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.
2012-08-09RIPE NCC+ RegisteredApparent reissuance of previously removed resourceObserved only
Statistics
193.151.224.0/20 available on 2012-08-08, assigned on 2012-08-09
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it available on 2012-08-08 and assigned (dated 2012-08-09) on 2012-08-09. The tracker saw this range released from hold on 2012-08-08 (193.151.224.0/20), so it appears to have been issued again from the RIPE NCC's pool. Another change to this range was reported the day before or after (2012-08-08: Released 193.151.224.0/20), so the before-and-after statistics may include it.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 193.151.224.0/20 available on 2012-08-08, assigned on 2012-08-09source · retrieved
BeforeRIPE NCC delegated statistics 2012-08-08 (produced 2012-08-08T21:59:59+00:00), before the change: availablesource · retrieved
AfterRIPE NCC delegated statistics 2012-08-09 (produced 2012-08-09T21:59:59+00:00), after the change: assigned (dated 2012-08-09)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, observed only (classifier 1.3.0)
: Apparent reissuance of previously removed resource, observed only (classifier 1.3.1)
: Apparent reissuance of previously removed resource, observed only (classifier 1.3.2)
: Apparent reissuance of previously removed resource, observed only (classifier 1.4.0) current
2012-08-08RIPE NCCReleasedReleased from hold (the RIPE NCC lists it as 'available')Observed only
Statistics
193.151.224.0/20 reserved on 2012-08-07, available on 2012-08-08
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed
The RIPE NCC's statistics show it reserved on 2012-08-07 and available on 2012-08-08. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2012-06-07, 62 days earlier. That is the RIPE NCC's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2012-08-09: Added 193.151.224.0/20), so the before-and-after statistics may include it.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: 193.151.224.0/20 reserved on 2012-08-07, available on 2012-08-08source · retrieved
BeforeRIPE NCC delegated statistics 2012-08-07 (produced 2012-08-07T21:59:59+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2012-08-08 (produced 2012-08-08T21:59:59+00:00), after the change: availablesource · retrieved
Classification history for this change (4 versions)
: Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.0)
: Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.1)
: Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.2)
: Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.4.0) current
Sold in pieces
7 pieces of this block transferred since 2010-04-23, 44% of it so far.
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.