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.
2025-10-31APNIC+ RegisteredRestored to the same holderStrong inference
Statistics
AS4857 available on 2025-10-31, allocated on 2025-11-01
Inventory
No effect on APNIC applicant inventory
No transfer record matches. APNIC's statistics show it available on 2025-10-31 and allocated (dated 2009-11-10) on 2025-11-01. The tracker saw it removed from registration on 2025-10-27 (4 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: AS4857 available on 2025-10-31, allocated on 2025-11-01source · retrieved
BeforeAPNIC delegated statistics 2025-10-31, before the change: availablesource · retrieved
AfterAPNIC delegated statistics 2025-11-01, after the change: allocated (dated 2009-11-10)source · retrieved
Classification history for this change (4 versions)
: Restored to the same holder, strong inference (classifier 1.3.0)
: Restored to the same holder, strong inference (classifier 1.3.1)
: Restored to the same holder, strong inference (classifier 1.3.2)
: Restored to the same holder, strong inference (classifier 1.4.0) current
2025-10-27APNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
AS4857 allocated on 2025-10-27, available on 2025-10-28
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2026-10-27. 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 2009-11-10) on 2025-10-27 and available on 2025-10-28. 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 2026-10-27. 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: AS4857 allocated on 2025-10-27, available on 2025-10-28source · retrieved
BeforeAPNIC delegated statistics 2025-10-27, before the change: allocated (dated 2009-11-10)source · retrieved
AfterAPNIC delegated statistics 2025-10-28, 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
2023-12-14APNIC+ RegisteredRestored to the same holderStrong inference
Statistics
AS4857 available on 2023-12-14, allocated on 2023-12-15
Inventory
No effect on APNIC applicant inventory
No transfer record matches. APNIC's statistics show it available on 2023-12-14 and allocated (dated 2009-11-10) on 2023-12-15. The tracker saw it removed from registration on 2023-12-12 (2 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: AS4857 available on 2023-12-14, allocated on 2023-12-15source · retrieved
BeforeAPNIC delegated statistics 2023-12-14, before the change: availablesource · retrieved
AfterAPNIC delegated statistics 2023-12-15, after the change: allocated (dated 2009-11-10)source · retrieved
Classification history for this change (4 versions)
: Restored to the same holder, strong inference (classifier 1.3.0)
: Restored to the same holder, strong inference (classifier 1.3.1)
: Restored to the same holder, strong inference (classifier 1.3.2)
: Restored to the same holder, strong inference (classifier 1.4.0) current
2023-12-12APNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
AS4857 allocated on 2023-12-12, available on 2023-12-13
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2024-12-12. 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 2009-11-10) on 2023-12-12 and available on 2023-12-13. 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 2024-12-12. 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: AS4857 allocated on 2023-12-12, available on 2023-12-13source · retrieved
BeforeAPNIC delegated statistics 2023-12-12, before the change: allocated (dated 2009-11-10)source · retrieved
AfterAPNIC delegated statistics 2023-12-13, 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
2009-11-10APNIC+ RegisteredUnresolved changeObserved only
Statistics
AS4857 not listed on 2009-11-10, allocated on 2009-11-11
Inventory
Inventory effect unknown
No transfer record matches. APNIC's statistics show it not listed on 2009-11-10 and allocated (dated 2009-11-10) on 2009-11-11. 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: AS4857 not listed on 2009-11-10, allocated on 2009-11-11source · retrieved
BeforeAPNIC delegated statistics 2009-11-10, before the change: not listedsource · retrieved
AfterAPNIC delegated statistics 2009-11-11, after the change: allocated (dated 2009-11-10)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
2009-11-04APNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Observed only
Statistics
AS4857 allocated on 2009-11-04, not listed on 2009-11-05
Inventory
Possible future reissue candidate after hold
Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it allocated (dated 2005-09-07) on 2009-11-04 and not listed on 2009-11-05. Being gone from APNIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, and its statistics show a steady one (a year) only for removals from 2014-07-01 on; this one came earlier, so the tracker gives no estimate. This does not confirm availability.
Evidence (3) · classifier 1.4.0,
StatisticsFound by comparing APNIC's daily statistics: AS4857 allocated on 2009-11-04, not listed on 2009-11-05source · retrieved
BeforeAPNIC delegated statistics 2009-11-04, before the change: allocated (dated 2005-09-07)source · retrieved
AfterAPNIC delegated statistics 2009-11-05, after the change: not listedsource · retrieved
Classification history for this change (4 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.3.0)
: Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.3.1)
: Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.3.2)
: Removed (return, revocation or reclamation not publicly distinguishable), 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.