if they can access a stable internet connection.

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With VoIP technology, users can enjoy additional benefits such as video calling, voicemail transcription, call forwarding, and conferencing. Moreover, VoIP phone numbers have proven more reliable and secure than traditional phone lines, making them an attractive option for businesses and individuals. VoIP technology’s increasing popularity has revolutionized how people communicate, leading to a significant shift toward a more connected and efficient future.

Today’s interconnected world is constantly bombarded with phone calls from diverse sources. However, one of the most frustrating types of calls is the VoIP phone number phone call. This is because these calls are usually automated, and the caller is not recognizable, making us feel powerless and vulnerable. Moreover, the frequency of these calls has increased in recent years, making it almost impossible to avoid them. From unwanted solicitation to predatory scams, VoIP phone number phone calls can be a constant source of annoyance and financial risk for individuals and businesses. Therefore, it is essential to understand the nature of these calls, their modus operandi, and how to identify and block them to minimize their effect on our daily lives. Therefore, how to tell if the number is VoIP?

How to Check if a Phone Number is VoIP?

To check if a phone number is VoIP, you need to use a Caller ID (CNAM lookup service) or reverse phone lookup tool to get information about the VoIP number carrier. VoIP numbers in caller ID show the business name (PlumberJohn, Chicago Roofers, etc.) or VoIP providers (Google Voice, Microsoft Teams Voice, Bandwidth, Vonage,  Nextiva, Ooma, Jive, etc.).

Landline phone numbers will always appear on Caller ID for big mobile phones operators such as  AT&T Mobility, Verizon, T-Mobile, and Sprint.

To check the carrier for a VoIP number, you can:

  • Look up the phone number on a carrier identification database, such as CarrierLookup or NumberPortabilityLookup.
  • Check the number’s area code and exchange to determine the carrier’s service area.
  • Check the number’s prefix or NPA-NXX code to see which carrier it belongs to.
  • Use a reverse phone lookup tool like Whitepages to see if the carrier is listed.
  • Contact the carrier directly and provide them with the phone number to ask for confirmation of ownership.
  • Check the number’s registration with the North American Numbering Plan Administration (NANPA) to determine the carrier.

Caller ID to check VoIP number

To better understand the Caller ID analysis of VoIP numbers, it is essential to know how VoIP works. VoIP service transfers the call’s signal through a private network of connected computers or the Internet rather than over traditional copper telephone lines. As a result, the caller’s information is turned into data packets and transmitted with the call. These data packets can be easily intercepted by malicious attackers, making verifying the call’s true identity crucial.

Caller ID providers utilize various techniques for analyzing VoIP numbers to determine their legitimacy. A prevalent method is exploring the call’s path or originating and terminating points. This technique analyzes the physical location and identifies the number’s service provider. This helps the Caller ID provider determine if the number is registered to an authorized user or if they use a virtual phone number.

Another technique is called “Phone Number Spoofing Detection.” Caller ID providers use this method to distinguish between legit and fake numbers. When a call uses a phony number, its path is disguised, making it challenging to track the originating point. Caller ID providers use this system to identify if a number has been spoofed, which means it has been made to look like a different number than the originating point.

Caller ID providers also analyze the call’s duration and frequency to identify scammers. For example, if a number continuously makes short-duration calls, it might be a red flag for spam calls. Caller ID providers use this information to black-list such numbers and prevent them from making suspicious calls.



Below is a list of Caller Id providers to check VoIP number

  1. Truecaller –
  2. Hiya –
  3. YouMail –
  4. Nomorobo –
  5. TrapCall –
  6. Mr. Number –
  7. Showcaller –
  8. CallerSmart –
  9. CallApp –
  10. Sync.ME –
  11. Whoscall –
  12. Call Blocker –
  13. RoboKiller –
  14. Should I Answer? –
  15. Call Control –

How to use the Reverse Lookup numbers tool to check VoIP numbers

With the increasing popularity of Voice over Internet Protocol (VoIP) technology, the need for reverse phone lookup providers to analyze VoIP numbers has become more critical. Reverse phone lookup providers use various tools and techniques to analyze VoIP numbers, which can help identify the owner of the number and provide valuable information about their location and other personal details.

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Reverse Lookup number tools use:

  1. Database searches: Reverse phone lookup websites may access large databases containing information on VoIP numbers. They may be able to provide information such as the owner’s name, address, and other contact information associated with the number.
  2. Web searches: Reverse phone lookup services may also conduct web searches to gather information on a VoIP number. This may include searching social media sites, business directories, and other online sources for information on the number.
  3. Caller ID data: Some reverse phone lookup services may also use caller ID data to provide information on a VoIP number. This can include information on the caller’s location and other details about the call.

One of the main challenges of analyzing VoIP numbers is that they do not have a physical location. Instead, VoIP calls are made over the internet, and the user can choose their area code or phone number, making it difficult to trace the call’s origin. However, reverse phone lookup providers use sophisticated algorithms to analyze VoIP numbers and provide accurate and relevant information about the caller.

One of the mthe essentials reverse phone lookup providers uses is a comprehensive database that contains information on millions of phone numbers, including VoIP numbers. This database is constantly updated with new information, including the owner’s name, address, and other personal details. The database is also integrated with various other sources, including social media and public records, to provide a comprehensive phone number owner profile.

Another tool used by reverse phone lookup providers is advanced analytical software. This software uses machine learning algorithms to analyze the calling patterns and behavior of the phone number. The software can identify important ways, such as locations and times of calls, and use this information to identify the owner of the number.

Reverse phone lookup providers also use advanced data visualization techniques to help users understand the information provided about the VoIP number. This includes interactive maps that show the location of the phone number, as well as charts and graphs that provide valuable insights into the calling patterns and behavior of the number.


Below is the list of reverse phone lookup services that you can use to check VoIP numbers:

  1. Whitepages –
  2. Spy Dialer –
  3. Truecaller –
  4. BeenVerified –
  5. Intelius –
  6. Zlookup –
  7. NumLookup –
  8. CallerSmart –
  9. PeopleFinders –
  10. Spokeo –


Caller ID providers use various techniques to analyze VoIP numbers and prevent fraudulent activities from untraceable numbers. With increasing digitalization, verifying the legitimacy of calls and taking necessary measures to ensure secure communication is essential. Hence, the importance of Caller ID providers cannot be overemphasized in today’s context, as they provide vital services that help protect businesses and individuals from unscrupulous activities.

Considering the rising number of spam and scam calls, reverse-lookup phone numbers and caller ID tools have become necessary. These tools provide a convenient and reliable way to identify unknown callers and avoid potential risks. By using them, individuals and businesses can ensure their safety and maintain a secure communication environment. Therefore, it is essential to remain vigilant and use these tools to stay protected.

Igor Milosevic
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