`188.43.33.253`

188.43.33.253 is an IP address that 3 published sources report in connection with IT Worker Fraud, Contagious Interview and Lazarus Group activity, which public reporting attributes to North Korea (DPRK). It is cited here from Kudelski Security Research, Kudelski Security and Trend Micro. The earliest of those reports is dated 2025-04-23 and the most recent 2026-10-18.

ip address IT Worker Fraud Contagious Interview Lazarus Group MATCHED IN SOURCE

First seen 2025-04-23 · last seen 2026-10-18

Network

Kind	fixed line
Network	Joint Stock Company TransTeleCom (TTK PtP)
Announced by	AS20485 Joint Stock Company TransTeleCom
Country	Russia

Looked up 2026-09-21 at ip-api.com. A subscriber line, as a person working from home ordinarily has.

Sources

…with Skyfreight Limited remained unchanged. IP Initial Reverse DNS or Pivoting Point Remarks 188.43.33.253 (Inactive) investstroytrest-gw.transtelecom.net Changed to SevDirInfr-gw.transtelecom.net and, instead of being in…
Kudelski Security Research — Kudelski Security Research · under “Tracking Public-Facing IP Addresses” · published 2025-03-05 · pulled 2026-09-10
…with Skyfreight Limited remained unchanged. IP Initial Reverse DNS or Pivoting Point Remarks 188.43.33.253 (Inactive) investstroytrest-gw.transtelecom.net Changed to SevDirInfr-gw.transtelecom.net and, instead of being in…
DPRK Fake IT Workers: Inside Their Evolving Network Infrastructure - Kudelski Security Research Center — Kudelski Security · under “Tracking Public-Facing IP Addresses” · published 2026-07-17 · pulled 2026-09-12
…188.43.136.0/24 20485 KPOST-NET2 September 12, 2017 Khabarovsk, Russia 188.43.33.249 188.43.33.250 188.43.33.251 188.43.33.252 188.43.33.253 20485 (Generic network name) Undetermined Undetermined Table 1.…
Russian Infrastructure Plays Crucial Role in North Korean Cybercrime Operations — Trend Micro · under “Anonymization layers” · published 2025-04-23 · pulled 2026-09-12

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