"This is Al. I was calling 503-555-5753," he said. This was partly an assumption, and partly a number he pulled out of thin air; certainly the special DMV office set up to take law enforcement calls would be in the same area code as the number given out for the public to call, and it was almost as certain that the next three digits, the prefix, would be the same, as well. All he really needed to find out was the last four.