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: Korea (the Republic of)

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 <<>> 42.21.241.156
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 27458
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;42.21.241.156.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2025012201 1800 900 604800 86400

;; Query time: 12 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Jan 23 02:06:43 CST 2025
;; MSG SIZE  rcvd: 106
Host info
Host 156.241.21.42.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 156.241.21.42.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
61.15.84.172 attack
Honeypot attack, port: 5555, PTR: cm61-15-84-172.hkcable.com.hk.
2020-03-24 17:11:42
51.83.68.213 attackbots
Mar 24 09:18:06 ns381471 sshd[17804]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.83.68.213
Mar 24 09:18:08 ns381471 sshd[17804]: Failed password for invalid user shoshanna from 51.83.68.213 port 43526 ssh2
2020-03-24 16:26:27
5.238.92.210 attackbotsspam
Honeypot attack, port: 445, PTR: PTR record not found
2020-03-24 16:42:55
51.75.25.12 attackspam
Mar 24 13:07:21 areeb-Workstation sshd[28629]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.75.25.12 
Mar 24 13:07:23 areeb-Workstation sshd[28629]: Failed password for invalid user alpha from 51.75.25.12 port 34808 ssh2
...
2020-03-24 16:48:58
150.109.62.183 attackbotsspam
Mar 24 08:55:34 XXXXXX sshd[29853]: Invalid user oy from 150.109.62.183 port 36750
2020-03-24 17:08:36
140.143.128.66 attackspam
Mar 24 02:47:20 firewall sshd[14900]: Invalid user mn from 140.143.128.66
Mar 24 02:47:22 firewall sshd[14900]: Failed password for invalid user mn from 140.143.128.66 port 56016 ssh2
Mar 24 02:52:07 firewall sshd[15085]: Invalid user eve from 140.143.128.66
...
2020-03-24 17:03:26
173.249.57.253 attackbots
Mar 24 06:52:08 vpn01 sshd[21687]: Failed password for root from 173.249.57.253 port 37298 ssh2
Mar 24 06:52:20 vpn01 sshd[21687]: error: maximum authentication attempts exceeded for root from 173.249.57.253 port 37298 ssh2 [preauth]
...
2020-03-24 16:53:37
220.134.29.101 attackspam
Honeypot attack, port: 81, PTR: 220-134-29-101.HINET-IP.hinet.net.
2020-03-24 16:37:50
14.241.120.48 attack
Honeypot attack, port: 445, PTR: static.vnpt.vn.
2020-03-24 16:34:54
185.36.81.78 attackspam
Mar 24 09:32:54 srv01 postfix/smtpd\[27104\]: warning: unknown\[185.36.81.78\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Mar 24 09:38:04 srv01 postfix/smtpd\[27104\]: warning: unknown\[185.36.81.78\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Mar 24 09:39:35 srv01 postfix/smtpd\[27104\]: warning: unknown\[185.36.81.78\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Mar 24 09:40:09 srv01 postfix/smtpd\[27104\]: warning: unknown\[185.36.81.78\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Mar 24 09:44:13 srv01 postfix/smtpd\[1052\]: warning: unknown\[185.36.81.78\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2020-03-24 16:51:31
129.28.141.140 attackspam
10 attempts against mh-pma-try-ban on rose
2020-03-24 16:41:25
27.105.103.3 attackspam
Invalid user daniel from 27.105.103.3 port 34450
2020-03-24 16:36:17
51.91.127.201 attackbots
Mar 24 08:42:40 l03 sshd[21654]: Invalid user dongtingting from 51.91.127.201 port 46408
...
2020-03-24 16:55:52
116.196.70.88 attackspam
Mar 24 08:06:26 XXX sshd[44617]: Invalid user easy from 116.196.70.88 port 44546
2020-03-24 17:09:41
178.239.126.173 attack
Automatic report - Port Scan Attack
2020-03-24 16:29:09

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