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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.

59.23.34.0/24

Risk Max 27 LOW Footprint 0.391% Hits 12
Prefix / IP version
/24 · IPv4
Network
59.23.34.0
Broadcast
59.23.34.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.8908 , 128.6377
Hits / Errors
12 hits · 0 errors
First / Last seen
2024-05-26 11:25 · 2024-05-26 19:44
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2024-05-20 → 2024-05-27 · Updated 2026-01-14 · v2

121.141.64.0/24

Risk Max 14 LOW Footprint 0.391% Hits 96
Prefix / IP version
/24 · IPv4
Network
121.141.64.0
Broadcast
121.141.64.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.504 , 126.87169999999999
Hits / Errors
96 hits · 88 errors
First / Last seen
2025-03-21 02:07 · 2025-03-21 02:08
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2025-03-17 → 2025-03-24 · Updated 2026-01-14 · v2

211.105.223.0/24

Risk Max 13 LOW Footprint 0.391% Hits 84
Prefix / IP version
/24 · IPv4
Network
211.105.223.0
Broadcast
211.105.223.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.5003 , 126.95650000000002
Hits / Errors
84 hits · 82 errors
First / Last seen
2025-05-13 10:24 · 2025-05-13 10:32
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2025-05-12 → 2025-05-19 · Updated 2026-01-14 · v2

211.221.237.0/24

Risk Max 12 LOW Footprint 0.391% Hits 256
Prefix / IP version
/24 · IPv4
Network
211.221.237.0
Broadcast
211.221.237.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.2072 , 126.8168
Hits / Errors
256 hits · 0 errors
First / Last seen
2024-01-19 21:42 · 2024-01-19 21:43
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2024-01-15 → 2024-01-22 · Updated 2026-01-14 · v2

121.186.31.0/24

Risk Max 5 LOW Footprint 0.391% Hits 182
Prefix / IP version
/24 · IPv4
Network
121.186.31.0
Broadcast
121.186.31.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.8345 , 127.1057
Hits / Errors
182 hits · 0 errors
First / Last seen
2025-07-14 07:40 · 2025-07-15 21:51
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2025-07-14 → 2025-07-21 · Updated 2026-01-14 · v2

59.11.214.0/24

Risk Max 5 LOW Footprint 0.391% Hits 10
Prefix / IP version
/24 · IPv4
Network
59.11.214.0
Broadcast
59.11.214.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.2506 , 127.06680000000001
Hits / Errors
10 hits · 4 errors
First / Last seen
2023-08-16 22:24 · 2023-08-16 22:24
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2023-08-14 → 2023-08-21 · Updated 2026-01-14 · v2

220.84.21.0/24

Risk Max 5 LOW Footprint 0.391% Hits 8
Prefix / IP version
/24 · IPv4
Network
220.84.21.0
Broadcast
220.84.21.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.2619 , 128.867
Hits / Errors
8 hits · 4 errors
First / Last seen
2025-08-26 22:03 · 2025-08-26 22:05
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2025-08-25 → 2025-09-01 · Updated 2026-01-14 · v2

221.159.21.0/24

Risk Max 3 LOW Footprint 0.391% Hits 90
Prefix / IP version
/24 · IPv4
Network
221.159.21.0
Broadcast
221.159.21.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.8396 , 127.06709999999998
Hits / Errors
90 hits · 0 errors
First / Last seen
2025-03-04 08:54 · 2025-03-06 20:22
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2025-03-03 → 2025-03-10 · Updated 2026-01-14 · v2

220.93.167.0/24

Risk Max 3 LOW Footprint 0.391% Hits 45
Prefix / IP version
/24 · IPv4
Network
220.93.167.0
Broadcast
220.93.167.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.1366 , 126.8656
Hits / Errors
45 hits · 0 errors
First / Last seen
2025-03-03 07:49 · 2025-03-03 07:50
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2025-03-03 → 2025-03-10 · Updated 2026-01-14 · v2

210.113.70.0/24

Risk Max 3 LOW Footprint 0.391% Hits 20
Prefix / IP version
/24 · IPv4
Network
210.113.70.0
Broadcast
210.113.70.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.4062 , 127.1077
Hits / Errors
20 hits · 19 errors
First / Last seen
2025-05-11 19:19 · 2025-05-11 19:21
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
— · Korea Telecom
Window / Updated
2025-05-05 → 2025-05-12 · Updated 2026-01-14 · v2

218.145.61.0/24

Risk Max 3 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
218.145.61.0
Broadcast
218.145.61.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.4909 , 127.0452
Hits / Errors
2 hits · 1 errors
First / Last seen
2024-04-18 07:41 · 2024-04-18 07:41
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2024-04-15 → 2024-04-22 · Updated 2026-01-14 · v2

