How to ask a phone number in Japanese

How to ask a phone number in Japanese
How to Ask for Someone’s Phone Number in Japanese

電話番号は何ですか?
でんわばんごうはなんですか?
What is your phone number?

123-4567です。
一二三の四五六七です。
いちにさんよんのごろくななです。
It’s 123-4567.

電話が鳴っているよ。
でんわがなっているよ。
The telephone [phone] is ringing! / Phone call!

電話を借りてもいいですか。
でんわをかりてもいいですか。
May I use your telephone?

もしもし
Moshimoshi
Hello (used only when answering the phone)

Notes:
の

の is a spoken hyphen (-) when saying a phone number in Japanese .

四 & 七

When using the telephone, 4 and 7 are pronounced よん and なな, not し and しち. While most would understand what you are saying if you used the On readings, it would be seen as odd by normal standards. You never use hundreds or double digit numbers to describe your phone number either. It’s simply 1-9 with a の particle separating the numbers and that is all that’s needed.

Vocabulary
電話 (でんわ) : telephone

番号 (ばんごう) : number (identifier / counter for trains, magazine issue number, etc)

何 (なん / なに) : what

Related Post:
Phrases for phone calls in Japanese
N5 Listening Practice – Unit 1