rirtracker

IPv4 range · 1,024 addresses

66.205.228.0/22

Now

ARIN statistics
Allocated (dated 2019-09-26) (US), in the latest file
Registry
ARIN
Holder
Avago Technologies U.S. Inc.
From
ARIN's latest statistics and the latest transfer record

Latest change

Transfer log Merger/acquisition or reorganization

Reported
2025-11-14 (ARIN)
Confidence
Confirmed
Inventory
No effect on ARIN applicant inventory

Timeline (4)

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.

2025-11-14 ARIN Transfer log Merger/acquisition or reorganization Confirmed
Transfer log
Merger/acquisition: VMWare, Inc. (ARIN) to Avago Technologies U.S. Inc. (ARIN)
From
VMWare, Inc. ARIN
To
Avago Technologies U.S. Inc. ARIN
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a merger, acquisition or reorganization from VMWare, Inc. (ARIN) to Avago Technologies U.S. Inc. (ARIN) on 2025-11-14 17:15 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,
  1. Transfer log Transfer log: MERGER_ACQUISITION on 2025-11-14 17:15 UTC, VMWare, Inc. (ARIN) to Avago Technologies U.S. Inc. (ARIN); resources moved: 66.205.228.0/22 source · retrieved
  2. Before ARIN delegated statistics 2025-11-13 (produced 2025-11-13T14:00:46+00:00), before the report: allocated (dated 2019-09-26) source · retrieved
  3. After ARIN delegated statistics 2025-11-15 (produced 2025-11-15T14:00:50+00:00), after the report: allocated (dated 2019-09-26) source · retrieved
2021-03-24 ARIN Transfer log Merger/acquisition or reorganization Confirmed
Transfer log
Merger/acquisition: The Mode Group (ARIN) to VMWare, Inc. (ARIN)
From
The Mode Group ARIN
To
VMWare, Inc. ARIN
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a merger, acquisition or reorganization from The Mode Group (ARIN) to VMWare, Inc. (ARIN) on 2021-03-24 15:16 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,
  1. Transfer log Transfer log: MERGER_ACQUISITION on 2021-03-24 15:16 UTC, The Mode Group (ARIN) to VMWare, Inc. (ARIN); resources moved: 66.205.228.0/22 source · retrieved
  2. Before ARIN delegated statistics 2021-03-23 (produced 2021-03-23T14:00:13+00:00), before the report: allocated (dated 2019-09-26) source · retrieved
  3. After ARIN delegated statistics 2021-03-25 (produced 2021-03-25T14:00:13+00:00), after the report: allocated (dated 2019-09-26) source · retrieved
2019-09-26 ARIN + Add Apparent reissuance of previously removed resource Strong inference
ARIN-Issued
Add 66.205.228.0-66.205.231.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it reserved on 2019-09-25 and allocated (dated 2019-09-26) on 2019-09-27. The tracker saw this range released from hold on 2019-08-30 (66.205.228.0-66.205.231.255), so it appears to have been issued again from ARIN's pool.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2019-09-26: "Add 66.205.228.0-66.205.231.255" source · retrieved
  2. Before ARIN delegated statistics 2019-09-25 (produced 2019-09-25T14:00:17+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2019-09-27 (produced 2019-09-27T14:00:16+00:00), after the report: allocated (dated 2019-09-26) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.0)
  2. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.1)
  3. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.2)
  4. : Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2019-08-30 ARIN − Remove No substantive resource change found Strong inference
ARIN-Issued
Remove 66.205.228.0-66.205.231.255
Inventory
No effect on ARIN applicant inventory

ARIN-Issued lists it as "Remove", but ARIN's statistics show the same record before and after (reserved).

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2019-08-30: "Remove 66.205.228.0-66.205.231.255" source · retrieved
  2. Before ARIN delegated statistics 2019-08-29 (produced 2019-08-29T14:00:16+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2019-08-31 (produced 2019-08-31T14:00:17+00:00), after the report: reserved source · retrieved
Classification history for this change (4 versions)
  1. : No substantive resource change found, strong inference (classifier 1.3.0)
  2. : No substantive resource change found, strong inference (classifier 1.3.1)
  3. : No substantive resource change found, strong inference (classifier 1.3.2)
  4. : No substantive resource change found, strong inference (classifier 1.4.0) current

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2013-07-08ARIN66.205.224.0/19Not in ARIN-IssuedRemoved

Transfer records (2)

Date (UTC)LogTypeRange movedFromTo
ARINMerger acquisition66.205.228.0/22 VMWare, Inc. ARINAvago Technologies U.S. Inc. ARIN
ARINMerger acquisition66.205.228.0/22 The Mode Group ARINVMWare, Inc. 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.

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