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

AC1O

Active

PIRIS, ADRIAN

Location: SPRINGFIELD, MA
Class: Amateur Extra
Granted: 2022-07-26
Expires: 2032-07-26
Previous call: K1APD
FRN: 0031421746

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

Vanity availability

Held

Currently held

AC1O 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

K1APDcancelled· G
Clevenger, BrianOKgranted 2025-01-03cancelled 2026-05-12
KJ5JHRcancelled· G
Clevenger, BrianOKgranted 2024-12-14cancelled 2025-01-03

Prior holders later became

KN4Tactive· E
DEEMER, WALTER RFLgranted 2026-08-21

License history

0 events

No recorded events.

More vanity slots coming available

From Massachusetts

All →

K1AFR 2026-09-10
KC1SDV 2026-09-10
W1RLJ 2026-09-10
KB1ITH 2026-09-12
KB1YQO 2026-09-13

Starting with AC1

All →

AC1SL MA · 2026-09-27
AC1SX TX · 2026-10-15
AC1G TX · 2026-11-08
AC1TB MA · 2026-12-03
AC1TF TX · 2026-12-17

Full history → Vanity availability → Callsign genealogy →