rirtracker

IPv4 range · 32,768 addresses

158.104.128.0/17

Now

ARIN statistics
Allocated (dated 2026-11-03) (US), in the latest file
Registry
ARIN
Holder
Mauswerks LLC C11758715
From
RDAP, looked up 2026-11-11 18:24 UTC

Latest change

+ Add Intra-ARIN transfer

Reported
2026-11-03 (ARIN)
Confidence
Confirmed
Inventory
No effect on ARIN applicant inventory

Timeline (1)

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.

2026-11-03 ARIN + Add Intra-ARIN transfer Confirmed
ARIN-Issued
Add 158.104.128.0-158.104.255.255
From
Willamette University ARIN
To
Medicus Labs, Inc. ARIN
Piece of
158.104.0.0/16: the rest of the block stayed with the seller
Inventory
No effect on ARIN applicant inventory

ARIN's transfer log records a transfer from Willamette University (ARIN) to Medicus Labs, Inc. (ARIN) on 2026-11-03 19:28 UTC. ARIN-Issued lists it as "Add" because the registration changed hands; it is not a new allocation from ARIN.

Evidence (4) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2026-11-03: "Add 158.104.128.0-158.104.255.255" source · retrieved
  2. Transfer log Transfer log: RESOURCE_TRANSFER on 2026-11-03 19:28 UTC, Willamette University (ARIN) to Medicus Labs, Inc. (ARIN); resources moved: 158.104.128.0/17 source · retrieved
  3. Before ARIN delegated statistics 2026-11-02 (produced 2026-11-02T14:00:22+00:00), before the report: allocated (dated 1992-02-25) source · retrieved
  4. After ARIN delegated statistics 2026-11-04 (produced 2026-11-04T14:00:22+00:00), after the report: allocated (dated 2026-11-03) source · retrieved

Transfer records (1)

Date (UTC)LogTypeRange movedFromTo
ARINResource transfer158.104.128.0/17 Willamette University ARINMedicus Labs, 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

Looked upWhyRegistryHandleOrganizationStatusLast changed
After 7 days ARINNET-158-104-128-0-2Mauswerks LLC C11758715active2026-11-04
After 24 hours ARINNET-158-104-128-0-2Mauswerks LLC C11758715active2026-11-04
First seen ARINNET-158-104-128-0-2Mauswerks LLC C11758715active2026-11-04

Organization-level details only; contact details are never kept. RDAP shows the registration when it was looked up, not in the past.

This page as data: ip/158.104.128.0-158.104.255.255.json