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:
Utrecht
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Clear
Snapshot
2026-01-20
Results
32
Page
1
/
1
185.99.26.0/24
Risk Max
2
LOW
Footprint
1.562
%
Hits
747
Prefix / IP version
/24 · IPv4
Network
185.99.26.0
Broadcast
185.99.26.255
Observed IPs / Subnet size
4
observed ·
256
total
Centroid
52.25329518072289 , 5.13110483266399
Hits / Errors
747
hits ·
11
errors
First / Last seen
2025-09-16 18:34 · 2025-09-21 20:18
Top ASN
AS30967 ·
TP Global Operations Limited
Top organization / ISP
Truphone Bv
·
TRUPHONE-BV
Top geo
The Netherlands
·
Utrecht
·
Bilthoven
Window / Updated
2025-09-15 → 2025-09-22 · Updated
2026-01-14
· v2
Open report →
45.135.57.0/24
Risk Max
2
LOW
Footprint
0.391
%
Hits
9
Prefix / IP version
/24 · IPv4
Network
45.135.57.0
Broadcast
45.135.57.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0313 , 5.41479
Hits / Errors
9
hits ·
9
errors
First / Last seen
2024-02-16 08:21 · 2024-02-16 08:29
Top ASN
AS206176 ·
GreenEdge B.V.
Top organization / ISP
Critical Core BV
·
GreenEdge B.V.
Top geo
The Netherlands
·
Utrecht
·
Leersum
Window / Updated
2024-02-12 → 2024-02-19 · Updated
2026-01-14
· v2
Open report →
86.80.39.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
57
Prefix / IP version
/24 · IPv4
Network
86.80.39.0
Broadcast
86.80.39.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1223 , 5.2342
Hits / Errors
57
hits ·
35
errors
First / Last seen
2025-09-17 20:25 · 2025-09-19 15:46
Top ASN
AS1136 ·
KPN B.V.
Top organization / ISP
Telfort
·
KPN B.V.
Top geo
The Netherlands
·
Utrecht
·
Bosch en Duin
Window / Updated
2025-09-15 → 2025-09-22 · Updated
2026-01-14
· v2
Open report →
77.172.252.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
51
Prefix / IP version
/24 · IPv4
Network
77.172.252.0
Broadcast
77.172.252.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1424 , 5.3674
Hits / Errors
51
hits ·
10
errors
First / Last seen
2025-06-25 10:40 · 2025-06-25 10:45
Top ASN
AS1136 ·
KPN B.V.
Top organization / ISP
— ·
FCN
Top geo
The Netherlands
·
Utrecht
·
Amersfoort
Window / Updated
2025-06-23 → 2025-06-30 · Updated
2026-01-14
· v2
Open report →
193.172.191.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
38
Prefix / IP version
/24 · IPv4
Network
193.172.191.0
Broadcast
193.172.191.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0932 , 5.0647
Hits / Errors
38
hits ·
12
errors
First / Last seen
2025-04-30 01:59 · 2025-04-30 02:23
Top ASN
AS1136 ·
KPN B.V.
Top organization / ISP
KPN B.V
·
KPN B.V.
Top geo
The Netherlands
·
Utrecht
·
Utrecht
Window / Updated
2025-04-28 → 2025-05-05 · Updated
2026-01-14
· v2
Open report →
80.114.123.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
36
Prefix / IP version
/24 · IPv4
Network
80.114.123.0
Broadcast
80.114.123.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1216 , 5.1045
Hits / Errors
36
hits ·
0
errors
First / Last seen
2025-07-08 23:57 · 2025-07-08 23:57
Top ASN
AS33915 ·
Vodafone Libertel B.V.
Top organization / ISP
Ziggo CM
·
Vodafone Libertel B.V.
Top geo
The Netherlands
·
Utrecht
·
Utrecht
Window / Updated
2025-07-07 → 2025-07-14 · Updated
2026-01-14
· v2
Open report →
77.248.201.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
36
Prefix / IP version
/24 · IPv4
Network
77.248.201.0
Broadcast
77.248.201.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.2434 , 5.3698
Hits / Errors
36
hits ·
0
errors
First / Last seen
2025-05-06 21:10 · 2025-05-06 21:11
Top ASN
AS33915 ·
Vodafone Libertel B.V.
Top organization / ISP
Liberty Global B.V.
