Phone numbers for use in TV shows, films and creative works

Accordingly for a movie that showed aspects of phone phreaking techniques and culture, Hackers (1995) mentions at least three 555 numbers:

212-555-4240: The number of the modem at OTV that Dade social-engineers out of the security flunkie, allowing him to dial into the cable channel's systems

555-4817: Lisa Blair's phone number, which Lord Nikon recalls out of his photographic memory at the party.

555-4202: Kate's number, which Phreak connects to by rapidly pressing the prison phone's switchhook ten times (effectively pulse-dialing 0) and then asking the operator for help dialing

Given how stylized the movie is as a whole, the prominence of several obviously-fake phone numbers is the least of the things that break realism.

>rapidly pressing the prison phone's switchhook ten times (effectively pulse-dialing 0)

Eleven times; 1 was two clicks.

GP is correct. 1 has 1 click (at least in US where I grew up).

There are a few variations listed below, but none seem to use “extra” clicks.

https://en.wikipedia.org/wiki/Pulse_dialing

Swede here, the article even mentions Sweden as an exception having an extra click.