All operators are required to offer their customers free blocks against Premium rate services. The blocks should be available for both premium calls and premium SMS, and can be used for both fixed and mobile phone numbers.
For more information about blocks against Premium rate services and other blocking services that operators are required to provide, please visit the website of the Swedish Post and Telecom Agency (PTS).
To put a block on your phone number, contact your operator. Please note that some operators may have different blocks for premium calls versus premium SMS.