AS131279

AS131279 is an autonomous system number that 14 published sources report in connection with IT Worker Fraud and unclustered DPRK activity, which public reporting attributes to North Korea (DPRK). It is cited here from Chollima Group, NKInternet and Intelx. The earliest of those reports is dated 2019-04-11 and the most recent 2026-07-28.

asn IT Worker FraudDPRK (cluster unattributed) MATCHED IN SOURCE

First seen 2019-04-11 · last seen 2026-07-28

Sources

  • …Korean IP ranges. The Hong Kong host showed a more direct connection to DPRK IP space as it's ASN directly peers with Ryugyong-dong (AS131279), North Korea's primary AS. Due to the points listed above, and the fact that NetKey appeared to be active at time of infection, we're…
    Sample Blog Post | Chollima Group — Chollima Group · under “The Mysterious Case of NetKey” · published 2024-10-01 · pulled 2026-09-01
  • …Source Intelligence Menu Skip to content Home Websites Internet AS9341 – North Korea Government AS131279 – Ryugyong-dong 175.45.176.0/24 175.45.177.0/24 175.45.178.0/24 AS134544 – Cenbong Int’l Holdings Limited…
    Finding North Korean IT Workers On GitHub | North Korean Internet — NKInternet · under “Insights from Internet Scanning and Open Source Intelligence” · published 2025-04-24 · pulled 2026-09-01
  • …Source Intelligence Menu Skip to content Home Websites Internet AS9341 – North Korea Government AS131279 – Ryugyong-dong 175.45.176.0/24 175.45.177.0/24 175.45.178.0/24 AS134544 – Cenbong Int’l Holdings Limited…
    npm Malware, Fake Devs, and Deepfake Videos: These Are A Few of My Favorite DPRK Things | North Korean Internet — NKInternet · under “Insights from Internet Scanning and Open Source Intelligence” · published 2026-04-07 · pulled 2026-09-01
  • …Source Intelligence Menu Skip to content Home Websites Internet AS9341 – North Korea Government AS131279 – Ryugyong-dong 175.45.176.0/24 175.45.177.0/24 175.45.178.0/24 AS134544 – Cenbong Int’l Holdings Limited…
    More Fake Devs, More Fake Companies: vexxloso and Nixsora.com | North Korean Internet — NKInternet · under “Insights from Internet Scanning and Open Source Intelligence” · published 2026-04-26 · pulled 2026-09-09
  • …no one noticed) April 11, 2019 Say hello to North Korea’s 3rd internet uplink! The North Korean autonomous system AS131279 just got a new uplink to AS133073 Teleglobal Communication Services Limited – which is assigned to Hong Kong, according to APNIC.…
    North Korea just got a 3rd internet connection (and no one noticed) — Intelx · under “North Korea just got a 3rd internet connection (and no one noticed)” · published 2019-04-11 · pulled 2026-09-12
  • …Source Intelligence Menu Skip to content Home Websites Internet AS9341 – North Korea Government AS131279 – Ryugyong-dong 175.45.176.0/24 175.45.177.0/24 175.45.178.0/24 AS134544 – Cenbong Int’l Holdings Limited…
    Additional Notes on the Trevor Greer Infostealer Logs — NKInternet · under “Insights from Internet Scanning and Open Source Intelligence” · published 2025-12-16 · pulled 2026-09-12
  • …Source Intelligence Menu Skip to content Home Websites Internet AS9341 – North Korea Government AS131279 – Ryugyong-dong 175.45.176.0/24 175.45.177.0/24 175.45.178.0/24 AS134544 – Cenbong Int’l Holdings Limited…
    Exploring the North Korean Email Client: Features and Functionality — NKInternet · under “Insights from Internet Scanning and Open Source Intelligence” · published 2024-09-13 · pulled 2026-09-12
  • …Source Intelligence Menu Skip to content Home Websites Internet AS9341 – North Korea Government AS131279 – Ryugyong-dong 175.45.176.0/24 175.45.177.0/24 175.45.178.0/24 AS134544 – Cenbong Int’l Holdings Limited…
    What We Discovered On a North Korean Server Part 1 — NKInternet · under “Insights from Internet Scanning and Open Source Intelligence” · published 2025-06-16 · pulled 2026-09-12
  • …Source Intelligence Menu Skip to content Home Websites Internet AS9341 – North Korea Government AS131279 – Ryugyong-dong 175.45.176.0/24 175.45.177.0/24 175.45.178.0/24 AS134544 – Cenbong Int’l Holdings Limited…
    DPRK Captive Portal Infrastructure Found in Testing — NKInternet · under “Insights from Internet Scanning and Open Source Intelligence” · published 2026-05-26 · pulled 2026-09-12
  • …Source Intelligence Menu Skip to content Home Websites Internet AS9341 – North Korea Government AS131279 – Ryugyong-dong 175.45.176.0/24 175.45.177.0/24 175.45.178.0/24 AS134544 – Cenbong Int’l Holdings Limited…
    Hunting For North Korean Fiber Optic Cables — NKInternet · under “Insights from Internet Scanning and Open Source Intelligence” · published 2025-12-08 · pulled 2026-09-12
  • …Source Intelligence Menu Skip to content Home Websites Internet AS9341 – North Korea Government AS131279 – Ryugyong-dong 175.45.176.0/24 175.45.177.0/24 175.45.178.0/24 AS134544 – Cenbong Int’l Holdings Limited…
    Hangro: Investigating North Korean VPN Infrastructure Part 2 — NKInternet · under “Insights from Internet Scanning and Open Source Intelligence” · published 2025-07-16 · pulled 2026-09-12
  • …Source Intelligence Menu Skip to content Home Websites Internet AS9341 – North Korea Government AS131279 – Ryugyong-dong 175.45.176.0/24 175.45.177.0/24 175.45.178.0/24 AS134544 – Cenbong Int’l Holdings Limited…
    Hangro: Investigating North Korean VPN Infrastructure Part 1 — NKInternet · under “Insights from Internet Scanning and Open Source Intelligence” · published 2025-01-06 · pulled 2026-09-12
  • …Source Intelligence Menu Skip to content Home Websites Internet AS9341 – North Korea Government AS131279 – Ryugyong-dong 175.45.176.0/24 175.45.177.0/24 175.45.178.0/24 AS134544 – Cenbong Int’l Holdings Limited…
    Hato Tsusin: A Long-Forgotten DPRK Front Company Hiding in Plain Sight? — NKInternet · under “Insights from Internet Scanning and Open Source Intelligence” · published 2026-07-28 · pulled 2026-09-12
  • …Source Intelligence Menu Skip to content Home Websites Internet AS9341 – North Korea Government AS131279 – Ryugyong-dong 175.45.176.0/24 175.45.177.0/24 175.45.178.0/24 AS134544 – Cenbong Int’l Holdings Limited…
    Made for Export: North Korea’s Software Catalog — NKInternet · under “Insights from Internet Scanning and Open Source Intelligence” · published 2026-03-10 · pulled 2026-09-12

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Cited by the same report: Finding North Korean IT Workers On GitHub | North Korean Internet

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Disclaimer An entry here is not proof of DPRK affiliation or wrongdoing. A listed name, account or address may belong to an uninvolved person, so each entry is a lead to verify independently. What inclusion means. See the sourcing methodology.