QRZ Callsign Lookup: Profile, Logbook and XML Explained

Almost every radio amateur has typed a stranger’s call sign into a web page at some point to see who is on the other end of a contact. For many hams that page is QRZ.com. A QRZ callsign lookup shows the name, location, licence details and, if the operator has filled it in, a photograph, a biography and the best way to exchange a QSL card. This guide explains what QRZ is, how its database works, how to build a profile that helps your contacts, how logging programs use the XML data service and what to think about before you publish personal details.

Whether you use QRZ daily or have only ever opened it by accident, a few minutes of setup makes your station easier to confirm and your own logging faster.

What QRZ Is and Where It Came From

QRZ was founded in 1992 by Fred Lloyd, AA7BQ, as a spinoff of what was once called the Callsign Project. The Callsign Project was a cooperative effort that began on an internet newsgroup, with the goal of obtaining and distributing the callsign database tapes published by the US regulator. In those early days the database was shared on magnetic tape, and later on CD-ROM, before the web made lookups instant. Today QRZ is a large website with a callsign database, user pages, forums, awards, a swap meet and online logging.

The lesson from its origin is useful. The core of the system is a callsign database built largely from official licence data, which is then extended by the operators themselves. The official data gives you a name and an address in countries where the regulator publishes them. The operator-supplied data gives you the part that really helps on the air: a photograph, a note about QSL preferences and the operating style.

What a Callsign Lookup Shows

When you look up a call sign, QRZ returns a listing. The contents vary by country and by how much the operator has completed. A typical listing may include:

• Name and location where the licensing authority makes them public, or what the operator chose to publish.
• Licence information such as class and expiry, in countries where that is part of the official record.
• Grid square and coordinates if the operator has added them.
• A biography page with a photograph, station description, antennas and interests.
• QSL information, including the preferred method, the bureau or direct address and electronic confirmation options.
• Awards and links to other pages or logs.

If you are working a pileup and want to know whether a DX station accepts the bureau, a lookup is the quickest way to find out. Our explainer on the QSL bureau system shows what to do once you know, and our overview of LoTW, eQSL and paper confirmations compares the options.

Accounts, Rules and Free vs Paid

A basic QRZ account is available at no charge. The registration process is automated: you choose a user name, a password and supply a valid email address, and the system sends login instructions. A few simple rules apply, as set out in QRZ’s own help pages.

• One account per person and one account per email address.
• Registrants must be individuals, not clubs.
• A call sign user name is required for database access.
• A single user account can administer many call signs, which is helpful for club stations and DXpeditions.

QRZ also sells subscriptions. According to the QRZ subscriptions page, all paid subscription levels include unlimited daily callsign lookups, and they add features such as a contact log on your page where visitors can leave messages. The XML Logbook Data subscription gives logging programs direct access to QRZ’s data port. A higher level bundles the XML access with options to suppress advertising and to download databases. Prices change, so check the subscriptions page for the current figures instead of relying on any article.

The table reflects what the QRZ pages describe. Because plans change, treat it as a guide to the structure, not a final price list.

Building a Profile That Helps

A listing with only a name and a town tells your contacts very little. A few additions turn it into a tool that makes every QSO smoother. After logging in, pull up your own call sign and look for the link that says to update the listing. You will be asked to confirm your password again as a security precaution.

Add a clear photograph

A photo of the operator or the station makes a contact feel more personal. If you prefer privacy, a picture of the antenna or the shack is just as good.

Write a short, specific biography

Describe your station in a few lines: radio, power, antennas and the bands you favour. Mention your interests, such as contesting, DXing, satellites or portable operation. QRZ allows a wide range of content on biography pages, with the main restriction that material be wholesome and suitable for general viewing. Commercial mentions are permitted, and the bio area is not treated as advertising space.

State your QSL policy

This is the single most useful item for the people who work you. Say whether you use the bureau, accept direct cards, upload to Logbook of the World, confirm via eQSL or use several methods. If you want cards direct, give the address and any requirements, such as return postage. If you do not send cards at all, say so.

Add location data

A grid square helps contest and VHF operators, and it saves them a lookup. Our article on grid squares and the Maidenhead system explains how to find yours.

Keep it current

Update the listing when you move, change your antennas or change your QSL method. A stale listing is worse than a sparse one, because people act on what it says.

Privacy: What to Publish

A callsign database is public by nature, and the official data you cannot control may already include a home address. QRZ gives you some control over what you add on top. Two points are worth knowing.

• The email address on your listing is separate. The email address shown in the callsign database is stored apart from the address you used to register your account. This lets you keep your private email out of the public listing and show a different one, or none.
• You decide what extra to publish. The biography, photographs and location details are optional. Consider whether you want a street-level location or only a grid square, and whether a photo of the house is wise.

