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.
2011-12-15RIPE NCC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
37.10.0.0/17 available on 2011-12-14, allocated on 2011-12-15
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it available on 2011-12-14 and allocated (dated 2011-12-15) on 2011-12-15. The tracker saw this range removed from registration on 2011-07-06 (37.0.0.0/10), so it appears to have been issued again from the RIPE NCC's pool.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 37.10.0.0/17 available on 2011-12-14, allocated on 2011-12-15source · retrieved
BeforeRIPE NCC delegated statistics 2011-12-14 (produced 2011-12-14T22:59:59+00:00), before the change: availablesource · retrieved
AfterRIPE NCC delegated statistics 2011-12-15 (produced 2011-12-15T22:59:59+00:00), after the change: allocated (dated 2011-12-15)source · retrieved
Classification history for this change (4 versions)
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.