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.
2018-10-29ARINTransfer logMerger/acquisition or reorganizationConfirmed
Transfer log
Merger/acquisition: WestNet, Inc. (ARIN) to University of Idaho (ARIN)
From
WestNet, Inc. ARIN
To
University of Idaho ARIN
Inventory
No effect on ARIN applicant inventory
ARIN's transfer log records a merger, acquisition or reorganization from WestNet, Inc. (ARIN) to University of Idaho (ARIN) on 2018-10-29 14:21 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 2018-10-29 14:21 UTC, WestNet, Inc. (ARIN) to University of Idaho (ARIN); resources moved: 198.60.236.0/22source · retrieved
BeforeARIN delegated statistics 2018-10-28 (produced 2018-10-28T05:00:10+00:00), before the report: allocated (dated 1993-02-09)source · retrieved
AfterARIN delegated statistics 2018-10-30 (produced 2018-10-30T05:00:10+00:00), after the report: allocated (dated 1993-02-09)source · retrieved
Electric Plant Board of the City of Glasgow, Kentucky ARIN
ARIN
Merger acquisition
198.60.236.0/22
WestNet, Inc. ARIN
University of Idaho ARIN
Every record in the ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC transfer logs that moved any part of this IPv4 range (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.