2027-10-22 (from what APNIC's statistics show; it publishes no period)
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.
2026-10-22APNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
AS151611 allocated on 2026-10-22, reserved on 2026-10-23
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2027-10-22. Possible reissue candidate after this date; not confirmed available.
Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it allocated (dated 2023-07-12) on 2026-10-22 and reserved on 2026-10-23. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, but its statistics have released returned ASNs a year after the removal or later since 2014, so the tracker estimates the hold ends on 2027-10-22. That is what APNIC has done, not a rule it states. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: AS151611 allocated on 2026-10-22, reserved on 2026-10-23source · retrieved
BeforeAPNIC delegated statistics 2026-10-22, before the change: allocated (dated 2023-07-12)source · retrieved
AfterAPNIC delegated statistics 2026-10-23, after the change: reservedsource · retrieved
2023-07-12APNIC+ RegisteredApparent new issuanceStrong inference
Statistics
AS151611 available on 2023-07-12, allocated on 2023-07-13
Inventory
Likely issued from APNIC-controlled inventory
No transfer record matches. APNIC's statistics show it available on 2023-07-12 and allocated (dated 2023-07-12) on 2023-07-13. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: AS151611 available on 2023-07-12, allocated on 2023-07-13source · retrieved
BeforeAPNIC delegated statistics 2023-07-12, before the change: availablesource · retrieved
AfterAPNIC delegated statistics 2023-07-13, after the change: allocated (dated 2023-07-12)source · retrieved
Classification history for this change (4 versions)
: Apparent new issuance, strong inference (classifier 1.3.0)
: Apparent new issuance, strong inference (classifier 1.3.1)
: Apparent new issuance, strong inference (classifier 1.3.2)
: Apparent new issuance, strong inference (classifier 1.4.0) current