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.
2019-08-06LACNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
179.42.144.0/20 allocated on 2019-08-05, reserved on 2019-08-06
Inventory
Possible future reissue candidate after hold
Removed from active registration. The tracker found it by comparing LACNIC's daily statistics. LACNIC's statistics show it allocated (dated 2013-09-04) on 2019-08-05 and reserved on 2019-08-06. Public sources do not distinguish a voluntary return, revocation, or reclamation. LACNIC's current hold for IPv4 space applies to removals from 2020-03-01 on, and this one came earlier, so the tracker gives no estimate. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing LACNIC's daily statistics: 179.42.144.0/20 allocated on 2019-08-05, reserved on 2019-08-06source · retrieved
BeforeLACNIC delegated statistics 2019-08-05, before the change: allocated (dated 2013-09-04)source · retrieved
AfterLACNIC delegated statistics 2019-08-06, after the change: 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
2013-09-04LACNIC+ RegisteredApparent new issuanceStrong inference
Statistics
179.42.144.0/20 available on 2013-09-03, allocated on 2013-09-04
Inventory
Likely issued from LACNIC-controlled inventory
No transfer record matches. LACNIC's statistics show it available on 2013-09-03 and allocated (dated 2013-09-04) on 2013-09-04. It moved from LACNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by LACNIC.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing LACNIC's daily statistics: 179.42.144.0/20 available on 2013-09-03, allocated on 2013-09-04source · retrieved
BeforeLACNIC delegated statistics 2013-09-03, before the change: availablesource · retrieved
AfterLACNIC delegated statistics 2013-09-04, after the change: allocated (dated 2013-09-04)source · retrieved
Classification history for this change (4 versions)
: Apparent new issuance, strong inference (classifier 1.3.0)
: Apparent new issuance, strong inference (classifier 1.3.1)
: Apparent new issuance, strong inference (classifier 1.3.2)
: Apparent new issuance, 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.