Was shot in 35 days.
The character of Virgil C Dunn would appear to be a reference to the Latin poet Virgil, specifically in Dante's Divine Comedy it was Virgil who was the guide the Hell and Purgatory, as a non-Christian he was unable to enter Heaven.
Job 13:17 (used to encode the phone number): "Hear diligently my speech, and my declaration with your ears."
The phone number encoded using Job 13:17 is 436-726-3993 uses the apparently unused area code 436. It also uses 726 for the exchange code, rather than the 555 usually used in most movies fictional works.
David Hewlett appeared in Vincenzo Natali's Cube (1997).