rirtracker

IPv4 range · 256 addresses

23.181.56.0/24

Now

ARIN statistics
Reserved, in the latest file
Registry
ARIN
Holder
None: it's in the registry's own pool
From
ARIN's latest statistics

Latest change

Not in ARIN-Issued Removed (return, revocation or reclamation not publicly distinguishable)

Reported
2026-11-09 (ARIN)
Confidence
Strong inference Provisional
Inventory
Possible future reissue candidate after hold

Hold

Removed
2026-11-09 (ARIN)
Estimated hold end
2027-01-08 (from ARIN's published rule)
Now
Possible reissue candidate; not confirmed available.

Timeline (2)

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.

2026-11-09 ARIN Not in ARIN-Issued Removed (return, revocation or reclamation not publicly distinguishable) Strong inference Provisional
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2027-01-08. Possible reissue candidate after this date; not confirmed available.

Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2024-06-11) on 2026-11-08 and reserved on 2026-11-10. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2027-01-08. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 23.181.56.0/24 allocated on 2026-11-09, reserved on 2026-11-10 source · retrieved
  2. Before ARIN delegated statistics 2026-11-08 (produced 2026-11-08T14:00:21+00:00), before the report: allocated (dated 2024-06-11) source · retrieved
  3. After ARIN delegated statistics 2026-11-10 (produced 2026-11-10T14:00:21+00:00), after the report: reserved source · retrieved
2024-06-11 ARIN + Add Apparent new issuance Strong inference
ARIN-Issued
Add 23.181.56.0-23.181.56.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it reserved on 2024-06-10 and allocated (dated 2024-06-11) on 2024-06-12. 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 2024-06-11: "Add 23.181.56.0-23.181.56.255" source · retrieved
  2. Before ARIN delegated statistics 2024-06-10 (produced 2024-06-10T13:00:46+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2024-06-12 (produced 2024-06-12T13:00:47+00:00), after the report: allocated (dated 2024-06-11) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.0)
  2. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.1)
  3. : Apparent reissuance of previously removed resource, strong inference (classifier 1.3.2)
  4. : Apparent new issuance, strong inference (classifier 1.4.0) current

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2013-03-26ARIN23.128.0.0/10− RemoveHold released

Transfer records

No transfer log has a transfer of any part of this IPv4 range.

RDAP lookups

Looked upWhyRegistryHandleOrganizationStatusLast changed
After 24 hours not registered (RDAP 404)
First seen not registered (RDAP 404)

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/23.181.56.0-23.181.56.255.json