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: Daan District

Region: Taipei

Country: Taiwan, China

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:
% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to '163.13.0.0 - 163.28.255.255'

% Abuse contact for '163.13.0.0 - 163.28.255.255' is 'noc@mail.moe.gov.tw'

inetnum:        163.13.0.0 - 163.28.255.255
netname:        TANET-B
descr:          imported inetnum object for MOEC
country:        TW
admin-c:        TA61-AP
tech-c:         TA61-AP
abuse-c:        AT939-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-TANET-TW
last-modified:  2025-11-07T01:38:34Z
source:         APNIC

irt:            IRT-TANET-TW
address:        Ministry of Education computer Center
address:        12F, No 106, Sec. 2, Heping E. Rd., Taipei
e-mail:         noc@mail.moe.gov.tw
abuse-mailbox:  noc@mail.moe.gov.tw
admin-c:        TWA2-AP
tech-c:         TWA2-AP
auth:           # Filtered
mnt-by:         MAINT-TW-TWNIC
last-modified:  2025-11-06T07:51:48Z
source:         APNIC

role:           ABUSE TWNICAP
country:        ZZ
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan
phone:          +000000000
e-mail:         hostmaster@twnic.tw
admin-c:        TWA2-AP
tech-c:         TWA2-AP
nic-hdl:        AT939-AP
remarks:        Generated from irt object IRT-TWNIC-AP
remarks:        hostmaster@twnic.tw was validated on 2025-05-23
abuse-mailbox:  hostmaster@twnic.tw
mnt-by:         APNIC-ABUSE
last-modified:  2025-05-23T00:02:10Z
source:         APNIC

person:         TANET ADMIN
nic-hdl:        TA61-AP
e-mail:         noc@mail.moe.gov.tw
address:        12F, No 106, Sec. 2, Heping E. Rd., Taipei
address:        Taipei, 106, R.O.C
phone:          +886-2-7712-9079
fax-no:         +886-2-2737-7043
country:        TW
mnt-by:         MAINT-TW-TWNIC
last-modified:  2025-08-28T08:29:03Z
source:         APNIC
remarks:        (hid:K92-TW)

% Information related to '163.21.0.0 - 163.21.255.255'

inetnum:        163.21.0.0 - 163.21.255.255
netname:        T-163-21-NET
descr:          Ministry of Education computer Center
descr:          12F, No 106, Sec.2,Hoping E. Rd.
descr:          Taipei Taiwan
country:        TW
admin-c:        AM5-TW
tech-c:         AM5-TW
mnt-by:         MAINT-TW-TWNIC
changed:        noc@mail.moe.gov.tw 19920519
status:         ASSIGNED NON-PORTABLE
remarks:        This information has been partially mirrored by APNIC from
remarks:        TWNIC. To obtain more specific information, please use the
remarks:        TWNIC whois server at whois.twnic.net.
source:         TWNIC

person:         Admin MOECC
address:        Ministry of Education Computer Center
address:        12F, No 106, Sec.2,Hoping E. Rd.,
address:        Taipei Taiwan 106 Taiwan
country:        TW
phone:          +886-2-2737-7044
fax-no:         +886-2-2737-7043
e-mail:         abuse@moe.edu.tw
nic-hdl:        AM5-TW
changed:        hostmaster@twnic.net 20030401
remarks:        This information has been partially mirrored by APNIC from
remarks:        TWNIC. To obtain more specific information, please use the
remarks:        TWNIC whois server at whois.twnic.net.
source:         TWNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU4)
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 163.21.233.251
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 64786
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;163.21.233.251.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2026070300 1800 900 604800 86400

;; Query time: 10 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Jul 03 16:30:31 CST 2026
;; MSG SIZE  rcvd: 107
Host info
Host 251.233.21.163.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 251.233.21.163.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
185.36.81.242 attack
Rude login attack (13 tries in 1d)
2020-02-10 18:41:01
178.220.49.52 attack
Did not receive identification string
2020-02-10 18:56:29
190.8.80.42 attackspambots
Feb  9 23:45:06 hpm sshd\[11976\]: Invalid user nt from 190.8.80.42
Feb  9 23:45:06 hpm sshd\[11976\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.8.80.42
Feb  9 23:45:08 hpm sshd\[11976\]: Failed password for invalid user nt from 190.8.80.42 port 49970 ssh2
Feb  9 23:48:48 hpm sshd\[12459\]: Invalid user aaz from 190.8.80.42
Feb  9 23:48:48 hpm sshd\[12459\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.8.80.42
2020-02-10 18:52:22
115.75.226.30 attack
Automatic report - Port Scan Attack
2020-02-10 19:21:18
36.92.203.127 attackspam
20/2/9@23:50:30: FAIL: Alarm-Network address from=36.92.203.127
...
2020-02-10 19:22:11
113.164.8.154 attackspam
20/2/9@23:50:59: FAIL: Alarm-Network address from=113.164.8.154
...
2020-02-10 18:56:45
203.113.164.18 attackspambots
Honeypot attack, port: 445, PTR: PTR record not found
2020-02-10 19:04:20
191.255.232.53 attackbots
IP blocked
2020-02-10 19:15:51
119.86.94.89 attackbots
/index.php%3Fs=/index/
2020-02-10 18:47:50
121.58.229.98 attackspambots
Honeypot attack, port: 445, PTR: rdns98.convergeict.com.
2020-02-10 18:41:20
171.236.58.166 attack
Honeypot attack, port: 445, PTR: dynamic-ip-adsl.viettel.vn.
2020-02-10 19:13:33
91.121.14.203 attackbots
$f2bV_matches
2020-02-10 19:14:06
151.80.45.126 attack
Feb 10 12:06:56 SilenceServices sshd[10421]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=151.80.45.126
Feb 10 12:06:58 SilenceServices sshd[10421]: Failed password for invalid user wpe from 151.80.45.126 port 52580 ssh2
Feb 10 12:09:24 SilenceServices sshd[12368]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=151.80.45.126
2020-02-10 19:20:22
218.164.8.218 attackbots
Fail2Ban Ban Triggered
2020-02-10 18:50:12
119.29.11.100 attackbots
Honeypot attack, port: 445, PTR: PTR record not found
2020-02-10 19:03:23

Recently Reported IPs

59.58.225.235 118.145.245.82 106.53.194.135 59.39.214.180
113.229.131.242 111.58.142.25 111.60.144.35 111.58.179.155
183.212.68.90 49.75.221.104 183.226.2.100 42.58.33.143
111.44.196.112 39.162.174.129 183.197.174.7 112.2.87.102
39.148.31.7 36.159.157.201 123.88.243.84 218.69.74.81