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.
2015-08-11ARIN+ AddApparent new issuanceObserved only
ARIN-Issued
Add 192.203.0.0-192.203.0.255
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it reserved on 2015-08-10 and allocated (dated 2015-08-11) on 2015-08-12. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN. Another change to this range was reported the day before or after (2015-08-10: Remove 192.203.0.0-192.203.0.255), so the before-and-after statistics may include it.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2015-08-11: "Add 192.203.0.0-192.203.0.255"source · retrieved
BeforeARIN delegated statistics 2015-08-10 (produced 2015-08-10T05:05:19+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2015-08-12 (produced 2015-08-12T05:05:26+00:00), after the report: allocated (dated 2015-08-11)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, observed only (classifier 1.3.0)
: Apparent reissuance of previously removed resource, observed only (classifier 1.3.1)
: Apparent reissuance of previously removed resource, observed only (classifier 1.3.2)
: Apparent new issuance, observed only (classifier 1.4.0) current
2015-08-10ARIN− RemoveReleased from hold (ARIN lists it as 'available')Observed only
ARIN-Issued
Remove 192.203.0.0-192.203.0.255
Inventory
ARIN's statistics now list it as 'available'; reissue not confirmed
ARIN's statistics show it reserved on 2015-08-09 and available on 2015-08-11. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. That is ARIN's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2015-08-11: Add 192.203.0.0-192.203.0.255), so the before-and-after statistics may include it.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2015-08-10: "Remove 192.203.0.0-192.203.0.255"source · retrieved
BeforeARIN delegated statistics 2015-08-09 (produced 2015-08-09T05:05:18+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2015-08-11 (produced 2015-08-11T05:05:34+00:00), after the report: availablesource · retrieved
Classification history for this change (4 versions)
: Released from hold (ARIN lists it as 'available'), observed only (classifier 1.3.0)
: Released from hold (ARIN lists it as 'available'), observed only (classifier 1.3.1)
: Released from hold (ARIN lists it as 'available'), observed only (classifier 1.3.2)
: Released from hold (ARIN lists it as 'available'), observed only (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.