APNIC's statistics now list it as 'available'; reissue not confirmed
Hold
Removed
2015-03-02 (APNIC)
Estimated hold end
2016-03-02 (from what APNIC's statistics show; it publishes no period)
Released from hold
2016-06-22
Now
Possible reissue candidate; not confirmed available.
Timeline (3)
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.
2016-06-22APNICReleasedReleased from hold (APNIC lists it as 'available')Strong inference
Statistics
121.54.184.0/21 reserved on 2016-06-22, available on 2016-06-23
Inventory
APNIC's statistics now list it as 'available'; reissue not confirmed
APNIC's statistics show it reserved on 2016-06-22 and available on 2016-06-23. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2015-03-02, 478 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: 121.54.184.0/21 reserved on 2016-06-22, available on 2016-06-23source · retrieved
BeforeAPNIC delegated statistics 2016-06-22, before the change: reservedsource · retrieved
AfterAPNIC delegated statistics 2016-06-23, 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
2015-03-02APNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
121.54.184.0/21 allocated on 2015-03-02, reserved on 2015-03-03
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2016-03-02. Possible reissue candidate after this date; not confirmed available.
Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it allocated (dated 2010-12-24) on 2015-03-02 and reserved on 2015-03-03. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, but its statistics have released returned IPv4 space a year after the removal or later since 2014, so the tracker estimates the hold ends on 2016-03-02. That is what APNIC has done, not a rule it states. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: 121.54.184.0/21 allocated on 2015-03-02, reserved on 2015-03-03source · retrieved
BeforeAPNIC delegated statistics 2015-03-02, before the change: allocated (dated 2010-12-24)source · retrieved
AfterAPNIC delegated statistics 2015-03-03, 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
2010-12-24APNIC+ RegisteredUnresolved changeObserved only
Statistics
121.54.184.0/21 not listed on 2010-12-24, allocated on 2010-12-25
Inventory
Inventory effect unknown
No transfer record matches. APNIC's statistics show it not listed on 2010-12-24 and allocated (dated 2010-12-24) on 2010-12-25. 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: 121.54.184.0/21 not listed on 2010-12-24, allocated on 2010-12-25source · retrieved
BeforeAPNIC delegated statistics 2010-12-24, before the change: not listedsource · retrieved
AfterAPNIC delegated statistics 2010-12-25, after the change: allocated (dated 2010-12-24)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
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.