It was assigned by the ITU following an agreement between the authorities of Kosovo and Serbia in an EU-led dialogue.

[1] Its dialing code was initially expected to become effective on 1 January 2015, but it was postponed to the finalization of the agreement in late August 2015.

[2] With the agreement of the Administration of the Republic of Serbia, the Director of TSB has assigned the international codes to Kosovo.

[4] The EU has handed over [clarification needed] the temporary authorisation for mobile and the licence for fixed telephony services to be undertaken in Kosovo issued by the Kosovo Telecommunication Regulatory Authority to MTS d.o.o[5] Following the breakup of the SFR Yugoslavia in 1992, which had +38 as country code, Kosovo used the code +381, which was granted to FR Yugoslavia and later used by Serbia.

[8] Vice chairman of Kosovo's Vetëvendosje party, Shpend Ahmeti claimed that the agreement favored Serbia.