rirtracker

ASN

AS51356

Now

APNIC statistics
Reserved, in the latest file
Registry
APNIC
Holder
None: it's in the registry's own pool
From
APNIC's latest statistics

Latest change

− Deregistered Removed (return, revocation or reclamation not publicly distinguishable)

Reported
2026-11-02 (APNIC)
Confidence
Strong inference
Inventory
Possible future reissue candidate after hold

Hold

Removed
2026-11-02 (APNIC)
Estimated hold end
2027-11-02 (from what APNIC's statistics show; it publishes no period)
Released from hold
2019-09-01
Now
Possible reissue candidate; not confirmed available.

Timeline (7)

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.

2026-11-02 APNIC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
AS51356 allocated on 2026-11-02, reserved on 2026-11-03
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2027-11-02. 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 2019-09-02) on 2026-11-02 and reserved on 2026-11-03. 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 2027-11-02. That is what APNIC has done, not a rule it states. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing APNIC's daily statistics: AS51356 allocated on 2026-11-02, reserved on 2026-11-03 source · retrieved
  2. Before APNIC delegated statistics 2026-11-02, before the change: allocated (dated 2019-09-02) source · retrieved
  3. After APNIC delegated statistics 2026-11-03, after the change: reserved source · retrieved
2021-12-09 RIPE NCC Transfer log Inter-RIR transfer out of the RIPE NCC Confirmed
Transfer log
Transfer: Eezee Pte Ltd (RIPE NCC) to (no name) (APNIC)
From
Eezee Pte Ltd RIPE NCC
To
(no name given) APNIC
Same transfer
APNIC recorded it too: APNIC, 2021-12-09.
Inventory
Transferred out of RIPE NCC administration; not offered to RIPE NCC applicants

The RIPE NCC's transfer log records a transfer from Eezee Pte Ltd (RIPE NCC) to an unnamed organization (APNIC) on 2021-12-09 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,
  1. Transfer log Transfer log: RESOURCE_TRANSFER on 2021-12-09 19:00 UTC, Eezee Pte Ltd (RIPE NCC) to (no name) (APNIC); resources moved: AS51356 source · retrieved
  2. Before RIPE NCC delegated statistics 2021-12-08 (produced 2021-12-08T22:59:00+00:00), before the change: allocated (dated 2019-09-02) source · retrieved
  3. After RIPE NCC delegated statistics 2021-12-09 (produced 2021-12-09T22:59:00+00:00), after the change: not listed source · retrieved
Classification history for this change (4 versions)
  1. : Inter-RIR transfer out of the RIPE NCC, confirmed (classifier 1.3.0)
  2. : Inter-RIR transfer out of the RIPE NCC, confirmed (classifier 1.3.1)
  3. : Inter-RIR transfer out of the RIPE NCC, confirmed (classifier 1.3.2)
  4. : Inter-RIR transfer out of the RIPE NCC, confirmed (classifier 1.4.0) current
2021-12-09 APNIC Transfer log Inter-RIR transfer into APNIC Confirmed
Transfer log
Transfer: sg-eezee (RIPE NCC) to Soon Keat Neo (APNIC)
From
sg-eezee RIPE NCC
To
Soon Keat Neo APNIC
Same transfer
Also a change at the RIPE NCC, the sending registry: RIPE NCC, 2021-12-09. 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 sg-eezee (RIPE NCC) to Soon Keat Neo (APNIC) on 2021-12-09 06:30 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,
  1. Transfer log Transfer log: RESOURCE_TRANSFER on 2021-12-09 06:30 UTC, sg-eezee (RIPE NCC) to Soon Keat Neo (APNIC); resources moved: AS51356, 45.129.228.0/22 source · retrieved
  2. Before APNIC delegated statistics 2021-12-09, before the change: not listed source · retrieved
  3. After APNIC delegated statistics 2021-12-10, after the change: allocated (dated 2019-09-02) source · retrieved
Classification history for this change (4 versions)
  1. : Inter-RIR transfer into APNIC, confirmed (classifier 1.3.0)
  2. : Inter-RIR transfer into APNIC, confirmed (classifier 1.3.1)
  3. : Inter-RIR transfer into APNIC, confirmed (classifier 1.3.2)
  4. : Inter-RIR transfer into APNIC, confirmed (classifier 1.4.0) current
2019-09-02 RIPE NCC + Registered Apparent reissuance of previously removed resource Observed only
Statistics
AS51356 available on 2019-09-01, allocated on 2019-09-02
Inventory
Likely issued from RIPE NCC-controlled inventory

