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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.
Active filter: SFR Infra · Clear
Snapshot 2026-03-10 Results 142 Page 4 / 4

37.67.99.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.67.99.0
Broadcast
37.67.99.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
48.7719 , 2.0176
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Île-de-France · Trappes
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.66.198.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.66.198.0
Broadcast
37.66.198.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
50.6375 , 3.0542
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Hauts-de-France · Lille
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.65.31.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.65.31.0
Broadcast
37.65.31.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
50.7043 , 2.83506
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Hauts-de-France · Nieppe
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.66.163.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.66.163.0
Broadcast
37.66.163.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
49.9007 , 2.2968
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Hauts-de-France · Amiens
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.69.28.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.69.28.0
Broadcast
37.69.28.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
48.8051 , 2.4197
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Île-de-France · Alfortville
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.65.18.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.65.18.0
Broadcast
37.65.18.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
44.3945 , -1.16721
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Nouvelle-Aquitaine · Biscarrosse
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.66.2.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.66.2.0
Broadcast
37.66.2.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
48.7416 , 2.747
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Île-de-France · Gretz-Armainvilliers
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.66.170.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.66.170.0
Broadcast
37.66.170.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
49.4429 , 1.1003
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Normandy · Rouen
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.66.187.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.66.187.0
Broadcast
37.66.187.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
48.8051 , 2.4197
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Île-de-France · Alfortville
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.66.55.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.66.55.0
Broadcast
37.66.55.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
45.7838 , 3.0966
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Rhône-Alpes · Clermont-Ferrand
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.66.148.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.66.148.0
Broadcast
37.66.148.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
50.6977 , 3.1786
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Hauts-de-France · Roubaix
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.66.51.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.66.51.0
Broadcast
37.66.51.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
45.7838 , 3.0966
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Rhône-Alpes · Clermont-Ferrand
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.66.60.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.66.60.0
Broadcast
37.66.60.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
45.7838 , 3.0966
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Rhône-Alpes · Clermont-Ferrand
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.65.14.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.65.14.0
Broadcast
37.65.14.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
48.8954 , 2.2574
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Île-de-France · Courbevoie
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.65.7.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.65.7.0
Broadcast
37.65.7.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
47.2167 , 5.35
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Bourgogne · Villers-les-Pots
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.66.149.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.66.149.0
Broadcast
37.66.149.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
50.6977 , 3.1786
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Hauts-de-France · Roubaix
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.65.123.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.65.123.0
Broadcast
37.65.123.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.6046 , 1.4451
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Occitanie · Toulouse
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.65.113.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.65.113.0
Broadcast
37.65.113.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
46.1075 , 0.91074
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Nouvelle-Aquitaine · Mézières-sur-Issoire
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.66.46.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.66.46.0
Broadcast
37.66.46.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.3736 , 5.3547
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Provence-Alpes-Côte d'Azur · Marseille
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.65.55.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.65.55.0
Broadcast
37.65.55.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
49.1193 , 6.1702
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Grand Est · Metz
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.67.159.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.67.159.0
Broadcast
37.67.159.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
48.8558 , 2.3494
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Île-de-France · Paris
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

37.66.153.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
37.66.153.0
Broadcast
37.66.153.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
43.1263 , 5.9257
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS15557 · Societe Francaise Du Radiotelephone - SFR SA
Top organization / ISP
SFR Infra · Societe Francaise Du Radiotelephone - SFR SA
Top geo
France · Provence-Alpes-Côte d'Azur · Toulon
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →
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