Pursuant to the new definition "a subscriber is considered active if the subscribers' activity resulted in income to the Company during the most recent three months". Such activity includes all incoming and outgoing calls, all subscriber fee accruals, debits related to service, outgoing SMS and MMS, and data transmission and receipt sessions. Such activity does not include incoming SMS and MMS sent by the Company, as well as abandoned calls.

As of March 31, 2005 the number of active Beeline subscribers* according to the new definition was 88% of the total subscriber base which consisted of more than 30.7 million users**.

Introduction of the "Active Subscriber" definition will provide shareholders, investors and others with an additional criterion for analysis of the Company's subscriber base which meets international industry standards. In developing the definition, VimpelCom took into account the practices of major international cellular operators such as Vodafone, Orange and T-mobile. As a result, the active subscriber definition used by Vodafone was used as the basis for the Company's definition.

Introduction of the "Active Subscriber" definition does not change the Company's total subscriber base accounting policy.

Additional Information:

*Statistical data on active subscriber base of VimpelCom Group (% of total Beeline users)

Active base As of March 31, 2005
- Moscow and the Moscow Region 84%
- Other regions 89%
- Kazakhstan 93%
Total 88%

**Statistical data on total Beeline subscribers Active base As of March 31, 2005
- Moscow and the Moscow Region 8,117,971
- Other regions 21,499,725
Kazakhstan 1,130,722
Total 30,748,418

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