What is a Virtual Phone Number?

globe surrounded by different colored telephones with numbers on them and skyscrapers in background

A virtual phone number is not a distant concept; it's a standard phone number issued by the same governing bodies that regulate mobile and landline numbers. What sets it apart is the direct control it offers. With a virtual phone number, you're one level closer to configuring how your number works, such as setting up call forwarding. Unlike numbers tied to mobile companies, which might require more "hops" or intermediaries, virtual phone numbers streamline the process, putting you in the driver's seat of your communication needs.

Unlike traditional phone numbers, virtual phone numbers like FlyNumber aren't tied to specific devices or locations. They operate over the internet but can be forwarded to regular phone numbers, allowing you to receive calls without needing an internet connection. This adaptability makes them suitable for various communication needs, from personal use to global business operations.

The core technology behind virtual phone numbers is VoIP. It enables voice calls over the internet by converting analog voice signals into digital data packets. This conversion allows voice communication to be transmitted through the same channels as other internet data, such as emails or documents.

DID, or Direct Inward Dialing, is a specific aspect of virtual phone numbers. It allows companies to assign individual numbers to each person or workstation without needing a physical line for each connection. While DID is a term often used by IT professionals, it's essentially a part of the broader virtual phone number landscape.

When you call a virtual phone number, the call is routed over the internet and can be received on various devices, including computers, smartphones, or VoIP desk phones. What's more, it can even be forwarded to a standard phone line, allowing the recipient to answer the call without needing an internet connection. This flexibility enables businesses and individuals to maintain a local presence anywhere in the world, free from the constraints of physical offices or landlines, and seamlessly integrates with traditional telephony.


Security is paramount in the world of virtual phone numbers and VoIP. Unlike traditional telephony, where security might be taken for granted, virtual phone numbers operate over the internet, introducing new challenges and opportunities for safeguarding communication.

At the core of VoIP security is encryption. Virtual phone numbers often come with advanced encryption protocols, such as TLS and SRTP, that scramble voice data into an unreadable format. This ensures that even if the data is intercepted, it remains indecipherable to unauthorized parties. Encryption adds a robust layer of protection, keeping your calls private and secure.

Authentication is another vital aspect of security. It verifies the identity of the parties involved in the call, preventing unauthorized access. Two-factor authentication (2FA) and secure login credentials are common practices that add an extra layer of security, ensuring that only authorized users can access the virtual phone number.

Virtual phone numbers also benefit from the continuous monitoring and threat detection. Security systems can detect unusual patterns or behaviors, such as multiple failed login attempts or suspicious call patterns, and take immediate action. This proactive approach helps in identifying and mitigating potential threats before they become a problem.

Moreover, virtual phone numbers offer the flexibility to set customized security policies. Businesses can tailor the security settings to meet their specific needs and compliance requirements. Whether it's restricting access to certain geographic locations or implementing stringent call recording policies, virtual phone numbers provide the tools to create a secure communication environment tailored to individual needs.

Lastly, the integration with existing security infrastructures is often seamless. Virtual phone numbers can work in conjunction with firewalls, VPNs, and other security measures already in place, enhancing the overall security posture without requiring significant changes to existing systems.

Text messaging (SMS)

Virtual phone numbers, which operate over the internet, can often send and receive SMS just like traditional phone numbers. However, the relationship between SMS and virtual phone numbers is complex and varies across different regions and use cases.

In many advanced North American and European countries, virtual phone numbers come with SMS capabilities. This enables businesses and individuals to send and receive text messages through their virtual numbers, expanding their communication channels beyond voice calls. It's a feature that adds convenience and flexibility, especially for businesses that rely on text messaging for customer engagement.

However, not all countries allow SMS on their virtual phone numbers. Regulations and technological limitations can restrict SMS functionality in certain regions. This discrepancy highlights the importance of understanding the specific capabilities and restrictions of virtual phone numbers in different countries, especially for businesses operating internationally.

