APNIC's statistics now list it as 'available'; reissue not confirmed
Timeline (2)
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.
2015-10-28APNICReleasedReleased from hold (APNIC lists it as 'available')Strong inference
Statistics
115.31.64.0/20 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 2014-06-24, 491 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: 115.31.64.0/20 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
2008-07-08APNIC+ RegisteredUnresolved changeObserved only
Statistics
115.31.64.0/20 not listed on 2008-07-08, allocated on 2008-07-09
Inventory
Inventory effect unknown
No transfer record matches. APNIC's statistics show it not listed on 2008-07-08 and allocated (dated 2008-07-08) on 2008-07-09. 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: 115.31.64.0/20 not listed on 2008-07-08, allocated on 2008-07-09source · retrieved
BeforeAPNIC delegated statistics 2008-07-08, before the change: not listedsource · retrieved
AfterAPNIC delegated statistics 2008-07-09, after the change: allocated (dated 2008-07-08)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
China Internet Network Information Center/GDYS APNIC
China Internet Network Information Center/WSUNET APNIC
APNIC
Resource transfer
115.31.72.0/22
China Internet Network Information Center/GWBN-WEINAN APNIC
China Internet Network Information Center/DXTNET APNIC
APNIC
Resource transfer
115.31.76.0/22
China Internet Network Information Center/GWBN-XIAOGAN APNIC
China Internet Network Information Center/DXTNET APNIC
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.