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.
2018-01-29ARIN+ AddApparent new issuanceStrong inference
ARIN-Issued
Add 172.83.204.0-172.83.204.255
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it reserved on 2018-01-28 and assigned (dated 2018-01-29) on 2018-01-30. 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 2018-01-29: "Add 172.83.204.0-172.83.204.255"source · retrieved
BeforeARIN delegated statistics 2018-01-28 (produced 2018-01-28T06:10:09+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2018-01-30 (produced 2018-01-30T06:10:01+00:00), after the report: assigned (dated 2018-01-29)source · retrieved
Classification history for this change (4 versions)
: Apparent new issuance, strong inference (classifier 1.4.0) current
2018-01-29ARIN− RemoveChange to ARIN's own pool recordStrong inference
ARIN-Issued
Remove 172.83.204.0-172.83.204.255
Inventory
Part of the issuance reported the same day
ARIN's statistics show it reserved on 2018-01-28 and assigned (dated 2018-01-29) on 2018-01-30. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.83.204.0-172.83.204.255. The issuance is explained on that line.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2018-01-29: "Remove 172.83.204.0-172.83.204.255"source · retrieved
BeforeARIN delegated statistics 2018-01-28 (produced 2018-01-28T06:10:09+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2018-01-30 (produced 2018-01-30T06:10:01+00:00), after the report: assigned (dated 2018-01-29)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
ARIN-Issued lists it as "Remove", but ARIN's statistics show the same record before and after (reserved).
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2018-01-15: "Remove 172.83.204.0-172.83.204.255"source · retrieved
BeforeARIN delegated statistics 2018-01-14 (produced 2018-01-14T06:10:46+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2018-01-16 (produced 2018-01-16T06:09:57+00:00), after the report: reservedsource · retrieved
Classification history for this change (4 versions)
: No substantive resource change found, strong inference (classifier 1.3.0)
: No substantive resource change found, strong inference (classifier 1.3.1)
: No substantive resource change found, strong inference (classifier 1.3.2)
: No substantive resource change found, strong inference (classifier 1.4.0) current
Transfer records
No transfer log has a transfer of any part of this IPv4 range.
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.