Must be a valid IPv4 or IPv6 ip address, e.g. 127.0.0.1 or 2001:DB8:0:0:8:800:200C:417A
Basic Info

City: unknown

Region: unknown

Country: United States of America (the)

Internet Service Provider: unknown

Hostname: unknown

Organization: unknown

Usage Type: unknown

Comments:
No discussion about this IP yet. Click above link to make one.
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 138.72.21.55
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 39370
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;138.72.21.55.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2025021700 1800 900 604800 86400

;; Query time: 121 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Mon Feb 17 19:28:58 CST 2025
;; MSG SIZE  rcvd: 105
Host info
Host 55.21.72.138.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 55.21.72.138.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
176.109.0.30 attackspam
$f2bV_matches
2020-10-07 23:43:09
49.88.112.67 attack
Oct  7 17:34:06 abendstille sshd\[11769\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.67  user=root
Oct  7 17:34:08 abendstille sshd\[11769\]: Failed password for root from 49.88.112.67 port 38945 ssh2
Oct  7 17:34:10 abendstille sshd\[11769\]: Failed password for root from 49.88.112.67 port 38945 ssh2
Oct  7 17:34:12 abendstille sshd\[11769\]: Failed password for root from 49.88.112.67 port 38945 ssh2
Oct  7 17:36:28 abendstille sshd\[14516\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.67  user=root
...
2020-10-07 23:47:01
222.174.213.180 attackbotsspam
$f2bV_matches
2020-10-07 23:24:02
197.54.246.103 attackspam
Port probing on unauthorized port 23
2020-10-07 23:32:11
183.164.244.240 attack
SSH/22 MH Probe, BF, Hack -
2020-10-07 23:27:13
134.209.246.210 attackbotsspam
Oct  7 17:38:23 rancher-0 sshd[522249]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.209.246.210  user=root
Oct  7 17:38:25 rancher-0 sshd[522249]: Failed password for root from 134.209.246.210 port 46086 ssh2
...
2020-10-07 23:57:26
182.151.37.230 attackbotsspam
Oct  7 17:21:57 h2829583 sshd[18441]: Failed password for root from 182.151.37.230 port 50062 ssh2
2020-10-07 23:30:32
210.211.96.181 attackbotsspam
SSH login attempts.
2020-10-08 00:06:40
193.56.28.170 attack
Port scan denied
2020-10-07 23:30:08
52.77.116.19 attackbotsspam
Oct  7 15:39:59 scw-gallant-ride sshd[21342]: Failed password for root from 52.77.116.19 port 36776 ssh2
2020-10-07 23:46:36
159.69.241.38 attack
SSH Bruteforce Attempt on Honeypot
2020-10-08 00:07:54
185.194.49.132 attackbotsspam
185.194.49.132 (ES/Spain/-), 6 distributed sshd attacks on account [root] in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_DISTATTACK; Logs: Oct  7 06:12:46 server2 sshd[31165]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=119.45.142.15  user=root
Oct  7 06:11:10 server2 sshd[30467]: Failed password for root from 148.72.65.173 port 51146 ssh2
Oct  7 06:12:28 server2 sshd[31135]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.194.49.132  user=root
Oct  7 06:11:53 server2 sshd[30677]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.242.34.166  user=root
Oct  7 06:11:55 server2 sshd[30677]: Failed password for root from 114.242.34.166 port 41728 ssh2
Oct  7 06:12:30 server2 sshd[31135]: Failed password for root from 185.194.49.132 port 56763 ssh2

IP Addresses Blocked:

119.45.142.15 (CN/China/-)
148.72.65.173 (US/United States/-)
2020-10-07 23:53:50
14.157.101.128 attackbots
MultiHost/MultiPort Probe, Scan, Hack -
2020-10-07 23:28:59
103.208.137.52 attackbots
SSH bruteforce
2020-10-07 23:53:04
222.186.42.137 attack
Oct  7 11:30:57 NPSTNNYC01T sshd[11582]: Failed password for root from 222.186.42.137 port 54585 ssh2
Oct  7 11:30:59 NPSTNNYC01T sshd[11582]: Failed password for root from 222.186.42.137 port 54585 ssh2
Oct  7 11:31:01 NPSTNNYC01T sshd[11582]: Failed password for root from 222.186.42.137 port 54585 ssh2
...
2020-10-07 23:31:38

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