18 October 2026

International numbers vs opening an office: which makes more sense?

Compare the costs, reach and risks of an international number and opening an office before testing sales abroad, so you can choose how to enter a market.

To test sales in another country, it is often more prudent to start with an international number than to open an office. You can take calls on a number with a local prefix while you test demand and adjust how your team works.

In short:

An international number lets you take calls on a number with another country’s prefix without opening a physical office there.
An office gives you a physical presence and a local structure, but you need to check the costs, obligations and commercial need before committing.
An international number does not replace a local team, a business address or compliance with the rules in each country.
The decision depends on your sales goals, call volume, customer service needs and the numbering rules in the country you choose.

The key is to separate telephone presence from business presence. Then check what the line can do and what your existing team will still need to handle from its current location.

What is the difference between using international numbers and opening an office?

The difference is the commitment you make. An international number lets you test a phone presence with another country’s dialling code. An office means taking on space, staff and a local operation before you know whether there is enough demand.

For a small business, an international number means less upfront investment. You can see whether sales enquiries, calls and support requests come in. Your team can answer from its current location and adjust how it handles calls without relocating.

An office makes sense when customers need in-person service, staff on the ground or a permanent local operation. It also means budgeting for rent, hiring, connectivity and day-to-day management. Check whether calls generate opportunities before taking on those costs.

Before you decide, compare:

Presence: a phone presence versus a physical one.
Speed: setting up a line versus opening and equipping an office.
Operations: extensions and call forwarding versus local staff.
Validation: testing demand by phone before committing to a local operation.

Keep the cost of the number separate from the cost of calls. Check international call rates for the countries you plan to call.

When does an international virtual number make sense?

It makes sense when a company needs a local number to sell or support customers in another country, but is not ready to open an office, hire a local team or set up a legal entity there. The number lets the company test demand before committing to a larger local operation.

It is particularly useful for:

Testing a market: run a sales campaign and see whether contacts prefer to call a local number.
Supporting customers abroad: keep calls from each country separate without opening an office in every market.
Providing local support: offer a dedicated number for problems, enquiries and after-sales follow-up.
Supporting sales expansion: give the sales team a phone number suited to the target country.

A number does not replace the people who answer it. Before getting one, decide who will take the calls, during which hours and how they will handle each contact. If the company regularly calls abroad, it should also compare this option with a flat-rate international calling plan.

What can a business do with an international number?

A business can use an international number to receive calls and route them to its team through extensions, queues, business hours and call forwarding. Staff can handle calls from customers in another country without each employee managing the number separately.

The number becomes a single point of contact for sales or support. A business can connect it to a cloud PBX for businesses and set up call routing based on the type of enquiry:

Receive calls on a number in the chosen country.
Route them to specific extensions or several employees.
Set up a queue when several people handle calls.
Apply business hours and call forwarding based on team availability.

The international number is not tied to one phone. Team members can answer through their usual extensions and follow the same rules for distributing calls. Decide who answers, what happens outside business hours and which extension handles each type of enquiry.

What are the limits of selling abroad with only an international number?

An international number makes it easier for customers to call you. But it does not, on its own, establish a local business presence or replace applicable commercial, tax or regulatory obligations. Nor does it prove you have an office, a tax address or a team in the country whose calling code appears on the customer’s screen.

Before presenting the number as a local presence, check what it actually represents and how it can be used in the country you have chosen. Keep inbound calls separate from outbound sales campaigns. For the latter, check the channel, the caller ID displayed and the applicable requirements before contacting prospects. If you need to organise outbound calls, see how an auto dialler for contact centres works.

The number will not cover the market’s language, business hours, response times or follow-up on each opportunity. Decide who will answer calls, where they will work from and what process they will follow before you activate the line.

How do you choose the right international number for a small business?

Start with the country you want to reach and how your team will use the line. Then check the available prefix, number type, permitted calls, portability, caller ID, opening hours and call forwarding, support, and the provider’s terms.

Before you sign up, check these points:

Country and prefix: confirm that the number matches the market you want to serve.
Intended use: check incoming calls, outgoing calls, SMS and connection to your cloud PBX separately.
Day-to-day operation: review opening hours, call forwarding, extensions and which number appears when your team calls.
Continuity: ask about portability, activation, service issues and support channels.
Provider: compare providers’ terms against these requirements.

Do not choose a number by its prefix alone. The line must work for your team, your sales process and the way you handle customer calls. If a provider cannot clearly explain what the number can be used for, what configuration is included and how it handles service issues, ask before you sign up.

Frequently asked questions

Can a business in Spain receive calls on a number from another country?

Yes. A business in Spain can receive calls to a number from another country and have its usual team answer them, provided its supplier offers that number and supports the required setup. Before activating it, check the country, dialling code, availability, conditions of use and how calls will be delivered.

Can a team based in Spain answer calls to an international number?

Yes. Depending on the setup, the team can answer from Spain using an app, a compatible phone or a cloud PBX. The number gives customers a way to call the business in their chosen market; the team answers from its usual location. Set opening hours, assign people to handle calls, and decide where calls go when no one is available.

Can you make calls from an international number, or only receive them?

It depends on the number and the supplier’s terms. Some numbers support both incoming and outgoing calls; others only receive calls. Before signing up, confirm whether you can display the number as your caller ID on outgoing calls and what rates apply to each destination.

What is the difference between an international number and a geographic number?

An international number is associated with a country other than the one your business operates from. A geographic number may also be tied to a specific area within that country, depending on its numbering plan. The practical choice depends on your aim: taking calls from a national market, using a number associated with a particular city, or routing calls through a specific dialling code.

What should a small business check before getting a number in another country?

Check whether the dialling code is available, what type of number it is, which calls it supports, whether it can be displayed as your outgoing caller ID, and whether it connects to your cloud PBX. Also review the sign-up requirements, applicable costs, supplier support, number porting where available, and any restrictions in the country you choose.

Find out which international number fits your target market