Crossword clues for No. with an ext. 3 lettersAnswerClueEXTNo. on a phoneEXTDept. phone numberEXTPhone no. additionEXTPhone abbr.EXTBus. card datumEXTTelephone no. add-onEXTNo. you may dial at any timeEXTPhone line abbr.EXTTel. add-onEXTPhone number addition (abbr.)EXTNos. punched during a phone tree callEXTTel. no. adjunctEXTAddnl. ph.EXTNo. that you can dial at any time during a voice menuEXTPhone no. dialed "at any time"EXTPhone msg. detailEXTOutside (abbr.)EXTPart of an office phone no.EXTNo. after 10 nos.EXTSwitchboard abbr.EXTAddnl. phoneEXTOffice phone add-onEXTNumber on a line: Abbr.EXTTel. no. add-onEXTNo. at a 27-DownEXTNo. in many "sig blocks"EXTNo. in a "sig block"EXTYou don't have to dial one when calling a cell phone: Abbr.EXTNo. after a 10 digit numberEXTOpposite of int.EXTAdd'l phoneEXTAdded telephone line (abbr.)EXTNo. after a phone no.EXTPhone no. followerEXTBus. phone number addendumEXTPart of a business phone no.EXTOffice no.EXTTelephone no.EXTBus. phone no., perhapsEXTBusiness phone no. add-onEXTNo. after a telephone no.EXTBusiness card abbr.EXTAbbr. after a telephone numberEXTBus. line abbr.EXTAbbr. often found between two numbersEXTBusiness card no.EXTNo. after a tel. no.EXTTel. no. additionEXTCowboy's nicknameEXTPhone menu no.