rirtracker

IPv4 range · 1,024 addresses

204.144.120.0/22

Now

ARIN statistics
Allocated (dated 2022-04-08) (US), in the latest file
Registry
ARIN
Holder
Adaptive Data Networks, LLC
From
ARIN's latest statistics and the latest transfer record

Latest change

Transfer log Merger/acquisition or reorganization

Reported
2026-06-15 (ARIN)
Confidence
Confirmed
Inventory
No effect on ARIN applicant inventory

Timeline (2)

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.

2026-06-15 ARIN Transfer log Merger/acquisition or reorganization Confirmed
Transfer log
Merger/acquisition: AM Data Service, Inc. (ARIN) to Adaptive Data Networks, LLC (ARIN)
From
AM Data Service, Inc. ARIN
To
Adaptive Data Networks, LLC ARIN
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a merger, acquisition or reorganization from AM Data Service, Inc. (ARIN) to Adaptive Data Networks, LLC (ARIN) on 2026-06-15 20:29 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,
  1. Transfer log Transfer log: MERGER_ACQUISITION on 2026-06-15 20:29 UTC, AM Data Service, Inc. (ARIN) to Adaptive Data Networks, LLC (ARIN); resources moved: 204.144.120.0/22 source · retrieved
  2. Before ARIN delegated statistics 2026-06-14 (produced 2026-06-14T09:00:20+00:00), before the report: allocated (dated 2022-04-08) source · retrieved
  3. After ARIN delegated statistics 2026-06-16 (produced 2026-06-16T09:00:20+00:00), after the report: allocated (dated 2022-04-08) source · retrieved
2022-04-08 ARIN + Add Apparent reissuance of previously removed resource Strong inference
ARIN-Issued
Add 204.144.120.0-204.144.123.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it reserved on 2022-04-07 and allocated (dated 2022-04-08) on 2022-04-09. The tracker saw this range removed from registration on 2021-07-05 (204.144.120.0/21), 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 2022-04-08: "Add 204.144.120.0-204.144.123.255" source · retrieved
  2. Before ARIN delegated statistics 2022-04-07 (produced 2022-04-07T13:00:11+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2022-04-09 (produced 2022-04-09T13:00:10+00:00), after the report: allocated (dated 2022-04-08) 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

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2022-04-08ARIN204.144.120.0/21− RemoveARIN pool record
2021-07-05ARIN204.144.120.0/21Not in ARIN-IssuedRemoved
2009-02-11ARIN204.144.120.0/21+ AddApparent new issuance

Transfer records (1)

Date (UTC)LogTypeRange movedFromTo
ARINMerger acquisition204.144.120.0/22 AM Data Service, Inc. ARINAdaptive Data Networks, LLC 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/204.144.120.0-204.144.123.255.json