rirtracker

IPv4 range · 512 addresses

64.239.28.0/23

Now

ARIN statistics
Allocated (dated 2026-01-05) on 2026-10-09 (US)
Registry
ARIN
Holder
CPS ENERGY
From
ARIN's statistics for 2026-10-09 and the latest transfer record

Latest change

+ Add Intra-ARIN transfer

Reported
2026-01-05
Confidence
Confirmed
Inventory
No effect on ARIN applicant inventory

Timeline since 2026-01-01 (1)

2026-01-05 + Add Intra-ARIN transfer Confirmed
ARIN-Issued
Add 64.239.28.0-64.239.29.255
From
Aptum Technologies ARIN
To
CPS ENERGY ARIN
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a transfer from Aptum Technologies (ARIN) to CPS ENERGY (ARIN) on 2026-01-05 16:39 UTC. ARIN-Issued lists it as "Add" because the registration changed hands; it is not a new allocation from ARIN.

Evidence (4) · classifier 1.0.0,
  1. ARIN-Issued ARIN-Issued report for 2026-01-05: "Add 64.239.28.0-64.239.29.255" source · retrieved
  2. Transfer log Transfer log: RESOURCE_TRANSFER on 2026-01-05 16:39 UTC, Aptum Technologies (ARIN) to CPS ENERGY (ARIN); resources moved: 64.239.28.0/23 source · retrieved
  3. Before ARIN delegated statistics 2026-01-04 (produced 2026-01-04T14:00:47+00:00), before the report: allocated (dated 2001-09-25) source · retrieved
  4. After ARIN delegated statistics 2026-01-06 (produced 2026-01-06T14:00:48+00:00), after the report: allocated (dated 2026-01-05) source · retrieved

Transfer records (2)

Date (UTC)TypeRange movedFromTo
Resource transfer64.239.28.0/23 Aptum Technologies ARINCPS ENERGY ARIN
Merger acquisition64.239.0.0/17 Peer 1 Dedicated Hosting ARINCogeco Peer 1 ARIN

Every record in ARIN's transfer log that moved any part of this IPv4 range, back to 2009.

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/64.239.28.0-64.239.29.255.json