uls-tracker Sign in

Confidence: Medium · Source: FCC ULS · As of 2026-09-10

WP4TZZ

Cancelled

Los Radio Heads

Location: San Juan, PR
Granted: 2026-06-11
Expires: 2036-06-11
FRN: 0038516373

Sign in to watch

Get notified about status changes and vanity availability for this callsign.

Vanity availability

693d

Available on 2028-08-03

WP4TZZ cancelled on 2026-08-04. Hold ends in 693 days.

Last held by Los Radio Heads (PR).

Confidence: High

Cancelled licenses begin the 2-year hold immediately on the cancellation date, so this is the firm release date per §97.19.

Callsign genealogy

Prior holders later became

NP4IIactive
Los Radio HeadsPRgranted 2026-08-04

License history

0 events

No recorded events.

More vanity slots coming available

From Puerto Rico

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

Starting with WP4

WP4TLD PR · 2026-09-10
WP4LKC PR · 2026-09-14
WP4MRN UT · 2026-09-17
WP4TKL PR · 2026-09-17
WP4KNF PR · 2026-09-18

Full history → Vanity availability → Callsign genealogy →