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

AB1ZK

Active

HILDEBRANT, MARC S

Location: WEST DENNIS, MA
Class: Amateur Extra
Granted: 2017-04-12
Expires: 2027-07-09
Previous call: AC0YC
FRN: 0008103038

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Vanity availability

Held

Currently held

AB1ZK 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

AC0YCcancelled· E
HILDEBRANT, MARC SMAgranted 2007-04-17cancelled 2016-04-26
KG0SBactive· E
Breznai, Stephen JOHgranted 2026-03-03
AD8PRcancelled· E
Breznai, Stephen JOHgranted 2025-08-15cancelled 2026-03-03

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 AB1

All →

AB1OV ME · 2027-01-17
AB1SW KY · 2027-01-29
AB1SY MN · 2027-01-29
AB1SZ MN · 2027-01-29
AB1SQ MA · 2027-01-31

Full history → Vanity availability → Callsign genealogy →