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: None

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:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.21.147
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 48108
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.21.147.			IN	A

;; AUTHORITY SECTION:
.			595	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021702 1800 900 604800 86400

;; Query time: 70 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 08:33:00 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 147.21.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 147.21.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
217.112.128.138 attack
Postfix DNSBL listed. Trying to send SPAM.
2019-07-08 08:58:13
122.224.3.12 attackbotsspam
Attempts against Pop3/IMAP
2019-07-08 09:25:41
223.171.42.178 attackbots
Jul  8 01:24:58 work-partkepr sshd\[2072\]: Invalid user anonymous from 223.171.42.178 port 36096
Jul  8 01:24:58 work-partkepr sshd\[2072\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=223.171.42.178
...
2019-07-08 09:36:58
102.165.38.228 attackspam
\[2019-07-07 21:05:23\] SECURITY\[13451\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-07-07T21:05:23.241-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="599548814503006",SessionID="0x7f02f89969f8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/102.165.38.228/60976",ACLName="no_extension_match"
\[2019-07-07 21:05:43\] SECURITY\[13451\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-07-07T21:05:43.044-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="296048422069010",SessionID="0x7f02f85da9d8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/102.165.38.228/62199",ACLName="no_extension_match"
\[2019-07-07 21:07:05\] SECURITY\[13451\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-07-07T21:07:05.932-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="448148323235012",SessionID="0x7f02f88cef08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/102.165.38.228/50161",ACLName="
2019-07-08 09:18:03
180.54.207.38 attackbots
firewall-block, port(s): 23/tcp
2019-07-08 09:19:57
27.14.86.101 attack
SSHD brute force attack detected by fail2ban
2019-07-08 09:16:28
218.61.16.186 attackbotsspam
MultiHost/MultiPort Probe, Scan, Hack -
2019-07-08 09:11:37
183.131.82.99 attackbotsspam
Jul  8 02:03:51 debian sshd\[25106\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.131.82.99  user=root
Jul  8 02:03:53 debian sshd\[25106\]: Failed password for root from 183.131.82.99 port 54193 ssh2
...
2019-07-08 09:12:59
196.43.129.6 attack
2019-07-08T01:08:40.887261stark.klein-stark.info sshd\[24295\]: Invalid user wn from 196.43.129.6 port 34006
2019-07-08T01:08:40.893981stark.klein-stark.info sshd\[24295\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=196.43.129.6
2019-07-08T01:08:42.614368stark.klein-stark.info sshd\[24295\]: Failed password for invalid user wn from 196.43.129.6 port 34006 ssh2
...
2019-07-08 09:30:23
171.232.0.252 attackspambots
2019-07-04 17:15:42 H=([171.232.0.252]) [171.232.0.252]:56247 I=[10.100.18.25]:25 F=: Host/domain is listed in RBL cbl.abuseat.org (Blocked - see hxxp://www.abuseat.org/lookup.cgi?ip=171.232.0.252)
2019-07-04 17:15:42 unexpected disconnection while reading SMTP command from ([171.232.0.252]) [171.232.0.252]:56247 I=[10.100.18.25]:25 (error: Connection reset by peer)
2019-07-04 18:43:41 H=([171.232.0.252]) [171.232.0.252]:42299 I=[10.100.18.25]:25 F=: Host/domain is listed in RBL cbl.abuseat.org (Blocked - see hxxp://www.abuseat.org/lookup.cgi?ip=171.232.0.252)


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=171.232.0.252
2019-07-08 08:53:00
111.243.194.99 attackbotsspam
[portscan] Port scan
2019-07-08 09:32:45
1.30.28.195 attack
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x
2019-07-02 x@x

........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=1.30.28.195
2019-07-08 09:10:31
198.108.67.92 attack
Portscan or hack attempt detected by psad/fwsnort
2019-07-08 09:14:07
107.170.200.70 attack
58566/tcp 31274/tcp 4899/tcp...
[2019-05-09/07-07]63pkt,49pt.(tcp),4pt.(udp)
2019-07-08 09:13:36
59.180.230.148 attackbotsspam
Jul  1 04:27:02 new sshd[14462]: reveeclipse mapping checking getaddrinfo for triband-del-59.180.230.148.bol.net.in [59.180.230.148] failed - POSSIBLE BREAK-IN ATTEMPT!
Jul  1 04:27:04 new sshd[14462]: Failed password for invalid user anicet from 59.180.230.148 port 54632 ssh2
Jul  1 04:27:04 new sshd[14462]: Received disconnect from 59.180.230.148: 11: Bye Bye [preauth]
Jul  1 04:29:28 new sshd[14836]: reveeclipse mapping checking getaddrinfo for triband-del-59.180.230.148.bol.net.in [59.180.230.148] failed - POSSIBLE BREAK-IN ATTEMPT!
Jul  1 04:29:29 new sshd[14836]: Failed password for invalid user ang from 59.180.230.148 port 16460 ssh2
Jul  1 04:29:29 new sshd[14836]: Received disconnect from 59.180.230.148: 11: Bye Bye [preauth]
Jul  1 04:31:32 new sshd[15758]: reveeclipse mapping checking getaddrinfo for triband-del-59.180.230.148.bol.net.in [59.180.230.148] failed - POSSIBLE BREAK-IN ATTEMPT!
Jul  1 04:31:35 new sshd[15758]: Failed password for invalid user mash........
-------------------------------
2019-07-08 08:55:50

Recently Reported IPs

104.21.20.85 104.21.21.140 104.21.21.120 104.21.21.143
104.21.21.149 104.21.21.15 104.21.21.150 104.21.21.173
104.21.21.166 104.21.21.183 104.21.21.163 128.1.164.230
104.21.21.187 104.21.21.195 104.21.21.191 104.21.21.193
104.21.21.158 104.21.21.204 104.21.21.3 104.21.21.201