221.159.21.88

High 10/15/30d lists

Suspicious SSH authentication attempts against monitored systems.

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Risk score69/100

Detection volume+36Sensor corroboration+15Signal class+12Recency+6

Address intelligence

cached

CountrySouth KoreaKR

City / regionSouth Korea

NetworkKorea Telecom

ASN—

Reverse DNS—

Detections9total observations

Reporting sensors3distinct collectors

First seen2026-05-30 15:13 GMT+82 months ago

Last seen2026-08-14 12:38 GMT+88 days ago

Blocklist window10/15/30d lists

Reporting sensors

which collectors observed this address

SSH Sensor 022 observation(s) · last 2026-08-14 12:38 GMT+8SSH
SSH Sensor 016 observation(s) · last 2026-07-29 14:23 GMT+8SSH
SSH Sensor 041 observation(s) · last 2026-05-30 15:13 GMT+8SSH

Sensor names are anonymised. Collector hostnames and log contents are never published.

Observation history

1 signal record(s)

Suspicious SSH authentication attemptsHighSSH abuse
9 detection(s) from 3 sensor(s) · first seen 2026-05-30 15:13 GMT+8 · last seen 2026-08-14 12:38 GMT+8 (8 days ago) · active
Suspicious SSH authentication attempts against monitored systems.

Abuse Radar publishes sanitized indicators only. Severity is a triage hint computed from detection volume, sensor corroboration, signal class and recency — it is not an attribution claim. See methodology.