rirtracker

IPv4 range · 512 addresses

192.81.180.0/23

Now

ARIN statistics
Allocated (dated 2025-07-01) (US), in the latest file
Registry
ARIN
Holder
Not looked up
From
ARIN's latest statistics

Latest change

+ Add Apparent reissuance of previously removed resource

Reported
2025-07-01 (ARIN)
Confidence
Strong inference
Inventory
Likely issued from ARIN-controlled inventory

Timeline (6)

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.

2025-07-01 ARIN + Add Apparent reissuance of previously removed resource Strong inference
ARIN-Issued
Add 192.81.180.0-192.81.181.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it reserved on 2025-06-30 and allocated (dated 2025-07-01) on 2025-07-02. The tracker saw this range released from hold on 2025-04-03 (192.81.180.0-192.81.181.255), so it appears to have been issued again from ARIN's pool.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2025-07-01: "Add 192.81.180.0-192.81.181.255" source · retrieved
  2. Before ARIN delegated statistics 2025-06-30 (produced 2025-06-30T13:01:12+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2025-07-02 (produced 2025-07-02T13:01:11+00:00), after the report: allocated (dated 2025-07-01) 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 reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2025-07-01 ARIN − Remove Change to ARIN's own pool record Strong inference
ARIN-Issued
Remove 192.81.180.0-192.81.181.255
Inventory
Part of the issuance reported the same day

ARIN's statistics show it reserved on 2025-06-30 and allocated (dated 2025-07-01) on 2025-07-02. ARIN removed its own pool record for this range as part of issuing it: the same report adds 192.81.180.0-192.81.181.255. The issuance is explained on that line.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2025-07-01: "Remove 192.81.180.0-192.81.181.255" source · retrieved
  2. Before ARIN delegated statistics 2025-06-30 (produced 2025-06-30T13:01:12+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2025-07-02 (produced 2025-07-02T13:01:11+00:00), after the report: allocated (dated 2025-07-01) 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
2025-04-03 ARIN − Remove No substantive resource change found Strong inference
ARIN-Issued
Remove 192.81.180.0-192.81.181.255
Inventory
No effect on ARIN applicant inventory

ARIN-Issued lists it as "Remove", but ARIN's statistics show the same record before and after (reserved).

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2025-04-03: "Remove 192.81.180.0-192.81.181.255" source · retrieved
  2. Before ARIN delegated statistics 2025-04-02 (produced 2025-04-02T13:01:10+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2025-04-04 (produced 2025-04-04T13:01:09+00:00), after the report: reserved source · retrieved
Classification history for this change (4 versions)
  1. : No substantive resource change found, strong inference (classifier 1.3.0)
  2. : No substantive resource change found, strong inference (classifier 1.3.1)
  3. : No substantive resource change found, strong inference (classifier 1.3.2)
  4. : No substantive resource change found, strong inference (classifier 1.4.0) current
2024-05-06 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 2024-07-05. 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 2014-12-30) on 2024-05-05 and reserved on 2024-05-07. 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 2024-07-05. 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: 192.81.180.0/23 allocated on 2024-05-06, reserved on 2024-05-07 source · retrieved
  2. Before ARIN delegated statistics 2024-05-05 (produced 2024-05-05T13:00:48+00:00), before the report: allocated (dated 2014-12-30) source · retrieved
  3. After ARIN delegated statistics 2024-05-07 (produced 2024-05-07T13:00:50+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
2014-12-30 ARIN + Add Apparent new issuance Strong inference
ARIN-Issued
Add 192.81.180.0-192.81.181.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it reserved on 2014-12-29 and assigned (dated 2014-12-30) on 2014-12-31. 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 2014-12-30: "Add 192.81.180.0-192.81.181.255" source · retrieved
  2. Before ARIN delegated statistics 2014-12-29 (produced 2014-12-29T06:04:23+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2014-12-31 (produced 2014-12-31T06:04:10+00:00), after the report: assigned (dated 2014-12-30) 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 new issuance, strong inference (classifier 1.3.2)
  4. : Apparent new issuance, strong inference (classifier 1.4.0) current
2014-12-30 ARIN − Remove Change to ARIN's own pool record Strong inference
ARIN-Issued
Remove 192.81.180.0-192.81.181.255
Inventory
Part of the issuance reported the same day

ARIN's statistics show it reserved on 2014-12-29 and assigned (dated 2014-12-30) on 2014-12-31. ARIN removed its own pool record for this range as part of issuing it: the same report adds 192.81.180.0-192.81.181.255. The issuance is explained on that line.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2014-12-30: "Remove 192.81.180.0-192.81.181.255" source · retrieved
  2. Before ARIN delegated statistics 2014-12-29 (produced 2014-12-29T06:04:23+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2014-12-31 (produced 2014-12-31T06:04:10+00:00), after the report: assigned (dated 2014-12-30) 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

Transfer records

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

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.

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