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:
Telefonica O2 Czech Republic, a.s.
·
Clear
Snapshot
2026-01-20
Results
18
Page
1
/
1
109.81.87.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
35
Prefix / IP version
/24 · IPv4
Network
109.81.87.0
Broadcast
109.81.87.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0883 , 14.4124
Hits / Errors
35
hits ·
0
errors
First / Last seen
2025-02-26 18:50 · 2025-02-26 18:55
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
2025-02-24 → 2025-03-03 · Updated
2026-01-14
· v2
Open report →
109.81.92.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
17
Prefix / IP version
/24 · IPv4
Network
109.81.92.0
Broadcast
109.81.92.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0948 , 14.4785
Hits / Errors
17
hits ·
0
errors
First / Last seen
2025-01-22 13:56 · 2025-01-22 13:58
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
2025-01-20 → 2025-01-27 · Updated
2026-01-14
· v2
Open report →
109.81.88.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
13
Prefix / IP version
/24 · IPv4
Network
109.81.88.0
Broadcast
109.81.88.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0802 , 14.4652
Hits / Errors
13
hits ·
0
errors
First / Last seen
2025-08-19 17:57 · 2025-08-19 17:57
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
2025-08-18 → 2025-08-25 · Updated
2026-01-14
· v2
Open report →
88.101.37.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
12
Prefix / IP version
/24 · IPv4
Network
88.101.37.0
Broadcast
88.101.37.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0687 , 14.3947
Hits / Errors
12
hits ·
0
errors
First / Last seen
2024-11-26 22:47 · 2024-11-26 22:49
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
2024-11-25 → 2024-12-02 · Updated
2026-01-14
· v2
Open report →
88.101.92.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
88.101.92.0
Broadcast
88.101.92.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.4363 , 15.4625
Hits / Errors
2
hits ·
0
errors
First / Last seen
2025-09-28 10:17 · 2025-09-28 10:17
Top ASN
AS5610 ·
O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET
·
Telefonica O2 Czech Republic, a.s.
Top geo
Czechia
·
Královéhradecký kraj
·
Lužany
Window / Updated
2025-09-22 → 2025-09-29 · Updated
2026-01-14
· v2
Open report →
85.70.78.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
85.70.78.0
Broadcast
85.70.78.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.1242 , 14.398
Hits / Errors
2
hits ·
0
errors
First / Last seen
2025-09-17 11:01 · 2025-09-17 11:01
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
2025-09-15 → 2025-09-22 · Updated
2026-01-14
· v2
Open report →
85.71.29.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
85.71.29.0
Broadcast
85.71.29.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
49.2127 , 16.6117
Hits / Errors
2
hits ·
0
errors
First / Last seen
2025-09-15 11:12 · 2025-09-15 11:12
Top ASN
AS5610 ·
O2 Czech Republic, a.s.
Top organization / ISP
xDSL services
·
Telefonica O2 Czech Republic, a.s.
Top geo
Czechia
·
South Moravian
·
Brno
Window / Updated
2025-09-15 → 2025-09-22 · Updated
2026-01-14
· v2
Open report →
83.208.47.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
83.208.47.0
Broadcast
83.208.47.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.1155 , 14.4124
Hits / Errors
2
hits ·
0
errors
First / Last seen
2025-09-14 02:41 · 2025-09-14 02:41
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
2025-09-08 → 2025-09-15 · Updated
2026-01-14
· v2
Open report →
90.181.164.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
90.181.164.0
Broadcast
90.181.164.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
49.8542 , 18.2633
Hits / Errors
2
hits ·
0
errors
First / Last seen
2025-05-13 19:04 · 2025-05-13 19:04
Top ASN
AS5610 ·
O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET
·
Telefonica O2 Czech Republic, a.s.