·
Vodafone Ziggo
Top geo
The Netherlands
·
Utrecht
·
Bunschoten
Window / Updated
2025-05-05 → 2025-05-12 · Updated
2026-01-14
· v2
Open report →
94.210.125.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
36
Prefix / IP version
/24 · IPv4
Network
94.210.125.0
Broadcast
94.210.125.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1964 , 4.8915
Hits / Errors
36
hits ·
4
errors
First / Last seen
2024-12-30 21:30 · 2024-12-31 19:46
Top ASN
AS33915 ·
Vodafone Libertel B.V.
Top organization / ISP
Ziggo CM
·
Vodafone Libertel B.V.
Top geo
The Netherlands
·
Utrecht
·
Wilnis
Window / Updated
2024-12-30 → 2025-01-06 · Updated
2026-01-14
· v2
Open report →
31.21.137.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
36
Prefix / IP version
/24 · IPv4
Network
31.21.137.0
Broadcast
31.21.137.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1539 , 5.4083
Hits / Errors
36
hits ·
8
errors
First / Last seen
2024-01-27 15:18 · 2024-01-27 23:31
Top ASN
AS50266 ·
Odido Netherlands B.V.
Top organization / ISP
Odido Netherlands
·
Odido Netherlands B.V.
Top geo
The Netherlands
·
Utrecht
·
Amersfoort
Window / Updated
2024-01-22 → 2024-01-29 · Updated
2026-01-14
· v2
Open report →
84.85.94.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
35
Prefix / IP version
/24 · IPv4
Network
84.85.94.0
Broadcast
84.85.94.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1223 , 5.2342
Hits / Errors
35
hits ·
0
errors
First / Last seen
2025-05-06 21:03 · 2025-05-06 21:35
Top ASN
AS1136 ·
KPN B.V.
Top organization / ISP
— ·
KPN B.V.
Top geo
The Netherlands
·
Utrecht
·
Bosch en Duin
Window / Updated
2025-05-05 → 2025-05-12 · Updated
2026-01-14
· v2
Open report →
84.80.220.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
27
Prefix / IP version
/24 · IPv4
Network
84.80.220.0
Broadcast
84.80.220.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.209700000000005 , 5.2917
Hits / Errors
27
hits ·
2
errors
First / Last seen
2025-05-04 12:18 · 2025-05-04 12:20
Top ASN
AS1136 ·
KPN B.V.
Top organization / ISP
— ·
KPN B.V.
Top geo
The Netherlands
·
Utrecht
·
Baarn
Window / Updated
2025-04-28 → 2025-05-05 · Updated
2026-01-14
· v2
Open report →
77.165.92.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
22
Prefix / IP version
/24 · IPv4
Network
77.165.92.0
Broadcast
77.165.92.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0922 , 5.1268
Hits / Errors
22
hits ·
0
errors
First / Last seen
2025-01-18 15:50 · 2025-01-18 15:52
Top ASN
AS1136 ·
KPN B.V.
Top organization / ISP
— ·
KPN B.V.
Top geo
The Netherlands
·
Utrecht
·
Utrecht
Window / Updated
2025-01-13 → 2025-01-20 · Updated
2026-01-14
· v2
Open report →
5.132.32.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
21
Prefix / IP version
/24 · IPv4
Network
5.132.32.0
Broadcast
5.132.32.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.22189999999999 , 5.2869
Hits / Errors
21
hits ·
0
errors
First / Last seen
2025-01-08 23:01 · 2025-01-08 23:05
Top ASN
AS50266 ·
Odido Netherlands B.V.
Top organization / ISP
T Mobile Thuis BV
·
T-mobile Thuis
Top geo
The Netherlands
·
Utrecht
·
Baarn
Window / Updated
2025-01-06 → 2025-01-13 · Updated
2026-01-14
· v2
Open report →
188.89.210.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
20
Prefix / IP version
/24 · IPv4
Network
188.89.210.0
Broadcast
188.89.210.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1928 , 5.4199
Hits / Errors
20
hits ·
2
errors
First / Last seen
2024-09-16 14:11 · 2024-09-16 14:11
Top ASN
AS50266 ·
Odido Netherlands B.V.
Top organization / ISP
— ·
Odido Netherlands
Top geo
The Netherlands
·
Utrecht
·
Amersfoort
Window / Updated
2024-09-16 → 2024-09-23 · Updated
2026-01-14
· v2
Open report →
81.172.142.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
18
Prefix / IP version
/24 · IPv4
Network
81.172.142.0
Broadcast
81.172.142.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0211 , 5.5828
Hits / Errors
18
hits ·
0
errors
First / Last seen
2025-04-11 16:55 · 2025-04-11 17:59
Top ASN
AS15435 ·
DELTA Fiber Nederland B.V.
Top organization / ISP
DELTA Fiber Nederland B.V
·
DELTA Fiber Nederland B.V.
