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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: JSC "ER-Telecom Holding" Saint-Petersburg Branch · Clear
Snapshot 2026-01-21 Results 7 Page 1 / 1

188.187.49.0/24

Risk Max 1 LOW Footprint 0.391% Hits 9
Prefix / IP version
/24 · IPv4
Network
188.187.49.0
Broadcast
188.187.49.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
59.8983 , 30.2618
Hits / Errors
9 hits · 0 errors
First / Last seen
2024-05-22 13:35 · 2024-05-22 13:35
Top ASN
AS51570 · JSC ER-Telecom Holding
Top organization / ISP
JSC "ER-Telecom Holding" Saint-Petersburg Branch · CJSC "ER-Telecom Holding" Saint-Petersburg branch
Top geo
Russia · St.-Petersburg · St Petersburg
Window / Updated
2024-05-20 → 2024-05-27 · Updated 2026-01-14 · v2
Open report →

5.16.99.0/24

Risk Max — LOW Footprint 0.391% Hits 58
Prefix / IP version
/24 · IPv4
Network
5.16.99.0
Broadcast
5.16.99.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
60.0114 , 30.2962
Hits / Errors
58 hits · 0 errors
First / Last seen
2025-08-02 12:15 · 2025-08-02 12:15
Top ASN
AS51570 · JSC ER-Telecom Holding
Top organization / ISP
JSC "ER-Telecom Holding" Saint-Petersburg Branch · JSC "ER-Telecom Holding"
Top geo
Russia · St.-Petersburg · St Petersburg
Window / Updated
2025-07-28 → 2025-08-04 · Updated 2026-01-14 · v2
Open report →

109.195.93.0/24

Risk Max — LOW Footprint 0.391% Hits 15
Prefix / IP version
/24 · IPv4
Network
109.195.93.0
Broadcast
109.195.93.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
59.8983 , 30.2618
Hits / Errors
15 hits · 9 errors
First / Last seen
2025-09-23 04:21 · 2025-09-26 10:00
Top ASN
AS51570 · JSC ER-Telecom Holding
Top organization / ISP
CJSC "ER-Telecom Holding" Saint-Petersburg Branch · JSC "ER-Telecom Holding"
Top geo
Russia · St.-Petersburg · St Petersburg
Window / Updated
2025-09-22 → 2025-09-29 · Updated 2026-01-14 · v2
Open report →

5.16.34.0/24

Risk Max — LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
5.16.34.0
Broadcast
5.16.34.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
59.8983 , 30.2618
Hits / Errors
2 hits · 2 errors
First / Last seen
2025-09-08 20:03 · 2025-09-08 20:03
Top ASN
AS51570 · JSC ER-Telecom Holding
Top organization / ISP
Perspectiva Ltd · CJSC "ER-Telecom Holding" Saint-Petersburg branch
Top geo
Russia · St.-Petersburg · St Petersburg
Window / Updated
2025-09-08 → 2025-09-15 · Updated 2026-01-14 · v2
Open report →

188.187.109.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
188.187.109.0
Broadcast
188.187.109.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
59.8983 , 30.2618
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-09-23 07:23 · 2025-09-23 07:23
Top ASN
AS51570 · JSC ER-Telecom Holding
Top organization / ISP
JSC "ER-Telecom Holding" Saint-Petersburg Branch · CJSC "ER-Telecom Holding" Saint-Petersburg branch
Top geo
Russia · St.-Petersburg · St Petersburg
Window / Updated
2025-09-22 → 2025-09-29 · Updated 2026-01-14 · v2
Open report →

5.16.125.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
5.16.125.0
Broadcast
5.16.125.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
59.8983 , 30.2618
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-05-06 10:05 · 2025-05-06 10:05
Top ASN
AS51570 · JSC ER-Telecom Holding
Top organization / ISP
JSC "ER-Telecom Holding" · JSC "ER-Telecom Holding" Saint-Petersburg branch
Top geo
Russia · St.-Petersburg · St Petersburg
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2
Open report →

109.195.87.0/24

Risk Max — LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
109.195.87.0
Broadcast
109.195.87.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
59.9417 , 30.3096
Hits / Errors
1 hits · 0 errors
First / Last seen
2025-04-20 19:07 · 2025-04-20 19:07
Top ASN
AS51570 · JSC ER-Telecom Holding
Top organization / ISP
CJSC "ER-Telecom Holding" Saint-Petersburg Branch · JSC "ER-Telecom Holding"
Top geo
Russia · St.-Petersburg · St Petersburg
Window / Updated
2025-04-14 → 2025-04-21 · Updated 2026-01-14 · v2
Open report →