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

Internet Service Provider: DigitalOcean LLC

Hostname: unknown

Organization: unknown

Usage Type: Data Center/Web Hosting/Transit

Comments:
Type Details Datetime
attack
2020-07-22T05:33:13.995016shield sshd\[13425\]: Invalid user malvina from 138.197.98.251 port 59622
2020-07-22T05:33:14.005035shield sshd\[13425\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
2020-07-22T05:33:16.160024shield sshd\[13425\]: Failed password for invalid user malvina from 138.197.98.251 port 59622 ssh2
2020-07-22T05:38:07.837080shield sshd\[14584\]: Invalid user bart from 138.197.98.251 port 44888
2020-07-22T05:38:07.847376shield sshd\[14584\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
2020-07-22 13:44:02
attackspambots
2020-07-21T07:23:23.203368vps773228.ovh.net sshd[13031]: Invalid user sales from 138.197.98.251 port 56924
2020-07-21T07:23:23.214946vps773228.ovh.net sshd[13031]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
2020-07-21T07:23:23.203368vps773228.ovh.net sshd[13031]: Invalid user sales from 138.197.98.251 port 56924
2020-07-21T07:23:25.023565vps773228.ovh.net sshd[13031]: Failed password for invalid user sales from 138.197.98.251 port 56924 ssh2
2020-07-21T07:28:01.340057vps773228.ovh.net sshd[13053]: Invalid user alex from 138.197.98.251 port 44724
...
2020-07-21 16:05:27
attackbots
Jul 19 18:00:23 rocket sshd[19168]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
Jul 19 18:00:25 rocket sshd[19168]: Failed password for invalid user markus from 138.197.98.251 port 42836 ssh2
Jul 19 18:05:08 rocket sshd[20016]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
...
2020-07-20 01:10:12
attackspam
Jul 16 15:35:13 plex-server sshd[2098162]: Invalid user orange from 138.197.98.251 port 58452
Jul 16 15:35:13 plex-server sshd[2098162]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251 
Jul 16 15:35:13 plex-server sshd[2098162]: Invalid user orange from 138.197.98.251 port 58452
Jul 16 15:35:15 plex-server sshd[2098162]: Failed password for invalid user orange from 138.197.98.251 port 58452 ssh2
Jul 16 15:40:04 plex-server sshd[2099759]: Invalid user ja from 138.197.98.251 port 47076
...
2020-07-16 23:40:11
attack
2020-07-12T15:03:06.802443linuxbox-skyline sshd[908965]: Invalid user redis from 138.197.98.251 port 55080
...
2020-07-13 05:43:03
attackspambots
Jul  3 21:21:53 gestao sshd[9625]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251 
Jul  3 21:21:56 gestao sshd[9625]: Failed password for invalid user server1 from 138.197.98.251 port 40994 ssh2
Jul  3 21:25:48 gestao sshd[9751]: Failed password for root from 138.197.98.251 port 38838 ssh2
...
2020-07-04 04:37:29
attack
Jun 28 10:20:09 dhoomketu sshd[1093720]: Invalid user ubuntu from 138.197.98.251 port 51942
Jun 28 10:20:09 dhoomketu sshd[1093720]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251 
Jun 28 10:20:09 dhoomketu sshd[1093720]: Invalid user ubuntu from 138.197.98.251 port 51942
Jun 28 10:20:11 dhoomketu sshd[1093720]: Failed password for invalid user ubuntu from 138.197.98.251 port 51942 ssh2
Jun 28 10:24:00 dhoomketu sshd[1093800]: Invalid user daniel from 138.197.98.251 port 51018
...
2020-06-28 13:14:43
attackspam
Fail2Ban
2020-06-24 20:27:24
attackspam
20 attempts against mh-ssh on cloud
2020-05-11 17:00:27
attackspambots
sshd jail - ssh hack attempt
2020-05-09 05:33:50
attackbots
$f2bV_matches
2020-05-04 23:51:36
attackspam
Invalid user publico from 138.197.98.251 port 39106
2020-05-01 14:14:05
attack
Apr 27 14:27:20 srv206 sshd[16157]: Invalid user shoutcast from 138.197.98.251
Apr 27 14:27:20 srv206 sshd[16157]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
Apr 27 14:27:20 srv206 sshd[16157]: Invalid user shoutcast from 138.197.98.251
Apr 27 14:27:22 srv206 sshd[16157]: Failed password for invalid user shoutcast from 138.197.98.251 port 50790 ssh2
...
2020-04-27 20:49:49
attack
$f2bV_matches
2020-04-26 16:11:52
attackbotsspam
Apr 20 01:54:46 dns1 sshd[7961]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251 
Apr 20 01:54:48 dns1 sshd[7961]: Failed password for invalid user testsftp from 138.197.98.251 port 59140 ssh2
Apr 20 02:00:12 dns1 sshd[8450]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
2020-04-20 16:52:14
attackspam
Bruteforce detected by fail2ban
2020-04-18 00:33:19
attackbots
Mar 23 04:58:12 sso sshd[19073]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
