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 <<>> 21.15.138.104
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 40389
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;21.15.138.104.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2025022500 1800 900 604800 86400

;; Query time: 15 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Tue Feb 25 19:46:43 CST 2025
;; MSG SIZE  rcvd: 106
Host info
Host 104.138.15.21.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 104.138.15.21.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
77.247.110.63 attack
[Thu Nov 07 13:28:38.291449 2019] [:error] [pid 19117:tid 140464925619968] [client 77.247.110.63:50635] [client 77.247.110.63] ModSecurity: Access denied with code 403 (phase 1). Match of "within %{tx.allowed_http_versions}" against "REQUEST_PROTOCOL" required. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "972"] [id "920430"] [msg "HTTP protocol version is not allowed by policy"] [data "HTTP/1.0"] [severity "CRITICAL"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/POLICY/PROTOCOL_NOT_ALLOWED"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A6"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/robots.txt"] [unique_id "XcO5lgmF7nx8HNga2aYSrQAAAJQ"]
...
2019-11-07 16:11:29
219.137.230.81 attack
Fail2Ban - FTP Abuse Attempt
2019-11-07 16:20:41
112.186.77.126 attackspam
2019-11-07T07:15:16.140429abusebot-5.cloudsearch.cf sshd\[16867\]: Invalid user rakesh from 112.186.77.126 port 56862
2019-11-07 15:54:38
187.73.210.138 attack
Nov  7 02:28:05 plusreed sshd[1416]: Invalid user hunch from 187.73.210.138
...
2019-11-07 15:59:25
175.141.252.33 attackbots
FTP,SSH,tcp 8080
2019-11-07 16:02:09
46.166.151.47 attack
\[2019-11-07 03:07:02\] SECURITY\[2634\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-11-07T03:07:02.978-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="0046462607509",SessionID="0x7fdf2cd1cd48",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/46.166.151.47/53553",ACLName="no_extension_match"
\[2019-11-07 03:10:07\] SECURITY\[2634\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-11-07T03:10:07.112-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="00046462607509",SessionID="0x7fdf2c003608",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/46.166.151.47/60784",ACLName="no_extension_match"
\[2019-11-07 03:16:36\] SECURITY\[2634\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-11-07T03:16:36.781-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="90046462607509",SessionID="0x7fdf2cd1cd48",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/46.166.151.47/59006",ACLName="no_extensi
2019-11-07 16:17:24
198.251.89.64 attack
Scanning (more than 2 packets) random ports - tries to find possible vulnerable services
2019-11-07 15:52:45
180.76.246.38 attackspambots
Nov  2 09:08:59 vtv3 sshd\[13730\]: Invalid user qweasdzxc from 180.76.246.38 port 39260
Nov  2 09:08:59 vtv3 sshd\[13730\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.246.38
Nov  2 09:09:01 vtv3 sshd\[13730\]: Failed password for invalid user qweasdzxc from 180.76.246.38 port 39260 ssh2
Nov  2 09:14:19 vtv3 sshd\[16267\]: Invalid user monitor from 180.76.246.38 port 48368
Nov  2 09:14:19 vtv3 sshd\[16267\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.246.38
Nov  2 09:36:13 vtv3 sshd\[27155\]: Invalid user test5 from 180.76.246.38 port 56694
Nov  2 09:36:13 vtv3 sshd\[27155\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.246.38
Nov  2 09:36:14 vtv3 sshd\[27155\]: Failed password for invalid user test5 from 180.76.246.38 port 56694 ssh2
Nov  2 09:41:42 vtv3 sshd\[29814\]: Invalid user jira from 180.76.246.38 port 37654
Nov  2 09:41:42 vtv3 sshd\[29814
2019-11-07 15:59:45
132.232.59.247 attackspam
Automatic report - Banned IP Access
2019-11-07 15:58:33
91.121.155.226 attackspambots
$f2bV_matches
2019-11-07 16:28:02
202.39.64.155 attack
2019-11-07T07:33:17.630785hub.schaetter.us sshd\[18284\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=202-39-64-155.hinet-ip.hinet.net  user=root
2019-11-07T07:33:19.537099hub.schaetter.us sshd\[18284\]: Failed password for root from 202.39.64.155 port 55568 ssh2
2019-11-07T07:41:27.000209hub.schaetter.us sshd\[18349\]: Invalid user lina from 202.39.64.155 port 38250
2019-11-07T07:41:27.008816hub.schaetter.us sshd\[18349\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=202-39-64-155.hinet-ip.hinet.net
2019-11-07T07:41:29.902211hub.schaetter.us sshd\[18349\]: Failed password for invalid user lina from 202.39.64.155 port 38250 ssh2
...
2019-11-07 16:00:01
68.183.72.72 attack
Unauthorized access to SSH at 7/Nov/2019:08:10:01 +0000.
Received:  (SSH-2.0-libssh2_1.7.0)
2019-11-07 16:14:16
212.91.190.81 attackbots
Nov  7 08:29:13 legacy sshd[31748]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=212.91.190.81
Nov  7 08:29:15 legacy sshd[31748]: Failed password for invalid user james from 212.91.190.81 port 49031 ssh2
Nov  7 08:33:14 legacy sshd[31902]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=212.91.190.81
...
2019-11-07 15:53:14
180.168.76.222 attack
" "
2019-11-07 16:22:38
144.217.166.92 attackbots
Nov  7 09:04:53 SilenceServices sshd[26775]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=144.217.166.92
Nov  7 09:04:55 SilenceServices sshd[26775]: Failed password for invalid user onlycdn_onlyidc from 144.217.166.92 port 44268 ssh2
Nov  7 09:08:54 SilenceServices sshd[27901]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=144.217.166.92
2019-11-07 16:14:40

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