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.
2018-03-30ARIN− RemoveChange to ARIN's own pool recordStrong inference
ARIN-Issued
Remove 204.9.88.0-204.9.95.255
Inventory
Part of the issuance reported the same day
ARIN's statistics show it reserved on 2018-03-29 and allocated (dated 2018-03-30), reserved on 2018-03-31. ARIN removed its own pool record for this range as part of issuing it: the same report adds 204.9.88.0-204.9.88.255, 204.9.92.0-204.9.95.255. The issuance is explained on those lines.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2018-03-30: "Remove 204.9.88.0-204.9.95.255"source · retrieved
BeforeARIN delegated statistics 2018-03-29 (produced 2018-03-29T05:11:28+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2018-03-31 (produced 2018-03-31T05:11:02+00:00), after the report: allocated (dated 2018-03-30), 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
2015-10-13ARINNot in ARIN-IssuedRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2015-12-12. 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 2004-09-30) on 2015-10-12 and reserved on 2015-10-14. 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 2015-12-12. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsNot listed in ARIN-Issued; found by comparing ARIN's daily statistics: 204.9.88.0/21 assigned on 2015-10-13, reserved on 2015-10-14source · retrieved
BeforeARIN delegated statistics 2015-10-12 (produced 2015-10-12T05:05:25+00:00), before the report: assigned (dated 2004-09-30)source · retrieved
AfterARIN delegated statistics 2015-10-14 (produced 2015-10-14T05:05:38+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
Every record in the ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC transfer logs that moved any part of this IPv4 range (ARIN's from 2009, the RIPE NCC's from 2012, APNIC's from 2010, LACNIC's from 2016, AFRINIC's from 2018). A transfer between two registries is in both logs.
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.