rirtracker

IPv4 range · 256 addresses

138.16.136.0/24

Now

RIPE NCC statistics
Assigned (dated 1990-01-23) on 2026-10-09 (RU)
Registry
RIPE NCC
Holder
PROMARK LLC
From
RIPE NCC's statistics for 2026-10-09 and the latest transfer record

Latest change

Transfer log Intra-RIPE NCC transfer

Reported
2026-05-21 (RIPE NCC)
Confidence
Confirmed
Inventory
No effect on RIPE NCC applicant inventory

Timeline since 2026-01-01 (1)

2026-05-21 RIPE NCC Transfer log Intra-RIPE NCC transfer Confirmed
Transfer log
Transfer: Andrei Zaitsev (RIPE NCC) to PROMARK LLC (RIPE NCC)
From
Andrei Zaitsev RIPE NCC
To
PROMARK LLC RIPE NCC
Piece of
138.16.128.0 - 138.16.137.255: the rest of the block stayed with the seller
Inventory
No effect on RIPE NCC applicant inventory

RIPE NCC's transfer log records a transfer from Andrei Zaitsev (RIPE NCC) to PROMARK LLC (RIPE NCC) on 2026-05-21 19:00 UTC. The registration changed hands; it is not a new allocation from RIPE NCC.

Evidence (3) · classifier 1.1.0,
  1. Transfer log Transfer log: RESOURCE_TRANSFER on 2026-05-21 19:00 UTC, Andrei Zaitsev (RIPE NCC) to PROMARK LLC (RIPE NCC); resources moved: 138.16.136.0/24 source · retrieved
  2. Before RIPE NCC delegated statistics 2026-05-20 (produced 2026-05-20T21:59:59+00:00), before the change: assigned (dated 1990-01-23) source · retrieved
  3. After RIPE NCC delegated statistics 2026-05-21 (produced 2026-05-21T21:59:59+00:00), after the change: assigned (dated 1990-01-23) source · retrieved

Changes to overlapping ranges

DateRegistryRangeRecorded asWhat happened
2026-03-31RIPE NCC138.16.0.0/16Transfer logTransfer into RIPE NCC
2026-03-31ARIN138.16.0.0/16Not in ARIN-IssuedTransfer out of ARIN

Transfer records (3)

Date (UTC)LogTypeRange movedFromTo
RIPE NCCResource transfer138.16.136.0/24 Andrei Zaitsev RIPE NCCPROMARK LLC RIPE NCC
RIPE NCCResource transfer138.16.0.0/16 (no name given) ARINFiber Ltd RIPE NCC
ARINResource transfer138.16.0.0/16 Brown University ARINFiber Ltd RIPE NCC

Every record in the ARIN and RIPE NCC transfer logs that moved any part of this IPv4 range (ARIN's go back to 2009, the RIPE NCC's to 2012). 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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