rirtracker

IPv4 range · 4,096 addresses

173.224.144.0/20

Now

RIPE NCC statistics
Allocated (dated 2010-01-19) (US), in the latest file
Registry
RIPE NCC
Holder
Steel-Axis LLC
From
The RIPE NCC's latest statistics and the latest transfer record

Latest change

Not in ARIN-Issued Inter-RIR transfer out of ARIN

Reported
2025-11-06 (ARIN)
Confidence
Confirmed
Inventory
Transferred out of ARIN administration; not offered to ARIN applicants

Timeline (3)

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.

2025-11-06 ARIN Not in ARIN-Issued Inter-RIR transfer out of ARIN Confirmed
From
West IP Communications ARIN
To
Steel-Axis LLC RIPE NCC
Same transfer
The RIPE NCC recorded it too: RIPE NCC, 2025-11-06.
Inventory
Transferred out of ARIN administration; not offered to ARIN applicants

ARIN's transfer log records a transfer from West IP Communications (ARIN) to Steel-Axis LLC (RIPE NCC) on 2025-11-06 14:53 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants.

Evidence (4) · classifier 1.4.0,
  1. Statistics Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 173.224.144.0/20 allocated on 2025-11-06, not listed on 2025-11-07 source · retrieved
  2. Transfer log Transfer log: RESOURCE_TRANSFER on 2025-11-06 14:53 UTC, West IP Communications (ARIN) to Steel-Axis LLC (RIPE NCC); resources moved: 173.224.144.0/20 source · retrieved
  3. Before ARIN delegated statistics 2025-11-05 (produced 2025-11-05T14:00:48+00:00), before the report: allocated (dated 2010-01-19) source · retrieved
  4. After ARIN delegated statistics 2025-11-07 (produced 2025-11-07T14:00:48+00:00), after the report: not listed source · retrieved
Classification history for this change (4 versions)
  1. : Inter-RIR transfer out of ARIN, confirmed (classifier 1.3.0)
  2. : Inter-RIR transfer out of ARIN, confirmed (classifier 1.3.1)
  3. : Inter-RIR transfer out of ARIN, confirmed (classifier 1.3.2)
  4. : Inter-RIR transfer out of ARIN, confirmed (classifier 1.4.0) current
2025-11-06 RIPE NCC Transfer log Inter-RIR transfer into the RIPE NCC Confirmed
Transfer log
Transfer: (no name) (ARIN) to steel-axis LLC (RIPE NCC)
From
(no name given) ARIN
To
steel-axis LLC RIPE NCC
Same transfer
Also a change at ARIN, the sending registry: ARIN, 2025-11-06. Lists that cover every registry show it there.
Inventory
Transferred into RIPE NCC administration; not a new issuance

The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to steel-axis LLC (RIPE NCC) on 2025-11-06 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance.

Evidence (3) · classifier 1.4.0,
  1. Transfer log Transfer log: RESOURCE_TRANSFER on 2025-11-06 19:00 UTC, (no name) (ARIN) to steel-axis LLC (RIPE NCC); resources moved: 173.224.144.0/20 source · retrieved
  2. Before RIPE NCC delegated statistics 2025-11-05 (produced 2025-11-05T22:59:59+00:00), before the change: not listed source · retrieved
  3. After RIPE NCC delegated statistics 2025-11-06 (produced 2025-11-06T22:59:59+00:00), after the change: allocated (dated 2010-01-19) source · retrieved
Classification history for this change (4 versions)
  1. : Inter-RIR transfer into the RIPE NCC, confirmed (classifier 1.3.0)
  2. : Inter-RIR transfer into the RIPE NCC, confirmed (classifier 1.3.1)
  3. : Inter-RIR transfer into the RIPE NCC, confirmed (classifier 1.3.2)
  4. : Inter-RIR transfer into the RIPE NCC, confirmed (classifier 1.4.0) current
2010-01-19 ARIN + Add Apparent new issuance Strong inference
ARIN-Issued
Add 173.224.144.0-173.224.159.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it not issued on 2010-01-18 and allocated (dated 2010-01-19) on 2010-01-20. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2010-01-19: "Add 173.224.144.0-173.224.159.255" source · retrieved
  2. Before ARIN delegated statistics 2010-01-18, before the report: not issued source · retrieved
  3. After ARIN delegated statistics 2010-01-20, after the report: allocated (dated 2010-01-19) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent new issuance, strong inference (classifier 1.3.0)
  2. : Apparent new issuance, strong inference (classifier 1.3.1)
  3. : Apparent new issuance, strong inference (classifier 1.3.2)
  4. : Apparent new issuance, strong inference (classifier 1.4.0) current

Transfer records (2)

Date (UTC)LogTypeRange movedFromTo
RIPE NCCResource transfer173.224.144.0/20 (no name given) ARINsteel-axis LLC RIPE NCC
ARINResource transfer173.224.144.0/20 West IP Communications ARINSteel-Axis LLC RIPE NCC

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/173.224.144.0-173.224.159.255.json