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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: FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A. · Clear
Snapshot 2026-01-25 Results 12 Page 1 / 1

201.23.58.0/24

Risk Max — LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
201.23.58.0
Broadcast
201.23.58.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-30.0273 , -51.2353
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-11-06 09:53 · 2025-11-06 22:05
Top ASN
AS272710 · FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A.
Top organization / ISP
XPLAY MOBILE & FIBER LTDA · Fibrasil Infraestrutura E Fibra Otica S.A
Top geo
Brazil · Rio Grande do Sul · Porto Alegre
Window / Updated
2025-11-03 → 2025-11-10 · Updated 2026-01-14 · v2
Open report →

201.23.49.0/24

Risk Max — LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
201.23.49.0
Broadcast
201.23.49.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-22.6889 , -42.760850000000005
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-11-06 04:49 · 2025-11-06 14:22
Top ASN
AS272710 · FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A.
Top organization / ISP
SKY SERVIÇOS DE BANDA LARGA LTDA · Fibrasil Infraestrutura E Fibra Otica S.A
Top geo
Brazil · Rio de Janeiro · Petrópolis
Window / Updated
2025-11-03 → 2025-11-10 · Updated 2026-01-14 · v2
Open report →

201.23.36.0/24

Risk Max — LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
201.23.36.0
Broadcast
201.23.36.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-3.1032 , -60.0288
Hits / Errors
2 hits · 0 errors
First / Last seen
2025-10-28 02:33 · 2025-10-28 05:24
Top ASN
AS272710 · FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A.
Top organization / ISP
SKY SERVIÇOS DE BANDA LARGA LTDA · Fibrasil Infraestrutura E Fibra Otica S.A
Top geo
Brazil · Amazonas · Manaus
Window / Updated
2025-10-27 → 2025-11-03 · Updated 2026-01-14 · v2
Open report →

201.23.37.0/24

Risk Max — LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
201.23.37.0
Broadcast
201.23.37.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-14.8638 , -40.8408
Hits / Errors
3 hits · 0 errors
First / Last seen
2025-09-16 08:03 · 2025-09-21 16:01
Top ASN
AS272710 · FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A.
Top organization / ISP
SKY SERVIÇOS DE BANDA LARGA LTDA · Fibrasil Infraestrutura E Fibra Otica S.A
Top geo
Brazil · Bahia · Vitória da Conquista
Window / Updated
2025-09-15 → 2025-09-22 · Updated 2026-01-14 · v2
Open report →

201.23.40.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
201.23.40.0
Broadcast
201.23.40.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-1.345 , -48.4219
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-12-17 10:16 · 2025-12-17 10:16
Top ASN
AS272710 · FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A.
Top organization / ISP
SKY SERVIÇOS DE BANDA LARGA LTDA · Fibrasil Infraestrutura E Fibra Otica S.A
Top geo
Brazil · Pará · Belém
Window / Updated
2025-12-15 → 2025-12-22 · Updated 2026-01-14 · v2
Open report →

201.23.47.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
201.23.47.0
Broadcast
201.23.47.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-3.717 , -38.5287
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-12-17 08:12 · 2025-12-17 08:12
Top ASN
AS272710 · FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A.
Top organization / ISP
Fibrasil Infraestrutura E Fibra Otica S.A · Fibrasil Infraestrutura E Fibra Otica S.A.
Top geo
Brazil · Ceará · Fortaleza
Window / Updated
2025-12-15 → 2025-12-22 · Updated 2026-01-14 · v2
Open report →

201.23.61.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
201.23.61.0
Broadcast
201.23.61.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-27.6027 , -48.5541
Hits / Errors
1 hits · 1 errors
First / Last seen
2025-11-06 09:30 · 2025-11-06 09:30
Top ASN
AS272710 · FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A.
Top organization / ISP
SKY SERVIÇOS DE BANDA LARGA LTDA · Fibrasil Infraestrutura E Fibra Otica S.A
Top geo
Brazil · Santa Catarina · Florianópolis
Window / Updated
2025-11-03 → 2025-11-10 · Updated 2026-01-14 · v2
Open report →

201.23.53.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
201.23.53.0
Broadcast
201.23.53.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-2.6495 , -44.3044
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-11-06 05:26 · 2025-11-06 05:26
Top ASN
AS272710 · FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A.
Top organization / ISP
SKY SERVIÇOS DE BANDA LARGA LTDA · Fibrasil Infraestrutura E Fibra Otica S.A
Top geo
Brazil · Maranhão · São Luís
Window / Updated
2025-11-03 → 2025-11-10 · Updated 2026-01-14 · v2
Open report →

201.23.39.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
201.23.39.0
Broadcast
201.23.39.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-27.6769 , -52.2594
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-10-06 22:52 · 2025-10-06 22:52
Top ASN
AS272710 · FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A.
Top organization / ISP
SKY SERVIÇOS DE BANDA LARGA LTDA · Fibrasil Infraestrutura E Fibra Otica S.A
Top geo
Brazil · Rio Grande do Sul · Erechim
Window / Updated
2025-10-06 → 2025-10-13 · Updated 2026-01-14 · v2
Open report →

201.23.45.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
201.23.45.0
Broadcast
201.23.45.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-1.345 , -48.4219
Hits / Errors
1 hits · 1 errors
First / Last seen
2025-09-26 19:03 · 2025-09-26 19:03
Top ASN
AS272710 · FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A.
Top organization / ISP
Fibrasil Infraestrutura E Fibra Otica S.A · Fibrasil Infraestrutura E Fibra Otica S.A.
Top geo
Brazil · Pará · Belém
Window / Updated
2025-09-22 → 2025-09-29 · Updated 2026-01-14 · v2
Open report →

201.23.51.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
201.23.51.0
Broadcast
201.23.51.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-19.4658 , -44.2467
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-09-08 20:02 · 2025-09-08 20:02
Top ASN
AS272710 · FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A.
Top organization / ISP
Fibrasil Infraestrutura E Fibra Otica S.A · Fibrasil Infraestrutura E Fibra Otica S.A.
Top geo
Brazil · Minas Gerais · Sete Lagoas
Window / Updated
2025-09-08 → 2025-09-15 · Updated 2026-01-14 · v2
Open report →

201.23.55.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
201.23.55.0
Broadcast
201.23.55.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-10.1683 , -48.3264
Hits / Errors
1 hits · 1 errors
First / Last seen
2025-08-01 06:06 · 2025-08-01 06:06
Top ASN
AS272710 · FIBRASIL INFRAESTRUTURA E FIBRA OTICA S.A.
Top organization / ISP
SKY SERVIÇOS DE BANDA LARGA LTDA · Fibrasil Infraestrutura E Fibra Otica S.A
Top geo
Brazil · Tocantins · Palmas
Window / Updated
2025-07-28 → 2025-08-04 · Updated 2026-01-14 · v2
Open report →