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.
The RIPE NCC's transfer log records a transfer from FOP Trubnikov Valeriy Muhaylovich (RIPE NCC) to Level-Msk Ltd. (RIPE NCC) on 2017-03-29 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC.
Evidence (3) · classifier 1.4.0,
Transfer logTransfer log: RESOURCE_TRANSFER on 2017-03-29 19:00 UTC, FOP Trubnikov Valeriy Muhaylovich (RIPE NCC) to Level-Msk Ltd. (RIPE NCC); resources moved: AS52091source · retrieved
BeforeRIPE NCC delegated statistics 2017-03-28 (produced 2017-03-28T21:59:59+00:00), before the change: allocated (dated 2011-04-15)source · retrieved
AfterRIPE NCC delegated statistics 2017-03-29 (produced 2017-03-29T21:59:59+00:00), after the change: allocated (dated 2011-04-15)source · retrieved
Classification history for this change (4 versions)
: Intra-RIPE NCC transfer, confirmed (classifier 1.4.0) current
2011-04-16RIPE NCC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
AS52091 available on 2011-04-15, allocated on 2011-04-16
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it available on 2011-04-15 and allocated (dated 2011-04-15) on 2011-04-16. The tracker saw this range removed from registration on 2011-01-15 (AS52091), so it appears to have been issued again from the RIPE NCC's pool.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: AS52091 available on 2011-04-15, allocated on 2011-04-16source · retrieved
BeforeRIPE NCC delegated statistics 2011-04-15, before the change: availablesource · retrieved
AfterRIPE NCC delegated statistics 2011-04-16, after the change: allocated (dated 2011-04-15)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2011-01-15RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
AS52091 allocated on 2011-01-14, available on 2011-01-15
Inventory
Possible future reissue candidate after hold
Removed from active registration. The tracker found it by comparing the RIPE NCC's daily statistics. The RIPE NCC's statistics show it allocated (dated 2010-12-27) on 2011-01-14 and available on 2011-01-15. Public sources do not distinguish a voluntary return, revocation, or reclamation. The RIPE NCC's current hold for ASNs applies to removals from 2014-03-26 on, and this one came earlier, so the tracker gives no estimate. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: AS52091 allocated on 2011-01-14, available on 2011-01-15source · retrieved
BeforeRIPE NCC delegated statistics 2011-01-14, before the change: allocated (dated 2010-12-27)source · retrieved
AfterRIPE NCC delegated statistics 2011-01-15, 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
2010-12-28RIPE NCC+ RegisteredApparent new issuanceStrong inference
Statistics
AS52091 available on 2010-12-27, allocated on 2010-12-28
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it available on 2010-12-27 and allocated (dated 2010-12-27) on 2010-12-28. It moved from the RIPE NCC's unissued pool to an active registration dated around that day, so it appears to be newly issued by the RIPE NCC.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: AS52091 available on 2010-12-27, allocated on 2010-12-28source · retrieved
BeforeRIPE NCC delegated statistics 2010-12-27, before the change: availablesource · retrieved
AfterRIPE NCC delegated statistics 2010-12-28, after the change: allocated (dated 2010-12-27)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
Transfer records (1)
Date (UTC)
Log
Type
Range moved
From
To
RIPE NCC
Resource transfer
AS52091
FOP Trubnikov Valeriy Muhaylovich RIPE NCC
Level-Msk Ltd. RIPE NCC
Every record in the ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC transfer logs that moved any part of this ASN (ARIN's from 2009, the RIPE NCC's from 2012, APNIC's from 2010, LACNIC's from 2016, AFRINIC's from 2018). A transfer between two registries is in both logs.
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.