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.
2023-02-21ARIN+ AddApparent reissuance of previously removed resourceStrong inference
ARIN-Issued
Add AS16661
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it reserved on 2023-02-20 and assigned (dated 2023-02-21) on 2023-02-22. The tracker saw this range removed from registration on 2020-11-09 (AS16661), so it appears to have been issued again from ARIN's pool.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2023-02-21: "Add AS16661"source · retrieved
BeforeARIN delegated statistics 2023-02-20 (produced 2023-02-20T14:00:11+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2023-02-22 (produced 2023-02-22T14:00:10+00:00), after the report: assigned (dated 2023-02-21)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2023-02-21ARIN− RemoveChange to ARIN's own pool recordStrong inference
ARIN-Issued
Remove AS16661
Inventory
Part of the issuance reported the same day
ARIN's statistics show it reserved on 2023-02-20 and assigned (dated 2023-02-21) on 2023-02-22. ARIN removed its own pool record for this range as part of issuing it: the same report adds AS16661. The issuance is explained on that line.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2023-02-21: "Remove AS16661"source · retrieved
BeforeARIN delegated statistics 2023-02-20 (produced 2023-02-20T14:00:11+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2023-02-22 (produced 2023-02-22T14:00:10+00:00), after the report: assigned (dated 2023-02-21)source · retrieved
Classification history for this change (4 versions)
: Change to ARIN's own pool record, strong inference (classifier 1.3.0)
: Change to ARIN's own pool record, strong inference (classifier 1.3.1)
: Change to ARIN's own pool record, strong inference (classifier 1.3.2)
: Change to ARIN's own pool record, strong inference (classifier 1.4.0) current
2020-11-09ARINNot in ARIN-IssuedRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2021-05-09. 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 2012-06-14) on 2020-11-08 and reserved on 2020-11-10. 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 2021-05-09. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsNot listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS16661 assigned on 2020-11-09, reserved on 2020-11-10source · retrieved
BeforeARIN delegated statistics 2020-11-08 (produced 2020-11-08T15:00:13+00:00), before the report: assigned (dated 2012-06-14)source · retrieved
AfterARIN delegated statistics 2020-11-10 (produced 2020-11-10T15:00:13+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
2011-12-07ARINNot in ARIN-IssuedRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2012-06-07. 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 allocated (dated 2000-05-15) on 2011-12-06 and not issued on 2011-12-08. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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 2012-06-07. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsNot listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS16661 allocated on 2011-12-07, not listed on 2011-12-08source · retrieved
BeforeARIN delegated statistics 2011-12-06, before the report: allocated (dated 2000-05-15)source · retrieved
AfterARIN delegated statistics 2011-12-08, after the report: not issuedsource · 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.