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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.

104.28.240.0/24

Risk Max LOW Footprint 1.953% Hits 5
Prefix / IP version
/24 · IPv4
Network
104.28.240.0
Broadcast
104.28.240.255
Observed IPs / Subnet size
5 observed · 256 total
Centroid
6.621099999999998 , 67.54527999999999
Hits / Errors
5 hits · 1 errors
First / Last seen
2026-02-23 02:00 · 2026-02-27 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.251.0/24

Risk Max LOW Footprint 1.562% Hits 6
Prefix / IP version
/24 · IPv4
Network
104.28.251.0
Broadcast
104.28.251.255
Observed IPs / Subnet size
4 observed · 256 total
Centroid
37.84421666666666 , 34.209
Hits / Errors
6 hits · 0 errors
First / Last seen
2026-02-23 02:00 · 2026-02-28 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.130.0/24

Risk Max LOW Footprint 1.172% Hits 5
Prefix / IP version
/24 · IPv4
Network
104.28.130.0
Broadcast
104.28.130.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
35.16432 , 31.632800000000003
Hits / Errors
5 hits · 3 errors
First / Last seen
2026-02-22 02:00 · 2026-03-01 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.198.0/24

Risk Max LOW Footprint 1.172% Hits 4
Prefix / IP version
/24 · IPv4
Network
104.28.198.0
Broadcast
104.28.198.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
-23.440275 , -46.02495
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-02-24 02:00 · 2026-03-02 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.239.0/24

Risk Max LOW Footprint 1.172% Hits 4
Prefix / IP version
/24 · IPv4
Network
104.28.239.0
Broadcast
104.28.239.255
Observed IPs / Subnet size
3 observed · 256 total
Centroid
-20.4145 , -12.352224999999999
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-28 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.202.0/24

Risk Max LOW Footprint 0.781% Hits 10
Prefix / IP version
/24 · IPv4
Network
104.28.202.0
Broadcast
104.28.202.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-2.91717 , -32.09487
Hits / Errors
10 hits · 2 errors
First / Last seen
2026-02-22 02:00 · 2026-02-25 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.219.0/24

Risk Max LOW Footprint 0.781% Hits 5
Prefix / IP version
/24 · IPv4
Network
104.28.219.0
Broadcast
104.28.219.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
41.3253 , 19.8184
Hits / Errors
5 hits · 0 errors
First / Last seen
2026-02-23 02:00 · 2026-03-02 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.247.0/24

Risk Max LOW Footprint 0.781% Hits 4
Prefix / IP version
/24 · IPv4
Network
104.28.247.0
Broadcast
104.28.247.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
33.3364 , 44.4004
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-03-02 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.205.0/24

Risk Max LOW Footprint 0.781% Hits 4
Prefix / IP version
/24 · IPv4
Network
104.28.205.0
Broadcast
104.28.205.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-9.69205 , 28.801349999999996
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-02-23 02:00 · 2026-02-27 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.208.0/24

Risk Max LOW Footprint 0.781% Hits 3
Prefix / IP version
/24 · IPv4
Network
104.28.208.0
Broadcast
104.28.208.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-7.771733333333334 , -1.0537000000000016
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-27 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.253.0/24

Risk Max LOW Footprint 0.781% Hits 3
Prefix / IP version
/24 · IPv4
Network
104.28.253.0
Broadcast
104.28.253.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
36.7296 , 3.0905
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-27 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.211.0/24

Risk Max LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
104.28.211.0
Broadcast
104.28.211.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
-1.2596500000000006 , -66.70525
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-03-01 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.214.0/24

Risk Max LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
104.28.214.0
Broadcast
104.28.214.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
12.398700000000002 , -12.264900000000004
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-02-23 02:00 · 2026-02-26 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.60.0/24

Risk Max LOW Footprint 0.781% Hits 2
Prefix / IP version
/24 · IPv4
Network
104.28.60.0
Broadcast
104.28.60.255
Observed IPs / Subnet size
2 observed · 256 total
Centroid
32.0804 , 34.7807
Hits / Errors
2 hits · 2 errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.250.0/24

