rirtracker

ASN

AS273

This network elsewhere: its routes on BGP Report

Now

ARIN statistics
Assigned (dated 1989-03-03) (US), in the latest file
Registry
ARIN
Holder
United States Department of Defense (DoD) USDDD
From
RDAP, looked up 2026-11-08 18:21 UTC

Latest change

Not in ARIN-Issued Removed (return, revocation or reclamation not publicly distinguishable)

Reported
2009-06-01 (ARIN)
Confidence
Strong inference
Inventory
Possible future reissue candidate after hold

Timeline (1)

Every change the tracker has found, newest first. It covers ARIN from 2008-12-01, the RIPE NCC from 2010-04-23, APNIC from 2008-02-15, LACNIC from 2012-06-29 and AFRINIC from 2012-10-03.

2009-06-01 ARIN Not in ARIN-Issued Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2009-12-01. Possible reissue candidate after this date; not confirmed available.

Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 1989-03-03) on 2009-05-31 and not issued on 2009-06-02. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the estimated hold end is 2009-12-01. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS273 allocated on 2009-06-01, not listed on 2009-06-02 source · retrieved
  2. Before ARIN delegated statistics 2009-05-31, before the report: allocated (dated 1989-03-03) source · retrieved
  3. After ARIN delegated statistics 2009-06-02, after the report: not issued source · retrieved
Classification history for this change (4 versions)
  1. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
  2. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
  3. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
  4. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current

Transfer records

No transfer log has a transfer of any part of this ASN.

RDAP lookups

Looked upWhyRegistryHandleOrganizationStatusLast changed
Watch list ARINAS273United States Department of Defense (DoD) USDDDactive2025-09-12
Watch list ARINAS273United States Department of Defense (DoD) USDDDactive2025-09-12
Watch list ARINAS273United States Department of Defense (DoD) USDDDactive2025-09-12
Watch list ARINAS273United States Department of Defense (DoD) USDDDactive2025-09-12
Watch list ARINAS273United States Department of Defense (DoD) USDDDactive2025-09-12
Watch list ARINAS273United States Department of Defense (DoD) USDDDactive2025-09-12
Watch list ARINAS273United States Department of Defense (DoD) USDDDactive2025-09-12

Organization-level details only; contact details are never kept. RDAP shows the registration when it was looked up, not in the past.

This page as data: asn/273.json