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.
2026-10-28ARINTransfer logMerger/acquisition or reorganizationConfirmed
Transfer log
Merger/acquisition: WorkForce Software LLC (ARIN) to Automatic Data Processing, Inc. (ARIN)
From
WorkForce Software LLC ARIN
To
Automatic Data Processing, Inc. ARIN
Inventory
No effect on ARIN applicant inventory
ARIN's transfer log records a merger, acquisition or reorganization from WorkForce Software LLC (ARIN) to Automatic Data Processing, Inc. (ARIN) on 2026-10-28 20:37 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.
Evidence (3) · classifier 1.4.0,
Transfer logTransfer log: MERGER_ACQUISITION on 2026-10-28 20:37 UTC, WorkForce Software LLC (ARIN) to Automatic Data Processing, Inc. (ARIN); resources moved: AS5740source · retrieved
BeforeARIN delegated statistics 2026-10-27 (produced 2026-10-27T13:00:21+00:00), before the report: assigned (dated 2010-03-01)source · retrieved
AfterARIN delegated statistics 2026-10-29 (produced 2026-10-29T13:00:22+00:00), after the report: assigned (dated 2010-03-01)source · retrieved
2009-02-26ARINNot in ARIN-IssuedRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2009-08-26. 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 2002-02-15) on 2009-02-25 and not issued on 2009-02-27. (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 2009-08-26. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsNot listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS5740 allocated on 2009-02-26, not listed on 2009-02-27source · retrieved
BeforeARIN delegated statistics 2009-02-25, before the report: allocated (dated 2002-02-15)source · retrieved
AfterARIN delegated statistics 2009-02-27, after the report: not issuedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
Transfer records (1)
Date (UTC)
Log
Type
Range moved
From
To
ARIN
Merger acquisition
AS5740
WorkForce Software LLC ARIN
Automatic Data Processing, Inc. ARIN
Every record in the ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC transfer logs that moved any part of this ASN (ARIN's from 2009, the RIPE NCC's from 2012, APNIC's from 2010, LACNIC's from 2016, AFRINIC's from 2018). A transfer between two registries is in both logs.
RDAP lookups
Not looked up. The tracker queries RDAP for changes as they're reported (on first sight, after 24 hours and after seven days); older changes aren't looked up because today's RDAP says nothing about the past.