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.
ARIN's transfer log records a transfer from Psychz Networks (ARIN) to Amazon.com, Inc. (ARIN) on 2023-12-06 14:06 UTC. ARIN-Issued lists it as "Add" because the registration changed hands; it is not a new allocation from ARIN.
Evidence (4) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2023-12-06: "Add 23.228.192.0-23.228.255.255"source · retrieved
Transfer logTransfer log: RESOURCE_TRANSFER on 2023-12-06 14:06 UTC, Psychz Networks (ARIN) to Amazon.com, Inc. (ARIN); resources moved: 23.228.192.0/18source · retrieved
BeforeARIN delegated statistics 2023-12-05 (produced 2023-12-05T14:00:34+00:00), before the report: allocated (dated 2013-09-19)source · retrieved
AfterARIN delegated statistics 2023-12-07 (produced 2023-12-07T14:00:34+00:00), after the report: allocated (dated 2023-12-06)source · retrieved
Classification history for this change (4 versions)
: Intra-ARIN transfer, confirmed (classifier 1.4.0) current
2013-09-19ARIN+ AddApparent new issuanceStrong inference
ARIN-Issued
Add 23.228.192.0-23.228.255.255
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it available on 2013-09-18 and allocated (dated 2013-09-19) on 2013-09-20. 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 2013-09-19: "Add 23.228.192.0-23.228.255.255"source · retrieved
BeforeARIN delegated statistics 2013-09-18 (produced 2013-09-18T05:03:24+00:00), before the report: availablesource · retrieved
AfterARIN delegated statistics 2013-09-20 (produced 2013-09-20T05:05:45+00:00), after the report: allocated (dated 2013-09-19)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 (1)
Date (UTC)
Log
Type
Range moved
From
To
ARIN
Resource transfer
23.228.192.0/18
Psychz Networks ARIN
Amazon.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.