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.
2021-06-02APNIC+ RegisteredUnresolved changeObserved only
Statistics
192.52.128.0/20 reserved on 2021-06-02, allocated on 2021-06-03
Inventory
Inventory effect unknown
No transfer record matches. APNIC's statistics show it reserved on 2021-06-02 and allocated (dated 2011-01-24) on 2021-06-03. The new registration isn't dated near that day, so the tracker can't tell whether this is a new issuance.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: 192.52.128.0/20 reserved on 2021-06-02, allocated on 2021-06-03source · retrieved
BeforeAPNIC delegated statistics 2021-06-02, before the change: reservedsource · retrieved
AfterAPNIC delegated statistics 2021-06-03, after the change: allocated (dated 2011-01-24)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
2011-01-24APNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Observed only
Statistics
192.52.128.0/20 allocated on 2011-01-24, not listed on 2011-01-25
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 1989-04-19) on 2011-01-24 and not listed on 2011-01-25. 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: 192.52.128.0/20 allocated on 2011-01-24, not listed on 2011-01-25source · retrieved
BeforeAPNIC delegated statistics 2011-01-24, before the change: allocated (dated 1989-04-19)source · retrieved
AfterAPNIC delegated statistics 2011-01-25, 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
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.