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 NetOne, Inc (ARIN) to Guardian Alarm Co of Michigan Inc. (ARIN) on 2025-07-31 10:42 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 2025-07-31: "Add 209.177.76.0-209.177.76.255"source · retrieved
Transfer logTransfer log: RESOURCE_TRANSFER on 2025-07-31 10:42 UTC, NetOne, Inc (ARIN) to Guardian Alarm Co of Michigan Inc. (ARIN); resources moved: 209.177.76.0/24source · retrieved
BeforeARIN delegated statistics 2025-07-30 (produced 2025-07-30T13:00:49+00:00), before the report: allocated (dated 2017-09-11)source · retrieved
AfterARIN delegated statistics 2025-08-01 (produced 2025-08-01T13:00:48+00:00), after the report: allocated (dated 2025-07-31)source · retrieved
Classification history for this change (4 versions)
: Intra-ARIN transfer, confirmed (classifier 1.4.0) current
2017-09-11ARIN+ AddApparent new issuanceStrong inference
ARIN-Issued
Add 209.177.76.0-209.177.76.255
Inventory
Likely issued from ARIN-controlled inventory
No transfer record matches. ARIN's statistics show it reserved on 2017-09-10 and assigned (dated 2017-09-11) on 2017-09-12. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2017-09-11: "Add 209.177.76.0-209.177.76.255"source · retrieved
BeforeARIN delegated statistics 2017-09-10 (produced 2017-09-10T05:10:34+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2017-09-12 (produced 2017-09-12T05:12:03+00:00), after the report: assigned (dated 2017-09-11)source · retrieved
Classification history for this change (4 versions)
: Apparent new issuance, strong inference (classifier 1.4.0) current
2017-09-11ARIN− RemoveChange to ARIN's own pool recordStrong inference
ARIN-Issued
Remove 209.177.76.0-209.177.76.255
Inventory
Part of the issuance reported the same day
ARIN's statistics show it reserved on 2017-09-10 and assigned (dated 2017-09-11) on 2017-09-12. ARIN removed its own pool record for this range as part of issuing it: the same report adds 209.177.76.0-209.177.76.255. The issuance is explained on that line.
Evidence (3) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2017-09-11: "Remove 209.177.76.0-209.177.76.255"source · retrieved
BeforeARIN delegated statistics 2017-09-10 (produced 2017-09-10T05:10:34+00:00), before the report: reservedsource · retrieved
AfterARIN delegated statistics 2017-09-12 (produced 2017-09-12T05:12:03+00:00), after the report: assigned (dated 2017-09-11)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.