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.
2022-10-10ARINNot in ARIN-IssuedRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2022-12-09. 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 2019-04-19) on 2022-10-09 and reserved on 2022-10-11. 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 2022-12-09. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsNot listed in ARIN-Issued; found by comparing ARIN's daily statistics: 72.21.24.0/21 allocated on 2022-10-10, reserved on 2022-10-11source · retrieved
BeforeARIN delegated statistics 2022-10-09 (produced 2022-10-09T13:00:10+00:00), before the report: allocated (dated 2019-04-19)source · retrieved
AfterARIN delegated statistics 2022-10-11 (produced 2022-10-11T13:00:10+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
ARIN's transfer log records a transfer from Colo Solutions Group, LLC (ARIN) to IO INC (ARIN) on 2019-04-19 12:36 UTC. ARIN-Issued lists it as "Add" because the registration changed hands; it is not a new allocation from ARIN.
Evidence (4) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2019-04-19: "Add 72.21.24.0-72.21.31.255"source · retrieved
Transfer logTransfer log: RESOURCE_TRANSFER on 2019-04-19 12:36 UTC, Colo Solutions Group, LLC (ARIN) to IO INC (ARIN); resources moved: 72.21.24.0/21source · retrieved
BeforeARIN delegated statistics 2019-04-18 (produced 2019-04-18T05:00:11+00:00), before the report: allocated (dated 2004-12-03)source · retrieved
AfterARIN delegated statistics 2019-04-20 (produced 2019-04-20T05:00:12+00:00), after the report: allocated (dated 2019-04-19)source · retrieved
Classification history for this change (4 versions)
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.