Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym DUN is...

DUN is

Dial Up Networking
Dial-Up Network

More Meanings For DUN:

Dial-Up Networking
Dispatch Unit Number
Digital User Networking
Dial-Up Networking
Dial Up Networking
Dial-Up Network
Dial-Up Networking
Dial-Up Networking
Dundas, Greenland

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