About SpectrumLookup

SpectrumLookup is a fast, independent mirror of the FCC's Universal Licensing System (ULS) license search. It is built from the FCC's public ULS bulk data files: a full reload from the weekly files, kept current with the FCC's daily update files. You can search by call sign, licensee, or site, county and frequency, and results come back in a fraction of a second. SpectrumLookup is operated by Tyron Calta.

What's included

These FCC license services are included today (more are planned):

• Amateur – 1,696,772 licenses (HA, HV)
• Private Land Mobile – 860,337 licenses (GB, GE, GF, GI, GJ, GO, GP, GU, IG, IQ, PA, PB, PW, QM, QQ, RS, SG, SL, SP, SY, YB, YE, YF, YG, YI, YJ, YO, YP, YU, YW)
• Commercial Land Mobile – 81,075 licenses (GM, GR, GS, GX, IK, LN, LW, NC, QD, QO, QT, YK, YM, YS, YX)
• Broadcast Auxiliary – 21,570 licenses (LP, LV, RP)
• Paging – 9,604 licenses (CA, CB, CD, CG, CO, CR)
• Coast & Ground – 35,843 licenses (AA, AF, AR, MA, MC, MK, MR)
• Commercial Operator – 792,228 licenses (CM, RR)

See covered radio services for the full list of service codes.

How fresh is the data?

The data is current as of Sep 27, 2026. It is updated automatically every day from the FCC's daily files, usually the morning after the FCC publishes them. Machine-readable status: /status.

Not affiliated with the FCC

SpectrumLookup is not affiliated with, endorsed by, or operated by the Federal Communications Commission. The data may be incomplete, delayed or wrong; for any official or legal purpose, verify it with the FCC's own ULS license search. See also our Terms of Use and Privacy Policy.

Contact

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