rirtracker

ASN

AS43537

Now

RIPE NCC statistics
Available, in the latest file
Registry
RIPE NCC
Holder
None: it's in the registry's own pool
From
The RIPE NCC's latest statistics

Latest change

Released Released from hold (the RIPE NCC lists it as 'available')

Reported
2026-10-14 (RIPE NCC)
Confidence
Strong inference
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed

Hold

Removed
2025-10-14 (RIPE NCC)
Estimated hold end
2026-04-12 (from the RIPE NCC's published rule; or later while it's still routed)
Released from hold
2026-10-14
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.

2026-10-14 RIPE NCC Released Released from hold (the RIPE NCC lists it as 'available') Strong inference
Statistics
AS43537 reserved on 2026-10-13, available on 2026-10-14
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed

The RIPE NCC's statistics show it reserved on 2026-10-13 and available on 2026-10-14. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2025-10-14, 365 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,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: AS43537 reserved on 2026-10-13, available on 2026-10-14 source · retrieved
  2. Before RIPE NCC delegated statistics 2026-10-13 (produced 2026-10-13T21:59:59+00:00), before the change: reserved source · retrieved
  3. After RIPE NCC delegated statistics 2026-10-14 (produced 2026-10-14T21:59:59+00:00), after the change: available source · retrieved
2025-10-14 RIPE NCC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
AS43537 allocated on 2025-10-13, reserved on 2025-10-14
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2026-04-12. 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 2007-08-17) on 2025-10-13 and reserved on 2025-10-14. 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 2026-04-12. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: AS43537 allocated on 2025-10-13, reserved on 2025-10-14 source · retrieved
  2. Before RIPE NCC delegated statistics 2025-10-13 (produced 2025-10-13T21:59:59+00:00), before the change: allocated (dated 2007-08-17) source · retrieved
  3. After RIPE NCC delegated statistics 2025-10-14 (produced 2025-10-14T21:59:59+00:00), after the change: reserved source · retrieved
Classification history for this change (4 versions)
  1. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.0)
  2. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.1)
  3. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.3.2)
  4. : Removed (return, revocation or reclamation not publicly distinguishable), strong inference (classifier 1.4.0) current
2022-04-22 RIPE NCC Transfer log Intra-RIPE NCC transfer Confirmed
Transfer log
Transfer: OOO Intelcom-network (RIPE NCC) to OOO WestCall Ltd. (RIPE NCC)
From
OOO Intelcom-network RIPE NCC
To
OOO WestCall Ltd. RIPE NCC
Inventory
No effect on RIPE NCC applicant inventory

The RIPE NCC's transfer log records a transfer from OOO Intelcom-network (RIPE NCC) to OOO WestCall Ltd. (RIPE NCC) on 2022-04-22 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC.

Evidence (3) · classifier 1.4.0,
  1. Transfer log Transfer log: RESOURCE_TRANSFER on 2022-04-22 19:00 UTC, OOO Intelcom-network (RIPE NCC) to OOO WestCall Ltd. (RIPE NCC); resources moved: AS43537 source · retrieved
  2. Before RIPE NCC delegated statistics 2022-04-21 (produced 2022-04-21T21:59:00+00:00), before the change: allocated (dated 2007-08-17) source · retrieved
  3. After RIPE NCC delegated statistics 2022-04-22 (produced 2022-04-22T21:59:00+00:00), after the change: allocated (dated 2007-08-17) source · retrieved
Classification history for this change (4 versions)
  1. : Intra-RIPE NCC transfer, confirmed (classifier 1.3.0)
  2. : Intra-RIPE NCC transfer, confirmed (classifier 1.3.1)
  3. : Intra-RIPE NCC transfer, confirmed (classifier 1.3.2)
  4. : Intra-RIPE NCC transfer, confirmed (classifier 1.4.0) current

Transfer records (1)

Date (UTC)LogTypeRange movedFromTo
RIPE NCCResource transferAS43537 OOO Intelcom-network RIPE NCCOOO WestCall Ltd. RIPE NCC

Every record in the ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC transfer logs that moved any part of this ASN (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

Looked upWhyRegistryHandleOrganizationStatusLast 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.

This page as data: asn/43537.json