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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: Fastnet Comunicacao Eireli - ME · Clear
Snapshot 2026-03-06 Results 4 Page 1 / 1

143.0.18.0/24

Risk Max — LOW Footprint 3.125% Hits 10
Prefix / IP version
/24 · IPv4
Network
143.0.18.0
Broadcast
143.0.18.255
Observed IPs / Subnet size
8 observed · 256 total
Centroid
-23.6266 , -46.56380000000001
Hits / Errors
10 hits · 2 errors
First / Last seen
2026-02-22 02:00 · 2026-03-02 02:00
Top ASN
AS263990 · FASTNET COMUNICACAO EIRELI - ME
Top organization / ISP
Fastnet Comunicacao Eireli - ME · Fastnet Comunicacao Eireli - ME
Top geo
Brazil · São Paulo · Santo André
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

143.0.17.0/24

Risk Max — LOW Footprint 2.734% Hits 11
Prefix / IP version
/24 · IPv4
Network
143.0.17.0
Broadcast
143.0.17.255
Observed IPs / Subnet size
7 observed · 256 total
Centroid
-23.6266 , -46.56380000000001
Hits / Errors
11 hits · 1 errors
First / Last seen
2026-02-23 02:00 · 2026-03-02 02:00
Top ASN
AS263990 · FASTNET COMUNICACAO EIRELI - ME
Top organization / ISP
Fastnet Comunicacao Eireli - ME · Fastnet Comunicacao Eireli - ME
Top geo
Brazil · São Paulo · Santo André
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

143.0.19.0/24

Risk Max — LOW Footprint 2.344% Hits 12
Prefix / IP version
/24 · IPv4
Network
143.0.19.0
Broadcast
143.0.19.255
Observed IPs / Subnet size
6 observed · 256 total
Centroid
-23.6266 , -46.56380000000001
Hits / Errors
12 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-03-02 02:00
Top ASN
AS263990 · FASTNET COMUNICACAO EIRELI - ME
Top organization / ISP
Fastnet Comunicacao Eireli - ME · Fastnet Comunicacao Eireli - ME
Top geo
Brazil · São Paulo · Santo André
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →

143.0.16.0/24

Risk Max — LOW Footprint 1.953% Hits 6
Prefix / IP version
/24 · IPv4
Network
143.0.16.0
Broadcast
143.0.16.255
Observed IPs / Subnet size
5 observed · 256 total
Centroid
-23.6266 , -46.56380000000001
Hits / Errors
6 hits · 0 errors
First / Last seen
2026-02-26 02:00 · 2026-02-28 02:00
Top ASN
AS263990 · FASTNET COMUNICACAO EIRELI - ME
Top organization / ISP
Fastnet Comunicacao Eireli - ME · Fastnet Comunicacao Eireli - ME
Top geo
Brazil · São Paulo · Santo André
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2
Open report →