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Interesting Subnets

Directory of active subnets observed by Syndu. Each row is the latest cached SubnetSnapshot per subnet and includes: density, traffic, geo/ASN representatives, and risk distribution.
Active filter: Telefonica O2 Czech Republic, a.s. · Clear
Snapshot 2026-03-14 Results — Page 1 / 1

90.177.145.0/24

Risk Max — LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
90.177.145.0
Broadcast
90.177.145.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
50.0766 , 14.4464
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-04 02:00
Top ASN
AS5610 · O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET · Telefonica O2 Czech Republic, a.s.
Top geo
Czechia · Prague · Prague
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2
Open report →

109.81.84.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
109.81.84.0
Broadcast
109.81.84.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
50.0883 , 14.4124
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-03-07 02:00 · 2026-03-08 02:00
Top ASN
AS5610 · O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET · Telefonica O2 Czech Republic, a.s.
Top geo
Czechia · Prague · Prague
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2
Open report →

83.208.203.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
83.208.203.0
Broadcast
83.208.203.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
49.1953 , 16.6016
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-03-07 02:00 · 2026-03-08 02:00
Top ASN
AS5610 · O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET · Telefonica O2 Czech Republic, a.s.
Top geo
Czechia · South Moravian · Brno
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2
Open report →

88.102.255.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
88.102.255.0
Broadcast
88.102.255.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
49.7848 , 14.6889
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-03-07 02:00 · 2026-03-08 02:00
Top ASN
AS5610 · O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET · Telefonica O2 Czech Republic, a.s.
Top geo
Czechia · Central Bohemia · Benešov
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2
Open report →

90.177.146.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
90.177.146.0
Broadcast
90.177.146.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
50.0766 , 14.4464
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-03-07 02:00 · 2026-03-08 02:00
Top ASN
AS5610 · O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET · Telefonica O2 Czech Republic, a.s.
Top geo
Czechia · Prague · Prague
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2
Open report →

90.181.136.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
90.181.136.0
Broadcast
90.181.136.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
50.6873 , 14.5429
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-03-07 02:00 · 2026-03-08 02:00
Top ASN
AS5610 · O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET · Telefonica O2 Czech Republic, a.s.
Top geo
Czechia · Liberecký kraj · Česká Lípa
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2
Open report →

90.180.177.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
90.180.177.0
Broadcast
90.180.177.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
50.2398 , 12.8603
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-03-05 02:00 · 2026-03-06 02:00
Top ASN
AS5610 · O2 Czech Republic, a.s.
Top organization / ISP
Telefonica O2 Czech Republic, a.s. · O2 Czech Republic, a.s.
Top geo
Czechia · Karlovarský kraj · Karlovy Vary
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2
Open report →

109.81.94.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
109.81.94.0
Broadcast
109.81.94.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
50.0687 , 14.3947
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-04 02:00
Top ASN
AS5610 · O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET · Telefonica O2 Czech Republic, a.s.
Top geo
Czechia · Prague · Prague
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2
Open report →

90.177.144.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
90.177.144.0
Broadcast
90.177.144.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
50.0766 , 14.4464
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-03-03 02:00 · 2026-03-04 02:00
Top ASN
AS5610 · O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET · Telefonica O2 Czech Republic, a.s.
Top geo
Czechia · Prague · Prague
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2
Open report →

109.81.93.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
109.81.93.0
Broadcast
109.81.93.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
50.0687 , 14.3947
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-03-02 02:00 · 2026-03-03 02:00
Top ASN
AS5610 · O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET · Telefonica O2 Czech Republic, a.s.
Top geo
Czechia · Prague · Prague
Window / Updated
2026-03-02 → 2026-03-09 · Updated 2026-03-13 · v2
Open report →