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.

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Active filter: OPHL · Clear

Snapshot 2026-03-07 Results 23 Page 1 / 1

49.51.141.0/24

Risk Max 1 LOW Footprint 0.391% Hits 11

Prefix / IP version

/24 · IPv4

Network

49.51.141.0

Broadcast

49.51.141.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

50.116899999999994 , 8.6837

Hits / Errors

11 hits · 1 errors

First / Last seen

2026-02-22 02:00 · 2026-03-02 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

Germany · Hesse · Frankfurt am Main

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.73.0/24

Risk Max 1 LOW Footprint 0.391% Hits 7

Prefix / IP version

/24 · IPv4

Network

49.51.73.0

Broadcast

49.51.73.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

7 hits · 0 errors

First / Last seen

2026-02-22 02:00 · 2026-03-01 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.38.0/24

Risk Max 1 LOW Footprint 0.391% Hits 7

Prefix / IP version

/24 · IPv4

Network

49.51.38.0

Broadcast

49.51.38.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

7 hits · 0 errors

First / Last seen

2026-02-23 02:00 · 2026-02-27 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.183.0/24

Risk Max — LOW Footprint 1.172% Hits 12

Prefix / IP version

/24 · IPv4

Network

49.51.183.0

Broadcast

49.51.183.255

Observed IPs / Subnet size

3 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

12 hits · 1 errors

First / Last seen

2026-02-22 02:00 · 2026-03-02 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.253.0/24

Risk Max — LOW Footprint 0.781% Hits 10

Prefix / IP version

/24 · IPv4

Network

49.51.253.0

Broadcast

49.51.253.255

Observed IPs / Subnet size

2 observed · 256 total

Centroid

37.352999999999994 , -121.9544

Hits / Errors

10 hits · 0 errors

First / Last seen

2026-02-22 02:00 · 2026-03-02 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.243.0/24

Risk Max — LOW Footprint 0.781% Hits 10

Prefix / IP version

/24 · IPv4

Network

49.51.243.0

Broadcast

49.51.243.255

Observed IPs / Subnet size

2 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

10 hits · 0 errors

First / Last seen

2026-02-22 02:00 · 2026-03-01 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.72.0/24

Risk Max — LOW Footprint 0.781% Hits 9

Prefix / IP version

/24 · IPv4

Network

49.51.72.0

Broadcast

49.51.72.255

Observed IPs / Subnet size

2 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

9 hits · 0 errors

First / Last seen

2026-02-22 02:00 · 2026-03-02 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.233.0/24

Risk Max — LOW Footprint 0.781% Hits 7

Prefix / IP version

/24 · IPv4

Network

49.51.233.0

Broadcast

49.51.233.255

Observed IPs / Subnet size

2 observed · 256 total

Centroid

37.353 , -121.95439999999999

Hits / Errors

7 hits · 0 errors

First / Last seen

2026-02-25 02:00 · 2026-03-01 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.166.0/24

Risk Max — LOW Footprint 0.391% Hits 8

Prefix / IP version

/24 · IPv4

Network

49.51.166.0

Broadcast

49.51.166.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

50.1169 , 8.6837

Hits / Errors

8 hits · 1 errors

First / Last seen

2026-02-22 02:00 · 2026-03-01 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

Germany · Hesse · Frankfurt am Main

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.203.0/24

Risk Max — LOW Footprint 0.391% Hits 6

Prefix / IP version

/24 · IPv4

Network

49.51.203.0

Broadcast

49.51.203.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

6 hits · 0 errors

First / Last seen

2026-02-23 02:00 · 2026-03-02 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.204.0/24

Risk Max — LOW Footprint 0.391% Hits 5

Prefix / IP version

/24 · IPv4

Network

49.51.204.0

Broadcast

49.51.204.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

5 hits · 1 errors

First / Last seen

2026-02-26 02:00 · 2026-03-01 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.47.0/24

