Very interesting interview of an Hollywood consultant (and former FBI
agent) about the facts in the movie 'Untraceable'. Among the many
technical details, I note:
Q: Any other elements in the movie the naysayers may call you and
the writers out on as being technically inaccurate?
A: The IP addresses in the movie are not real, for obvious
reasons. You can't use real IP addresses, because it will point to
real IP addresses. It's similar to the 555 area code for phone
numbers in movies.
Does the movie uses RFC 3330's 192.0.2.0/24? 
http://www.networkworld.com/news/2008/011808-hilbert-q-a.html