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.
2026-09-21ARINTransfer logMerger/acquisition or reorganizationConfirmed
Transfer log
Merger/acquisition: BT Americas, Inc (ARIN) to Transaction Network Services, Inc. (ARIN)
From
BT Americas, Inc ARIN
To
Transaction Network Services, Inc. ARIN
Inventory
No effect on ARIN applicant inventory
ARIN's transfer log records a merger, acquisition or reorganization from BT Americas, Inc (ARIN) to Transaction Network Services, Inc. (ARIN) on 2026-09-21 15:49 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 2026-09-21 15:49 UTC, BT Americas, Inc (ARIN) to Transaction Network Services, Inc. (ARIN); resources moved: 152.100.0.0/16source · retrieved
BeforeARIN delegated statistics 2026-09-20 (produced 2026-09-20T13:00:21+00:00), before the report: allocated (dated 1991-09-12)source · retrieved
AfterARIN delegated statistics 2026-09-22 (produced 2026-09-22T13:00:21+00:00), after the report: allocated (dated 1991-09-12)source · retrieved
2024-12-12ARINTransfer logMerger/acquisition or reorganizationConfirmed
Transfer log
Merger/acquisition: RADIANZ Americas, Inc. (ARIN) to BT Americas, Inc (ARIN)
From
RADIANZ Americas, Inc. ARIN
To
BT Americas, Inc ARIN
Inventory
No effect on ARIN applicant inventory
ARIN's transfer log records a merger, acquisition or reorganization from RADIANZ Americas, Inc. (ARIN) to BT Americas, Inc (ARIN) on 2024-12-12 20:16 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,
Transfer logTransfer log: MERGER_ACQUISITION on 2024-12-12 20:16 UTC, RADIANZ Americas, Inc. (ARIN) to BT Americas, Inc (ARIN); resources moved: 152.100.0.0/16source · retrieved
BeforeARIN delegated statistics 2024-12-11 (produced 2024-12-11T14:01:07+00:00), before the report: allocated (dated 1991-09-12)source · retrieved
AfterARIN delegated statistics 2024-12-13 (produced 2024-12-13T14:01:05+00:00), after the report: allocated (dated 1991-09-12)source · retrieved
Transfer records (2)
Date (UTC)
Log
Type
Range moved
From
To
ARIN
Merger acquisition
152.100.0.0/16
BT Americas, Inc ARIN
Transaction Network Services, Inc. ARIN
ARIN
Merger acquisition
152.100.0.0/16
RADIANZ Americas, Inc. ARIN
BT Americas, 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.