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.
2026-07-14ARINTransfer logMerger/acquisition or reorganizationConfirmed
Transfer log
Merger/acquisition: BMC Software, Inc. (ARIN) to BMC Helix, Inc. (ARIN)
From
BMC Software, Inc. ARIN
To
BMC Helix, Inc. ARIN
Inventory
No effect on ARIN applicant inventory
ARIN's transfer log records a merger, acquisition or reorganization from BMC Software, Inc. (ARIN) to BMC Helix, Inc. (ARIN) on 2026-07-14 21:43 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 2026-07-14 21:43 UTC, BMC Software, Inc. (ARIN) to BMC Helix, Inc. (ARIN); resources moved: AS17391source · retrieved
BeforeARIN delegated statistics 2026-07-13 (produced 2026-07-13T09:00:22+00:00), before the report: assigned (dated 2006-09-06)source · retrieved
AfterARIN delegated statistics 2026-07-15 (produced 2026-07-15T09:00:21+00:00), after the report: assigned (dated 2006-09-06)source · retrieved
2021-11-02ARINTransfer logMerger/acquisition or reorganizationConfirmed
Transfer log
Merger/acquisition: Compuware Corporation (ARIN) to BMC Software, Inc. (ARIN)
From
Compuware Corporation ARIN
To
BMC Software, Inc. ARIN
Inventory
No effect on ARIN applicant inventory
ARIN's transfer log records a merger, acquisition or reorganization from Compuware Corporation (ARIN) to BMC Software, Inc. (ARIN) on 2021-11-02 21:21 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 2021-11-02 21:21 UTC, Compuware Corporation (ARIN) to BMC Software, Inc. (ARIN); resources moved: AS17391source · retrieved
BeforeARIN delegated statistics 2021-11-01 (produced 2021-11-01T14:00:13+00:00), before the report: assigned (dated 2006-09-06)source · retrieved
AfterARIN delegated statistics 2021-11-03 (produced 2021-11-03T14:00:13+00:00), after the report: assigned (dated 2006-09-06)source · retrieved
Transfer records (2)
Date (UTC)
Log
Type
Range moved
From
To
ARIN
Merger acquisition
AS17391
BMC Software, Inc. ARIN
BMC Helix, Inc. ARIN
ARIN
Merger acquisition
AS17391
Compuware Corporation ARIN
BMC Software, 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.