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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.

123.21.196.0/24

Risk Max LOW Footprint 4.688% Hits 16
Prefix / IP version
/24 · IPv4
Network
123.21.196.0
Broadcast
123.21.196.255
Observed IPs / Subnet size
12 observed · 256 total
Centroid
10.822000000000001 , 106.62570000000002
Hits / Errors
16 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.21.194.0/24

Risk Max LOW Footprint 4.688% Hits 16
Prefix / IP version
/24 · IPv4
Network
123.21.194.0
Broadcast
123.21.194.255
Observed IPs / Subnet size
12 observed · 256 total
Centroid
10.822000000000001 , 106.62570000000002
Hits / Errors
16 hits · 1 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

222.253.253.0/24

Risk Max LOW Footprint 4.688% Hits 16
Prefix / IP version
/24 · IPv4
Network
222.253.253.0
Broadcast
222.253.253.255
Observed IPs / Subnet size
12 observed · 256 total
Centroid
10.822 , 106.62570000000001
Hits / Errors
16 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-12 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

222.253.177.0/24

Risk Max LOW Footprint 4.688% Hits 15
Prefix / IP version
/24 · IPv4
Network
222.253.177.0
Broadcast
222.253.177.255
Observed IPs / Subnet size
12 observed · 256 total
Centroid
10.822000000000001 , 106.62570000000002
Hits / Errors
15 hits · 1 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.68.0/24

Risk Max LOW Footprint 4.688% Hits 15
Prefix / IP version
/24 · IPv4
Network
123.17.68.0
Broadcast
123.17.68.255
Observed IPs / Subnet size
12 observed · 256 total
Centroid
21.255279999999996 , 105.63718000000003
Hits / Errors
15 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-12 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.183.0/24

Risk Max LOW Footprint 4.297% Hits 18
Prefix / IP version
/24 · IPv4
Network
123.17.183.0
Broadcast
123.17.183.255
Observed IPs / Subnet size
11 observed · 256 total
Centroid
21.236777777777778 , 105.54528333333333
Hits / Errors
18 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.182.0/24

Risk Max LOW Footprint 4.297% Hits 18
Prefix / IP version
/24 · IPv4
Network
123.17.182.0
Broadcast
123.17.182.255
Observed IPs / Subnet size
11 observed · 256 total
Centroid
21.276355555555554 , 105.4822722222222
Hits / Errors
18 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.23.141.0/24

Risk Max LOW Footprint 4.297% Hits 17
Prefix / IP version
/24 · IPv4
Network
123.23.141.0
Broadcast
123.23.141.255
Observed IPs / Subnet size
11 observed · 256 total
Centroid
21.0394 , 105.793
Hits / Errors
17 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Top geo
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.21.199.0/24

Risk Max LOW Footprint 4.297% Hits 17
Prefix / IP version
/24 · IPv4
Network
123.21.199.0
Broadcast
123.21.199.255
Observed IPs / Subnet size
11 observed · 256 total
Centroid
10.822000000000001 , 106.62570000000002
Hits / Errors
17 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.21.23.0/24

Risk Max LOW Footprint 4.297% Hits 16
Prefix / IP version
/24 · IPv4
Network
123.21.23.0
Broadcast
123.21.23.255
Observed IPs / Subnet size
11 observed · 256 total
Centroid
10.822 , 106.62570000000001
Hits / Errors
16 hits · 1 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.21.28.0/24

Risk Max LOW Footprint 4.297% Hits 16
Prefix / IP version
/24 · IPv4
Network
123.21.28.0
Broadcast
123.21.28.255
Observed IPs / Subnet size
11 observed · 256 total
Centroid
10.822000000000001 , 106.62570000000002
Hits / Errors
16 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.176.0/24

Risk Max LOW Footprint 4.297% Hits 15
Prefix / IP version
/24 · IPv4
Network
123.17.176.0
Broadcast
123.17.176.255
Observed IPs / Subnet size
11 observed · 256 total
Centroid
21.11002666666667 , 105.76038666666669
Hits / Errors
15 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Top geo
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.23.237.0/24

Risk Max LOW Footprint 4.297% Hits 13
Prefix / IP version
/24 · IPv4
Network
123.23.237.0
Broadcast
123.23.237.255
Observed IPs / Subnet size
11 observed · 256 total
Centroid
14.751769230769233 , 106.30543076923078
Hits / Errors
13 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.181.0/24

