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Spare broadcast call signs

Available KZ call signs

359 of the 676 KZ four-letter combinations aren't held by any broadcast station. K calls go to stations west of the Mississippi River. Click any call to check it.

Spotted a call you want? Verify it before filing.

The call sign search the FCC offers covers broadcast stations only. Our free Call Sign Check adds shortwave stations and FCC ship licenses, flags a call that was recently released or is moving to a new owner, and gives the rule behind each result.

KZ call signs at a glance

Of the 676 four-letter KZ combinations, 317 belong to broadcast stations and 359 are spare.

Those 317 calls are used by 324 stations (a call can be shared across services, like KXXX and KXXX-FM):

  • FM: 211
  • LPFM: 47
  • AM: 41
  • Low power TV: 18
  • Full-power TV: 4
  • Class A TV: 3

KZ stations on the air include KZAH (FM, Harper, TX), KZDY (FM, Cawker City, KS), KZJH (FM, Jackson, WY), KZMY (FM, Bozeman, MT), KZRG (AM, Joplin, MO), KZUU (FM, Pullman, WA).

The latest KZ call sign change: KAJM-FM became KZNY on June 17, 2026.

Among the spare ones: 1 released in the last 60 days, 1 used by a ship or shortwave station, 2 old ship calls whose license lapsed. Run any of them through Call Sign Check before you file.

Just released

KZLB

All spare KZ call signs

Just released Used by a ship or shortwave station: check before you file Old ship call (license lapsed)

KZAB KZAC KZAD KZAE KZAF KZAG KZAJ KZAQ KZAU KZAV KZAW KZAY KZBA KZBC KZBF KZBJ KZBM KZBO KZBP KZBU KZBW KZCA KZCB KZCG KZCI KZCJ KZCM KZCN KZCP KZCQ KZCU KZCX KZCY KZDA KZDD KZDE KZDH KZDI KZDJ KZDK KZDL KZDM KZDO KZDP KZDQ KZDR KZDS KZDT KZDU KZDW KZDZ KZEA KZEC KZED KZEF KZEH KZEI KZEJ KZEK KZEM KZEO KZEU KZEV KZEX KZEY KZFA KZFB KZFD KZFE KZFF KZFG KZFH KZFI KZFJ KZFK KZFL KZFO KZFP KZFQ KZFU KZFV KZFX KZFY KZFZ KZGA KZGB KZGE KZGG KZGH KZGJ KZGK KZGO KZGQ KZGS KZGT KZGV KZGW KZGX KZGY KZHA KZHB KZHF KZHG KZHH KZHI KZHJ KZHL KZHO KZHQ KZHS KZHU KZHV KZHW KZHX KZHY KZHZ KZIB KZIE KZIF KZIH KZIJ KZIK KZIL KZIR KZIT KZIU KZIV KZIW KZIX KZIY KZJA KZJC KZJD KZJE KZJF KZJG KZJI KZJN KZJP KZJQ KZJR KZJT KZJU KZJV KZJW KZJX KZJY KZKB KZKD KZKF KZKG KZKH KZKI KZKJ KZKK KZKM KZKN KZKO KZKP KZKQ KZKT KZKU KZKW KZLB KZLH KZLN KZLP KZLR KZLU KZMB KZMD KZME KZMF KZMH KZMJ KZMR KZMS KZMW KZNF KZNH KZNI KZNJ KZNL KZNU KZNV KZOB KZOD KZOE KZOF KZOG KZOH KZOJ KZOL KZOP KZOS KZOU KZOV KZOX KZPB KZPC KZPD KZPE KZPF KZPG KZPH KZPI KZPJ KZPM KZPN KZPO KZPP KZPQ KZPU KZPV KZPW KZPX KZPY KZPZ KZQC KZQE KZQF KZQG KZQH KZQI KZQJ KZQK KZQM KZQN KZQO KZQP KZQR KZQS KZQT KZQU KZQV KZQW KZQY KZQZ KZRA KZRB KZRE KZRH KZRI KZRL KZRM KZRQ KZRU KZRY KZSA KZSH KZSI KZSK KZSL KZSO KZSP KZSS KZSV KZSY KZTD KZTE KZTF KZTG KZTJ KZTQ KZTT KZTY KZTZ KZUB KZUD KZUF KZUG KZUI KZUJ KZUK KZUO KZUQ KZUR KZUV KZUX KZUY KZVA KZVB KZVC KZVD KZVE KZVF KZVG KZVH KZVI KZVJ KZVK KZVL KZVM KZVN KZVO KZVP KZVQ KZVR KZVS KZVT KZVV KZVW KZVX KZVY KZVZ KZWE KZWG KZWH KZWI KZWJ KZWK KZWM KZWN KZWO KZWP KZWQ KZWR KZWT KZWU KZWW KZWX KZWZ KZXA KZXB KZXC KZXD KZXE KZXF KZXG KZXH KZXI KZXJ KZXM KZXN KZXP KZXS KZXU KZXV KZXW KZXX KZXZ KZYA KZYB KZYC KZYD KZYE KZYF KZYG KZYH KZYI KZYJ KZYL KZYO KZYT KZYU KZYV KZZD KZZF KZZV

← KY call signs All prefixes WA call signs →

Spare call signs by prefix

K call letters: west of the Mississippi River

W call letters: east of the Mississippi River

Spotted a call you want? Verify it before filing.

The call sign search the FCC offers covers broadcast stations only. Our free Call Sign Check adds shortwave stations and FCC ship licenses, flags a call that was recently released or is moving to a new owner, and gives the rule behind each result.

Current to October 16, 2026, drawn from FCC records for stations, ships and shortwave, with a fresh update each morning. Not an FCC product.