How to Use the +51 Country Code: A Guide for SMBs and Startups

Whether you're managing operations in Lima or supporting customers in Arequipa, understanding how to format and dial Peruvian phone numbers correctly is essential for smooth and reliable communication.

This quick guide walks you through how to use the +51 country code, number formatting tips, and how cloud-based phone systems like DialLink can simplify international calling for growing businesses.

What Is the 51 Country Code?

+51 is the country code for Peru. To make a call to a Peruvian number from outside the country, you’ll need to dial the international access code (such as 011 from the U.S.), followed by +51, and then the local phone number.

Here’s how a standard Peruvian number breaks down:

• Country Code: +51
• Area Code: 1 to 3 digits (e.g., 1 for Lima)
• Subscriber Number: 6 to 7 digits

Example Format: +51 1 234 5678 (Lima).

Common Pitfalls in International Number Formatting

Failing to follow proper number formatting can lead to failed connections, CRM mismatches, or compliance issues. For Peruvian phone numbers, common issues include:

• Omitting the country code: Forgetting to include +51 can cause the call or message to fail.
• Confusing mobile vs. landline prefixes: Mobile numbers typically start with 9, while landline codes vary by region.
• Inconsistent formats across platforms: Ensure E.164 format is used where required (e.g., +51912345678) to avoid sync issues in CRMs or VoIP tools.

Make International Calling Easy with DialLink

DialLink is an AI-powered cloud phone system designed for SMBs and startups. It helps businesses simplify international communications—without complicated setup or costly infrastructure.

Here’s how DialLink makes it easier:

• International calls – Make affordable international calls with no complex setup or hidden fees
• AI voice agents – Automate routine calls, like client support or booking inquiries
• Mobile, desktop, and desk phone support – Make calls anytime, from anywhere
• Professional call handling tools – Voicemail, call routing, transcripts, and more
• Business messaging – Send and receive messages from Peruvian contacts

Whether you’re managing a remote team or managing outsourced operations in Peru, DialLink makes it easier than ever to stay connected and professional, without the cost or hassle of traditional phone systems.

Common Peru Number Format Examples

How to Read and Format Peruvian Numbers

Understanding each part of a Peruvian number helps you avoid errors and maintain consistency:

• +51 – The international dialing code for Peru. Required for all calls from outside the country.
• Area Code – One to three digits depending on the region. Lima uses 1, while provinces have longer codes.
• Subscriber Number – The remaining 6–7 digits.

Format Variations

• International Format (E.164): +51912345678 — used in CRMs and VoIP systems
• National Format (Peru): 912 345 678 (mobile), 01 234 5678 (landline)
• Dialing from the US: 011 51 1 234 5678

Best Practices for SMBs

• Always use full international format (+51 XXX XXX XXX) for consistency across systems.
• Avoid storing numbers without country codes, especially if your business handles calls globally.
• Ensure consistency in formatting across your CRM, phone system, and communication tools.

By understanding how each part of a Peru phone number works, SMBs can reduce miscommunication, improve call connection rates, and maintain a professional image in international interactions.