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 B2 Net Solutions Inc. (ARIN) to Amazon.com, Inc. (ARIN) on 2023-07-14 19:11 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 2023-07-14: "Add 138.128.0.0-138.128.127.255"source · retrieved
Transfer logTransfer log: RESOURCE_TRANSFER on 2023-07-14 19:11 UTC, B2 Net Solutions Inc. (ARIN) to Amazon.com, Inc. (ARIN); resources moved: 138.128.0.0/17source · retrieved
BeforeARIN delegated statistics 2023-07-13 (produced 2023-07-13T13:00:10+00:00), before the report: allocated (dated 2014-04-29)source · retrieved
AfterARIN delegated statistics 2023-07-15 (produced 2023-07-15T13:00:10+00:00), after the report: allocated (dated 2023-07-14)source · retrieved
Classification history for this change (4 versions)
: Intra-ARIN transfer, confirmed (classifier 1.4.0) current
2014-04-29ARIN+ AddApparent new issuanceStrong inference
ARIN-Issued
Add 138.128.0.0-138.128.127.255
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it available on 2014-04-28 and allocated (dated 2014-04-29) on 2014-04-30. 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 2014-04-29: "Add 138.128.0.0-138.128.127.255"source · retrieved
BeforeARIN delegated statistics 2014-04-28 (produced 2014-04-28T05:03:41+00:00), before the report: availablesource · retrieved
AfterARIN delegated statistics 2014-04-30 (produced 2014-04-30T05:03:50+00:00), after the report: allocated (dated 2014-04-29)source · retrieved
Classification history for this change (4 versions)
: Apparent new issuance, strong inference (classifier 1.4.0) current
2009-09-14ARIN− RemoveUnresolved changeObserved only
ARIN-Issued
Remove 138.128.0.0-138.128.127.255
Inventory
Inventory effect unknown
ARIN-Issued says "Remove", but ARIN's statistics show it not issued on 2009-09-13 and not issued on 2009-09-15. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2009-09-14: "Remove 138.128.0.0-138.128.127.255"source · retrieved
BeforeARIN delegated statistics 2009-09-13, before the report: not issuedsource · retrieved
AfterARIN delegated statistics 2009-09-15, after the report: not issuedsource · retrieved
Classification history for this change (4 versions)
: Unresolved change, observed only (classifier 1.3.0)
: Unresolved change, observed only (classifier 1.3.1)
: Unresolved change, observed only (classifier 1.3.2)
: Unresolved change, observed only (classifier 1.4.0) current
Transfer records (1)
Date (UTC)
Log
Type
Range moved
From
To
ARIN
Resource transfer
138.128.0.0/17
B2 Net Solutions Inc. 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.