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.
2021-01-06ARIN+ AddApparent reissuance of previously removed resourceObserved only
ARIN-Issued
Add 172.99.196.0-172.99.199.255
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it reserved on 2021-01-05 and allocated (dated 2021-01-06) on 2021-01-07. The tracker saw this range released from hold on 2021-01-05 (172.99.128.0-172.99.255.255), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2021-01-05: Remove 172.99.128.0-172.99.255.255), so the before-and-after statistics may include it.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2021-01-06: "Add 172.99.196.0-172.99.199.255"source · retrieved
BeforeARIN delegated statistics 2021-01-05 (produced 2021-01-05T15:00:13+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2021-01-07 (produced 2021-01-07T15:00:13+00:00), after the report: allocated (dated 2021-01-06)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 reissuance of previously removed resource, observed only (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.