IPv4 range · 1,024 addresses

45.42.0.0/22

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: 2024-07-08 (ARIN)
Confidence: Strong inference
Inventory: Possible future reissue candidate after hold

Hold

Removed: 2024-07-08 (ARIN)
Estimated hold end: 2024-09-06 (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.

2024-07-08 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 2024-09-06. 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 2015-02-10) on 2024-07-07 and reserved on 2024-07-09. 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 2024-09-06. This does not confirm availability.

Evidence (3) · classifier 1.4.0, 2026-10-14 00:12 UTC

Statistics Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 45.42.0.0/22 allocated on 2024-07-08, reserved on 2024-07-09 source · retrieved 2026-10-12 23:42 UTC
Before ARIN delegated statistics 2024-07-07 (produced 2024-07-07T13:00:44+00:00), before the report: allocated (dated 2015-02-10) source · retrieved 2026-10-12 23:42 UTC
After ARIN delegated statistics 2024-07-09 (produced 2024-07-09T13:00:45+00:00), after the report: reserved source · retrieved 2026-10-12 23:42 UTC

Classification history for this change (4 versions)

2026-10-13 06:08 UTC: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
2026-10-13 08:22 UTC: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
2026-10-13 15:06 UTC: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
2026-10-14 00:12 UTC: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current

2023-07-10 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 2023-09-08. 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 2015-02-10) on 2023-07-09 and reserved on 2023-07-11. 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 2023-09-08. This does not confirm availability.

Evidence (3) · classifier 1.4.0, 2026-10-14 00:10 UTC

Statistics Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 45.42.0.0/22 allocated on 2023-07-10, reserved on 2023-07-11 source · retrieved 2026-10-12 23:23 UTC
Before ARIN delegated statistics 2023-07-09 (produced 2023-07-09T13:00:12+00:00), before the report: allocated (dated 2015-02-10) source · retrieved 2026-10-12 23:23 UTC
After ARIN delegated statistics 2023-07-11 (produced 2023-07-11T13:00:10+00:00), after the report: reserved source · retrieved 2026-10-12 23:23 UTC

Classification history for this change (4 versions)

2026-10-13 06:01 UTC: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
2026-10-13 08:21 UTC: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
2026-10-13 15:05 UTC: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
2026-10-14 00:10 UTC: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current

2018-07-10 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 2018-09-08. 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 2015-02-10) on 2018-07-09 and reserved on 2018-07-11. 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 2018-09-08. This does not confirm availability.

Evidence (3) · classifier 1.4.0, 2026-10-14 00:04 UTC

Statistics Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 45.42.0.0/22 allocated on 2018-07-10, reserved on 2018-07-11 source · retrieved 2026-10-12 21:49 UTC
Before ARIN delegated statistics 2018-07-09 (produced 2018-07-09T05:00:24+00:00), before the report: allocated (dated 2015-02-10) source · retrieved 2026-10-12 21:49 UTC
After ARIN delegated statistics 2018-07-11 (produced 2018-07-11T05:00:24+00:00), after the report: reserved source · retrieved 2026-10-12 21:49 UTC

Classification history for this change (4 versions)

2026-10-13 05:22 UTC: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
2026-10-13 08:16 UTC: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
2026-10-13 15:00 UTC: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
2026-10-14 00:04 UTC: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current

2015-02-10 ARIN + Add Apparent reissuance of previously removed resource Strong inference

ARIN-Issued: Add 45.42.0.0-45.42.3.255
Inventory: Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it available on 2015-02-09 and allocated (dated 2015-02-10) on 2015-02-11. The tracker saw this range released from hold on 2011-08-03 (45.2.0.0-45.255.255.255), so it appears to have been issued again from ARIN's pool.

Evidence (3) · classifier 1.4.0, 2026-10-13 23:51 UTC

ARIN-Issued ARIN-Issued report for 2015-02-10: "Add 45.42.0.0-45.42.3.255" source · retrieved 2026-10-12 18:38 UTC
Before ARIN delegated statistics 2015-02-09 (produced 2015-02-09T06:05:17+00:00), before the report: available source · retrieved 2026-10-12 20:48 UTC
After ARIN delegated statistics 2015-02-11 (produced 2015-02-11T06:05:57+00:00), after the report: allocated (dated 2015-02-10) source · retrieved 2026-10-12 20:48 UTC

Classification history for this change (4 versions)

2026-10-13 03:29 UTC: Apparent reissuance of previously removed resource, strong inference (classifier 1.3.0)
2026-10-13 08:05 UTC: Apparent reissuance of previously removed resource, strong inference (classifier 1.3.1)
2026-10-13 14:48 UTC: Apparent reissuance of previously removed resource, strong inference (classifier 1.3.2)
2026-10-13 23:51 UTC: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current

2015-02-10 ARIN − Remove Change to ARIN's own pool record Strong inference

ARIN-Issued: Remove 45.42.0.0-45.42.3.255
Inventory: Part of the issuance reported the same day

ARIN's statistics show it available on 2015-02-09 and allocated (dated 2015-02-10) on 2015-02-11. ARIN removed its own pool record for this range as part of issuing it: the same report adds 45.42.0.0-45.42.3.255. The issuance is explained on that line.

Evidence (3) · classifier 1.4.0, 2026-10-13 23:51 UTC

ARIN-Issued ARIN-Issued report for 2015-02-10: "Remove 45.42.0.0-45.42.3.255" source · retrieved 2026-10-12 18:38 UTC
Before ARIN delegated statistics 2015-02-09 (produced 2015-02-09T06:05:17+00:00), before the report: available source · retrieved 2026-10-12 20:48 UTC
After ARIN delegated statistics 2015-02-11 (produced 2015-02-11T06:05:57+00:00), after the report: allocated (dated 2015-02-10) source · retrieved 2026-10-12 20:48 UTC

Classification history for this change (4 versions)

2026-10-13 03:29 UTC: Change to ARIN's own pool record, strong inference (classifier 1.3.0)
2026-10-13 08:05 UTC: Change to ARIN's own pool record, strong inference (classifier 1.3.1)
2026-10-13 14:48 UTC: Change to ARIN's own pool record, strong inference (classifier 1.3.2)
2026-10-13 23:51 UTC: Change to ARIN's own pool record, strong inference (classifier 1.4.0) current

Changes to overlapping ranges

Date	Registry	Range	Recorded as	What happened
2011-08-03	ARIN	45.2.0.0 - 45.255.255.255	− Remove	Unresolved
2011-05-23	ARIN	45.2.0.0 - 45.255.255.255	− Remove	Unresolved
2010-11-16	ARIN	45.0.0.0/8	Not in ARIN-Issued	Removed

Date

Registry

Range

Recorded as

What happened

2011-08-03

ARIN

45.2.0.0 - 45.255.255.255

− Remove

Unresolved

2011-05-23

ARIN

45.2.0.0 - 45.255.255.255

− Remove

Unresolved

2010-11-16

ARIN

45.0.0.0/8

Not in ARIN-Issued

Removed

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.

This page as data: ip/45.42.0.0-45.42.3.255.json