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.
2018-04-27ARIN+ AddApparent reissuance of previously removed resourceStrong inference
ARIN-Issued
Add 161.129.192.0-161.129.223.255
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it reserved on 2018-04-26 and allocated (dated 2018-04-27) on 2018-04-28. The tracker saw this range released from hold on 2018-03-29 (161.129.28.0-161.129.255.255), so it appears to have been issued again from ARIN's pool.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2018-04-27: "Add 161.129.192.0-161.129.223.255"source · retrieved
BeforeARIN delegated statistics 2018-04-26 (produced 2018-04-26T05:11:45+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2018-04-28 (produced 2018-04-28T05:10:47+00:00), after the report: allocated (dated 2018-04-27)source · retrieved
Classification history for this change (4 versions)
: Apparent reissuance of previously removed resource, strong inference (classifier 1.4.0) current
2018-04-27ARIN− RemoveChange to ARIN's own pool recordStrong inference
ARIN-Issued
Remove 161.129.192.0-161.129.223.255
Inventory
Part of the issuance reported the same day
ARIN's statistics show it reserved on 2018-04-26 and allocated (dated 2018-04-27) on 2018-04-28. ARIN removed its own pool record for this range as part of issuing it: the same report adds 161.129.192.0-161.129.223.255. The issuance is explained on that line.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2018-04-27: "Remove 161.129.192.0-161.129.223.255"source · retrieved
BeforeARIN delegated statistics 2018-04-26 (produced 2018-04-26T05:11:45+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2018-04-28 (produced 2018-04-28T05:10:47+00:00), after the report: allocated (dated 2018-04-27)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
Sold in pieces
1 piece of this block transferred since 2008-12-01, 50% of it so far.
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.