QR

QRZ

QRZ is the largest worldwide amateur radio callsign database, listing licensed radio operators and their public station details.

12.2k usesUpdated Oct 28, 2026
Pseudonym
amateur radiocallsignham radiooperatorlicensee

About this module

QRZ.com is the amateur radio community's central directory, where licensed operators worldwide publish and look up callsign records that include the operator's name, location, and license information. It is widely used by radio amateurs to identify stations they contact and to maintain their own public profile.

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Rate limits

Pick the right plan for higher usage limits.

TierPer hourPer dayCooldownAction
Guest2 req/h3 req/day10sCurrent plan
Free10 req/h20 req/day5sSign up
Standard60 req/h200 req/day2sSee pricing
Pro100 req/h500 req/day2sSee pricing
Ultimate500 req/h2000 req/day0sSee pricing

Frequently Asked Questions

What impacts module results and how to interpret changes across executions.

Results depend on source platform availability, anti-automation controls, and temporary service limits. A valid target can still return partial or empty data when the upstream platform is rate-limited or unavailable.