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.
2011-10-10ARIN− RemoveUnresolved changeObserved only
ARIN-Issued
Remove 199.16.36.0-199.16.63.255
Inventory
Inventory effect unknown
ARIN-Issued says "Remove", but ARIN's statistics show it not issued on 2011-10-09 and allocated (dated 2011-10-10), not issued on 2011-10-11. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed. Another change to this range was reported the day before or after (2011-10-11: Add 199.16.60.0-199.16.63.255), so the before-and-after statistics may include it.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2011-10-10: "Remove 199.16.36.0-199.16.63.255"source · retrieved
BeforeARIN delegated statistics 2011-10-09, before the report: not issuedsource · retrieved
AfterARIN delegated statistics 2011-10-11, after the report: allocated (dated 2011-10-10), not issuedsource · 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.