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 DuPont Specialty Products USA LLC (ARIN) to BL Networks (ARIN), recorded as 2 transfer records that together cover exactly this range, on 2021-08-09 14:08 UTC. ARIN-Issued lists it as "Add" because the registration changed hands; it is not a new allocation from ARIN.
Evidence (5) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2021-08-09: "Add 193.149.189.0-193.149.190.255"source · retrieved
Transfer logTransfer log: RESOURCE_TRANSFER on 2021-08-09 14:08 UTC, DuPont Specialty Products USA LLC (ARIN) to BL Networks (ARIN); resources moved: 193.149.189.0/24source · retrieved
Transfer logTransfer log: RESOURCE_TRANSFER on 2021-08-09 14:08 UTC, DuPont Specialty Products USA LLC (ARIN) to BL Networks (ARIN); resources moved: 193.149.190.0/24source · retrieved
BeforeARIN delegated statistics 2021-08-08 (produced 2021-08-08T14:00:13+00:00), before the report: assigned (dated 2021-06-16)source · retrieved
AfterARIN delegated statistics 2021-08-10 (produced 2021-08-10T14:00:14+00:00), after the report: allocated (dated 2021-08-09)source · retrieved
Classification history for this change (4 versions)
: Intra-ARIN transfer, confirmed (classifier 1.4.0) current
2021-06-16ARIN+ AddInter-RIR transfer into ARINConfirmed
ARIN-Issued
Add 193.149.189.0-193.149.190.255
From
DUPONT NUTRITION BIOSCIENCES ApS RIPE NCC
To
DuPont Specialty Products USA LLC ARIN
Same transfer
Also a change at the RIPE NCC, the sending registry: RIPE NCC, 2021-06-16. Lists that cover every registry show it there.
Inventory
Transferred into ARIN administration; not a new issuance
ARIN's transfer log records a transfer from DUPONT NUTRITION BIOSCIENCES ApS (RIPE NCC) to DuPont Specialty Products USA LLC (ARIN), recorded as 2 transfer records that together cover exactly this range, on 2021-06-16 14:19 UTC: it came to ARIN from the RIPE NCC. It was already issued by another registry, so this is not a new issuance.
Evidence (5) · classifier 1.4.0,
ARIN-IssuedARIN-Issued report for 2021-06-16: "Add 193.149.189.0-193.149.190.255"source · retrieved
Transfer logTransfer log: RESOURCE_TRANSFER on 2021-06-16 14:19 UTC, DUPONT NUTRITION BIOSCIENCES ApS (RIPE NCC) to DuPont Specialty Products USA LLC (ARIN); resources moved: 193.149.189.0/24source · retrieved
Transfer logTransfer log: RESOURCE_TRANSFER on 2021-06-16 14:19 UTC, DUPONT NUTRITION BIOSCIENCES ApS (RIPE NCC) to DuPont Specialty Products USA LLC (ARIN); resources moved: 193.149.190.0/24source · retrieved
BeforeARIN delegated statistics 2021-06-15 (produced 2021-06-15T14:00:13+00:00), before the report: not listedsource · retrieved
AfterARIN delegated statistics 2021-06-17 (produced 2021-06-17T14:00:13+00:00), after the report: assigned (dated 2021-06-16)source · retrieved
Classification history for this change (4 versions)
: Inter-RIR transfer into ARIN, confirmed (classifier 1.3.0)
: Inter-RIR transfer into ARIN, confirmed (classifier 1.3.1)
: Inter-RIR transfer into ARIN, confirmed (classifier 1.3.2)
: Inter-RIR transfer into ARIN, confirmed (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.