351 Telephone Code: Complete Guide to Dialing and Using Portugal Phone Numbers
The 351 telephone code is the international country code for Portugal. If you see a phone number starting with +351, it means the call, text message, or verification code originates from or is directed to Portugal, including the mainland and the autonomous regions of Madeira and the Azores.
Quick Answer
The 351 prefix is Portugal's international country code. You need to dial +351 before local Portuguese phone numbers when calling from abroad. Portuguese numbers consist of nine digits, usually starting with specific prefixes depending on whether they are mobile lines, landlines, or VoIP services.
- Dialing format: +351 followed by the 9-digit local number.
- Mobile numbers in Portugal typically start with digits like 91, 92, 93, or 96.
- Verification codes and international SMS require the correct +351 prefix to deliver successfully.
What it means / how it works
International telephone codes are prefixes managed by the International Telecommunication Union (ITU). They direct traffic across global telecommunications networks. The 351 code specifically routes communications into the Portuguese national numbering plan.
When you place an international call or send an SMS to Portugal, you must include the country code so the originating carrier knows which global destination to target. Without the correct prefix, local networks cannot route your message or call.
Portugal does not use separate country codes for its islands. Both Madeira and the Azores share the same +351 country code. Furthermore, Portuguese numbers do not use city codes in the traditional sense anymore. Instead, fixed landline numbers begin with geographic area prefixes of two or three digits, such as 21 for Lisbon or 22 for Porto, followed by the subscriber number, making a total of nine digits.
Mobile numbers operate independently of geographic regions. All Portuguese mobile operators use nine-digit numbers starting with the digit 9. The second digit identifies the mobile network operator, such as MEO, Vodafone, or NOS.
Practical scenarios
- Calling family or friends in Lisbon: Dialing a Lisbon landline from outside Portugal requires the international prefix, country code, local area prefix, and subscriber number, formatted as +351 21 XXX XXXX.
- Reaching a Portuguese mobile phone: Sending a text message to a friend living in Coimbra requires the country code and their 9-digit mobile number, formatted as +351 9X XXX XXXX.
- Receiving an OTP from a Portuguese service: Registering for a local Portuguese online service, bank, or subscription platform often requires entering your phone number with the +351 prefix to receive a one-time password.
- Testing telecom routing: Software developers and QA testers routing automated notifications to Portuguese phone numbers must include +351 in their API payloads to ensure proper gateway delivery.
- Booking travel or reservations: Contacting hotels, rental agencies, or restaurants in the Algarve or Madeira from abroad requires prepending +351 to local reservation lines.
- Verifying digital accounts: Setting up online profiles that require regional phone authentication demands proper formatting of the +351 prefix to prevent validation errors.
Step-by-step
Dialing a Portuguese number correctly from another country requires a specific sequence of digits and symbols.
- Find the international exit code: If you are calling from a landline or mobile phone abroad, start by dialing your local exit code. For most countries using the North American Numbering Plan, this is 011. If you are calling from a mobile phone anywhere in the world, you can usually replace the exit code with the plus sign (+).
- Enter the country code: Type or dial 351 immediately after the exit code or plus sign.
- Enter the local subscriber number: Input the 9-digit local Portuguese number. Do not include any leading zero that might appear on domestic business cards, as international dialing requires dropping the domestic trunk prefix. For example, a local mobile number written domestically as 0912 345 678 must be dialed internationally as +351 912 345 678.
- Check for errors: Verify that the total number of digits following the plus sign equals eleven (351 plus the 9-digit local number).
- Initiate the call or message: Press the call button or send your SMS through your messaging gateway.
Safety/privacy/legal
Managing international phone numbers, including those under the 351 telephone code, involves understanding telecom regulations and data privacy laws. Portugal operates under European Union privacy frameworks, notably the General Data Protection Regulation (GDPR).
This means that phone numbers linked to individuals in Portugal are classified as personal data. Businesses and digital platforms operating within or targeting Portugal must handle phone verification data securely, obtain proper consent for marketing communications, and protect user databases from unauthorized access.
When using virtual phone numbers or temporary SMS reception services for Portuguese accounts, users must remain aware of platform terms of service. Many digital services restrict VoIP or temporary numbers to prevent fraud, automated signups, and credential stuffing. Always ensure that any number you use for account verification complies with the specific platform's acceptable use policies.
Furthermore, be cautious of unsolicited calls or suspicious text messages originating from unfamiliar +351 numbers. Like any region, Portugal experiences phone scams, phishing attempts, and automated spam. Never share verification codes, passwords, or personal financial details with unverified callers claiming to represent banks, utilities, or government agencies.
Best alternatives
If you need to interact with services requiring a Portuguese phone verification, test SMS workflows, or manage communications across borders, several approaches exist depending on your goals.
Traditional roaming allows you to use your home SIM card while traveling in Portugal, though carrier fees can be high. Local prepaid SIM cards purchased upon arrival in Portugal offer domestic rates but require physical presence, passport registration, and an unlocked handset.
For digital verification, developers and global users often utilize virtual SMS platforms. When public free numbers are unsuitable due to privacy leaks or delivery failures, paid private solutions like PVACodes can be considered as one SMS verification solution, offering dedicated virtual numbers for specific countries and platforms depending on current availability.
Always weigh the cost, privacy implications, and reliability of each alternative before selecting a method for handling international phone numbers or verification codes.
Frequently Asked Questions
What is the country code for Portugal?
The international country code for Portugal is +351. You must dial this prefix before any local landline or mobile number when calling or sending messages from outside the country.
Do I need to dial a 0 before the local number when using +351?
No. When dialing internationally with the +351 prefix, you must drop any leading zero that is used for domestic dialing within Portugal. For example, a local mobile number starting with 09... becomes 9... after the country code.
How many digits are in a Portuguese phone number?
Portuguese phone numbers consist of nine digits. This applies to both mobile lines and fixed geographic landlines across the mainland, Madeira, and the Azores.
How can I identify a Portuguese mobile number?
Portuguese mobile phone numbers always start with the digit 9. Common mobile prefixes include 91, 92, 93, and 96, followed by seven additional digits.
Can I use a +351 number to receive SMS verification codes?
Yes. Portuguese mobile numbers support standard SMS messaging and can receive one-time passwords and verification codes from online platforms, banks, and digital applications.
What should I do if my SMS to a +351 number fails to deliver?
Check that you included the correct +351 country code, removed any leading zero from the local subscriber number, and verified that the target number is an active mobile line rather than a landline.
Are Madeira and the Azores included under the 351 code?
Yes. Both autonomous regions of Portugal—Madeira and the Azores—share the same +351 country code and follow the standard Portuguese numbering plan.
Is it expensive to call a +351 telephone code from abroad?
Call and message rates depend entirely on your home carrier and your current service plan. International rates apply unless you use a VoIP provider or an internet-based communication app.
Why is my verification code from a Portuguese app not arriving?
Delivery failures often occur due to carrier routing delays, strict spam filtering, or platform restrictions against certain types of virtual or VoIP phone numbers.
Are virtual +351 numbers private?
Privacy depends on the provider. Public free online inboxes expose messages to anyone viewing the page, whereas paid private virtual numbers offer better confidentiality for personal use.
Conclusion
Understanding the 351 telephone code is essential for anyone communicating with Portugal, whether you are placing international phone calls, traveling through Lisbon, or managing digital account verifications. By keeping the correct nine-digit format, dropping domestic leading zeros, and respecting regional privacy standards, you can ensure smooth international communications.