Top geo
The Netherlands
·
Utrecht
·
Veenendaal
Window / Updated
2025-04-07 → 2025-04-14 · 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 →
86.88.64.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
15
Prefix / IP version
/24 · IPv4
Network
86.88.64.0
Broadcast
86.88.64.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1477 , 5.396
Hits / Errors
15
hits ·
0
errors
First / Last seen
2025-03-12 10:06 · 2025-03-12 10:07
Top ASN
AS1136 ·
KPN B.V.
Top organization / ISP
Telfort
·
KPN B.V.
Top geo
The Netherlands
·
Utrecht
·
Amersfoort
Window / Updated
2025-03-10 → 2025-03-17 · Updated
2026-01-14
· v2
Open report →
217.123.86.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
15
Prefix / IP version
/24 · IPv4
Network
217.123.86.0
Broadcast
217.123.86.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0874 , 5.1168
Hits / Errors
15
hits ·
0
errors
First / Last seen
2025-01-09 15:59 · 2025-01-09 16:02
Top ASN
AS33915 ·
Vodafone Libertel B.V.
Top organization / ISP
— ·
Vodafone Ziggo
Top geo
The Netherlands
·
Utrecht
·
Utrecht
Window / Updated
2025-01-06 → 2025-01-13 · Updated
2026-01-14
· v2
Open report →
77.171.194.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
14
Prefix / IP version
/24 · IPv4
Network
77.171.194.0
Broadcast
77.171.194.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1044 , 5.0461
Hits / Errors
14
hits ·
0
errors
First / Last seen
2025-05-12 00:46 · 2025-05-12 00:47
Top ASN
AS1136 ·
KPN B.V.
Top organization / ISP
— ·
KPN B.V.
Top geo
The Netherlands
·
Utrecht
·
Utrecht
Window / Updated
2025-05-05 → 2025-05-12 · Updated
2026-01-14
· v2
Open report →
217.123.32.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
13
Prefix / IP version
/24 · IPv4
Network
217.123.32.0
Broadcast
217.123.32.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0922 , 5.126800000000001
Hits / Errors
13
hits ·
1
errors
First / Last seen
2024-11-30 22:25 · 2024-11-30 22:31
Top ASN
AS33915 ·
Vodafone Libertel B.V.
Top organization / ISP
Ziggo CM
·
Vodafone Libertel B.V.
Top geo
The Netherlands
·
Utrecht
·
Utrecht
Window / Updated
2024-11-25 → 2024-12-02 · Updated
2026-01-14
· v2
Open report →
83.80.252.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
12
Prefix / IP version
/24 · IPv4
Network
83.80.252.0
Broadcast
83.80.252.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0502 , 5.2754
Hits / Errors
12
hits ·
1
errors
First / Last seen
2024-12-19 21:18 · 2024-12-19 21:20
Top ASN
AS33915 ·
Vodafone Libertel B.V.
Top organization / ISP
Ziggo B.V
·
Vodafone Ziggo
Top geo
The Netherlands
·
Utrecht
·
Driebergen-Rijsenburg
Window / Updated
2024-12-16 → 2024-12-23 · Updated
2026-01-14
· v2
Open report →
77.175.168.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
10
Prefix / IP version
/24 · IPv4
Network
77.175.168.0
Broadcast
77.175.168.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.074 , 5.1197
Hits / Errors
10
hits ·
0
errors
First / Last seen
2024-09-25 22:29 · 2024-09-25 23:02
Top ASN
AS1136 ·
KPN B.V.
Top organization / ISP
Customers
·
KPN B.V.
Top geo
The Netherlands
·
Utrecht
·
Utrecht
Window / Updated
2024-09-23 → 2024-09-30 · Updated
2026-01-14
· v2
Open report →
192.76.153.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
7
Prefix / IP version
/24 · IPv4
Network
192.76.153.0
Broadcast
192.76.153.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0908 , 5.12222
Hits / Errors
7
hits ·
0
errors
First / Last seen
2025-10-11 05:50 · 2025-10-11 05:50
Top ASN
AS60404 ·
The Infrastructure Group B.V.
Top organization / ISP
The Infrastructure Group B.V
·
The Infrastructure Group B.V.
