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:
SURF B.V.
·
Clear
Snapshot
2026-01-21
Results
16
Page
1
/
1
145.103.114.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
23
Prefix / IP version
/24 · IPv4
Network
145.103.114.0
Broadcast
145.103.114.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0758 , 4.2925
Hits / Errors
23
hits ·
3
errors
First / Last seen
2025-01-14 15:22 · 2025-01-14 15:22
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
— ·
glaslokaal.nl
Top geo
The Netherlands
·
South Holland
·
The Hague
Window / Updated
2025-01-13 → 2025-01-20 · Updated
2026-01-14
· v2
Open report →
145.102.242.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
16
Prefix / IP version
/24 · IPv4
Network
145.102.242.0
Broadcast
145.102.242.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.364 , 4.866
Hits / Errors
16
hits ·
0
errors
First / Last seen
2025-10-07 11:36 · 2025-10-07 11:58
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
Stboa
·
Surf B.V.
Top geo
The Netherlands
·
North Holland
·
Amsterdam
Window / Updated
2025-10-06 → 2025-10-13 · Updated
2026-01-14
· v2
Open report →
194.171.198.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
16
Prefix / IP version
/24 · IPv4
Network
194.171.198.0
Broadcast
194.171.198.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.37 , 5.2137
Hits / Errors
16
hits ·
0
errors
First / Last seen
2025-02-07 13:21 · 2025-02-07 13:21
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
Aeres Groep, Ede
·
SURFnet V
Top geo
The Netherlands
·
Flevoland
·
Almere Stad
Window / Updated
2025-02-03 → 2025-02-10 · Updated
2026-01-14
· v2
Open report →
145.107.80.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
16
Prefix / IP version
/24 · IPv4
Network
145.107.80.0
Broadcast
145.107.80.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1146 , 5.0967
Hits / Errors
16
hits ·
2
errors
First / Last seen
2024-01-02 17:36 · 2024-01-02 17:38
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
— ·
UUNET
Top geo
The Netherlands
·
Utrecht
·
Utrecht
Window / Updated
2024-01-01 → 2024-01-08 · Updated
2026-01-14
· v2
Open report →
145.118.198.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
15
Prefix / IP version
/24 · IPv4
Network
145.118.198.0
Broadcast
145.118.198.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.162 , 4.4958
Hits / Errors
15
hits ·
0
errors
First / Last seen
2025-04-07 12:29 · 2025-04-07 12:32
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
Leiden University
·
Surf B.V.
Top geo
The Netherlands
·
South Holland
·
Leiden
Window / Updated
2025-04-07 → 2025-04-14 · Updated
2026-01-14
· v2
Open report →
145.102.172.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
15
Prefix / IP version
/24 · IPv4
Network
145.102.172.0
Broadcast
145.102.172.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.636 , 4.7621
Hits / Errors
15
hits ·
0
errors
First / Last seen
2025-01-06 13:47 · 2025-01-06 13:49
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
Clusius College
·
CLUSIUS
Top geo
The Netherlands
·
North Holland
·
Alkmaar
Window / Updated
2025-01-06 → 2025-01-13 · Updated
2026-01-14
· v2
Open report →
145.52.152.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
11
Prefix / IP version
/24 · IPv4
Network
145.52.152.0
Broadcast
145.52.152.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.04869999999999 , 4.3714
Hits / Errors
11
hits ·
0
errors
First / Last seen
2024-12-09 14:43 · 2024-12-09 14:43
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
— ·
HHS
Top geo
The Netherlands
·
South Holland
·
The Hague
Window / Updated
2024-12-09 → 2024-12-16 · Updated
2026-01-14
· v2
Open report →
131.155.24.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
10
Prefix / IP version
/24 · IPv4
Network
131.155.24.0
Broadcast
131.155.24.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
51.446600000000004 , 5.4736
Hits / Errors
10
hits ·
0
errors
First / Last seen
2025-03-25 13:49 · 2025-03-25 13:49
Top ASN
AS1161 ·
SURF B.V.
Top organization / ISP
Technische Universiteit Eindhoven
·
Surf B.V.
