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.
2023-03-15RIPE NCC+ RegisteredApparent reissuance of previously removed resourceStrong inference
Statistics
AS51330 available on 2023-03-14, allocated on 2023-03-15
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it available on 2023-03-14 and allocated (dated 2023-03-15) on 2023-03-15. The tracker saw this range released from hold on 2023-03-13 (AS51330), 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: AS51330 available on 2023-03-14, allocated on 2023-03-15source · retrieved
BeforeRIPE NCC delegated statistics 2023-03-14 (produced 2023-03-14T22:59:59+00:00), before the change: availablesource · retrieved
AfterRIPE NCC delegated statistics 2023-03-15 (produced 2023-03-15T22:59:59+00:00), after the change: allocated (dated 2023-03-15)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2023-03-13RIPE NCCReleasedReleased from hold (the RIPE NCC lists it as 'available')Strong inference
Statistics
AS51330 reserved on 2023-03-12, available on 2023-03-13
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed
The RIPE NCC's statistics show it reserved on 2023-03-12 and available on 2023-03-13. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2022-09-14, 180 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: AS51330 reserved on 2023-03-12, available on 2023-03-13source · retrieved
BeforeRIPE NCC delegated statistics 2023-03-12 (produced 2023-03-12T22:59:59+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2023-03-13 (produced 2023-03-13T22:59:59+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
2022-09-14RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
AS51330 allocated on 2022-09-13, reserved on 2022-09-14
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2023-03-13. 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 2010-07-26) on 2022-09-13 and reserved on 2022-09-14. 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 2023-03-13. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: AS51330 allocated on 2022-09-13, reserved on 2022-09-14source · retrieved
BeforeRIPE NCC delegated statistics 2022-09-13 (produced 2022-09-13T21:59:59+00:00), before the change: allocated (dated 2010-07-26)source · retrieved
AfterRIPE NCC delegated statistics 2022-09-14 (produced 2022-09-14T21:59:59+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
2010-07-27RIPE NCC+ RegisteredApparent new issuanceStrong inference
Statistics
AS51330 available on 2010-07-26, allocated on 2010-07-27
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it available on 2010-07-26 and allocated (dated 2010-07-26) on 2010-07-27. 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: AS51330 available on 2010-07-26, allocated on 2010-07-27source · retrieved
BeforeRIPE NCC delegated statistics 2010-07-26, before the change: availablesource · retrieved
AfterRIPE NCC delegated statistics 2010-07-27, after the change: allocated (dated 2010-07-26)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
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.