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.
2016-02-11APNIC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
203.123.56.0/23 available on 2016-02-11, assigned on 2016-02-12
Inventory
Likely issued from APNIC-controlled inventory
No transfer record matches. APNIC's statistics show it available on 2016-02-11 and assigned (dated 2016-02-11) on 2016-02-12. The tracker saw this range released from hold on 2015-10-28 (203.123.56.0/23), so it appears to have been issued again from APNIC's pool.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: 203.123.56.0/23 available on 2016-02-11, assigned on 2016-02-12source · retrieved
BeforeAPNIC delegated statistics 2016-02-11, before the change: availablesource · retrieved
AfterAPNIC delegated statistics 2016-02-12, after the change: assigned (dated 2016-02-11)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2015-10-28APNICReleasedReleased from hold (APNIC lists it as 'available')Strong inference
Statistics
203.123.56.0/23 reserved on 2015-10-28, available on 2015-10-29
Inventory
APNIC's statistics now list it as 'available'; reissue not confirmed
APNIC's statistics show it reserved on 2015-10-28 and available on 2015-10-29. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2013-05-02, 909 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: 203.123.56.0/23 reserved on 2015-10-28, available on 2015-10-29source · retrieved
BeforeAPNIC delegated statistics 2015-10-28, before the change: reservedsource · retrieved
AfterAPNIC delegated statistics 2015-10-29, after the change: availablesource · retrieved
Classification history for this change (4 versions)
: Released from hold (APNIC lists it as 'available'), strong inference (classifier 1.3.0)
: Released from hold (APNIC lists it as 'available'), strong inference (classifier 1.3.1)
: Released from hold (APNIC lists it as 'available'), strong inference (classifier 1.3.2)
: Released from hold (APNIC lists it as 'available'), strong inference (classifier 1.4.0) current
2013-05-02APNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
203.123.56.0/23 assigned on 2013-05-02, reserved on 2013-05-03
Inventory
Possible future reissue candidate after hold
Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it assigned (dated 2008-03-03) on 2013-05-02 and reserved on 2013-05-03. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, and its statistics show a steady one (a year) only for removals from 2014-07-01 on; this one came earlier, so the tracker gives no estimate. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: 203.123.56.0/23 assigned on 2013-05-02, reserved on 2013-05-03source · retrieved
BeforeAPNIC delegated statistics 2013-05-02, before the change: assigned (dated 2008-03-03)source · retrieved
AfterAPNIC delegated statistics 2013-05-03, 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
2008-03-03APNIC+ RegisteredUnresolved changeObserved only
Statistics
203.123.56.0/23 not listed on 2008-03-03, assigned on 2008-03-04
Inventory
Inventory effect unknown
No transfer record matches. APNIC's statistics show it not listed on 2008-03-03 and assigned (dated 2008-03-03) on 2008-03-04. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: 203.123.56.0/23 not listed on 2008-03-03, assigned on 2008-03-04source · retrieved
BeforeAPNIC delegated statistics 2008-03-03, before the change: not listedsource · retrieved
AfterAPNIC delegated statistics 2008-03-04, after the change: assigned (dated 2008-03-03)source · retrieved
Classification history for this change (4 versions)
: Unresolved change, observed only (classifier 1.3.0)
: Unresolved change, observed only (classifier 1.3.1)
: Unresolved change, observed only (classifier 1.3.2)
: Unresolved change, observed only (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.