Good luck with that one...

Try this one: http://www.faa.gov/ats/aat/ifim/GPF/GPFapttc.html

There is a central number (800)621-3136; however, that's not much of a
help since you are strongly advised to call the officer of the port of
entry where you're planning to land. Here's another central number
that has worked for me in the past to get a local customs number
(407)975-1740. Every time I go to the US I have to go to five or so
numbers until I finally get one that works. Often a good idea is to
call the FBO on the field and ask them for the customs number. Call
ahead at least one workday (9-5) ahead to make sure that the number
works.

Gerd

john smith wrote:
http://www.cbp.gov/xp/cgov/toolbox/ports/

Doug wrote:
I'm going up Colorado, Roberval Quebec, and back to Colorado. I have
the phone number for a central Canadian Customs, but don't have a
central US Customs phone number. Does anyone know what it is? I realize
I call Canadian Flight Service and file a Canadian Flight plan into a
US airport that has Customs. But do I need the phone number of each
specific US Customs Office? Surely there must be a central number?
Thanks,
Doug