Possible reissue candidate; not confirmed available.
Timeline (4)
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.
2026-10-28RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
AS50497 allocated on 2026-10-27, reserved on 2026-10-28
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2027-04-26. 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 2020-12-14) on 2026-10-27 and reserved on 2026-10-28. 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 2027-04-26. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: AS50497 allocated on 2026-10-27, reserved on 2026-10-28source · retrieved
BeforeRIPE NCC delegated statistics 2026-10-27 (produced 2026-10-27T22:59:59+00:00), before the change: allocated (dated 2020-12-14)source · retrieved
AfterRIPE NCC delegated statistics 2026-10-28 (produced 2026-10-28T22:59:59+00:00), after the change: reservedsource · retrieved
2020-12-14RIPE NCC+ RegisteredApparent reissuance of previously removed resourceObserved only
Statistics
AS50497 available on 2020-12-13, allocated on 2020-12-14
Inventory
Likely issued from RIPE NCC-controlled inventory
No transfer record matches. The RIPE NCC's statistics show it available on 2020-12-13 and allocated (dated 2020-12-14) on 2020-12-14. The tracker saw this range released from hold on 2020-12-13 (AS50497), so it appears to have been issued again from the RIPE NCC's pool. Another change to this range was reported the day before or after (2020-12-13: Released AS50497), so the before-and-after statistics may include it.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: AS50497 available on 2020-12-13, allocated on 2020-12-14source · retrieved
BeforeRIPE NCC delegated statistics 2020-12-13 (produced 2020-12-13T22:59:00+00:00), before the change: availablesource · retrieved
AfterRIPE NCC delegated statistics 2020-12-14 (produced 2020-12-14T22:59:00+00:00), after the change: allocated (dated 2020-12-14)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, observed only (classifier 1.3.0)
: Apparent reissuance of previously removed resource, observed only (classifier 1.3.1)
: Apparent reissuance of previously removed resource, observed only (classifier 1.3.2)
: Apparent reissuance of previously removed resource, observed only (classifier 1.4.0) current
2020-12-13RIPE NCCReleasedReleased from hold (the RIPE NCC lists it as 'available')Observed only
Statistics
AS50497 reserved on 2020-12-12, available on 2020-12-13
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed
The RIPE NCC's statistics show it reserved on 2020-12-12 and available on 2020-12-13. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2020-06-16, 180 days earlier. That is the RIPE NCC's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2020-12-14: Added AS50497), so the before-and-after statistics may include it.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: AS50497 reserved on 2020-12-12, available on 2020-12-13source · retrieved
BeforeRIPE NCC delegated statistics 2020-12-12 (produced 2020-12-12T22:59:00+00:00), before the change: reservedsource · retrieved
AfterRIPE NCC delegated statistics 2020-12-13 (produced 2020-12-13T22:59:00+00:00), after the change: availablesource · retrieved
Classification history for this change (4 versions)
: Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.0)
: Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.1)
: Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.2)
: Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.4.0) current
2020-06-16RIPE NCC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
AS50497 allocated on 2020-06-15, reserved on 2020-06-16
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2020-12-13. 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 2010-01-29) on 2020-06-15 and reserved on 2020-06-16. 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 2020-12-13. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing the RIPE NCC's daily statistics: AS50497 allocated on 2020-06-15, reserved on 2020-06-16source · retrieved
BeforeRIPE NCC delegated statistics 2020-06-15 (produced 2020-06-15T21:59:59+00:00), before the change: allocated (dated 2010-01-29)source · retrieved
AfterRIPE NCC delegated statistics 2020-06-16 (produced 2020-06-16T21:59:59+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
Transfer records
No transfer log has a transfer of any part of this ASN.
RDAP lookups
Looked up
Why
Registry
Handle
Organization
Status
Last changed
After 7 days
not registered (RDAP 404)
After 24 hours
not registered (RDAP 404)
First seen
not registered (RDAP 404)
Organization-level details only; contact details are never kept. RDAP shows the registration when it was looked up, not in the past.