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 Vector Data Systems LLC (ARIN) to Accurant Cloud Services LLC (ARIN) on 2025-10-29 17:45 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 2025-10-29: "Add 173.243.232.0-173.243.235.255"source · retrieved
Transfer logTransfer log: RESOURCE_TRANSFER on 2025-10-29 17:45 UTC, Vector Data Systems LLC (ARIN) to Accurant Cloud Services LLC (ARIN); resources moved: 173.243.232.0/22source · retrieved
BeforeARIN delegated statistics 2025-10-28 (produced 2025-10-28T13:00:47+00:00), before the report: allocated (dated 2019-08-29)source · retrieved
AfterARIN delegated statistics 2025-10-30 (produced 2025-10-30T13:00:48+00:00), after the report: allocated (dated 2025-10-29)source · retrieved
Classification history for this change (4 versions)
: Intra-ARIN transfer, confirmed (classifier 1.4.0) current
2019-08-29ARIN+ AddApparent reissuance of previously removed resourceStrong inference
ARIN-Issued
Add 173.243.232.0-173.243.235.255
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it reserved on 2019-08-28 and allocated (dated 2019-08-29) on 2019-08-30. The tracker saw this range removed from registration on 2018-12-11 (173.243.224.0/20), so it appears to have been issued again from ARIN's pool.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2019-08-29: "Add 173.243.232.0-173.243.235.255"source · retrieved
BeforeARIN delegated statistics 2019-08-28 (produced 2019-08-28T14:00:16+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2019-08-30 (produced 2019-08-30T14:00:17+00:00), after the report: allocated (dated 2019-08-29)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2019-08-29ARIN− RemoveChange to ARIN's own pool recordStrong inference
ARIN-Issued
Remove 173.243.232.0-173.243.235.255
Inventory
Part of the issuance reported the same day
ARIN's statistics show it reserved on 2019-08-28 and allocated (dated 2019-08-29) on 2019-08-30. ARIN removed its own pool record for this range as part of issuing it: the same report adds 173.243.232.0-173.243.235.255. The issuance is explained on that line.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2019-08-29: "Remove 173.243.232.0-173.243.235.255"source · retrieved
BeforeARIN delegated statistics 2019-08-28 (produced 2019-08-28T14:00:16+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2019-08-30 (produced 2019-08-30T14:00:17+00:00), after the report: allocated (dated 2019-08-29)source · retrieved
Classification history for this change (4 versions)
: Change to ARIN's own pool record, strong inference (classifier 1.3.0)
: Change to ARIN's own pool record, strong inference (classifier 1.3.1)
: Change to ARIN's own pool record, strong inference (classifier 1.3.2)
: Change to ARIN's own pool record, strong inference (classifier 1.4.0) current
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.