183.108.86.0/24

Risk Max 2 LOW Footprint 0.391% Hits 26
Prefix / IP version
/24 · IPv4
Network
183.108.86.0
Broadcast
183.108.86.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.6874 , 127.8782
Hits / Errors
26 hits · 0 errors
First / Last seen
2025-07-10 02:44 · 2025-07-10 02:44
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2025-07-07 → 2025-07-14 · Updated 2026-01-14 · v2

61.75.60.0/24

Risk Max 2 LOW Footprint 0.391% Hits 6
Prefix / IP version
/24 · IPv4
Network
61.75.60.0
Broadcast
61.75.60.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.4873 , 126.9227
Hits / Errors
6 hits · 4 errors
First / Last seen
2025-01-11 21:57 · 2025-01-11 21:57
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2025-01-06 → 2025-01-13 · Updated 2026-01-14 · v2

221.156.244.0/24

Risk Max 2 LOW Footprint 0.391% Hits 3
Prefix / IP version
/24 · IPv4
Network
221.156.244.0
Broadcast
221.156.244.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.2119 , 126.85449999999999
Hits / Errors
3 hits · 0 errors
First / Last seen
2023-12-12 20:12 · 2023-12-15 08:18
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2023-12-11 → 2023-12-18 · Updated 2026-01-14 · v2

59.12.57.0/24

Risk Max 2 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
59.12.57.0
Broadcast
59.12.57.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.2872 , 127.0116
Hits / Errors
2 hits · 0 errors
First / Last seen
2023-07-17 18:04 · 2023-07-17 20:18
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
— · Korea Telecom
Top geo
Window / Updated
2023-07-17 → 2023-07-24 · Updated 2026-01-14 · v2

27.255.64.0/24

Risk Max 1 LOW Footprint 0.391% Hits 32
Prefix / IP version
/24 · IPv4
Network
27.255.64.0
Broadcast
27.255.64.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.4759 , 126.884
Hits / Errors
32 hits · 28 errors
First / Last seen
2024-12-08 22:59 · 2024-12-08 23:00
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2024-12-02 → 2024-12-09 · Updated 2026-01-14 · v2

121.149.208.0/24

Risk Max 1 LOW Footprint 0.391% Hits 23
Prefix / IP version
/24 · IPv4
Network
121.149.208.0
Broadcast
121.149.208.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
34.7566 , 127.6626
Hits / Errors
23 hits · 0 errors
First / Last seen
2024-02-06 23:52 · 2024-02-06 23:52
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2024-02-05 → 2024-02-12 · Updated 2026-01-14 · v2

222.96.14.0/24

Risk Max 1 LOW Footprint 0.391% Hits 19
Prefix / IP version
/24 · IPv4
Network
222.96.14.0
Broadcast
222.96.14.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.2342 , 128.8777
Hits / Errors
19 hits · 0 errors
First / Last seen
2024-02-06 07:29 · 2024-02-06 07:29
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2024-02-05 → 2024-02-12 · Updated 2026-01-14 · v2

59.2.23.0/24

Risk Max 1 LOW Footprint 0.391% Hits 8
Prefix / IP version
/24 · IPv4
Network
59.2.23.0
Broadcast
59.2.23.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.8345 , 127.1057
Hits / Errors
8 hits · 0 errors
First / Last seen
2023-11-17 01:28 · 2023-11-17 01:28
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2023-11-13 → 2023-11-20 · Updated 2026-01-14 · v2

119.200.13.0/24

Risk Max 1 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
119.200.13.0
Broadcast
119.200.13.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.2118 , 126.8876
Hits / Errors
2 hits · 0 errors
First / Last seen
2024-06-13 13:49 · 2024-06-13 13:49
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2024-06-10 → 2024-06-17 · Updated 2026-01-14 · v2

211.225.81.0/24

Risk Max 1 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
211.225.81.0
Broadcast
211.225.81.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.9606 , 126.983
Hits / Errors
2 hits · 0 errors
First / Last seen
2024-02-07 17:32 · 2024-02-11 16:03
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2024-02-05 → 2024-02-12 · Updated 2026-01-14 · v2

211.226.150.0/24

Risk Max 1 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
211.226.150.0
Broadcast
211.226.150.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.4988 , 126.7824
Hits / Errors
2 hits · 1 errors
First / Last seen
2023-10-20 05:08 · 2023-10-20 05:08
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2023-10-16 → 2023-10-23 · Updated 2026-01-14 · v2

121.168.136.0/24

Risk Max 1 LOW Footprint 0.391% Hits 2
Prefix / IP version
/24 · IPv4
Network
121.168.136.0
Broadcast
121.168.136.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.1522 , 127.1752
Hits / Errors
2 hits · 0 errors
First / Last seen
2023-07-24 18:04 · 2023-07-25 14:22
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2023-07-24 → 2023-07-31 · Updated 2026-01-14 · v2

