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.
2020-05-07ARINTransfer logMerger/acquisition or reorganizationConfirmed
Transfer log
Merger/acquisition: IBM (ARIN) to Acoustic, L.P. (ARIN)
From
IBM ARIN
To
Acoustic, L.P. ARIN
Inventory
No effect on ARIN applicant inventory
ARIN's transfer log records a merger, acquisition or reorganization from IBM (ARIN) to Acoustic, L.P. (ARIN) on 2020-05-07 14:19 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 2020-05-07 14:19 UTC, IBM (ARIN) to Acoustic, L.P. (ARIN); resources moved: AS53379source · retrieved
BeforeARIN delegated statistics 2020-05-06 (produced 2020-05-06T14:00:13+00:00), before the report: assigned (dated 2010-01-07)source · retrieved
AfterARIN delegated statistics 2020-05-08 (produced 2020-05-08T14:00:14+00:00), after the report: assigned (dated 2010-01-07)source · retrieved
2016-08-22ARINTransfer logMerger/acquisition or reorganizationConfirmed
Transfer log
Merger/acquisition: Silverpop Systems Inc. (ARIN) to IBM (ARIN)
From
Silverpop Systems Inc. ARIN
To
IBM ARIN
Inventory
No effect on ARIN applicant inventory
ARIN's transfer log records a merger, acquisition or reorganization from Silverpop Systems Inc. (ARIN) to IBM (ARIN) on 2016-08-22 12:29 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 2016-08-22 12:29 UTC, Silverpop Systems Inc. (ARIN) to IBM (ARIN); resources moved: AS53379source · retrieved
BeforeARIN delegated statistics 2016-08-21 (produced 2016-08-21T05:09:21+00:00), before the report: assigned (dated 2010-01-07)source · retrieved
AfterARIN delegated statistics 2016-08-23 (produced 2016-08-23T05:08:55+00:00), after the report: assigned (dated 2010-01-07)source · retrieved
Transfer records (2)
Date (UTC)
Log
Type
Range moved
From
To
ARIN
Merger acquisition
AS53379
IBM ARIN
Acoustic, L.P. ARIN
ARIN
Merger acquisition
AS53379
Silverpop Systems Inc. ARIN
IBM 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.