rirtracker

IPv4 range · 1,024 addresses

104.37.40.0/22

Now

ARIN statistics
Allocated (dated 2022-10-04) (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
2022-10-04 (ARIN)
Confidence
Observed only
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.

2022-10-04 ARIN + Add Apparent reissuance of previously removed resource Observed only
ARIN-Issued
Add 104.37.40.0-104.37.43.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it reserved on 2022-10-03 and allocated (dated 2022-10-04) on 2022-10-05. The tracker saw this range released from hold on 2022-10-03 (104.37.40.0-104.37.43.255), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2022-10-03: Remove 104.37.40.0-104.37.43.255), so the before-and-after statistics may include it.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2022-10-04: "Add 104.37.40.0-104.37.43.255" source · retrieved
  2. Before ARIN delegated statistics 2022-10-03 (produced 2022-10-03T13:00:10+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2022-10-05 (produced 2022-10-05T13:00:11+00:00), after the report: allocated (dated 2022-10-04) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent reissuance of previously removed resource, observed only (classifier 1.3.0)
  2. : Apparent reissuance of previously removed resource, observed only (classifier 1.3.1)
  3. : Apparent reissuance of previously removed resource, observed only (classifier 1.3.2)
  4. : Apparent reissuance of previously removed resource, observed only (classifier 1.4.0) current
2022-10-04 ARIN − Remove Change to ARIN's own pool record Observed only
ARIN-Issued
Remove 104.37.40.0-104.37.43.255
Inventory
Part of the issuance reported the same day

ARIN's statistics show it reserved on 2022-10-03 and allocated (dated 2022-10-04) on 2022-10-05. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.37.40.0-104.37.43.255. The issuance is explained on that line. Another change to this range was reported the day before or after (2022-10-03: Remove 104.37.40.0-104.37.43.255), so the before-and-after statistics may include it.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2022-10-04: "Remove 104.37.40.0-104.37.43.255" source · retrieved
  2. Before ARIN delegated statistics 2022-10-03 (produced 2022-10-03T13:00:10+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2022-10-05 (produced 2022-10-05T13:00:11+00:00), after the report: allocated (dated 2022-10-04) source · retrieved
Classification history for this change (4 versions)
  1. : Change to ARIN's own pool record, observed only (classifier 1.3.0)
  2. : Change to ARIN's own pool record, observed only (classifier 1.3.1)
  3. : Change to ARIN's own pool record, observed only (classifier 1.3.2)
  4. : Change to ARIN's own pool record, observed only (classifier 1.4.0) current
2022-10-03 ARIN − Remove No substantive resource change found Observed only
ARIN-Issued
Remove 104.37.40.0-104.37.43.255
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). Another change to this range was reported the day before or after (2022-10-04: Remove 104.37.40.0-104.37.43.255; 2022-10-04: Add 104.37.40.0-104.37.43.255), so the before-and-after statistics may include it.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2022-10-03: "Remove 104.37.40.0-104.37.43.255" source · retrieved
  2. Before ARIN delegated statistics 2022-10-02 (produced 2022-10-02T13:00:10+00:00), before the report: reserved source · retrieved
  3. After ARIN delegated statistics 2022-10-04 (produced 2022-10-04T13:00:11+00:00), after the report: reserved source · retrieved
Classification history for this change (4 versions)
  1. : No substantive resource change found, observed only (classifier 1.3.0)
  2. : No substantive resource change found, observed only (classifier 1.3.1)
  3. : No substantive resource change found, observed only (classifier 1.3.2)
  4. : No substantive resource change found, observed only (classifier 1.4.0) current
2021-11-08 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 2022-01-07. 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 2014-06-12) on 2021-11-07 and reserved on 2021-11-09. 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 2022-01-07. 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: 104.37.40.0/22 allocated on 2021-11-08, reserved on 2021-11-09 source · retrieved
  2. Before ARIN delegated statistics 2021-11-07 (produced 2021-11-07T14:00:13+00:00), before the report: allocated (dated 2014-06-12) source · retrieved
  3. After ARIN delegated statistics 2021-11-09 (produced 2021-11-09T14:00:12+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
2014-06-12 ARIN + Add Apparent new issuance Strong inference
ARIN-Issued
Add 104.37.40.0-104.37.43.255
Inventory
Likely issued from ARIN-controlled inventory

No transfer record matches. ARIN's statistics show it available on 2014-06-11 and allocated (dated 2014-06-12) on 2014-06-13. 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 2014-06-12: "Add 104.37.40.0-104.37.43.255" source · retrieved
  2. Before ARIN delegated statistics 2014-06-11 (produced 2014-06-11T05:03:51+00:00), before the report: available source · retrieved
  3. After ARIN delegated statistics 2014-06-13 (produced 2014-06-13T05:03:40+00:00), after the report: allocated (dated 2014-06-12) 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
2014-06-12 ARIN − Remove Change to ARIN's own pool record Strong inference
ARIN-Issued
Remove 104.37.40.0-104.37.43.255
Inventory
Part of the issuance reported the same day

ARIN's statistics show it available on 2014-06-11 and allocated (dated 2014-06-12) on 2014-06-13. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.37.40.0-104.37.43.255. The issuance is explained on that line.

Evidence (3) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2014-06-12: "Remove 104.37.40.0-104.37.43.255" source · retrieved
  2. Before ARIN delegated statistics 2014-06-11 (produced 2014-06-11T05:03:51+00:00), before the report: available source · retrieved
  3. After ARIN delegated statistics 2014-06-13 (produced 2014-06-13T05:03:40+00:00), after the report: allocated (dated 2014-06-12) 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.

This page as data: ip/104.37.40.0-104.37.43.255.json