Not estimated: APNIC's observed hold applies to removals from 2014-07-01 on, and this one came earlier
Now
Possible reissue candidate; not confirmed available.
Timeline (2)
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.
2011-12-06APNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
2001:dfb:1::/48 assigned on 2011-12-06, reserved on 2011-12-07
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 assigned (dated 2011-06-01) on 2011-12-06 and reserved on 2011-12-07. 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: 2001:dfb:1::/48 assigned on 2011-12-06, reserved on 2011-12-07source · retrieved
BeforeAPNIC delegated statistics 2011-12-06, before the change: assigned (dated 2011-06-01)source · retrieved
AfterAPNIC delegated statistics 2011-12-07, after the change: reservedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
2011-06-01APNIC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
2001:dfb:1::/48 available on 2011-06-01, assigned on 2011-06-02
Inventory
Likely issued from APNIC-controlled inventory
No transfer record matches. APNIC's statistics show it available on 2011-06-01 and assigned (dated 2011-06-01) on 2011-06-02. The tracker saw this range removed from registration on 2009-11-19 (2001:dfb::/32), so it appears to have been issued again from APNIC's pool.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: 2001:dfb:1::/48 available on 2011-06-01, assigned on 2011-06-02source · retrieved
BeforeAPNIC delegated statistics 2011-06-01, before the change: availablesource · retrieved
AfterAPNIC delegated statistics 2011-06-02, after the change: assigned (dated 2011-06-01)source · retrieved
Classification history for this change (4 versions)
No transfer log has a transfer of any part of this IPv6 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.