Look up any US amateur radio call-sign. Results come from W5ZQ's own copy of the FCC license database, updated from the FCC's daily files.
Tip: use * as a wildcard — W*ZQ or WB*ZDC lists every matching call-sign on record, back to the earliest callbooks.
A complete copy of the FCC database is utilized for predictions of pending applications, short call-sign availability by region, and full application history.