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この電話の番号は正しいですか?
Is this phone number correct?
A sequence of digits used to identify a telephone line or device.
彼の電話の番号を教えてください。
Please tell me his phone number.
電話の番号を間違えてしまいました。
I got the phone number wrong.
This is the standard way to refer to a phone number in Japanese. It can be used for landlines, mobile phones, or other telecommunication devices.
Be careful not to confuse 電話の番号 with 住所 (address) or メールアドレス (email address).
When asking for someone's phone number, it's polite to say '電話番号をお聞かせください' (denwa bangō o okikase kudasai) instead of just '電話番号を教えてください'.
電話 (denwa) means 'telephone' and 番号 (bangō) means 'number'. The phrase combines these two words to refer specifically to a phone number.
In formal contexts, you might hear 番号 (bangō) alone, but in everyday conversation, 電話の番号 is more common. The phrase is neutral and can be used in both formal and informal settings.