*67

1. CanadaUScommunicationsThe telephone number used to block caller ID.

   A *67 blocked call is reported to the receiving party's caller ID as a "private call".

   2013, Steven Kerry Brown, The Complete Idiot's Guide to Private Investigating, 3 edition

   2 more examples

   Free caller ID blocking. […] The new feature will enable customers to hide their identification from […] caller ID by punching "*67" on push-button phones or dialing "1167" on rotary phones.

   1990 September 17, “Briefs”, in Network World

   Callers can block their Caller ID information on a per-call basis by dialling *67 before a call is made.

   2010, House of Representatives, Truth in Caller ID Act of 2010

present singular third person *67s · participle present *67ing · participle past *67ed · past *67ed

1. CanadaUSintransitivetransitivecommunicationsTo use the telephone number prefix to block caller ID.

   [H]ow about *67ing him? That's what [she] does when she likes someone.

   2010, Robin Palmer, Yours Truly, Lucy B. Parker

   2 more examples

   I seem to recall that a Rochecter Tel sub called the 800-stopper ANI #, and got readback, then "*67"ed, and called again - this time NOT getting one.

   1993 September 20, David Lesher, “Caller ID/ANI Thread”, in comp.society.privacy (Usenet)

   [The NSA has] this dude who […] writes down all the numbers that pop up on the caller-id display. Don't forget to *67!!!

   1994 March, Hackle-b3rry phin, “Keeping a low profile on UNIX systems”, in Brotherhood of Warez, volume 3