The BR International Frequency information Circular (BR IFIC) provides information on the frequency assignments/allotments submitted by administrations to the BR for updating the Master International Frequency Register and Plans.

The BR IFIC is published once every two weeks by the BR, pursuant to Article 20 (provisions Nos. 20.2 to 20.6 and 20.15) of the Radio Regulations in the official languages of ITU: Arabic, Chinese, English, French, Russian and Spanish.