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 Sarlink Telecom LLC (RIPE NCC) to SarLink LLC (RIPE NCC) on 2023-12-27 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 2023-12-27 19:00 UTC, Sarlink Telecom LLC (RIPE NCC) to SarLink LLC (RIPE NCC); resources moved: AS61971source · retrieved
BeforeRIPE NCC delegated statistics 2023-12-26 (produced 2023-12-26T22:59:59+00:00), before the change: allocated (dated 2017-11-28)source · retrieved
AfterRIPE NCC delegated statistics 2023-12-27 (produced 2023-12-27T22:59:59+00:00), after the change: allocated (dated 2017-11-28)source · retrieved
Classification history for this change (4 versions)
: Intra-RIPE NCC transfer, confirmed (classifier 1.4.0) current
2017-11-28RIPE NCC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
AS61971 available on 2017-11-27, allocated on 2017-11-28
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it available on 2017-11-27 and allocated (dated 2017-11-28) on 2017-11-28. The tracker saw this range released from hold on 2017-11-25 (AS61971), 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: AS61971 available on 2017-11-27, allocated on 2017-11-28source · retrieved
BeforeRIPE NCC delegated statistics 2017-11-27 (produced 2017-11-27T22:59:59+00:00), before the change: availablesource · retrieved
AfterRIPE NCC delegated statistics 2017-11-28 (produced 2017-11-28T22:59:59+00:00), after the change: allocated (dated 2017-11-28)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2017-11-25RIPE NCCReleasedReleased from hold (the RIPE NCC lists it as 'available')Strong inference
Statistics
AS61971 reserved on 2017-11-24, available on 2017-11-25
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed
The RIPE NCC's statistics show it reserved on 2017-11-24 and available on 2017-11-25. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2016-11-25, 365 days earlier. That is the RIPE NCC's own label: whether and when it is reissued is not confirmed.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: AS61971 reserved on 2017-11-24, available on 2017-11-25source · retrieved
BeforeRIPE NCC delegated statistics 2017-11-24 (produced 2017-11-24T22:59:59+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2017-11-25 (produced 2017-11-25T22:59:59+00:00), after the change: availablesource · retrieved
Classification history for this change (4 versions)
: Released from hold (the RIPE NCC lists it as 'available'), strong inference (classifier 1.3.0)
: Released from hold (the RIPE NCC lists it as 'available'), strong inference (classifier 1.3.1)
: Released from hold (the RIPE NCC lists it as 'available'), strong inference (classifier 1.3.2)
: Released from hold (the RIPE NCC lists it as 'available'), strong inference (classifier 1.4.0) current
2016-11-25RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
AS61971 allocated on 2016-11-24, reserved on 2016-11-25
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2017-05-24. Possible reissue candidate after this date; not confirmed available.
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 2014-04-10) on 2016-11-24 and reserved on 2016-11-25. Public sources do not distinguish a voluntary return, revocation, or reclamation. The RIPE NCC holds returned, revoked and reclaimed ASNs for 180 days (six months), or longer while still routed, before reissuing them, so the estimated hold end is 2017-05-24. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: AS61971 allocated on 2016-11-24, reserved on 2016-11-25source · retrieved
BeforeRIPE NCC delegated statistics 2016-11-24 (produced 2016-11-24T22:59:59+00:00), before the change: allocated (dated 2014-04-10)source · retrieved
AfterRIPE NCC delegated statistics 2016-11-25 (produced 2016-11-25T22:59:59+00:00), after the change: 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
2014-04-10RIPE NCC+ RegisteredApparent new issuanceStrong inference
Statistics
AS61971 available on 2014-04-09, allocated on 2014-04-10
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it available on 2014-04-09 and allocated (dated 2014-04-10) on 2014-04-10. 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: AS61971 available on 2014-04-09, allocated on 2014-04-10source · retrieved
BeforeRIPE NCC delegated statistics 2014-04-09 (produced 2014-04-09T21:59:59+00:00), before the change: availablesource · retrieved
AfterRIPE NCC delegated statistics 2014-04-10 (produced 2014-04-10T21:59:59+00:00), after the change: allocated (dated 2014-04-10)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
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.