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.
2026-11-09ARINNot in ARIN-IssuedRemoved (return, revocation or reclamation not publicly distinguishable)Strong inferenceProvisional
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2027-05-09. Possible reissue candidate after this date; not confirmed available.
Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2016-06-07) on 2026-11-08 and reserved on 2026-11-10. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the estimated hold end is 2027-05-09. This does not confirm availability. Since mid-2024, ARIN has released many ASNs within two months, before the 6 calendar months were up, so the release can come sooner.
Evidence (3) · classifier 1.4.0,
StatisticsNot listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS395252 assigned on 2026-11-09, reserved on 2026-11-10source · retrieved
BeforeARIN delegated statistics 2026-11-08 (produced 2026-11-08T14:00:21+00:00), before the report: assigned (dated 2016-06-07)source · retrieved
AfterARIN delegated statistics 2026-11-10 (produced 2026-11-10T14:00:21+00:00), after the report: reservedsource · retrieved
2016-06-07ARIN+ AddApparent new issuanceStrong inference
ARIN-Issued
Add AS395252
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it available on 2016-06-06 and assigned (dated 2016-06-07) on 2016-06-08. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2016-06-07: "Add AS395252"source · retrieved
BeforeARIN delegated statistics 2016-06-06 (produced 2016-06-06T05:04:32+00:00), before the report: availablesource · retrieved
AfterARIN delegated statistics 2016-06-08 (produced 2016-06-08T05:04:16+00:00), after the report: assigned (dated 2016-06-07)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
Looked up
Why
Registry
Handle
Organization
Status
Last changed
After 24 hours
ARIN
AS395252
Stamford Hospital SH-416
active
2026-11-10
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.