Top geo
The Netherlands
·
Utrecht
·
Utrecht
Window / Updated
2025-10-06 → 2025-10-13 · Updated
2026-01-14
· v2
Open report →
185.99.25.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
6
Prefix / IP version
/24 · IPv4
Network
185.99.25.0
Broadcast
185.99.25.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.13649999999999 , 5.21038
Hits / Errors
6
hits ·
2
errors
First / Last seen
2025-09-15 13:22 · 2025-09-15 13:22
Top ASN
AS30967 ·
TP Global Operations Limited
Top organization / ISP
Truphone Bv
·
TRUPHONE-BV
Top geo
The Netherlands
·
Utrecht
·
Bilthoven
Window / Updated
2025-09-15 → 2025-09-22 · Updated
2026-01-14
· v2
Open report →
89.248.172.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
6
Prefix / IP version
/24 · IPv4
Network
89.248.172.0
Broadcast
89.248.172.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0922 , 5.1268
Hits / Errors
6
hits ·
1
errors
First / Last seen
2025-04-21 09:57 · 2025-04-21 09:57
Top ASN
AS202425 ·
IP Volume inc
Top organization / ISP
Quasi Networks LTD.
·
IP Volume inc
Top geo
The Netherlands
·
Utrecht
·
Utrecht
Window / Updated
2025-04-21 → 2025-04-28 · Updated
2026-01-14
· v2
Open report →
195.240.124.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
4
Prefix / IP version
/24 · IPv4
Network
195.240.124.0
Broadcast
195.240.124.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1366 , 5.0588
Hits / Errors
4
hits ·
2
errors
First / Last seen
2024-05-30 01:54 · 2024-05-30 01:54
Top ASN
AS1136 ·
KPN B.V.
Top organization / ISP
— ·
KPN B.V
Top geo
The Netherlands
·
Utrecht
·
Maarssen
Window / Updated
2024-05-27 → 2024-06-03 · 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 →
77.63.125.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
77.63.125.0
Broadcast
77.63.125.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0908 , 5.12222
Hits / Errors
2
hits ·
0
errors
First / Last seen
2025-09-17 14:12 · 2025-09-17 14:12
Top ASN
AS1136 ·
KPN B.V.
Top organization / ISP
KPN Mobile The Netherlands B.V.
·
KPN B.V
Top geo
The Netherlands
·
Utrecht
·
Utrecht
Window / Updated
2025-09-15 → 2025-09-22 · Updated
2026-01-14
· v2
Open report →
212.187.118.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
212.187.118.0
Broadcast
212.187.118.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.0769 , 5.0185
Hits / Errors
2
hits ·
1
errors
First / Last seen
2024-11-29 22:03 · 2024-11-29 22:03
Top ASN
AS33915 ·
Vodafone Libertel B.V.
Top organization / ISP
— ·
Chello Broadband - Amsterdam
Top geo
The Netherlands
·
Utrecht
·
De Meern
Window / Updated
2024-11-25 → 2024-12-02 · Updated
2026-01-14
· v2
Open report →
109.37.151.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
2
Prefix / IP version
/24 · IPv4
Network
109.37.151.0
Broadcast
109.37.151.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
51.9417 , 5.14028
Hits / Errors
2
hits ·
0
errors
First / Last seen
2024-11-01 16:25 · 2024-11-01 16:44
Top ASN
AS33915 ·
Vodafone Libertel B.V.
Top organization / ISP
— ·
VODAFONE
Top geo
The Netherlands
·
Utrecht
·
Zijderveld
Window / Updated
2024-10-28 → 2024-11-04 · Updated
2026-01-14
· v2
Open report →
31.21.132.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
31.21.132.0
Broadcast
31.21.132.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1539 , 5.4083
Hits / Errors
1
hits ·
0
errors
First / Last seen
2025-08-02 21:15 · 2025-08-02 21:15
Top ASN
AS50266 ·
Odido Netherlands B.V.
Top organization / ISP
Odido Netherlands
·
Odido Netherlands B.V.
Top geo
The Netherlands
·
Utrecht
·
Amersfoort
Window / Updated
2025-07-28 → 2025-08-04 · Updated
2026-01-14
· v2
Open report →
85.146.195.0/24
Risk Max
—
LOW
Footprint
0.391
%
Hits
1
Prefix / IP version
/24 · IPv4
Network
85.146.195.0
Broadcast
85.146.195.255
Observed IPs / Subnet size
1
observed ·
256
total
Centroid
52.1666 , 5.4112
Hits / Errors
1
hits ·
0
errors
First / Last seen
2025-04-20 21:30 · 2025-04-20 21:30
Top ASN
AS33915 ·
Vodafone Libertel B.V.
Top organization / ISP
Apotheek Poll B.v.
·
Vodafone Libertel B.V.
Top geo
The Netherlands
·
Utrecht
·
Amersfoort
Window / Updated
2025-04-14 → 2025-04-21 · Updated
2026-01-14
· v2
Open report →
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