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: Brazil

Internet Service Provider: J da L Moraes Telecom ME

Hostname: unknown

Organization: unknown

Usage Type: Commercial

Comments:
Type Details Datetime
attackspambots
(smtpauth) Failed SMTP AUTH login from 138.0.209.21 (BR/Brazil/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-07-04 16:37:41 plain authenticator failed for ([138.0.209.21]) [138.0.209.21]: 535 Incorrect authentication data (set_id=ardestani)
2020-07-05 03:19:24
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 138.0.209.21
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 35636
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;138.0.209.21.			IN	A

;; AUTHORITY SECTION:
.			505	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2020070401 1800 900 604800 86400

;; Query time: 61 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Sun Jul 05 03:19:21 CST 2020
;; MSG SIZE  rcvd: 116
Host info
Host 21.209.0.138.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 21.209.0.138.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
59.41.164.223 attackbots
Unauthorized connection attempt from IP address 59.41.164.223 on Port 445(SMB)
2019-09-09 19:02:03
133.130.119.178 attackspam
2019-09-09T09:49:00.878196abusebot-7.cloudsearch.cf sshd\[32313\]: Invalid user password123 from 133.130.119.178 port 15920
2019-09-09 17:55:49
51.75.205.122 attack
no
2019-09-09 19:27:37
222.212.26.104 attackbots
Unauthorized connection attempt from IP address 222.212.26.104 on Port 445(SMB)
2019-09-09 19:32:36
125.161.139.58 attackspam
Unauthorized connection attempt from IP address 125.161.139.58 on Port 445(SMB)
2019-09-09 18:57:15
5.1.88.50 attack
Sep  9 01:06:07 auw2 sshd\[22671\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.1.88.50  user=root
Sep  9 01:06:09 auw2 sshd\[22671\]: Failed password for root from 5.1.88.50 port 55452 ssh2
Sep  9 01:14:08 auw2 sshd\[23537\]: Invalid user ts3server from 5.1.88.50
Sep  9 01:14:08 auw2 sshd\[23537\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.1.88.50
Sep  9 01:14:10 auw2 sshd\[23537\]: Failed password for invalid user ts3server from 5.1.88.50 port 57652 ssh2
2019-09-09 19:26:29
37.14.204.204 attackspam
Sep  9 07:41:51 vps01 sshd[23603]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.14.204.204
Sep  9 07:41:53 vps01 sshd[23603]: Failed password for invalid user zabbix from 37.14.204.204 port 34076 ssh2
2019-09-09 18:10:29
83.43.117.102 attackspam
2019-09-09T10:12:17.320943abusebot-3.cloudsearch.cf sshd\[11282\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=102.red-83-43-117.dynamicip.rima-tde.net  user=root
2019-09-09 19:04:39
104.196.50.15 attack
Fail2Ban Ban Triggered
2019-09-09 18:06:47
41.68.13.190 attack
Unauthorized connection attempt from IP address 41.68.13.190 on Port 445(SMB)
2019-09-09 19:05:03
31.220.59.173 attack
Sep  8 21:58:23 hiderm sshd\[9781\]: Invalid user 123 from 31.220.59.173
Sep  8 21:58:23 hiderm sshd\[9781\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=31.220.59.173
Sep  8 21:58:25 hiderm sshd\[9781\]: Failed password for invalid user 123 from 31.220.59.173 port 54536 ssh2
Sep  8 22:04:52 hiderm sshd\[10432\]: Invalid user tempuser from 31.220.59.173
Sep  8 22:04:52 hiderm sshd\[10432\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=31.220.59.173
2019-09-09 19:28:44
51.15.112.152 attack
$f2bV_matches
2019-09-09 19:36:02
193.70.2.117 attackspam
2019-09-09T05:39:38.494107abusebot-5.cloudsearch.cf sshd\[20266\]: Invalid user 123qwe from 193.70.2.117 port 53410
2019-09-09 18:22:54
68.183.50.149 attack
2019-09-09T05:08:12.442796mizuno.rwx.ovh sshd[12095]: Connection from 68.183.50.149 port 44324 on 78.46.61.178 port 22
2019-09-09T05:08:13.029815mizuno.rwx.ovh sshd[12095]: Invalid user suporte from 68.183.50.149 port 44324
2019-09-09T05:08:13.037870mizuno.rwx.ovh sshd[12095]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=68.183.50.149
2019-09-09T05:08:12.442796mizuno.rwx.ovh sshd[12095]: Connection from 68.183.50.149 port 44324 on 78.46.61.178 port 22
2019-09-09T05:08:13.029815mizuno.rwx.ovh sshd[12095]: Invalid user suporte from 68.183.50.149 port 44324
2019-09-09T05:08:14.899615mizuno.rwx.ovh sshd[12095]: Failed password for invalid user suporte from 68.183.50.149 port 44324 ssh2
...
2019-09-09 17:56:46
182.76.214.118 attackspambots
Sep  9 01:22:28 hpm sshd\[29211\]: Invalid user jenkins from 182.76.214.118
Sep  9 01:22:28 hpm sshd\[29211\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.76.214.118
Sep  9 01:22:29 hpm sshd\[29211\]: Failed password for invalid user jenkins from 182.76.214.118 port 10039 ssh2
Sep  9 01:29:00 hpm sshd\[29956\]: Invalid user test1 from 182.76.214.118
Sep  9 01:29:00 hpm sshd\[29956\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.76.214.118
2019-09-09 19:37:10

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