115.23.81.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
115.23.81.0
Broadcast
115.23.81.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.1566 , 126.8036
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-09-23 09:48 · 2024-09-23 09:48
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2024-09-23 → 2024-09-30 · Updated 2026-01-14 · v2

59.10.46.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
59.10.46.0
Broadcast
59.10.46.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.5658 , 126.978
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-05-29 14:44 · 2024-05-29 14:44
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2024-05-27 → 2024-06-03 · Updated 2026-01-14 · v2

222.99.65.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
222.99.65.0
Broadcast
222.99.65.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.4331 , 127.1377
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-02-24 21:20 · 2024-02-24 21:20
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
— · Korea Telecom
Window / Updated
2024-02-19 → 2024-02-26 · Updated 2026-01-14 · v2

121.164.82.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
121.164.82.0
Broadcast
121.164.82.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.8119 , 127.08
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-02-22 19:18 · 2024-02-22 19:18
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2024-02-19 → 2024-02-26 · Updated 2026-01-14 · v2

59.9.85.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
59.9.85.0
Broadcast
59.9.85.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.6675 , 127.2383
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-02-14 04:19 · 2024-02-14 04:19
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2024-02-12 → 2024-02-19 · Updated 2026-01-14 · v2

112.168.33.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
112.168.33.0
Broadcast
112.168.33.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.2677 , 127.0457
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-02-09 10:11 · 2024-02-09 10:11
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
— · Korea Telecom
Top geo
Window / Updated
2024-02-05 → 2024-02-12 · Updated 2026-01-14 · v2

118.45.105.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
118.45.105.0
Broadcast
118.45.105.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.8908 , 128.6377
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-02-06 23:34 · 2024-02-06 23:34
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2024-02-05 → 2024-02-12 · Updated 2026-01-14 · v2

112.161.134.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
112.161.134.0
Broadcast
112.161.134.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.6224 , 127.1502
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-02-04 08:48 · 2024-02-04 08:48
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2024-01-29 → 2024-02-05 · Updated 2026-01-14 · v2

222.100.194.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
222.100.194.0
Broadcast
222.100.194.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.4873 , 126.9227
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-01-29 21:39 · 2024-01-29 21:39
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2024-01-29 → 2024-02-05 · Updated 2026-01-14 · v2

211.46.221.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
211.46.221.0
Broadcast
211.46.221.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.3419 , 127.3886
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-01-26 15:20 · 2024-01-26 15:20
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2024-01-22 → 2024-01-29 · Updated 2026-01-14 · v2

121.151.243.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
121.151.243.0
Broadcast
121.151.243.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.1135 , 128.343
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-01-24 21:41 · 2024-01-24 21:41
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2024-01-22 → 2024-01-29 · Updated 2026-01-14 · v2

125.135.8.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
125.135.8.0
Broadcast
125.135.8.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.2342 , 128.8777
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-01-22 00:11 · 2024-01-22 00:11
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2024-01-22 → 2024-01-29 · Updated 2026-01-14 · v2

59.22.208.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
59.22.208.0
Broadcast
59.22.208.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.2103 , 128.6712
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-01-21 23:27 · 2024-01-21 23:27
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
— · Korea Telecom
Window / Updated
2024-01-15 → 2024-01-22 · Updated 2026-01-14 · v2

59.26.123.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
59.26.123.0
Broadcast
59.26.123.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.3566 , 127.3849
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-01-21 10:21 · 2024-01-21 10:21
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
— · Korea Telecom
Top geo
Window / Updated
2024-01-15 → 2024-01-22 · Updated 2026-01-14 · v2

121.152.220.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
121.152.220.0
Broadcast
121.152.220.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
36.4509 , 127.4172
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-01-15 07:21 · 2024-01-15 07:21
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2024-01-15 → 2024-01-22 · Updated 2026-01-14 · v2

121.169.184.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
121.169.184.0
Broadcast
121.169.184.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
37.4062 , 127.1077
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-01-15 06:58 · 2024-01-15 06:58
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Window / Updated
2024-01-15 → 2024-01-22 · Updated 2026-01-14 · v2

210.123.132.0/24

Risk Max 1 LOW Footprint 0.391% Hits 1
Prefix / IP version
/24 · IPv4
Network
210.123.132.0
Broadcast
210.123.132.255
Observed IPs / Subnet size
1 observed · 256 total
Centroid
35.8723 , 128.5924
Hits / Errors
1 hits · 0 errors
First / Last seen
2024-01-15 03:43 · 2024-01-15 03:43
Top ASN
AS4766 · Korea Telecom
Top organization / ISP
Top geo
Window / Updated
2024-01-15 → 2024-01-22 · Updated 2026-01-14 · v2
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