Comprehensive Guide to Phone Numbers in Belarus

Quick Reference

• Country: Belarus
• Country Code: +375
• International Prefix: 810
• National Prefix: 8

Overview

This guide offers a detailed exploration of the Belarusian telephone numbering plan. It includes the structure of phone numbers, dialing procedures, and essential technical details for telecom experts, developers, and system administrators. The information aligns with the E.164 international numbering plan standard, a global telecommunications benchmark.

Number Formats

General Structure

Belarus employs an open numbering plan, with a maximum total length of 12 digits for domestic dialing, including the national prefix. The basic structure includes:

• Country Code: +375
• National Prefix: 8
• Subscriber Number: Varies by type (geographic, mobile, special services)

Number Format Breakdown

Type	Format	Example
Geographic	+375 <Area Code> <Local Number>	+375 17 1234567
Mobile	+375 <Carrier Code> <Subscriber Number>	+375 29 1234567
Toll-Free	+375 800 <Subscriber Number>	+375 800 1234567
Premium Rate	+375 902 <Subscriber Number>	+375 902 1234567

Geographic (Landline) Numbers

• Area Codes: Typically 2 digits (e.g., 17 for Minsk)
• Subscriber Number: 7 digits
• Format: +375 <Area Code> <7-Digit Number>

Example: +375 17 1234567

Mobile Numbers

• Carrier Codes: 2 digits (e.g., 29, 33, 44)
• Subscriber Number: 7 digits
• Format: +375 <Carrier Code> <7-Digit Number>

Example: +375 29 1234567

Toll-Free Numbers

• Prefix: 800 or 803
• Subscriber Number: 7 digits
• Format: +375 800 <7-Digit Number>

Example: +375 800 1234567

Premium Rate Numbers

• Prefix: 902
• Subscriber Number: 7 digits
• Format: +375 902 <7-Digit Number>

Example: +375 902 1234567

Regular Expressions

For developers managing Belarusian phone numbers, the following regular expressions can validate different types:

• Geographic: ^\+375\s(1[5-7]|2[1-5])\s\d{7}$
• Mobile: ^\+375\s(29|33|44)\s\d{7}$
• Toll-Free: ^\+375\s800\s\d{7}$
• Premium Rate: ^\+375\s902\s\d{7}$

Dialing Procedures

Domestic Calls

• Landline to Landline: Dial 8, followed by the area code and the subscriber number.
  Example: 8 17 1234567
• Landline to Mobile: Dial 8, followed by the carrier code and the subscriber number.
  Example: 8 29 1234567
• Mobile to Mobile: Directly dial the 9-digit number starting with the carrier code.
  Example: 29 1234567

International Calls

• Outgoing: Dial 810 (international prefix), followed by the country code and the subscriber number.
  Example: 810 44 20 1234567 (calling the UK)
• Incoming: Callers from abroad should dial +375, followed by the area or carrier code and the subscriber number.
  Example: +375 29 1234567

Number Portability

Belarus supports mobile number portability (MNP), allowing subscribers to retain their mobile numbers when switching between carriers. This service is regulated by the Ministry of Communications and Informatization of the Republic of Belarus.

Major Telecom Operators and Number Ranges

Operator	Carrier Code	Service Type
Beltelecom	17	Landline
A1 (Velcom)	29	Mobile
MTS Belarus	33	Mobile
Life:)	44	Mobile

Number Allocation and Management

The Ministry of Communications and Informatization of the Republic of Belarus is responsible for the allocation and regulation of telephone numbers in Belarus. The numbering plan is managed in accordance with ITU-T Recommendation E.164.

Technical Restrictions and Special Cases

• Golden Numbers: Premium numbers, often referred to as "golden numbers," are available in Belarus and are typically sold at a premium rate by telecom operators.
• Number Blocking: Specific number ranges may be blocked for various reasons, including regulatory restrictions or to prevent fraud.

Technical Considerations for Developers

When implementing systems that interact with Belarusian phone numbers, consider the following:

1. Validation: Utilize the regular expressions provided to validate phone numbers.
2. Formatting: Ensure that international formats include the +375 country code.
3. Portability: Account for mobile number portability when designing systems that involve carrier identification.
4. Number Blocking: Implement checks for blocked or restricted numbers based on regulatory updates.