IPv4 range · 2,048 addresses

66.133.72.0/21

Now

ARIN statistics: Allocated (dated 2026-09-29) on 2026-10-09 (CA)
Registry: ARIN
Holder: Nimbus Limited.
From: ARIN's statistics for 2026-10-09 and the latest transfer record

Latest change

+ Add Intra-ARIN transfer

Reported: 2026-09-29
Confidence: Confirmed
Inventory: No effect on ARIN applicant inventory

Timeline since 2026-01-01 (1)

2026-09-29 + Add Intra-ARIN transfer Confirmed

ARIN-Issued: Add 66.133.72.0-66.133.79.255
From: DOJ-USMS ARIN
To: Nimbus Limited. ARIN
Inventory: No effect on ARIN applicant inventory

ARIN's transfer log records a transfer from DOJ-USMS (ARIN) to Nimbus Limited. (ARIN) on 2026-09-29 19:55 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, 2026-10-09 19:28 UTC

ARIN-Issued ARIN-Issued report for 2026-09-29: "Add 66.133.72.0-66.133.79.255" source · retrieved 2026-10-09 18:54 UTC
Transfer log Transfer log: RESOURCE_TRANSFER on 2026-09-29 19:55 UTC, DOJ-USMS (ARIN) to Nimbus Limited. (ARIN); resources moved: 66.133.72.0/21 source · retrieved 2026-10-09 18:54 UTC
Before ARIN delegated statistics 2026-09-28 (produced 2026-09-28T13:00:21+00:00), before the report: allocated (dated 2015-12-09) source · retrieved 2026-10-09 19:08 UTC
After ARIN delegated statistics 2026-09-30 (produced 2026-09-30T13:00:21+00:00), after the report: allocated (dated 2026-09-29) source · retrieved 2026-10-09 19:08 UTC

Transfer records (3)

Date (UTC)	Type	Range moved	From	To
2026-09-29 19:55 UTC	Resource transfer	66.133.72.0/21	DOJ-USMS ARIN	Nimbus Limited. ARIN
2024-05-08 22:10 UTC	Merger acquisition	66.133.72.0/21	Micfo, LLC. ARIN	U.S. Marshals Service in accordance with the Final Order of Forfeiture ARIN
2015-12-09 18:06 UTC	Resource transfer	66.133.72.0/21	KEYSTONE IT INC ARIN	Micfo, LLC. ARIN

Date (UTC)

Type

Range moved

From

2026-09-29 19:55 UTC

Resource transfer

66.133.72.0/21

DOJ-USMS ARIN

Nimbus Limited. ARIN

2024-05-08 22:10 UTC

Merger acquisition

66.133.72.0/21

Micfo, LLC. ARIN

U.S. Marshals Service in accordance with the Final Order of Forfeiture ARIN

2015-12-09 18:06 UTC

Resource transfer

66.133.72.0/21

KEYSTONE IT INC ARIN

Micfo, LLC. 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/66.133.72.0-66.133.79.255.json