rirtracker

IPv4 range · 4,096 addresses

91.123.0.0/20

Now

RIPE NCC statistics
Allocated (dated 2006-11-28) (NL), in the latest file
Registry
RIPE NCC
Holder
Terrence de Kat
From
The RIPE NCC's latest statistics and the latest transfer record

Latest change

Transfer log Intra-RIPE NCC transfer

Reported
2025-10-31 (RIPE NCC)
Confidence
Confirmed
Inventory
No effect on RIPE NCC applicant inventory

Timeline (2)

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.

2025-10-31 RIPE NCC Transfer log Intra-RIPE NCC transfer Confirmed
Transfer log
Transfer: Roberscheuten B.V. (RIPE NCC) to Terrence de Kat (RIPE NCC)
From
Roberscheuten B.V. RIPE NCC
To
Terrence de Kat RIPE NCC
Inventory
No effect on RIPE NCC applicant inventory

The RIPE NCC's transfer log records a transfer from Roberscheuten B.V. (RIPE NCC) to Terrence de Kat (RIPE NCC) on 2025-10-31 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC.

Evidence (3) · classifier 1.4.0,
  1. Transfer log Transfer log: RESOURCE_TRANSFER on 2025-10-31 19:00 UTC, Roberscheuten B.V. (RIPE NCC) to Terrence de Kat (RIPE NCC); resources moved: 91.123.0.0/20 source · retrieved
  2. Before RIPE NCC delegated statistics 2025-10-30 (produced 2025-10-30T22:59:59+00:00), before the change: allocated (dated 2006-11-28) source · retrieved
  3. After RIPE NCC delegated statistics 2025-10-31 (produced 2025-10-31T22:59:59+00:00), after the change: allocated (dated 2006-11-28) source · retrieved
Classification history for this change (4 versions)
  1. : Intra-RIPE NCC transfer, confirmed (classifier 1.3.0)
  2. : Intra-RIPE NCC transfer, confirmed (classifier 1.3.1)
  3. : Intra-RIPE NCC transfer, confirmed (classifier 1.3.2)
  4. : Intra-RIPE NCC transfer, confirmed (classifier 1.4.0) current
2021-08-09 RIPE NCC Transfer log Intra-RIPE NCC transfer Confirmed
Transfer log
Transfer: TENNET TELECOM SRL (RIPE NCC) to Roberscheuten B.V. (RIPE NCC)
From
TENNET TELECOM SRL RIPE NCC
To
Roberscheuten B.V. RIPE NCC
Inventory
No effect on RIPE NCC applicant inventory

The RIPE NCC's transfer log records a transfer from TENNET TELECOM SRL (RIPE NCC) to Roberscheuten B.V. (RIPE NCC) on 2021-08-09 19:00 UTC. The registration changed hands; it is not a new allocation from the RIPE NCC.

Evidence (3) · classifier 1.4.0,
  1. Transfer log Transfer log: RESOURCE_TRANSFER on 2021-08-09 19:00 UTC, TENNET TELECOM SRL (RIPE NCC) to Roberscheuten B.V. (RIPE NCC); resources moved: 91.123.0.0/20 source · retrieved
  2. Before RIPE NCC delegated statistics 2021-08-08 (produced 2021-08-08T21:59:00+00:00), before the change: assigned (dated 2006-11-28) source · retrieved
  3. After RIPE NCC delegated statistics 2021-08-09 (produced 2021-08-09T21:59:00+00:00), after the change: assigned (dated 2006-11-28) source · retrieved
Classification history for this change (4 versions)
  1. : Intra-RIPE NCC transfer, confirmed (classifier 1.3.0)
  2. : Intra-RIPE NCC transfer, confirmed (classifier 1.3.1)
  3. : Intra-RIPE NCC transfer, confirmed (classifier 1.3.2)
  4. : Intra-RIPE NCC transfer, confirmed (classifier 1.4.0) current

Transfer records (2)

Date (UTC)LogTypeRange movedFromTo
RIPE NCCResource transfer91.123.0.0/20 Roberscheuten B.V. RIPE NCCTerrence de Kat RIPE NCC
RIPE NCCResource transfer91.123.0.0/20 TENNET TELECOM SRL RIPE NCCRoberscheuten B.V. RIPE NCC

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.

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