Another critical aspect to consider is the use of virtual phone numbers for 2FA (Two-Factor Authentication) or verification texts from financial institutions and other sensitive services. While virtual phone numbers can technically receive these texts, some companies may block them due to concerns about potential abuse or scams. This limitation can affect the usability of virtual phone numbers for certain verification processes, and users should be aware of this potential constraint.

Routing and Forwarding

Routing and forwarding are at the heart of what makes virtual phone numbers so adaptable and efficient. Unlike traditional phone numbers that are tied to specific locations or devices, virtual phone numbers can forward calls to any regular phone number worldwide. This includes connecting to cloud-based phone systems or directly linking to VoIP/SIP (Voice over Internet Protocol/Session Initiation Protocol).

The ability to route calls through different channels provides unparalleled flexibility. Whether it's forwarding calls to a mobile phone while on the move, routing them to an office landline, or connecting to a VoIP service for international communication, virtual phone numbers offer seamless transitions between various platforms. This ensures that you never miss a call, regardless of your location or the device you're using.

With Flynumber, answer with VoIP and it's unlimited incoming minutes. This cost-effective feature is particularly beneficial for businesses that handle high call volumes, providing a scalable solution without the burden of excessive charges. It's a modern approach to telecommunication that leverages internet technology to break down barriers and create more accessible and affordable communication channels.


Porting, in the context of virtual phone numbers, refers to the process of transferring a phone number from one service provider to another. When you acquire a virtual phone number, you're not locked into a permanent relationship with your provider. You pay a monthly fee to "own" the number, but that ownership is flexible.

The ability to port a virtual phone number ensures that you maintain control and continuity. Whether you're seeking better pricing, more features, or improved customer service, you can switch providers without losing the phone number you've established with clients, customers, or personal contacts. This is vital for businesses and individuals who rely on consistent communication channels.

Porting is typically a straightforward process, but it may require some coordination between the current and new providers. Regulations and standards ensure that this process is conducted smoothly, with minimal disruption to your services. However, it's always wise to consult with both providers to understand any potential fees, timelines, or specific requirements related to the porting process.

Government Regulations

Virtual phone numbers are not a free-for-all; they are governed by strict regulations and oversight. These numbers are sourced from the same regulatory bodies that large mobile companies and telecom giants obtain their numbers from. Managed by local government entities, they ensure that virtual phone numbers adhere to the telecommunication laws and standards of the respective country.

Each country has its unique system for managing and distributing these numbers, ensuring that they are unique, properly registered, and in compliance with local laws. For example, in Australia, the requirements for local numbers may differ from those for mobile numbers. This can include special registration or documentation to verify the user's identity or location.

Some countries may have more stringent regulations, requiring businesses or individuals to provide specific information or meet particular criteria to obtain a virtual phone number. These regulations are in place to prevent fraud, protect consumer rights, and maintain the integrity of the telecommunication system.


Virtual phone numbers have come a long way since their inception, transforming from a niche technology into a mainstream communication tool. The steady increase in searches for "virtual phone number" over the last 20 years (up to 2023), as evidenced by Google Trends, is a testament to their growing popularity and acceptance.

The success of platforms like Google Voice illustrates the practicality and appeal of separating phone numbers from traditional mobile or large telecom landlines. By doing so, individuals and businesses can gain more control, flexibility, and cost-effectiveness in their communication needs.

2004 to 2023 google trends chart for virtual phone number showing steady increase over the years

With advancements in technology, adherence to government regulations, and a focus on security and customization, virtual phone numbers are not just a passing trend. They are here to stay, poised to continue growing and evolving in response to the ever-changing communication landscape.

Whether for personal use or global business operations, virtual phone numbers offer a smart and forward-thinking solution. They represent a shift towards more agile, adaptable, and user-centric communication, aligning with the needs and expectations of today's connected world.

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