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Threat Actors — IPs

Directory of recently active, high-risk IP addresses observed by Syndu. Each entry links to a full IP report with enriched metadata and risk scoring.
Active filter: 20539 · Clear
Snapshot 2026-03-06 Results windowed Page 1 +

31.135.155.70

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
1 hits · 0 errors
First seen
2026-03-01 02:00
Last seen
2026-03-02 02:00
Model
v1
Freshness
Risk computed: 2026-03-03
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94.199.160.164

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40030
Hits / Errors
2 hits · 0 errors
First seen
2026-02-28 02:00
Last seen
2026-03-01 02:00
Model
v1
Freshness
Risk computed: 2026-03-03
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31.135.128.177

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40021
Hits / Errors
2 hits · 0 errors
First seen
2026-02-28 02:00
Last seen
2026-03-01 02:00
Model
v1
Freshness
Risk computed: 2026-03-03
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31.135.136.35

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
6 hits · 2 errors
First seen
2026-02-12 19:50
Last seen
2026-02-28 02:00
Model
v1
Freshness
Risk computed: 2026-03-03
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31.135.151.248

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40022
Hits / Errors
1 hits · 0 errors
First seen
2026-02-27 02:00
Last seen
2026-02-28 02:00
Model
v1
Freshness
Risk computed: 2026-03-03
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31.135.152.247

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
2 hits · 0 errors
First seen
2026-02-26 02:00
Last seen
2026-02-27 02:00
Model
v1
Freshness
Risk computed: 2026-03-03
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31.135.148.215

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40022
Hits / Errors
2 hits · 0 errors
First seen
2026-02-23 02:00
Last seen
2026-02-26 02:00
Model
v1
Freshness
Risk computed: 2026-03-03
Open report →
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94.199.167.202

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40030
Hits / Errors
1 hits · 0 errors
First seen
2026-02-24 02:00
Last seen
2026-02-25 02:00
Model
v1
Freshness
Risk computed: 2026-03-03
Open report →
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31.135.145.58

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40034
Hits / Errors
1 hits · 0 errors
First seen
2026-02-24 02:00
Last seen
2026-02-25 02:00
Model
v1
Freshness
Risk computed: 2026-03-03
Open report →
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94.199.166.102

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40030
Hits / Errors
1 hits · 0 errors
First seen
2026-02-23 02:00
Last seen
2026-02-24 02:00
Model
v1
Freshness
Risk computed: 2026-03-03
Open report →
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31.135.139.66

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
1 hits · 0 errors
First seen
2026-02-21 02:00
Last seen
2026-02-22 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.142.59

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
4 hits · 0 errors
First seen
2026-02-14 02:06
Last seen
2026-02-21 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
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91.201.227.103

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
2 hits · 0 errors
First seen
2026-02-20 02:00
Last seen
2026-02-21 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
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31.135.157.211

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
1 hits · 0 errors
First seen
2026-02-20 02:00
Last seen
2026-02-21 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.158.1

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
1 hits · 0 errors
First seen
2026-02-19 02:00
Last seen
2026-02-20 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.145.237

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40034
Hits / Errors
1 hits · 0 errors
First seen
2026-02-19 02:00
Last seen
2026-02-20 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.150.112

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
3 hits · 0 errors
First seen
2026-02-12 21:58
Last seen
2026-02-19 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.144.58

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40034
Hits / Errors
1 hits · 0 errors
First seen
2026-02-18 02:00
Last seen
2026-02-19 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.139.206

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
1 hits · 0 errors
First seen
2026-02-18 02:00
Last seen
2026-02-19 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.139.144

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
1 hits · 0 errors
First seen
2026-02-18 02:00
Last seen
2026-02-19 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.143.176

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
2 hits · 0 errors
First seen
2026-02-17 02:00
Last seen
2026-02-18 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.147.99

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40016
Hits / Errors
1 hits · 0 errors
First seen
2026-02-17 02:00
Last seen
2026-02-18 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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91.201.226.232

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
1 hits · 0 errors
First seen
2026-02-17 02:00
Last seen
2026-02-18 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.145.108

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40034
Hits / Errors
1 hits · 0 errors
First seen
2026-02-17 02:00
Last seen
2026-02-18 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.156.52

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
1 hits · 0 errors
First seen
2026-02-16 02:00
Last seen
2026-02-17 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.157.44

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
1 hits · 0 errors
First seen
2026-02-16 02:00
Last seen
2026-02-17 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.146.218

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
2 hits · 0 errors
First seen
2026-02-15 02:00
Last seen
2026-02-16 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.145.20

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40034
Hits / Errors
1 hits · 0 errors
First seen
2026-02-15 02:00
Last seen
2026-02-16 02:00
Model
v1
Freshness
Risk computed: 2026-02-23
Open report →
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31.135.144.167

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40016
Hits / Errors
4 hits · 2 errors
First seen
2026-02-04 02:00
Last seen
2026-02-15 02:00
Model
v1
Freshness
Risk computed: 2026-02-18
Open report →
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31.135.147.222

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40016
Hits / Errors
1 hits · 0 errors
First seen
2026-02-14 02:00
Last seen
2026-02-15 02:00
Model
v1
Freshness
Risk computed: 2026-02-18
Open report →
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31.135.156.201

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
1 hits · 0 errors
First seen
2026-02-14 02:00
Last seen
2026-02-15 02:00
Model
v1
Freshness
Risk computed: 2026-02-18
Open report →
Explore logs →

31.135.147.109

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40016
Hits / Errors
1 hits · 0 errors
First seen
2026-02-14 02:00
Last seen
2026-02-15 02:00
Model
v1
Freshness
Risk computed: 2026-02-18
Open report →
Explore logs →

31.135.143.99

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
1 hits · 1 errors
First seen
2026-02-13 02:00
Last seen
2026-02-14 02:00
Model
v1
Freshness
Risk computed: 2026-02-18
Open report →
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31.135.128.77

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40021
Hits / Errors
1 hits · 1 errors
First seen
2026-02-13 02:00
Last seen
2026-02-14 02:00
Model
v1
Freshness
Risk computed: 2026-02-18
Open report →
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94.199.161.150

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40030
Hits / Errors
1 hits · 1 errors
First seen
2026-02-13 02:00
Last seen
2026-02-14 02:00
Model
v1
Freshness
Risk computed: 2026-02-18
Open report →
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31.135.131.38

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine · Sumy · Sumy · 40021
Hits / Errors
1 hits · 1 errors
First seen
2026-02-13 02:00
Last seen
2026-02-14 02:00
Model
v1
Freshness
Risk computed: 2026-02-18
Open report →
Explore logs →

31.135.157.156

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
2 hits · 0 errors
First seen
2026-02-09 02:00
Last seen
2026-02-12 02:00
Model
v1
Freshness
Risk computed: 2026-02-18
Open report →
Explore logs →

94.199.167.82

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40030
Hits / Errors
1 hits · 0 errors
First seen
2026-02-11 02:00
Last seen
2026-02-12 02:00
Model
v1
Freshness
Risk computed: 2026-02-18
Open report →
Explore logs →

31.135.143.10

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40000
Hits / Errors
1 hits · 1 errors
First seen
2026-02-11 02:00
Last seen
2026-02-12 02:00
Model
v1
Freshness
Risk computed: 2026-02-18
Open report →
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94.199.161.94

Risk 0 LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine · Sumy · Sumy · 40030
Hits / Errors
1 hits · 0 errors
First seen
2026-02-11 02:00
Last seen
2026-02-12 02:00
Model
v1
Freshness
Risk computed: 2026-02-18
Open report →
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