Risk Max LOW Footprint 4.297% Hits 12
Prefix / IP version
/24 · IPv4
Network
123.17.181.0
Broadcast
123.17.181.255
Observed IPs / Subnet size
11 observed · 256 total
Centroid
21.201508333333333 , 105.68459166666663
Hits / Errors
12 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

222.253.214.0/24

Risk Max LOW Footprint 3.906% Hits 17
Prefix / IP version
/24 · IPv4
Network
222.253.214.0
Broadcast
222.253.214.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
10.822 , 106.6257
Hits / Errors
17 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.21.193.0/24

Risk Max LOW Footprint 3.906% Hits 17
Prefix / IP version
/24 · IPv4
Network
123.21.193.0
Broadcast
123.21.193.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
10.822 , 106.6257
Hits / Errors
17 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

222.253.248.0/24

Risk Max LOW Footprint 3.906% Hits 16
Prefix / IP version
/24 · IPv4
Network
222.253.248.0
Broadcast
222.253.248.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
10.822 , 106.6257
Hits / Errors
16 hits · 1 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.19.184.0/24

Risk Max LOW Footprint 3.906% Hits 15
Prefix / IP version
/24 · IPv4
Network
123.19.184.0
Broadcast
123.19.184.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
16.0685 , 108.22150000000002
Hits / Errors
15 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Top geo
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.19.182.0/24

Risk Max LOW Footprint 3.906% Hits 15
Prefix / IP version
/24 · IPv4
Network
123.19.182.0
Broadcast
123.19.182.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
16.0685 , 108.22150000000002
Hits / Errors
15 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Top geo
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.21.29.0/24

Risk Max LOW Footprint 3.906% Hits 15
Prefix / IP version
/24 · IPv4
Network
123.21.29.0
Broadcast
123.21.29.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
10.822 , 106.62570000000002
Hits / Errors
15 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.178.0/24

Risk Max LOW Footprint 3.906% Hits 15
Prefix / IP version
/24 · IPv4
Network
123.17.178.0
Broadcast
123.17.178.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
21.156906666666668 , 105.76558000000003
Hits / Errors
15 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-12 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.177.0/24

Risk Max LOW Footprint 3.906% Hits 14
Prefix / IP version
/24 · IPv4
Network
123.17.177.0
Broadcast
123.17.177.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
21.17900714285714 , 105.6135
Hits / Errors
14 hits · 1 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Top geo
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.191.0/24

Risk Max LOW Footprint 3.906% Hits 14
Prefix / IP version
/24 · IPv4
Network
123.17.191.0
Broadcast
123.17.191.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
20.40002857142857 , 105.80127142857144
Hits / Errors
14 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.184.0/24

Risk Max LOW Footprint 3.906% Hits 14
Prefix / IP version
/24 · IPv4
Network
123.17.184.0
Broadcast
123.17.184.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
21.242942857142857 , 105.46894285714286
Hits / Errors
14 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.21.22.0/24

Risk Max LOW Footprint 3.906% Hits 14
Prefix / IP version
/24 · IPv4
Network
123.21.22.0
Broadcast
123.21.22.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
10.822000000000001 , 106.62570000000002
Hits / Errors
14 hits · 1 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.21.19.0/24

Risk Max LOW Footprint 3.906% Hits 13
Prefix / IP version
/24 · IPv4
Network
123.21.19.0
Broadcast
123.21.19.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
10.822000000000001 , 106.62570000000002
Hits / Errors
13 hits · 1 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.23.228.0/24

Risk Max LOW Footprint 3.906% Hits 12
Prefix / IP version
/24 · IPv4
Network
123.23.228.0
Broadcast
123.23.228.255
Observed IPs / Subnet size
10 observed · 256 total
Centroid
13.376350000000002 , 106.417525
Hits / Errors
12 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

222.253.244.0/24

Risk Max LOW Footprint 3.516% Hits 15
Prefix / IP version
/24 · IPv4
Network
222.253.244.0
Broadcast
222.253.244.255
Observed IPs / Subnet size
9 observed · 256 total
Centroid
10.822 , 106.62570000000001
Hits / Errors
15 hits · 1 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.188.0/24

