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.
2018-06-19APNIC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
AS23942 available on 2018-06-19, allocated on 2018-06-20
Inventory
Likely issued from APNIC-controlled inventory
No transfer record matches. APNIC's statistics show it available on 2018-06-19 and allocated (dated 2018-06-19) on 2018-06-20. The tracker saw this range removed from registration on 2015-08-18 (AS23942), 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: AS23942 available on 2018-06-19, allocated on 2018-06-20source · retrieved
BeforeAPNIC delegated statistics 2018-06-19, before the change: availablesource · retrieved
AfterAPNIC delegated statistics 2018-06-20, after the change: allocated (dated 2018-06-19)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2015-08-18APNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
AS23942 allocated on 2015-08-18, available on 2015-08-19
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2016-08-18. 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 2008-05-27) on 2015-08-18 and available on 2015-08-19. 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 2016-08-18. 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: AS23942 allocated on 2015-08-18, available on 2015-08-19source · retrieved
BeforeAPNIC delegated statistics 2015-08-18, before the change: allocated (dated 2008-05-27)source · retrieved
AfterAPNIC delegated statistics 2015-08-19, after the change: availablesource · 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
2008-05-27APNIC+ RegisteredUnresolved changeObserved only
Statistics
AS23942 not listed on 2008-05-27, allocated on 2008-05-28
Inventory
Inventory effect unknown
No transfer record matches. APNIC's statistics show it not listed on 2008-05-27 and allocated (dated 2008-05-27) on 2008-05-28. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: AS23942 not listed on 2008-05-27, allocated on 2008-05-28source · retrieved
BeforeAPNIC delegated statistics 2008-05-27, before the change: not listedsource · retrieved
AfterAPNIC delegated statistics 2008-05-28, after the change: allocated (dated 2008-05-27)source · retrieved
Classification history for this change (4 versions)
: Unresolved change, observed only (classifier 1.3.0)
: Unresolved change, observed only (classifier 1.3.1)
: Unresolved change, observed only (classifier 1.3.2)
: Unresolved change, observed only (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.