rirtracker

IPv4 range · 1,024 addresses

104.193.28.0/22

Now

ARIN statistics
Allocated (dated 2014-09-15) (US), in the latest file
Registry
ARIN
Holder
Arista Networks, Inc.
From
ARIN's latest statistics and the latest transfer record

Latest change

Transfer log Merger/acquisition or reorganization

Reported
2026-01-13 (ARIN)
Confidence
Confirmed
Inventory
No effect on ARIN applicant inventory

Timeline (5)

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.

2026-01-13 ARIN Transfer log Merger/acquisition or reorganization Confirmed
Transfer log
Merger/acquisition: Avago Technologies U.S. Inc. (ARIN) to Arista Networks, Inc. (ARIN)
From
Avago Technologies U.S. Inc. ARIN
To
Arista Networks, Inc. ARIN
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a merger, acquisition or reorganization from Avago Technologies U.S. Inc. (ARIN) to Arista Networks, Inc. (ARIN) on 2026-01-13 19:37 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,
  1. Transfer log Transfer log: MERGER_ACQUISITION on 2026-01-13 19:37 UTC, Avago Technologies U.S. Inc. (ARIN) to Arista Networks, Inc. (ARIN); resources moved: 104.193.28.0/22 source · retrieved
  2. Before ARIN delegated statistics 2026-01-12 (produced 2026-01-12T14:00:47+00:00), before the report: allocated (dated 2014-09-15) source · retrieved
  3. After ARIN delegated statistics 2026-01-14 (produced 2026-01-14T14:00:47+00:00), after the report: allocated (dated 2014-09-15) source · retrieved
2025-11-14 ARIN Transfer log Merger/acquisition or reorganization Confirmed
Transfer log
Merger/acquisition: VMWare, LLC (ARIN) to Avago Technologies U.S. Inc. (ARIN)
From
VMWare, LLC 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, LLC (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, LLC (ARIN) to Avago Technologies U.S. Inc. (ARIN); resources moved: 104.193.28.0/22 source · retrieved
  2. Before ARIN delegated statistics 2025-11-13 (produced 2025-11-13T14:00:46+00:00), before the report: allocated (dated 2014-09-15) source · retrieved
  3. After ARIN delegated statistics 2025-11-15 (produced 2025-11-15T14:00:50+00:00), after the report: allocated (dated 2014-09-15) source · retrieved
2021-07-22 ARIN Transfer log Merger/acquisition or reorganization Confirmed
Transfer log
Merger/acquisition: VeloCloud Networks, Inc. (ARIN) to VMWare, Inc. (ARIN)
From
VeloCloud Networks, Inc. ARIN
To
VMWare, Inc. ARIN
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a merger, acquisition or reorganization from VeloCloud Networks, Inc. (ARIN) to VMWare, Inc. (ARIN) on 2021-07-22 16:28 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 2021-07-22 16:28 UTC, VeloCloud Networks, Inc. (ARIN) to VMWare, Inc. (ARIN); resources moved: 104.193.28.0/22 source · retrieved
  2. Before ARIN delegated statistics 2021-07-21 (produced 2021-07-21T14:00:13+00:00), before the report: assigned (dated 2014-09-15) source · retrieved
  3. After ARIN delegated statistics 2021-07-23 (produced 2021-07-23T14:00:13+00:00), after the report: allocated (dated 2014-09-15) source · retrieved
2014-09-15 ARIN + Add Apparent new issuance Strong inference
ARIN-Issued
Add 104.193.28.0-104.193.31.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it available on 2014-09-14 and assigned (dated 2014-09-15) on 2014-09-16. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2014-09-15: "Add 104.193.28.0-104.193.31.255" source · retrieved
  2. Before ARIN delegated statistics 2014-09-14 (produced 2014-09-14T05:04:58+00:00), before the report: available source · retrieved
  3. After ARIN delegated statistics 2014-09-16 (produced 2014-09-16T05:05:03+00:00), after the report: assigned (dated 2014-09-15) 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 new issuance, strong inference (classifier 1.3.2)
  4. : Apparent new issuance, strong inference (classifier 1.4.0) current
2014-09-15 ARIN − Remove Change to ARIN's own pool record Strong inference
ARIN-Issued
Remove 104.193.28.0-104.193.31.255
Inventory
Part of the issuance reported the same day

ARIN's statistics show it available on 2014-09-14 and assigned (dated 2014-09-15) on 2014-09-16. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.193.28.0-104.193.31.255. The issuance is explained on that line.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2014-09-15: "Remove 104.193.28.0-104.193.31.255" source · retrieved
  2. Before ARIN delegated statistics 2014-09-14 (produced 2014-09-14T05:04:58+00:00), before the report: available source · retrieved
  3. After ARIN delegated statistics 2014-09-16 (produced 2014-09-16T05:05:03+00:00), after the report: assigned (dated 2014-09-15) source · retrieved
Classification history for this change (4 versions)
  1. : Change to ARIN's own pool record, strong inference (classifier 1.3.0)
  2. : Change to ARIN's own pool record, strong inference (classifier 1.3.1)
  3. : Change to ARIN's own pool record, strong inference (classifier 1.3.2)
  4. : Change to ARIN's own pool record, strong inference (classifier 1.4.0) current

Transfer records (3)

Date (UTC)LogTypeRange movedFromTo
ARINMerger acquisition104.193.28.0/22 Avago Technologies U.S. Inc. ARINArista Networks, Inc. ARIN
ARINMerger acquisition104.193.28.0/22 VMWare, LLC ARINAvago Technologies U.S. Inc. ARIN
ARINMerger acquisition104.193.28.0/22 VeloCloud Networks, Inc. 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.

This page as data: ip/104.193.28.0-104.193.31.255.json