Confidence: Medium · Source: FCC ULS · As of 2026-09-09

KP4FOX

Active

Ruiz, Enrique

Location: San Juan, PR
Class: Technician
Granted: 2020-11-04
Expires: 2031-01-19
Previous call: WP4OFX
FRN: 0020128245

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Vanity availability

Held

Currently held

KP4FOX is held by an active license; it isn't a vanity slot right now.

Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).

Callsign genealogy

Full chain →

Previously held by current licensee

WP4OFXcancelled· T
Ruiz, EnriquePRgranted 2010-08-27cancelled 2011-01-19
KB1URWcancelled· T
Ruiz, EnriquePRgranted 2010-08-27cancelled 2010-08-28

License history

0 events

No recorded events.

More vanity slots coming available

From Puerto Rico

All →

WP4TLD 2026-09-10
K5DTC 2026-09-14
WP4LKC 2026-09-14
KP4ECD 2026-09-16
WP3TU 2026-09-16

Starting with KP4

All →

KP4ECD PR · 2026-09-16
KP4ED PR · 2026-10-05
KP4CH IN · 2026-10-11
KP4DEU PR · 2026-10-12
KP4GN PR · 2026-11-02

Full history → Vanity availability → Callsign genealogy →