CNN's Tucker Carlson says he became the target of angry and threatening phone calls Thursday night, after someone at rival Fox News allegedly posted his home telephone number on the cable news operation's Web site.

Carlson, who hosts CNN's "Crossfire," said on Friday that earlier in the week he jokingly announced what he claimed was his telephone number during an episode of his show, which he co-hosts with Democratic strategists Paul Begala and James Carville, along with conservative columnist Robert Novak. In fact, the number Carlson gave out connected callers to a switchboard at Fox News.

According to Carlson, an unknown person or persons at Fox retaliated by posting Carlson's actual home telephone number on the Fox Web site. Carlson said hundreds of angry phone calls were made to his home, including threatening calls. Carlson's wife and four young children were at home at the time the calls were made.

Carlson and Carville on Friday excoriated Fox for the reverse prank, which Carville said "scared young children to death," unnecessarily.

Fox News Channel is based in New York. CNN is based in Atlanta.