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.
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Active filter:
20539
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Snapshot
2026-03-07
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2
31.135.150.83
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
2026-02-09 02:00
Last seen
2026-02-10 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
94.199.163.150
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 ·
0
errors
First seen
2026-02-08 02:00
Last seen
2026-02-09 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.131.174
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 ·
0
errors
First seen
2026-02-08 02:00
Last seen
2026-02-09 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
94.199.165.227
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
2026-02-07 02:00
Last seen
2026-02-08 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.156.58
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
2026-02-06 02:00
Last seen
2026-02-07 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.132.79
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
2026-02-04 02:00
Last seen
2026-02-05 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.130.16
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
2026-02-04 02:00
Last seen
2026-02-05 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.136.30
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
2026-02-04 02:00
Last seen
2026-02-05 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.135.208
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
2026-02-04 02:00
Last seen
2026-02-05 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
94.199.165.117
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
2026-02-04 02:00
Last seen
2026-02-05 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
94.199.161.10
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
2026-02-01 02:00
Last seen
2026-02-02 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.130.179
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
2026-01-28 02:00
Last seen
2026-01-29 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.138.84
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
2026-01-28 02:00
Last seen
2026-01-29 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.151.198
Risk
0
LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine
·
Sumy
·
Sumy
·
40007
Hits / Errors
1
hits ·
0
errors
First seen
2026-01-27 02:00
Last seen
2026-01-28 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.144.222
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 ·
1
errors
First seen
2026-01-27 02:00
Last seen
2026-01-28 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.129.22
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
2026-01-27 02:00
Last seen
2026-01-28 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.152.115
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
2026-01-27 02:00
Last seen
2026-01-28 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.141.53
Risk
0
LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd.
Location
Ukraine
·
Sumy
·
Sumy
·
40022
Hits / Errors
3
hits ·
0
errors
First seen
2026-01-24 02:00
Last seen
2026-01-27 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.144.208
Risk
0
LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine
·
Sumy
·
Sumy
·
40016
Hits / Errors
2
hits ·
0
errors
First seen
2026-01-26 02:00
Last seen
2026-01-27 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.159.93
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
2026-01-26 02:00
Last seen
2026-01-27 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.134.132
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
2026-01-24 02:00
Last seen
2026-01-25 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.134.56
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
2026-01-24 02:00
Last seen
2026-01-25 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.152.40
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
2026-01-24 02:00
Last seen
2026-01-25 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.133.176
Risk
0
LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine
·
Sumy
·
Sumy
·
40000
Hits / Errors
1
hits ·
0
errors
First seen
2026-01-24 02:00
Last seen
2026-01-25 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
194.146.231.87
Risk
0
LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine
·
Sumy
·
Sumy
·
40030
Hits / Errors
3
hits ·
0
errors
First seen
2026-01-22 02:00
Last seen
2026-01-23 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
94.199.161.200
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
2026-01-22 02:00
Last seen
2026-01-23 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.151.60
Risk
0
LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine
·
Sumy
·
Sumy
·
40007
Hits / Errors
2
hits ·
1
errors
First seen
2026-01-22 02:00
Last seen
2026-01-23 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.146.37
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
2026-01-22 02:00
Last seen
2026-01-23 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.157.135
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
2026-01-22 02:00
Last seen
2026-01-23 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.153.83
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
2026-01-21 02:00
Last seen
2026-01-22 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.154.13
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
2026-01-20 02:00
Last seen
2026-01-21 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.154.19
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
2026-01-20 02:00
Last seen
2026-01-21 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
94.199.166.19
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
2025-12-17 02:00
Last seen
2025-12-18 02:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.135.36
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
2025-09-17 03:00
Last seen
2025-09-18 03:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
31.135.147.241
Risk
0
LOW
ASN
AS20539
Organization
Technical Centre Radio Systems Ltd.
ISP
Technical Centre Radio Systems Ltd
Location
Ukraine
·
Sumy
·
Sumy
·
40016
Hits / Errors
2
hits ·
0
errors
First seen
2025-08-04 03:00
Last seen
2025-08-05 03:00
Model
v1
Freshness
Risk computed:
2026-02-18
Open report →
Explore logs →
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