rirtracker

IPv4 range · 65,536 addresses

143.171.0.0/16

Now

ARIN statistics
Allocated (dated 2024-12-03) (US), in the latest file
Registry
ARIN
Holder
AMAZO-4
From
ARIN's latest statistics and the latest transfer record

Latest change

Transfer log Inter-RIR transfer out of APNIC

Reported
2024-12-04 (APNIC)
Confidence
Confirmed
Inventory
Transferred out of APNIC administration; not offered to APNIC applicants

Timeline (4)

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.

2024-12-04 APNIC Transfer log Inter-RIR transfer out of APNIC Confirmed
Transfer log
Transfer: Net One Systems Co.Ltd. (APNIC) to AMAZO-4 (ARIN)
From
Net One Systems Co.Ltd. APNIC
To
AMAZO-4 ARIN
Same transfer
ARIN recorded it too: ARIN, 2024-12-03.
Inventory
Transferred out of APNIC administration; not offered to APNIC applicants

APNIC's transfer log records a transfer from Net One Systems Co.Ltd. (APNIC) to AMAZO-4 (ARIN) on 2024-12-04 02:26 UTC: it left APNIC for ARIN. It is not a new allocation and is not offered to APNIC applicants.

Evidence (3) · classifier 1.4.0,
  1. Transfer log Transfer log: RESOURCE_TRANSFER on 2024-12-04 02:26 UTC, Net One Systems Co.Ltd. (APNIC) to AMAZO-4 (ARIN); resources moved: 143.171.0.0/16, 143.221.0.0/16, 143.253.0.0/16 source · retrieved
  2. Before APNIC delegated statistics 2024-12-04, before the change: allocated (dated 2011-02-17) source · retrieved
  3. After APNIC delegated statistics 2024-12-05, after the change: not listed source · retrieved
Classification history for this change (4 versions)
  1. : Inter-RIR transfer out of APNIC, confirmed (classifier 1.3.0)
  2. : Inter-RIR transfer out of APNIC, confirmed (classifier 1.3.1)
  3. : Inter-RIR transfer out of APNIC, confirmed (classifier 1.3.2)
  4. : Inter-RIR transfer out of APNIC, confirmed (classifier 1.4.0) current
2024-12-03 ARIN + Add Inter-RIR transfer into ARIN Confirmed
ARIN-Issued
Add 143.171.0.0-143.171.255.255
From
Net One Systems Co. Ltd. APNIC
To
Amazon.com, Inc. ARIN
Same transfer
Also a change at APNIC, the sending registry: APNIC, 2024-12-04. Lists that cover every registry show it there.
Inventory
Transferred into ARIN administration; not a new issuance

ARIN's transfer log records a transfer from Net One Systems Co. Ltd. (APNIC) to Amazon.com, Inc. (ARIN) on 2024-12-03 19:53 UTC: it came to ARIN from APNIC. It was already issued by another registry, so this is not a new issuance.

Evidence (4) · classifier 1.4.0,
  1. ARIN-Issued ARIN-Issued report for 2024-12-03: "Add 143.171.0.0-143.171.255.255" source · retrieved
  2. Transfer log Transfer log: RESOURCE_TRANSFER on 2024-12-03 19:53 UTC, Net One Systems Co. Ltd. (APNIC) to Amazon.com, Inc. (ARIN); resources moved: 143.171.0.0/16 source · retrieved
  3. Before ARIN delegated statistics 2024-12-02 (produced 2024-12-02T14:01:06+00:00), before the report: not listed source · retrieved
  4. After ARIN delegated statistics 2024-12-04 (produced 2024-12-04T14:01:07+00:00), after the report: allocated (dated 2024-12-03) source · retrieved
Classification history for this change (4 versions)
  1. : Inter-RIR transfer into ARIN, confirmed (classifier 1.3.0)
  2. : Inter-RIR transfer into ARIN, confirmed (classifier 1.3.1)
  3. : Inter-RIR transfer into ARIN, confirmed (classifier 1.3.2)
  4. : Inter-RIR transfer into ARIN, confirmed (classifier 1.4.0) current
2024-05-10 APNIC + Registered Unresolved change Observed only
Statistics
143.171.0.0/16 reserved on 2024-05-10, allocated on 2024-05-11
Inventory
Inventory effect unknown

No transfer record matches. APNIC's statistics show it reserved on 2024-05-10 and allocated (dated 2011-02-17) on 2024-05-11. The new registration isn't dated near that day, so the tracker can't tell whether this is a new issuance.

Evidence (3) · classifier 1.4.0,
  1. Statistics Found by comparing APNIC's daily statistics: 143.171.0.0/16 reserved on 2024-05-10, allocated on 2024-05-11 source · retrieved
  2. Before APNIC delegated statistics 2024-05-10, before the change: reserved source · retrieved
  3. After APNIC delegated statistics 2024-05-11, after the change: allocated (dated 2011-02-17) source · retrieved
Classification history for this change (4 versions)
  1. : Unresolved change, observed only (classifier 1.3.0)
  2. : Unresolved change, observed only (classifier 1.3.1)
  3. : Unresolved change, observed only (classifier 1.3.2)
  4. : Unresolved change, observed only (classifier 1.4.0) current
2011-02-17 APNIC − Deregistered Removed (return, revocation or reclamation not publicly distinguishable) Observed only
Statistics
143.171.0.0/16 allocated on 2011-02-17, not listed on 2011-02-18
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 1990-09-26) on 2011-02-17 and not listed on 2011-02-18. 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,
  1. Statistics Found by comparing APNIC's daily statistics: 143.171.0.0/16 allocated on 2011-02-17, not listed on 2011-02-18 source · retrieved
  2. Before APNIC delegated statistics 2011-02-17, before the change: allocated (dated 1990-09-26) source · retrieved
  3. After APNIC delegated statistics 2011-02-18, after the change: not listed source · retrieved
Classification history for this change (4 versions)
  1. : Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.3.0)
  2. : Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.3.1)
  3. : Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.3.2)
  4. : Removed (return, revocation or reclamation not publicly distinguishable), observed only (classifier 1.4.0) current

Transfer records (2)

Date (UTC)LogTypeRange movedFromTo
APNICResource transfer143.171.0.0/16 Net One Systems Co.Ltd. APNICAMAZO-4 ARIN
ARINResource transfer143.171.0.0/16 Net One Systems Co. Ltd. APNICAmazon.com, Inc. ARIN

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.

This page as data: ip/143.171.0.0-143.171.255.255.json