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.
2018-04-16ARIN+ AddApparent reissuance of previously removed resourceStrong inference
ARIN-Issued
Add AS19841
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it available on 2018-04-15 and assigned (dated 2018-04-16) on 2018-04-17. The tracker saw this range released from hold on 2018-04-13 (AS19841), so it appears to have been issued again from ARIN's pool.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2018-04-16: "Add AS19841"source · retrieved
BeforeARIN delegated statistics 2018-04-15 (produced 2018-04-15T05:10:04+00:00), before the report: availablesource · retrieved
AfterARIN delegated statistics 2018-04-17 (produced 2018-04-17T05:10:48+00:00), after the report: assigned (dated 2018-04-16)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2018-04-13ARIN− RemoveReleased from hold (ARIN lists it as 'available')Strong inference
ARIN-Issued
Remove AS19841
Inventory
ARIN's statistics now list it as 'available'; reissue not confirmed
ARIN's statistics show it reserved on 2018-04-12 and available on 2018-04-14. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. The tracker saw it removed from registration on 2017-04-24, 354 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2018-04-13: "Remove AS19841"source · retrieved
BeforeARIN delegated statistics 2018-04-12 (produced 2018-04-12T05:09:29+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2018-04-14 (produced 2018-04-14T05:08:56+00:00), after the report: availablesource · retrieved
Classification history for this change (4 versions)
: Released from hold (ARIN lists it as 'available'), strong inference (classifier 1.3.0)
: Released from hold (ARIN lists it as 'available'), strong inference (classifier 1.3.1)
: Released from hold (ARIN lists it as 'available'), strong inference (classifier 1.3.2)
: Released from hold (ARIN lists it as 'available'), strong inference (classifier 1.4.0) current
2017-04-24ARINNot in ARIN-IssuedRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2017-10-24. Possible reissue candidate after this date; not confirmed available.
Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2001-02-21) on 2017-04-23 and reserved on 2017-04-25. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the estimated hold end is 2017-10-24. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsNot listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS19841 assigned on 2017-04-24, reserved on 2017-04-25source · retrieved
BeforeARIN delegated statistics 2017-04-23 (produced 2017-04-23T05:11:30+00:00), before the report: assigned (dated 2001-02-21)source · retrieved
AfterARIN delegated statistics 2017-04-25 (produced 2017-04-25T05:10:06+00:00), after the report: 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
Transfer records
No transfer log has a transfer of any part of this ASN.
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.