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.
2020-03-26ARIN− RemoveChange to ARIN's own pool recordStrong inference
ARIN-Issued
Remove 206.83.144.0-206.83.159.255
Inventory
Part of the issuance reported the same day
ARIN's statistics show it reserved on 2020-03-25 and allocated (dated 2020-03-26), reserved on 2020-03-27. ARIN removed its own pool record for this range as part of issuing it: the same report adds 206.83.148.0-206.83.149.255, 206.83.150.0-206.83.150.255, 206.83.152.0-206.83.153.255, 206.83.156.0-206.83.159.255. The issuance is explained on those lines.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2020-03-26: "Remove 206.83.144.0-206.83.159.255"source · retrieved
BeforeARIN delegated statistics 2020-03-25 (produced 2020-03-25T14:00:13+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2020-03-27 (produced 2020-03-27T14:00:13+00:00), after the report: allocated (dated 2020-03-26), reservedsource · retrieved
Classification history for this change (4 versions)
: Change to ARIN's own pool record, strong inference (classifier 1.3.0)
: Change to ARIN's own pool record, strong inference (classifier 1.3.1)
: Change to ARIN's own pool record, strong inference (classifier 1.3.2)
: Change to ARIN's own pool record, strong inference (classifier 1.4.0) current
2018-04-10ARINNot in ARIN-IssuedRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2018-06-09. 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 2004-11-09) on 2018-04-09 and reserved on 2018-04-11. 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 2018-06-09. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsNot listed in ARIN-Issued; found by comparing ARIN's daily statistics: 206.83.144.0/20 allocated on 2018-04-10, reserved on 2018-04-11source · retrieved
BeforeARIN delegated statistics 2018-04-09 (produced 2018-04-09T05:11:44+00:00), before the report: allocated (dated 2004-11-09)source · retrieved
AfterARIN delegated statistics 2018-04-11 (produced 2018-04-11T05:11:41+00:00), after the report: reservedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
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.