Risk Max — LOW Footprint 0.391% Hits 4

Prefix / IP version

/24 · IPv4

Network

49.51.47.0

Broadcast

49.51.47.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

4 hits · 0 errors

First / Last seen

2026-02-24 02:00 · 2026-03-02 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.50.0/24

Risk Max — LOW Footprint 0.391% Hits 4

Prefix / IP version

/24 · IPv4

Network

49.51.50.0

Broadcast

49.51.50.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

4 hits · 0 errors

First / Last seen

2026-02-26 02:00 · 2026-03-02 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.195.0/24

Risk Max — LOW Footprint 0.391% Hits 4

Prefix / IP version

/24 · IPv4

Network

49.51.195.0

Broadcast

49.51.195.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

4 hits · 0 errors

First / Last seen

2026-02-25 02:00 · 2026-03-01 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.196.0/24

Risk Max — LOW Footprint 0.391% Hits 4

Prefix / IP version

/24 · IPv4

Network

49.51.196.0

Broadcast

49.51.196.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

4 hits · 0 errors

First / Last seen

2026-02-24 02:00 · 2026-03-01 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.52.0/24

Risk Max — LOW Footprint 0.391% Hits 4

Prefix / IP version

/24 · IPv4

Network

49.51.52.0

Broadcast

49.51.52.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

4 hits · 0 errors

First / Last seen

2026-02-23 02:00 · 2026-02-28 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.245.0/24

Risk Max — LOW Footprint 0.391% Hits 3

Prefix / IP version

/24 · IPv4

Network

49.51.245.0

Broadcast

49.51.245.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

3 hits · 0 errors

First / Last seen

2026-02-22 02:00 · 2026-03-02 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.180.0/24

Risk Max — LOW Footprint 0.391% Hits 3

Prefix / IP version

/24 · IPv4

Network

49.51.180.0

Broadcast

49.51.180.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

3 hits · 0 errors

First / Last seen

2026-02-22 02:00 · 2026-03-01 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.132.0/24

Risk Max — LOW Footprint 0.391% Hits 3

Prefix / IP version

/24 · IPv4

Network

49.51.132.0

Broadcast

49.51.132.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

50.11690000000001 , 8.6837

Hits / Errors

3 hits · 0 errors

First / Last seen

2026-02-24 02:00 · 2026-02-28 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

Germany · Hesse · Frankfurt am Main

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.36.0/24

Risk Max — LOW Footprint 0.391% Hits 3

Prefix / IP version

/24 · IPv4

Network

49.51.36.0

Broadcast

49.51.36.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

3 hits · 0 errors

First / Last seen

2026-02-23 02:00 · 2026-02-28 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.33.0/24

Risk Max — LOW Footprint 0.391% Hits 2

Prefix / IP version

/24 · IPv4

Network

49.51.33.0

Broadcast

49.51.33.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

2 hits · 0 errors

First / Last seen

2026-02-23 02:00 · 2026-03-01 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.178.0/24

Risk Max — LOW Footprint 0.391% Hits 2

Prefix / IP version

/24 · IPv4

Network

49.51.178.0

Broadcast

49.51.178.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

2 hits · 0 errors

First / Last seen

2026-02-26 02:00 · 2026-02-28 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →

49.51.39.0/24

Risk Max — LOW Footprint 0.391% Hits 1

Prefix / IP version

/24 · IPv4

Network

49.51.39.0

Broadcast

49.51.39.255

Observed IPs / Subnet size

1 observed · 256 total

Centroid

37.353 , -121.9544

Hits / Errors

1 hits · 0 errors

First / Last seen

2026-03-01 02:00 · 2026-03-02 02:00

Top ASN

AS132203 · Tencent Building, Kejizhongyi Avenue

Top organization / ISP

Tencent cloud computing (Beijing) Co., Ltd. · OPHL

Top geo

United States · California · Santa Clara

Window / Updated

2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

Open report →