noun
contact information; inquiry point
Used for a phone number, email address, or department where one can make inquiries, especially in business or official contexts.
お問い合わせ先は、こちらの電話番号までお願いします。
For inquiries, please use this phone number.
製品についての問い合わせ先をウェブサイトに掲載した。
We posted the contact information for product inquiries on our website.
noun
reference; person to ask
Refers to a person who can provide information or a recommendation, such as a personal reference on a job application.
履歴書に問い合わせ先として前の上司の名前を書いた。
I listed my former boss as a reference on my resume.
連絡先 is a general contact address or number, while 問い合わせ先 specifically refers to a point of contact for inquiries.
Compound of 問い合わせ (inquiry) + 先 (destination, point).