Rules about what the official data contains differ widely between countries. Some regulators publish full addresses, some publish only a town and some publish nothing. Check what is public about your own call sign, and use the options QRZ provides to manage the rest.

The XML Data Service and Your Logging Program

When a logging program looks up a call sign for you as you type it, it often uses the QRZ XML data service. As QRZ describes it on the XML data service page, the service is a high-performance back-end connection to the QRZ database, supported by most of the major logging and contest programs. With it, your logger automatically fetches name, address and QSL information, so you do not have to type them.

QRZ lists a number of programs that use the service, including Ham Radio Deluxe, DXLab, MacLoggerDX, CQRLog, the N3FJP Amateur Contact Log and several others. The service is available to paying subscribers, and QRZ publishes an interface specification for developers who want to add fast lookups to their own software. Subscribers can also use a test page to check that their XML account works.

Two practical notes from QRZ’s documentation are worth repeating:

• Special characters in passwords. Some logging applications do not correctly encode special characters when sending a password to the server. If lookups fail in one program but work on the website, try a password without characters such as question marks, at signs or ampersands.
• Use your account, not someone else’s. The XML credentials belong to the subscriber, so do not share them with other operators.

If you use Log4OM or DXLab, the lookup settings are in the program’s configuration. Our setup guides for Log4OM and the DXLab Suite show where those fields live.

QRZ and Your Own Log

QRZ also offers an online logbook, and many operators use it as a backup or as a way to share logs with their contacts. The details of features and limits change, so read QRZ’s own help pages before you rely on them. If you plan to move logs between QRZ and a desktop program, you will work with the ADIF format, which is the standard way to exchange logs between programs. Our article on ADIF and moving your log between programs explains how that works.

Whatever else you do, keep a local copy of your log. An online service is convenient, but it is not a substitute for your own backup.

Using Lookups on the Air

A lookup earns its keep when you use it at the right moment. Some habits that work well:

• Check the QSL method before you send a card. It saves postage and avoids a card that cannot be delivered.
• Verify an unusual call sign. If you are not sure that you copied it correctly, the database shows whether the call exists and where it is.
• Use the grid square. If you are chasing a VHF grid or a contest multiplier, the listing often gives it directly.
• Say hello with a name. A name from the listing makes a ragchew friendlier, but confirm it by ear.

Remember that lookups are a convenience, not a proof. A listing can be out of date, and operating portable or from another country changes the location. If a contact says something different from the database, believe the contact.

Other Databases and Lookup Sources

QRZ is not the only place to look up a call sign. Many countries have an official national database, maintained by the regulator or the national society, and the quality of those records varies. Your logging program may also be able to query more than one source in turn, falling back to a second database if the first has no record. If a call sign does not appear on QRZ, that does not mean it is invalid. The operator may simply have no extended listing, or the call may be new, recently changed or from a country where the regulator does not publish data.

It is also worth remembering that a call sign lookup is only as good as the data behind it. Callsign databases can lag behind real life, and some operators use a different location from the one on their licence when they travel. If a station tells you something different from the listing, trust the station and, if it matters for a confirmation, ask which address or method to use.

Common Mistakes

• Leaving the QSL policy blank. People will guess, and some will send cards you do not want.
• Using the same password everywhere. Use a unique password for your QRZ account, because it holds your personal details.
• Trusting a listing blindly. Databases lag behind reality.
• Posting a private email on the public listing. Use the separate listing address if you want to keep your main address private.
• Forgetting a local backup. Export your log regularly.

The Bottom Line

A QRZ callsign lookup is one of the most useful small tools in amateur radio. Spend a few minutes on your own listing with a clear photo, a short biography, your QSL policy and your grid square, and every contact becomes easier. Decide deliberately what personal information you publish, understand what the paid XML service does for your logging program and keep your own copy of your log. Used that way, QRZ saves time at the radio and makes it easier for the people you work to confirm the contact.

Frequently Asked Questions

Is a QRZ account free?

A basic account is available at no charge, and registration is automated. QRZ also sells paid subscriptions with extra features, including unlimited daily lookups and XML data for logging programs.

What does the QRZ XML service do?

It gives logging programs direct access to the QRZ database, so the program can fill in name, address and QSL information automatically when you enter a call sign. It is a paid subscription service.

Can I manage several call signs with one QRZ account?

Yes. A single user account can administer many call signs, so you do not need a second account for a club or a special event station.

How do I update my QRZ listing?

Log in, pull up your call sign and use the link to update the listing. You will be asked for your password again as a security step.

Does my private email address appear on my listing?

Not necessarily. The email address shown in the callsign database is set separately from your account email, so you can show a different one or choose what to display.

Which logging programs use QRZ lookups?

QRZ lists many, including Ham Radio Deluxe, DXLab, MacLoggerDX, CQRLog and the N3FJP Amateur Contact Log. Most major logging and contest programs support the XML service.