Changes to 92/264/EEC: Council Decision of 11 May 1992 on the introduction of a standard international telephone access code in the Community
EU Decision 1992/264
The legislation that changes 92/264/EEC: Council Decision of 11 May 1992 on the introduction of a standard international telephone access code in the Community, newest first. Choose one to see each change.
From legislation.gov.uk's record of changes, the official one: see it there.