No transfer record matches. The RIPE NCC's statistics show it available on 2019-09-01 and allocated (dated 2019-09-02) on 2019-09-02. The tracker saw this range released from hold on 2019-09-01 (AS51356), 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 (2019-09-01: Released AS51356), so the before-and-after statistics may include it.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: AS51356 available on 2019-09-01, allocated on 2019-09-02 source · retrieved
  2. Before RIPE NCC delegated statistics 2019-09-01 (produced 2019-09-01T21:59:59+00:00), before the change: available source · retrieved
  3. After RIPE NCC delegated statistics 2019-09-02 (produced 2019-09-02T21:59:59+00:00), after the change: allocated (dated 2019-09-02) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent reissuance of previously removed resource, observed only (classifier 1.3.0)
  2. : Apparent reissuance of previously removed resource, observed only (classifier 1.3.1)
  3. : Apparent reissuance of previously removed resource, observed only (classifier 1.3.2)
  4. : Apparent reissuance of previously removed resource, observed only (classifier 1.4.0) current
2019-09-01 RIPE NCC Released Released from hold (the RIPE NCC lists it as 'available') Observed only
Statistics
AS51356 reserved on 2019-08-31, available on 2019-09-01
Inventory
The RIPE NCC's statistics now list it as 'available'; reissue not confirmed

The RIPE NCC's statistics show it reserved on 2019-08-31 and available on 2019-09-01. The RIPE NCC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2019-03-05, 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 (2019-09-02: Added AS51356), so the before-and-after statistics may include it.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: AS51356 reserved on 2019-08-31, available on 2019-09-01 source · retrieved
  2. Before RIPE NCC delegated statistics 2019-08-31 (produced 2019-08-31T21:59:59+00:00), before the change: reserved source · retrieved
  3. After RIPE NCC delegated statistics 2019-09-01 (produced 2019-09-01T21:59:59+00:00), after the change: available source · retrieved
Classification history for this change (4 versions)
  1. : Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.0)
  2. : Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.1)
  3. : Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.3.2)
  4. : Released from hold (the RIPE NCC lists it as 'available'), observed only (classifier 1.4.0) current
2019-03-05 RIPE NCC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Strong inference
Statistics
AS51356 allocated on 2019-03-04, reserved on 2019-03-05
Inventory
Possible future reissue candidate after hold
Hold estimate
Estimated hold end 2019-09-01. 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 2010-07-30) on 2019-03-04 and reserved on 2019-03-05. 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 2019-09-01. This does not confirm availability.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: AS51356 allocated on 2019-03-04, reserved on 2019-03-05 source · retrieved
  2. Before RIPE NCC delegated statistics 2019-03-04 (produced 2019-03-04T22:59:59+00:00), before the change: allocated (dated 2010-07-30) source · retrieved
  3. After RIPE NCC delegated statistics 2019-03-05 (produced 2019-03-05T22:59:59+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
2010-07-31 RIPE NCC + Registered Apparent new issuance Strong inference
Statistics
AS51356 available on 2010-07-30, allocated on 2010-07-31
Inventory
Likely issued from RIPE NCC-controlled inventory

No transfer record matches. The RIPE NCC's statistics show it available on 2010-07-30 and allocated (dated 2010-07-30) on 2010-07-31. It moved from the RIPE NCC's unissued pool to an active registration dated around that day, so it appears to be newly issued by the RIPE NCC.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing the RIPE NCC's daily statistics: AS51356 available on 2010-07-30, allocated on 2010-07-31 source · retrieved
  2. Before RIPE NCC delegated statistics 2010-07-30, before the change: available source · retrieved
  3. After RIPE NCC delegated statistics 2010-07-31, after the change: allocated (dated 2010-07-30) source · retrieved
Classification history for this change (4 versions)
  1. : Apparent new issuance, strong inference (classifier 1.3.0)
  2. : Apparent new issuance, strong inference (classifier 1.3.1)
  3. : Apparent new issuance, strong inference (classifier 1.3.2)
  4. : Apparent new issuance, strong inference (classifier 1.4.0) current

Transfer records (2)

Date (UTC)LogTypeRange movedFromTo
RIPE NCCResource transferAS51356 Eezee Pte Ltd RIPE NCC(no name given) APNIC
APNICResource transferAS51356 sg-eezee RIPE NCCSoon Keat Neo APNIC

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/51356.json