First, the federal district courts are not designated by number, they are designated by name (e.g. U.S. District Court for the District of Colorado). Every district court is located in just one state. For appeals purposes, the states are grouped together and covered by a particular Circuit Court of Appeals, most of which are designated by number (the exception being the U.S. Court of Appeals for the Federal Circuit). For example, appeals from federal district courts in Colorado, Utah, Oklahoma, Wyoming, Kansas, and New Mexico go to the U.S. Court of Appeals for the Tenth Circuit.
Second, federal district court subpoenas have national jurisdiction. See FRCP 45(b)(2). So the company receiving the subpoena may not refuse to comply with the subpoena simply because the federal district court that issued the subpoena is not in the same state or the same circuit as the company. Of course the subpoena must be properly served on the company and, when seeking documents, you must provide that the place where the company is to provide the documents must be within 100 miles of where the company is located. FRCP 45(c)(2)(A). The company may, of course, move to quash the subpoena if it seeks privileged information, is unduly burdensome, requires that the documents be provided to a place more than 100 miles from where it is located, or improperly served, among other things.
Again, please keep all your questions on the federal case to one thread. Don't open a new thread for each question.
Finally, I suggest you get a lawyer to help you with your case. You do not seem to know the rules very well, and that's going to hurt you in litigating this case.