Top geo
The Netherlands
·
North Brabant
·
Eindhoven
Window / Updated
2025-03-24 → 2025-03-31 · Updated
2026-01-14
· v2
Open report →
130.37.198.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
4
Prefix / IP version
/24 · IPv4
Network
130.37.198.0
Broadcast
130.37.198.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.26 , 5.0552
Hits / Errors
4
hits ·
1
errors
First / Last seen
2023-07-24 07:36 · 2023-07-25 04:28
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
Stichting VU
·
Vrije Universiteit Amsterdam
Top geo
The Netherlands
·
North Holland
·
Nederhorst den Berg
Window / Updated
2023-07-24 → 2023-07-31 · Updated
2026-01-14
· v2
Open report →
145.103.246.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
3
Prefix / IP version
/24 · IPv4
Network
145.103.246.0
Broadcast
145.103.246.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0469 , 4.2293
Hits / Errors
3
hits ·
2
errors
First / Last seen
2024-11-27 13:18 · 2024-11-27 13:18
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
— ·
glaslokaal.nl
Top geo
The Netherlands
·
South Holland
·
The Hague
Window / Updated
2024-11-25 → 2024-12-02 · Updated
2026-01-14
· v2
Open report →
145.89.224.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
145.89.224.0
Broadcast
145.89.224.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1849 , 5.3954
Hits / Errors
2
hits ·
0
errors
First / Last seen
2025-09-17 19:03 · 2025-09-17 19:03
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
— ·
Lumc-net Hvunet
Top geo
The Netherlands
·
Utrecht
·
Amersfoort
Window / Updated
2025-09-15 → 2025-09-22 · Updated
2026-01-14
· v2
Open report →
137.224.252.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
137.224.252.0
Broadcast
137.224.252.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
51.9772 , 5.661
Hits / Errors
2
hits ·
1
errors
First / Last seen
2024-12-06 15:31 · 2024-12-06 15:31
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
Wageningen Universiteit
·
WAU
Top geo
The Netherlands
·
Gelderland
·
Wageningen
Window / Updated
2024-12-02 → 2024-12-09 · Updated
2026-01-14
· v2
Open report →
145.103.60.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
145.103.60.0
Broadcast
145.103.60.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0247 , 4.318
Hits / Errors
2
hits ·
1
errors
First / Last seen
2024-06-03 13:42 · 2024-06-03 13:42
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
— ·
glaslokaal.nl
Top geo
The Netherlands
·
South Holland
·
Rijswijk
Window / Updated
2024-06-03 → 2024-06-10 · Updated
2026-01-14
· v2
Open report →
145.97.190.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
145.97.190.0
Broadcast
145.97.190.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
53.2222 , 6.5664
Hits / Errors
2
hits ·
1
errors
First / Last seen
2024-05-14 15:36 · 2024-05-14 15:36
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
— ·
Rijks Universiteit Groningen
Top geo
The Netherlands
·
Groningen
·
Groningen
Window / Updated
2024-05-13 → 2024-05-20 · Updated
2026-01-14
· v2
Open report →
145.90.8.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
145.90.8.0
Broadcast
145.90.8.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.9903 , 6.9473
Hits / Errors
1
hits ·
1
errors
First / Last seen
2025-11-15 12:20 · 2025-11-15 12:20
Top ASN
AS1103 ·
SURF B.V.
Top organization / ISP
Universiteit Twente
·
UT-ANYCAST
Top geo
The Netherlands
·
Groningen
·
Stadskanaal
Window / Updated
2025-11-10 → 2025-11-17 · Updated
2026-01-14
· v2
Open report →
145.220.91.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
145.220.91.0
Broadcast
145.220.91.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.3676 , 4.90414
Hits / Errors
1
hits ·
0
errors
First / Last seen
2025-09-30 18:34 · 2025-09-30 18:34
Top ASN
AS1101 ·
IP-EEND BV
Top organization / ISP
Hadrian
·
Surf B.V.
Top geo
The Netherlands
·
North Holland
·
Amsterdam
Window / Updated
2025-09-29 → 2025-10-06 · Updated
2026-01-14
· v2
Open report →
×
This is a custom alert message.
×
Confirm Action
Are you sure you want to proceed?
