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.
2012-10-10RIPE NCC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
151.216.18.0/23 reserved on 2012-10-09, assigned on 2012-10-10
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it reserved on 2012-10-09 and assigned (dated 2012-10-10) on 2012-10-10. The tracker saw this range removed from registration on 2012-07-25 (151.216.16.0/20), 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: 151.216.18.0/23 reserved on 2012-10-09, assigned on 2012-10-10source · retrieved
BeforeRIPE NCC delegated statistics 2012-10-09 (produced 2012-10-09T21:59:59+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2012-10-10 (produced 2012-10-10T21:59:59+00:00), after the change: assigned (dated 2012-10-10)source · retrieved
Classification history for this change (4 versions)
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.