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.
2025-08-20ARIN+ AddApparent reissuance of previously removed resourceObserved only
ARIN-Issued
Add AS12016
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it reserved on 2025-08-19 and assigned (dated 2025-08-20) on 2025-08-21. The tracker saw this range released from hold on 2025-08-19 (AS12016), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2025-08-19: Remove AS12016), so the before-and-after statistics may include it.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2025-08-20: "Add AS12016"source · retrieved
BeforeARIN delegated statistics 2025-08-19 (produced 2025-08-19T13:00:48+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2025-08-21 (produced 2025-08-21T13:00:50+00:00), after the report: assigned (dated 2025-08-20)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
2025-08-19ARIN− RemoveChange to ARIN's own pool recordObserved only
ARIN-Issued
Remove AS12016
Inventory
Inventory effect unknown
ARIN's statistics show it reserved on 2025-08-18 and assigned (dated 2025-08-20) on 2025-08-20. ARIN removed its own pool record for this range and the range is now registered, but the same report doesn't list it as added. Another change to this range was reported the day before or after (2025-08-20: Add AS12016), so the before-and-after statistics may include it.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2025-08-19: "Remove AS12016"source · retrieved
BeforeARIN delegated statistics 2025-08-18 (produced 2025-08-18T13:00:50+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2025-08-20 (produced 2025-08-20T13:00:51+00:00), after the report: assigned (dated 2025-08-20)source · retrieved
Classification history for this change (4 versions)
: Change to ARIN's own pool record, observed only (classifier 1.3.0)
: Change to ARIN's own pool record, observed only (classifier 1.3.1)
: Change to ARIN's own pool record, observed only (classifier 1.3.2)
: Change to ARIN's own pool record, observed only (classifier 1.4.0) current
2024-11-11ARINNot in ARIN-IssuedRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2025-05-11. 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 2013-06-04) on 2024-11-10 and reserved on 2024-11-12. 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 2025-05-11. This does not confirm availability. Since mid-2024, ARIN has released many ASNs within two months, before the 6 calendar months were up, so the release can come sooner.
Evidence (3) · classifier 1.4.0,
StatisticsNot listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS12016 assigned on 2024-11-11, reserved on 2024-11-12source · retrieved
BeforeARIN delegated statistics 2024-11-10 (produced 2024-11-10T14:00:51+00:00), before the report: assigned (dated 2013-06-04)source · retrieved
AfterARIN delegated statistics 2024-11-12 (produced 2024-11-12T14:00:54+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
2013-03-25ARINNot in ARIN-IssuedRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2013-09-25. 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 1999-03-03) on 2013-03-24 and reserved on 2013-03-26. 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 2013-09-25. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsNot listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS12016 assigned on 2013-03-25, reserved on 2013-03-26source · retrieved
BeforeARIN delegated statistics 2013-03-24 (produced 2013-03-24T15:34:25+00:00), before the report: assigned (dated 1999-03-03)source · retrieved
AfterARIN delegated statistics 2013-03-26 (produced 2013-03-26T05:04:50+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.