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.
Search
Active filter:
CZ.CZNET
·
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 →
109.81.17.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
109.81.17.0
Broadcast
109.81.17.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.1242 , 14.398
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
·
O2 Czech Republic
Top geo
Czechia
·
Prague
·
Prague
Window / Updated
2026-03-02 → 2026-03-09 · Updated
2026-03-13
· v2
Open report →
109.81.30.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
109.81.30.0
Broadcast
109.81.30.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0948 , 14.4785
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
·
O2 Czech Republic
Top geo
Czechia
·
Prague
·
Prague
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 →
109.81.16.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
109.81.16.0
Broadcast
109.81.16.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.1242 , 14.398
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
·
O2 Czech Republic
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 →
109.81.19.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
109.81.19.0
Broadcast
109.81.19.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.1242 , 14.398
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-03-01 02:00 · 2026-03-02 02:00
Top ASN
AS5610 ·
O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET
·
O2 Czech Republic
Top geo
Czechia
·
Prague
·
Prague
Window / Updated
2026-03-02 → 2026-03-09 · Updated
2026-03-13
· v2
Open report →
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