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175.45.176.21

175.45.176.21 is an IP address that 3 published sources report in connection with unclustered DPRK and Contagious Interview activity, which public reporting attributes to North Korea (DPRK). It is cited here from NKInternet and Trend Micro. The earliest of those reports is dated 2025-01-06 and the most recent 2025-07-16.

ip address DPRK (cluster unattributed)Contagious Interview MATCHED IN SOURCE

First seen 2025-01-06 · last seen 2025-07-16

Network

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

Sources

• …how the Hangro client authenticates, as well as some recent sightings of Hangro in the wild. Handshake Failures Across the four IPs 175.45.176.21, 175.45.176.22, 188.43.136.115, and 188.43.136.116 they all share a common certificate on port 7443.…

  Hangro: Investigating North Korean VPN Infrastructure Part 2 — NKInternet · under “Handshake Failures” · published 2025-07-16 · pulled 2026-09-12

• …These IPs shared certificates on port 3225 and also had port 8888 open: 175.45.176.21 175.45.176.22 188.43.136.115 188.43.136.116 Until November 1, 2024, these IPs displayed the following certificate information on…

  Hangro: Investigating North Korean VPN Infrastructure Part 1 — NKInternet · under “Hangro’s IP Infrastructure” · published 2025-01-06 · pulled 2026-09-12

• …IP addresses are used to connect back to North Korea by North Korean-aligned actors abroad; a related assessment was made here : 175.45.176.21 175.45.176.22 188.43.136.115 188.43.136.116 The Russian IP ranges in Table 1 belong to ASN AS20485, which belongs to…

  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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Related indicators

Cited by the same report: Hangro: Investigating North Korean VPN Infrastructure Part 2

NKInternet lists 3 other indicators in this source.

• 175.45.176.22 IP address
• 188.43.136.115 IP address
• 188.43.136.116 IP address

Cited by the same report: Hangro: Investigating North Korean VPN Infrastructure Part 1

NKInternet lists 5 other indicators in this source. 2 are shown, chosen across types.

• 175.45.176.32 IP address
• 218.25.43.212 IP address

All 6 indicators from this source

Cited by the same report: Russian Infrastructure Plays Crucial Role in North Korean Cybercrime Operations

Trend Micro lists 12 other indicators in this source. 7 are shown, chosen across types.

• 188.43.136.255 IP address
• 188.43.33.249 IP address
• 188.43.33.250 IP address
• 188.43.33.251 IP address
• 188.43.33.253 IP address
• 80.237.84.255 IP address
• 80.237.87.255 IP address

All 13 indicators from this source