noun
phone number, contact number
B1
Rufnummer (feminine) means 'phone number' or 'contact number'. Used in telephony: to give or register a number. Plural is Rufnummern and declension regular. Common collocations: 'unter der Rufnummer erreichbar sein' (reachable at the number) and 'Rufnummer angeben' (to provide a number).
Examples
Bitte geben Sie Ihre Rufnummer an.
Please provide your phone number.
Der Kunde nannte die Rufnummer, damit der Support die Bestellung verfolgen konnte.
The customer provided the phone number so that support could track the order.
Unter welcher Rufnummer kann ich Sie erreichen?
At what phone number can I reach you?
Details
Mnemonics
Picture a phone screen with a number labeled 'Rufnummer'.
Rufnummer — 'ruf' sounds like 'roof' but think 'ruf' = 'call' (German 'rufen' = to call).
die = imagine a feminine contact card labeled 'die Rufnummer'.
Notes
Rufnummer is a formal word for a telephone number; commonly used in official forms and profiles.