rirtracker

IPv4 range · 512 addresses

204.115.22.0/23

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 (5)

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 2019-06-21) 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: 204.115.22.0/23 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 2019-06-21) source · retrieved
  3. After ARIN delegated statistics 2026-11-10 (produced 2026-11-10T14:00:21+00:00), after the report: reserved source · retrieved
2019-06-21 ARIN + Add Restored to the same holder Strong inference
ARIN-Issued
Add 204.115.22.0-204.115.23.255
Inventory
No effect on ARIN applicant inventory

No transfer record matches. ARIN's statistics show it reserved on 2019-06-20 and assigned (dated 2019-06-21) on 2019-06-22. The tracker saw it removed from registration on 2017-09-05 (654 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2019-06-21: "Add 204.115.22.0-204.115.23.255" source · retrieved
  2. Before ARIN delegated statistics 2019-06-20 (produced 2019-06-20T14:00:16+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2019-06-22 (produced 2019-06-22T14:00:16+00:00), after the report: assigned (dated 2019-06-21) source · retrieved
Classification history for this change (4 versions)
  1. : Restored to the same holder, strong inference (classifier 1.3.0)
  2. : Restored to the same holder, strong inference (classifier 1.3.1)
  3. : Restored to the same holder, strong inference (classifier 1.3.2)
  4. : Restored to the same holder, strong inference (classifier 1.4.0) current
2019-06-21 ARIN − Remove Change to ARIN's own pool record Strong inference
ARIN-Issued
Remove 204.115.22.0-204.115.23.255
Inventory
Part of the issuance reported the same day

ARIN's statistics show it reserved on 2019-06-20 and assigned (dated 2019-06-21) on 2019-06-22. ARIN removed its own pool record for this range as part of issuing it: the same report adds 204.115.22.0-204.115.23.255. The issuance is explained on that line.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2019-06-21: "Remove 204.115.22.0-204.115.23.255" source · retrieved
  2. Before ARIN delegated statistics 2019-06-20 (produced 2019-06-20T14:00:16+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2019-06-22 (produced 2019-06-22T14:00:16+00:00), after the report: assigned (dated 2019-06-21) source · retrieved
Classification history for this change (4 versions)
  1. : Change to ARIN's own pool record, strong inference (classifier 1.3.0)
  2. : Change to ARIN's own pool record, strong inference (classifier 1.3.1)
  3. : Change to ARIN's own pool record, strong inference (classifier 1.3.2)
  4. : Change to ARIN's own pool record, strong inference (classifier 1.4.0) current
2017-09-05 ARIN Not in ARIN-Issued Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2017-11-04. 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 assigned (dated 2011-05-12) on 2017-09-04 and reserved on 2017-09-06. 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 2017-11-04. 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: 204.115.22.0/23 assigned on 2017-09-05, reserved on 2017-09-06 source · retrieved
  2. Before ARIN delegated statistics 2017-09-04 (produced 2017-09-04T05:10:49+00:00), before the report: assigned (dated 2011-05-12) source · retrieved
  3. After ARIN delegated statistics 2017-09-06 (produced 2017-09-06T05:10:53+00:00), after the report: reserved source · retrieved
Classification history for this change (4 versions)
  1. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
  2. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
  3. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
  4. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
2011-05-12 ARIN + Add Apparent new issuance Strong inference
ARIN-Issued
Add 204.115.22.0-204.115.23.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it not issued on 2011-05-11 and assigned (dated 2011-05-12) on 2011-05-13. (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 2011-05-12: "Add 204.115.22.0-204.115.23.255" source · retrieved
  2. Before ARIN delegated statistics 2011-05-11, before the report: not issued source · retrieved
  3. After ARIN delegated statistics 2011-05-13, after the report: assigned (dated 2011-05-12) 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

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/204.115.22.0-204.115.23.255.json