2027-02-10 (from what APNIC's statistics show; it publishes no period)
Now
Possible reissue candidate; not confirmed available.
Timeline (3)
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.
2026-02-10APNIC− DeregisteredRemoved (return, revocation or reclamation not publicly distinguishable)Strong inference
Statistics
57.206.0.0/23 assigned on 2026-02-10, reserved on 2026-02-11
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2027-02-10. 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 assigned (dated 1993-06-21) on 2026-02-10 and reserved on 2026-02-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, but its statistics have released returned IPv4 space a year after the removal or later since 2014, so the tracker estimates the hold ends on 2027-02-10. 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: 57.206.0.0/23 assigned on 2026-02-10, reserved on 2026-02-11source · retrieved
BeforeAPNIC delegated statistics 2026-02-10, before the change: assigned (dated 1993-06-21)source · retrieved
AfterAPNIC delegated statistics 2026-02-11, after the change: reservedsource · retrieved
Classification history for this change (5 versions)
: Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.2.0)
: 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
2022-12-20RIPE NCCTransfer logInter-RIR transfer out of the RIPE NCCConfirmed
Transfer log
Transfer: SITA Switzerland Sarl (RIPE NCC) to (no name) (APNIC)
57.206.0.0/16: the rest of the block stayed with the seller
Inventory
Transferred out of RIPE NCC administration; not offered to RIPE NCC applicants
The RIPE NCC's transfer log records a transfer from SITA Switzerland Sarl (RIPE NCC) to an unnamed organization (APNIC) on 2022-12-20 19:00 UTC: it left the RIPE NCC for APNIC. It is not a new allocation and is not offered to RIPE NCC applicants.
Evidence (3) · classifier 1.4.0,
Transfer logTransfer log: RESOURCE_TRANSFER on 2022-12-20 19:00 UTC, SITA Switzerland Sarl (RIPE NCC) to (no name) (APNIC); resources moved: 57.206.0.0/23source · retrieved
BeforeRIPE NCC delegated statistics 2022-12-19 (produced 2022-12-19T22:59:59+00:00), before the change: assigned (dated 1993-06-21)source · retrieved
AfterRIPE NCC delegated statistics 2022-12-20 (produced 2022-12-20T22:59:59+00:00), after the change: not listedsource · retrieved
Classification history for this change (4 versions)
: Inter-RIR transfer out of the RIPE NCC, confirmed (classifier 1.3.0)
: Inter-RIR transfer out of the RIPE NCC, confirmed (classifier 1.3.1)
: Inter-RIR transfer out of the RIPE NCC, confirmed (classifier 1.3.2)
: Inter-RIR transfer out of the RIPE NCC, confirmed (classifier 1.4.0) current
2022-12-20APNICTransfer logInter-RIR transfer into APNICConfirmed
Transfer log
Transfer: ORG-SSS101-RIPE (RIPE NCC) to Interglobe Aviation Ltd. (APNIC)
From
ORG-SSS101-RIPE RIPE NCC
To
Interglobe Aviation Ltd. APNIC
Same transfer
Also a change at the RIPE NCC, the sending registry: RIPE NCC, 2022-12-20. Lists that cover every registry show it there.
Inventory
Transferred into APNIC administration; not a new issuance
APNIC's transfer log records a transfer from ORG-SSS101-RIPE (RIPE NCC) to Interglobe Aviation Ltd. (APNIC) on 2022-12-20 05:44 UTC: it came to APNIC from the RIPE NCC. It was already issued by another registry, so this is not a new issuance.
Evidence (3) · classifier 1.4.0,
Transfer logTransfer log: RESOURCE_TRANSFER on 2022-12-20 05:44 UTC, ORG-SSS101-RIPE (RIPE NCC) to Interglobe Aviation Ltd. (APNIC); resources moved: 57.206.0.0/23source · retrieved
BeforeAPNIC delegated statistics 2022-12-20, before the change: not listedsource · retrieved
AfterAPNIC delegated statistics 2022-12-21, after the change: assigned (dated 1993-06-21)source · retrieved
Classification history for this change (4 versions)
: Inter-RIR transfer into APNIC, confirmed (classifier 1.3.0)
: Inter-RIR transfer into APNIC, confirmed (classifier 1.3.1)
: Inter-RIR transfer into APNIC, confirmed (classifier 1.3.2)
: Inter-RIR transfer into APNIC, confirmed (classifier 1.4.0) current
Every record in the ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC transfer logs that moved any part of this IPv4 range (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.