Mar 23 04:58:14 sso sshd[19073]: Failed password for invalid user grandma from 138.197.98.251 port 45436 ssh2
...
2020-03-23 13:00:49
attackbotsspam
Mar 19 18:45:04 icinga sshd[4009]: Failed password for root from 138.197.98.251 port 55682 ssh2
Mar 19 18:55:43 icinga sshd[22087]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251 
Mar 19 18:55:45 icinga sshd[22087]: Failed password for invalid user yang from 138.197.98.251 port 34994 ssh2
...
2020-03-20 03:25:19
attackbotsspam
Mar 14 04:43:42 h2646465 sshd[10263]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251  user=root
Mar 14 04:43:45 h2646465 sshd[10263]: Failed password for root from 138.197.98.251 port 40592 ssh2
Mar 14 04:50:32 h2646465 sshd[12743]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251  user=root
Mar 14 04:50:35 h2646465 sshd[12743]: Failed password for root from 138.197.98.251 port 55456 ssh2
Mar 14 04:53:40 h2646465 sshd[13471]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251  user=root
Mar 14 04:53:42 h2646465 sshd[13471]: Failed password for root from 138.197.98.251 port 43444 ssh2
Mar 14 04:57:38 h2646465 sshd[14843]: Invalid user omega from 138.197.98.251
Mar 14 04:57:38 h2646465 sshd[14843]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
Mar 14 04:57:38 h2646465 sshd[14843]: Invalid user om
2020-03-14 12:11:47
attackbotsspam
Invalid user 12 from 138.197.98.251 port 53156
2020-03-11 17:42:35
attackbotsspam
Mar  9 00:38:36 vpn01 sshd[24126]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
Mar  9 00:38:37 vpn01 sshd[24126]: Failed password for invalid user 1QAZ!QAZ from 138.197.98.251 port 50326 ssh2
...
2020-03-09 07:38:45
attackspam
Mar  3 06:06:26 vps46666688 sshd[679]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
Mar  3 06:06:29 vps46666688 sshd[679]: Failed password for invalid user wp-admin from 138.197.98.251 port 58710 ssh2
...
2020-03-03 17:51:47
attackspambots
Feb 21 18:59:18 vps58358 sshd\[23253\]: Invalid user bot from 138.197.98.251Feb 21 18:59:21 vps58358 sshd\[23253\]: Failed password for invalid user bot from 138.197.98.251 port 47176 ssh2Feb 21 19:00:49 vps58358 sshd\[23272\]: Invalid user robi from 138.197.98.251Feb 21 19:00:51 vps58358 sshd\[23272\]: Failed password for invalid user robi from 138.197.98.251 port 60522 ssh2Feb 21 19:02:16 vps58358 sshd\[23287\]: Invalid user common from 138.197.98.251Feb 21 19:02:19 vps58358 sshd\[23287\]: Failed password for invalid user common from 138.197.98.251 port 45630 ssh2
...
2020-02-22 02:42:52
attackbotsspam
Feb 11 23:40:05 server sshd\[8034\]: Invalid user transition from 138.197.98.251
Feb 11 23:40:05 server sshd\[8034\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251 
Feb 11 23:40:07 server sshd\[8034\]: Failed password for invalid user transition from 138.197.98.251 port 43530 ssh2
Feb 12 21:27:38 server sshd\[6469\]: Invalid user robers from 138.197.98.251
Feb 12 21:27:38 server sshd\[6469\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251 
...
2020-02-13 04:05:14
attackbotsspam
Feb 12 11:22:21 lnxmysql61 sshd[21189]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
2020-02-12 20:02:34
attackbots
Jan 26 16:07:55 sd-53420 sshd\[1606\]: User root from 138.197.98.251 not allowed because none of user's groups are listed in AllowGroups
Jan 26 16:07:55 sd-53420 sshd\[1606\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251  user=root
Jan 26 16:07:58 sd-53420 sshd\[1606\]: Failed password for invalid user root from 138.197.98.251 port 60320 ssh2
Jan 26 16:10:53 sd-53420 sshd\[2145\]: Invalid user stephen from 138.197.98.251
Jan 26 16:10:53 sd-53420 sshd\[2145\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
...
2020-01-26 23:38:17
attack
$f2bV_matches
2020-01-12 00:38:32
attack
Jan  7 20:43:09 MK-Soft-VM5 sshd[11850]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251 
Jan  7 20:43:11 MK-Soft-VM5 sshd[11850]: Failed password for invalid user das from 138.197.98.251 port 45530 ssh2
...
2020-01-08 03:56:11
attack
Dec 29 18:11:13 mout sshd[28658]: Invalid user admin from 138.197.98.251 port 39454
2019-12-30 01:24:48
attackbotsspam
Dec 28 07:01:20 game-panel sshd[27548]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.98.251
Dec 28 07:01:23 game-panel sshd[27548]: Failed password for invalid user shahbuddin from 138.197.98.251 port 46086 ssh2
Dec 28 07:04:36 game-panel sshd[27646]: Failed password for dovecot from 138.197.98.251 port 50292 ssh2
2019-12-28 15:17:31
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:

; <<>> DiG 9.10.3-P4-Ubuntu <<>> 138.197.98.251
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 9483
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			3600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019050400 1800 900 604800 86400

;; Query time: 2 msec
;; SERVER: 67.207.67.3#53(67.207.67.3)
;; WHEN: Sat May 04 15:06:53 +08 2019
;; MSG SIZE  rcvd: 118

Host info
Host 251.98.197.138.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		67.207.67.3
Address:	67.207.67.3#53

** server can't find 251.98.197.138.in-addr.arpa: NXDOMAIN

Related IP info:
Related comments:
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200.100.126.95 attackbots
Unauthorized connection attempt from IP address 200.100.126.95 on Port 445(SMB)
2020-06-21 01:42:55
157.48.53.101 attackspambots
Unauthorized connection attempt from IP address 157.48.53.101 on Port 445(SMB)
2020-06-21 01:34:25
60.12.221.84 attackbotsspam
$f2bV_matches
2020-06-21 01:27:16
82.80.41.234 attack
Unauthorized connection attempt from IP address 82.80.41.234 on Port 445(SMB)
2020-06-21 01:19:37
139.162.120.98 attackspambots
Port scan denied
2020-06-21 01:23:08
46.4.60.249 attackbotsspam
20 attempts against mh-misbehave-ban on twig
2020-06-21 01:26:03
129.204.45.88 attack
Jun 20 17:10:35 onepixel sshd[3625773]: Invalid user shield from 129.204.45.88 port 38414
Jun 20 17:10:35 onepixel sshd[3625773]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.204.45.88 
Jun 20 17:10:35 onepixel sshd[3625773]: Invalid user shield from 129.204.45.88 port 38414
Jun 20 17:10:37 onepixel sshd[3625773]: Failed password for invalid user shield from 129.204.45.88 port 38414 ssh2
Jun 20 17:14:15 onepixel sshd[3627520]: Invalid user admin from 129.204.45.88 port 54258
2020-06-21 01:20:16
180.248.108.243 attackspam
Unauthorized connection attempt from IP address 180.248.108.243 on Port 445(SMB)
2020-06-21 01:33:04
66.161.137.115 attackspam
Unauthorized connection attempt from IP address 66.161.137.115 on Port 445(SMB)
2020-06-21 01:41:29
84.21.188.124 attack
Registration form abuse
2020-06-21 01:43:11
213.6.65.130 attack
Unauthorized connection attempt from IP address 213.6.65.130 on Port 445(SMB)
2020-06-21 01:06:49
165.225.106.51 attack
Unauthorized connection attempt from IP address 165.225.106.51 on Port 445(SMB)
2020-06-21 01:30:56
167.99.10.162 attack
US - - [20/Jun/2020:04:50:55 +0300] POST /wordpress/xmlrpc.php HTTP/1.1 200 269 - Mozilla/5.0 X11; Ubuntu; Linux x86_64; rv:62.0 Gecko/20100101 Firefox/62.0
2020-06-21 01:47:07
222.186.175.216 attackbots
$f2bV_matches
2020-06-21 01:23:44
115.79.138.163 attackbotsspam
Jun 20 14:29:19 gestao sshd[27767]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.79.138.163 
Jun 20 14:29:21 gestao sshd[27767]: Failed password for invalid user isaac from 115.79.138.163 port 57183 ssh2
Jun 20 14:31:58 gestao sshd[27812]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.79.138.163 
...
2020-06-21 01:24:34

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