351 Which Country Code? Everything You Need to Know About Calling and Messaging Portugal

The country code +351 belongs to Portugal. If you received a phone call, a text message, or a WhatsApp verification code starting with +351, the communication originated from or is routed through the Portuguese telecommunications network.

What it means / how it works

An international country code is a numerical prefix used to route telephone calls and text messages across global telecom boundaries. The International Telecommunication Union (ITU) assigns these codes to specific countries or integrated numbering zones.

In the case of +351, the digits identify Portugal within the European numbering zone. When someone dials a Portuguese phone number from another country, they must first dial their country's international exit code (such as 00 in most of Europe or 011 in the United States and Canada), followed by 351, and then the local phone number.

Portuguese phone numbers do not use fixed city or regional area codes in the traditional sense. Instead, landline numbers begin with specific digits indicating geographic regions (for example, 21 for Lisbon and 22 for Porto), while mobile numbers typically start with digits like 91, 92, 93, or 96, depending on the original mobile network operator.

Practical scenarios

• Receiving unexpected calls: You might see a +351 number on your caller ID if a business, hotel, or individual based in Lisbon or Porto is trying to reach you.
• Online account verification: Many global platforms send SMS verification codes via international gateways, and a Portuguese virtual number may be assigned to deliver your one-time password (OTP).
• Calling friends or family: If you live outside Portugal and need to reach someone living in Lisbon, Coimbra, or Faro, you must prepend +351 to their local 9-digit number.
• Booking travel arrangements: When calling Portuguese airlines, hotels, or rental car agencies from abroad, dialing +351 ensures your call connects to the correct local establishment.
• Remote customer support: Multilingual customer service centers for international brands often operate out of Portugal, resulting in +351 numbers appearing on your phone during support interactions.
• Business expansion: Companies working with European clients frequently interact with Portuguese vendors, suppliers, or outsourced teams using +351 business lines.
• WhatsApp and messaging apps: Setting up a messaging account using a Portuguese SIM card or virtual line will associate your profile with the +351 prefix.

Step-by-step

If you need to dial a phone number in Portugal from another country, follow these precise steps to ensure your call connects successfully.

1. Find your country's international exit code. For example, dial 00 if you are calling from the UK or most of Europe, or 011 if you are calling from the US or Canada. If you are using a mobile phone, you can usually substitute the plus sign (+) for the exit code.
2. Enter the country code for Portugal, which is 351.
3. Enter the local Portuguese phone number. Portuguese numbers are typically nine digits long for both landlines and mobile phones.
4. Check the complete sequence before pressing call. A complete number dialed from the US should look like +351 XX XXX XXXX or 011 351 XX XXX XXXX.
5. Place the call and wait for connection. Keep in mind that time zone differences (Western European Time / Greenwich Mean Time) may affect when businesses are open to answer your call.

Safety/privacy/legal

Seeing an unfamiliar international code like +351 on your phone can raise security questions. While Portugal is a stable European Union member state with strict telecommunications regulations, scammers can use caller ID spoofing to make international calls or texts appear as though they originate from +351 when they actually come from elsewhere.

If you receive a missed call from an unknown +351 number, do not call it back automatically. Returning international calls to unknown numbers can result in unexpected premium-rate charges billed by your carrier.

When dealing with SMS verification codes or online account messages from a +351 number, verify that you actually requested a code from a service you use. If you receive an OTP out of nowhere, ignore it and do not share the code with anyone. Phishing campaigns often use spoofed international numbers to trick users into handing over account access credentials.

Best alternatives

If you are managing online accounts, testing mobile applications, or handling international digital marketing campaigns, you may occasionally need to interact with phone verification systems or receive SMS messages from various regions without exposing your primary personal phone number.

While public free web services offer temporary numbers, they are often shared among multiple users, leading to privacy risks and failed verification attempts. For users who need dedicated, private access to virtual phone numbers across different countries, options like PVACodes can be considered as an SMS verification solution, depending on the specific application, country availability, and operational requirements.

Frequently Asked Questions

Is +351 a mobile or landline code?

+351 is a country code for the entire nation of Portugal, covering both landlines and mobile phones. You cannot tell whether a number is mobile or landline based solely on the +351 prefix; you must look at the first digit of the local number that follows.

Which country uses the +351 country code?

The +351 country code belongs to Portugal. This includes mainland Portugal as well as the autonomous regions of Madeira and the Azores.

How do I dial a +351 number from the United States?

To call a Portuguese number from the US, dial 011 (the US exit code), then 351 (Portugal's country code), followed by the 9-digit local phone number. Alternatively, you can type a plus sign (+) followed by 351 and the local number on your mobile phone.

Are calls to +351 expensive?

Call costs depend entirely on your home country's telecom provider and whether you are calling a landline or a mobile number in Portugal. Check your carrier's international calling rates before placing long conversations.

Why did I receive a text message from a +351 number?

You might receive a text message from a +351 number if you signed up for an online service, app, or website that uses a Portuguese SMS gateway or virtual number provider to dispatch verification codes.

Is it safe to answer a call from a +351 number?

Answering a legitimate incoming call is generally safe, but if you do not know anyone in Portugal and are not expecting an international call, it could be a telemarketing call or a scam attempt. Exercise caution before sharing personal information.

What should I do if a verification code from a +351 number fails?

If an OTP or verification code from a Portuguese number fails to arrive, check your network signal, ensure your device is not blocking international messages, wait a few minutes for carrier delivery delays, or request a new code from the platform.

Do Portuguese phone numbers have city codes?

Traditional geographic area codes are integrated into the 9-digit local subscriber number. For example, numbers starting with 21 typically indicate Lisbon, while 22 indicates Porto.

Can I use a +351 number for WhatsApp verification?

Yes, WhatsApp accepts legitimate Portuguese phone numbers and virtual lines for account registration and SMS or voice call verification, provided the number can receive external messages.

How can I protect my personal number when registering online?

If you want to keep your personal phone number private during online registrations or app testing, you can use specialized virtual phone number services designed to handle incoming SMS verification codes safely.

Conclusion

The country code +351 is your direct line to Portugal. Whether you are placing an international phone call to Lisbon, verifying a digital account, or analyzing incoming global messages, understanding how this country code functions helps you communicate securely and efficiently across borders.