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.
2010-06-10APNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Observed only
Statistics
27.255.0.0/16 allocated on 2010-06-10, not listed on 2010-06-11
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 allocated (dated 2010-01-22) on 2010-06-10 and not listed on 2010-06-11. Being gone from APNIC's statistics entirely can also mean it moved to another registry. 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: 27.255.0.0/16 allocated on 2010-06-10, not listed on 2010-06-11source · retrieved
BeforeAPNIC delegated statistics 2010-06-10, before the change: allocated (dated 2010-01-22)source · retrieved
AfterAPNIC delegated statistics 2010-06-11, after the change: not listedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.4.0) current
2010-01-22APNIC+ RegisteredUnresolved changeObserved only
Statistics
27.255.0.0/16 not listed on 2010-01-22, allocated on 2010-01-23
Inventory
Inventory effect unknown
No transfer record matches. APNIC's statistics show it not listed on 2010-01-22 and allocated (dated 2010-01-22) on 2010-01-23. 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: 27.255.0.0/16 not listed on 2010-01-22, allocated on 2010-01-23source · retrieved
BeforeAPNIC delegated statistics 2010-01-22, before the change: not listedsource · retrieved
AfterAPNIC delegated statistics 2010-01-23, after the change: allocated (dated 2010-01-22)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.