Risk Max LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
104.28.250.0
Broadcast
104.28.250.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-12.9637 , -38.4903
Hits / Errors
4 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-03-01 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.131.0/24

Risk Max LOW Footprint 0.391% Hits 4
Prefix / IP version
/24 · IPv4
Network
104.28.131.0
Broadcast
104.28.131.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
32.0804 , 34.7807
Hits / Errors
4 hits · 4 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.215.0/24

Risk Max LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
104.28.215.0
Broadcast
104.28.215.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
33.3364 , 44.4004
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-03-02 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.88.0/24

Risk Max LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
104.28.88.0
Broadcast
104.28.88.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
41.3891 , 2.1606
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-02-28 02:00 · 2026-03-01 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.80.0/24

Risk Max LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
104.28.80.0
Broadcast
104.28.80.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
32.0804 , 34.7807
Hits / Errors
3 hits · 2 errors
First / Last seen
2026-02-23 02:00 · 2026-02-25 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.233.0/24

Risk Max LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
104.28.233.0
Broadcast
104.28.233.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
48.024300000000004 , 37.8115
Hits / Errors
3 hits · 0 errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

162.158.249.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
162.158.249.0
Broadcast
162.158.249.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
14.5995 , 120.9842
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.210.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
104.28.210.0
Broadcast
104.28.210.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
10.9413 , 106.8221
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

162.158.128.0/24

Risk Max LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
162.158.128.0
Broadcast
162.158.128.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
23.8103 , 90.4125
Hits / Errors
2 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS14789 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.164.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.164.0
Broadcast
104.28.164.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-34.8638 , -58.5168
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-03-01 02:00 · 2026-03-02 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

172.68.239.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
172.68.239.0
Broadcast
172.68.239.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
12.9715 , 77.5945
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-03-01 02:00 · 2026-03-02 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.155.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.155.0
Broadcast
104.28.155.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
12.9855 , 80.2612
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-28 02:00 · 2026-03-01 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.209.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.209.0
Broadcast
104.28.209.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
52.3724 , 9.7413
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-28 02:00 · 2026-03-01 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.221.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.221.0
Broadcast
104.28.221.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-22.9072 , -43.1883
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-28 02:00 · 2026-03-01 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.152.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.152.0
Broadcast
104.28.152.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
19.4324 , -99.1229
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.163.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.163.0
Broadcast
104.28.163.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-23.5475 , -46.6361
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.244.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.244.0
Broadcast
104.28.244.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
49.982 , 36.2566
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-27 02:00 · 2026-02-28 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.229.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.229.0
Broadcast
104.28.229.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-26.2309 , 28.0583
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-26 02:00 · 2026-02-27 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.243.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.243.0
Broadcast
104.28.243.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-23.695 , -46.5616
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-25 02:00 · 2026-02-26 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.224.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.224.0
Broadcast
104.28.224.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
40.4153 , -3.694
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-24 02:00 · 2026-02-25 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.203.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.203.0
Broadcast
104.28.203.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
10.4873 , -66.8738
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.230.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.230.0
Broadcast
104.28.230.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-23.5475 , -46.6361
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.242.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.242.0
Broadcast
104.28.242.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-20.3163 , -40.3457
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-23 02:00 · 2026-02-24 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.207.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.207.0
Broadcast
104.28.207.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
45.0729 , 7.689
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.235.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.235.0
Broadcast
104.28.235.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
-23.9569 , -46.3446
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2

104.28.237.0/24

Risk Max LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
104.28.237.0
Broadcast
104.28.237.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
49.839 , 24.0191
Hits / Errors
1 hits · 0 errors
First / Last seen
2026-02-22 02:00 · 2026-02-23 02:00
Top ASN
AS13335 · Cloudflare, Inc.
Top organization / ISP
Top geo
Ukraine · Lviv · Lviv
Window / Updated
2026-02-23 → 2026-03-02 · Updated 2026-03-03 · v2