Risk Max LOW Footprint 3.516% Hits 14
Prefix / IP version
/24 · IPv4
Network
123.17.188.0
Broadcast
123.17.188.255
Observed IPs / Subnet size
9 observed · 256 total
Centroid
21.280778571428574 , 105.45147142857145
Hits / Errors
14 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.23.140.0/24

Risk Max LOW Footprint 3.516% Hits 14
Prefix / IP version
/24 · IPv4
Network
123.23.140.0
Broadcast
123.23.140.255
Observed IPs / Subnet size
9 observed · 256 total
Centroid
9.948270000000003 , 106.516
Hits / Errors
14 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.23.236.0/24

Risk Max LOW Footprint 3.516% Hits 14
Prefix / IP version
/24 · IPv4
Network
123.23.236.0
Broadcast
123.23.236.255
Observed IPs / Subnet size
9 observed · 256 total
Centroid
12.281628571428572 , 106.50674285714285
Hits / Errors
14 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.23.137.0/24

Risk Max LOW Footprint 3.516% Hits 14
Prefix / IP version
/24 · IPv4
Network
123.23.137.0
Broadcast
123.23.137.255
Observed IPs / Subnet size
9 observed · 256 total
Centroid
18.234314285714284 , 106.5684285714286
Hits / Errors
14 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Top geo
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

222.253.242.0/24

Risk Max LOW Footprint 3.516% Hits 13
Prefix / IP version
/24 · IPv4
Network
222.253.242.0
Broadcast
222.253.242.255
Observed IPs / Subnet size
9 observed · 256 total
Centroid
10.822000000000001 , 106.62570000000002
Hits / Errors
13 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-12 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

222.253.220.0/24

Risk Max LOW Footprint 3.516% Hits 12
Prefix / IP version
/24 · IPv4
Network
222.253.220.0
Broadcast
222.253.220.255
Observed IPs / Subnet size
9 observed · 256 total
Centroid
10.822000000000001 , 106.6257
Hits / Errors
12 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

222.253.229.0/24

Risk Max LOW Footprint 3.516% Hits 12
Prefix / IP version
/24 · IPv4
Network
222.253.229.0
Broadcast
222.253.229.255
Observed IPs / Subnet size
9 observed · 256 total
Centroid
10.821999999999997 , 106.62570000000001
Hits / Errors
12 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.70.0/24

Risk Max LOW Footprint 3.516% Hits 11
Prefix / IP version
/24 · IPv4
Network
123.17.70.0
Broadcast
123.17.70.255
Observed IPs / Subnet size
9 observed · 256 total
Centroid
21.111563636363638 , 105.7435
Hits / Errors
11 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-12 02:00
Top ASN
AS45899 · VNPT Corp
Top geo
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.76.0/24

Risk Max LOW Footprint 3.125% Hits 16
Prefix / IP version
/24 · IPv4
Network
123.17.76.0
Broadcast
123.17.76.255
Observed IPs / Subnet size
8 observed · 256 total
Centroid
21.1490375 , 105.72908125000001
Hits / Errors
16 hits · 0 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Top geo
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.21.24.0/24

Risk Max LOW Footprint 3.125% Hits 15
Prefix / IP version
/24 · IPv4
Network
123.21.24.0
Broadcast
123.21.24.255
Observed IPs / Subnet size
8 observed · 256 total
Centroid
10.822 , 106.62570000000002
Hits / Errors
15 hits · 1 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.23.229.0/24

Risk Max LOW Footprint 3.125% Hits 13
Prefix / IP version
/24 · IPv4
Network
123.23.229.0
Broadcast
123.23.229.255
Observed IPs / Subnet size
8 observed · 256 total
Centroid
12.393907692307693 , 106.4975923076923
Hits / Errors
13 hits · 1 errors
First / Last seen
2026-03-08 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2

123.17.69.0/24

Risk Max LOW Footprint 3.125% Hits 13
Prefix / IP version
/24 · IPv4
Network
123.17.69.0
Broadcast
123.17.69.255
Observed IPs / Subnet size
8 observed · 256 total
Centroid
21.16152307692308 , 105.70923076923077
Hits / Errors
13 hits · 0 errors
First / Last seen
2026-03-10 02:00 · 2026-03-13 02:00
Top ASN
AS45899 · VNPT Corp
Top geo
Window / Updated
2026-03-09 → 2026-03-16 · Updated 2026-03-18 · v2
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