How to Use the +91 Country Code: A Guide for SMBs and Startups

Whether you're closing a deal in Mumbai or coordinating with a support team in Bangalore, understanding how to format and dial Indian phone numbers correctly is key for effective international communication.

This quick guide will walk you through everything you need to know about the +91 country code, dialing formats, and how DialLink makes international calling simple and reliable for your business.

What Is the 91 Country Code?

+91 is the country code for India, which uses a closed numbering plan. Indian phone numbers vary slightly in format depending on whether the phone number is for a landline or mobile device, but all require the +91 prefix when dialed internationally.

Here’s the typical structure:

• Country Code: +91
• Area Code (for landlines): 1–4 digits
• Subscriber Number: Typically 6–8 digits (depending on the area code)

For mobile numbers, no area code is used. Instead, they are 10-digit numbers beginning with specific digit ranges (commonly starting with 7, 8, or 9).

Common Pitfalls in International Number Formatting

Incorrect formatting can cause delays, failed calls, and CRM errors, especially when your team is handling high volumes of customer interactions. Here are common issues with Indian phone numbers:

• Omitting the country code (+91): Always include the +91 prefix for calls and messages from outside India.
• Using local prefixes like “0”: Many landline numbers in India include a “0” prefix when dialed locally. This must be removed when dialing internationally.
• Not distinguishing landline vs mobile: Mobile numbers are always 10 digits; landlines vary based on region and require an area code.
• Inconsistent formatting in systems: CRM and VoIP platforms typically require E.164 format (e.g., +919812345678) for consistency and reliability.

Keeping your phone number formats standardized across systems helps reduce failed calls and improves automation efficiency.

Make International Calling Easy with DialLink

DialLink is the AI-powered cloud phone system built for SMBs and startups. Whether you're supporting offshore teams, vendors, or clients in India, DialLink helps you stay connected, professional, and responsive.

Here’s how DialLink helps simplify international communication:

• Affordable international calling — no complicated setup or hidden fees
• AI voice agents — automate calls for support, bookings, and follow-ups
• Multi-device access — mobile, desktop, and desk phone compatibility
• Built-in business messaging — communicate instantly with Indian contacts
• CRM and support tool integrations for seamless tracking

DialLink makes global business communication scalable and intuitive — perfect for startups and small businesses.

Common Indian Number Format Examples

Note: Indian toll-free numbers like “1800” cannot always be dialed from outside India. International callers should use alternate standard numbers when available.

How to Read and Format Indian Numbers

Indian phone numbers typically follow one of two structures:

Mobile Numbers:

• Format: +91 XXXXXXXXXX
• Details: Always 10 digits, typically starting with 7, 8, or 9.

Landline Numbers:

• Format: +91 (area code) (subscriber number)
• Details: Area codes are 1–4 digits, and subscriber numbers are adjusted to keep the total at 10 digits.

Format Variations

• International Format (E.164): +919812345678 — standardized for CRMs and VoIP systems
• Local Format (within India): 09812345678 or 022 23456789 — used domestically (note the “0” prefix)
• International Dialing Format: 00 91 9812345678 — used when dialing from countries with “00” exit codes (like the UK or Australia)

Best Practices for SMBs

• Save all phone numbers in international format: +91 XXXXXXXXXX.
• Remove local prefixes like “0” when storing landline numbers internationally.
• Standardize number formatting across systems to avoid syncing issues.
• Use CRM integrations to streamline contact enrichment and call tracking.

Consistent formatting ensures better deliverability, fewer dialing errors, and a more professional experience across customer communications.