Top geo
Czechia
·
Moravskoslezský kraj
·
Ostrava
Window / Updated
2025-05-12 → 2025-05-19 · Updated
2026-01-14
· v2
Open report →
90.177.109.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
90.177.109.0
Broadcast
90.177.109.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.3507 , 14.47
Hits / Errors
2
hits ·
0
errors
First / Last seen
2025-03-28 23:35 · 2025-03-28 23:35
Top ASN
AS5610 ·
O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET
·
Telefonica O2 Czech Republic, a.s.
Top geo
Czechia
·
Central Bohemia
·
Mělník
Window / Updated
2025-03-24 → 2025-03-31 · Updated
2026-01-14
· v2
Open report →
88.102.208.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
88.102.208.0
Broadcast
88.102.208.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0471 , 14.4523
Hits / Errors
1
hits ·
0
errors
First / Last seen
2025-09-21 09:13 · 2025-09-21 09:13
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
2025-09-15 → 2025-09-22 · Updated
2026-01-14
· v2
Open report →
90.176.169.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
90.176.169.0
Broadcast
90.176.169.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0471 , 14.4523
Hits / Errors
1
hits ·
0
errors
First / Last seen
2025-05-08 12:33 · 2025-05-08 12:33
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
2025-05-05 → 2025-05-12 · Updated
2026-01-14
· v2
Open report →
90.177.198.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
90.177.198.0
Broadcast
90.177.198.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
49.3503 , 16.0186
Hits / Errors
1
hits ·
0
errors
First / Last seen
2025-04-21 03:11 · 2025-04-21 03:11
Top ASN
AS5610 ·
O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET
·
Telefonica O2 Czech Republic, a.s.
Top geo
Czechia
·
Kraj Vysočina
·
Velké Meziříčí
Window / Updated
2025-04-21 → 2025-04-28 · Updated
2026-01-14
· v2
Open report →
85.71.137.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
85.71.137.0
Broadcast
85.71.137.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
49.8542 , 18.2633
Hits / Errors
1
hits ·
0
errors
First / Last seen
2025-04-10 09:30 · 2025-04-10 09:30
Top ASN
AS5610 ·
O2 Czech Republic, a.s.
Top organization / ISP
xDSL services
·
Telefonica O2 Czech Republic, a.s.
Top geo
Czechia
·
Moravskoslezský kraj
·
Ostrava
Window / Updated
2025-04-07 → 2025-04-14 · Updated
2026-01-14
· v2
Open report →
88.101.212.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
88.101.212.0
Broadcast
88.101.212.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0766 , 14.4464
Hits / Errors
1
hits ·
0
errors
First / Last seen
2025-04-01 05:53 · 2025-04-01 05:53
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
2025-03-31 → 2025-04-07 · Updated
2026-01-14
· v2
Open report →
88.101.93.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
88.101.93.0
Broadcast
88.101.93.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.4363 , 15.4625
Hits / Errors
1
hits ·
0
errors
First / Last seen
2025-03-21 15:24 · 2025-03-21 15:24
Top ASN
AS5610 ·
O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET
·
Telefonica O2 Czech Republic, a.s.
Top geo
Czechia
·
Královéhradecký kraj
·
Lužany
Window / Updated
2025-03-17 → 2025-03-24 · Updated
2026-01-14
· v2
Open report →
88.100.231.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
88.100.231.0
Broadcast
88.100.231.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
50.0687 , 14.3947
Hits / Errors
1
hits ·
0
errors
First / Last seen
2025-03-02 11:34 · 2025-03-02 11:34
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
2025-02-24 → 2025-03-03 · Updated
2026-01-14
· v2
Open report →
88.100.39.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
88.100.39.0
Broadcast
88.100.39.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
49.8792 , 18.3709
Hits / Errors
1
hits ·
0
errors
First / Last seen
2025-02-17 18:24 · 2025-02-17 18:24
Top ASN
AS5610 ·
O2 Czech Republic, a.s.
Top organization / ISP
CZ.CZNET
·
Telefonica O2 Czech Republic, a.s.
Top geo
Czechia
·
Moravskoslezský kraj
·
Bohumín
Window / Updated
2025-02-17 → 2025-02-24 · Updated
2026-01-14
· v2
Open report →
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