What is the answer to "Telephone no. add-ons" in the NYT Crossword?

The answer to the NYT Crossword clue "Telephone no. add-ons" is EXTS (4 letters).

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NYT

Telephone no. add-ons NYT Crossword Clue

Down clue · from the June 5, 2025 puzzle

Stuck on “Telephone no. add-ons” from the New York Times Crossword? Here is the verified answer:

Answer

EXTS

4 letters · Down · last seen June 5, 2025