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
2026-03-09
Results
12
Page
1
/
1
109.81.27.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
109.81.27.0
Broadcast
109.81.27.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.076600000000006 , 14.446400000000002
Hits / Errors
3
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 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
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· 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
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
90.181.74.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
90.181.74.0
Broadcast
90.181.74.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.7722 , 14.9556
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-28 02:00 · 2026-03-01 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
·
Liberec
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· 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
2026-02-27 02:00 · 2026-02-28 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
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
90.180.80.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
90.180.80.0
Broadcast
90.180.80.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0766 , 14.4464
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 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
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
90.183.251.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
90.183.251.0
Broadcast
90.183.251.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.137 , 14.7309
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS5610 ·
O2 Czech Republic, a.s.
Top organization / ISP
— ·
CZ.CZNET
Top geo
Czechia
·
Central Bohemia
·
Nehvizdy
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
109.81.6.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
109.81.6.0
Broadcast
109.81.6.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0766 , 14.4464
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS5610 ·
O2 Czech Republic, a.s.
Top organization / ISP
— ·
CZ.CZNET
Top geo
Czechia
·
Prague
·
Prague
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
109.81.26.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
109.81.26.0
Broadcast
109.81.26.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0766 , 14.4464
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 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
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
109.81.92.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
109.81.92.0
Broadcast
109.81.92.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0687 , 14.3947
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 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
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
109.81.95.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
109.81.95.0
Broadcast
109.81.95.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0687 , 14.3947
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 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
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
109.81.31.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
109.81.31.0
Broadcast
109.81.31.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0948 , 14.4785
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 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
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
88.100.109.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
88.100.109.0
Broadcast
88.100.109.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
49.7977 , 18.2311
Hits / Errors
1
hits ·
0
errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS5610 ·
O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET
·
O2 Czech Republic, a.s.
Top geo
Czechia
·
Moravskoslezský kraj
·
Ostrava
Window / Updated
2026-02-23 → 2026-03-02 · Updated
2026-03-03
· v2
Open report →
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