What does 局番 mean?
局番 is a Japanese noun meaning “telephone exchange number” in English. It is written as 局番 in kanji, きょくばん in hiragana, and kyokuban in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
私の自宅の電話番号は市外局番が２０１で１２３ー４５６７番です。
My home phone number is, area code two-oh-one, one-two-three, four-five-six-seven.