必须是合法有效的IP地址, 可以是IPv4或者是IPv6, 例如127.0.0.1或者2001:DB8:0:0:8:800:200C:417A
基本信息:

城市(city): unknown

省份(region): unknown

国家(country): United States

运营商(isp): unknown

主机名(hostname): unknown

机构(organization): unknown

使用类型(Usage Type): unknown

用户上报:
暂无关于此IP的讨论, 沙发请点上方按钮
相同子网IP讨论:
暂无关于此IP所属子网相关IP的讨论.
WHOIS信息:
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#



# start

NetRange:       21.0.0.0 - 21.255.255.255
CIDR:           21.0.0.0/8
NetName:        DNIC-SNET-021
NetHandle:      NET-21-0-0-0-1
Parent:          ()
NetType:        Direct Allocation
OriginAS:       
Organization:   United States Department of Defense (DoD) (USDDD)
RegDate:        1991-07-01
Updated:        2025-09-05
Ref:            https://rdap.arin.net/registry/ip/21.0.0.0



OrgName:        United States Department of Defense (DoD)
OrgId:          USDDD
Address:        3990 E. Broad Street
City:           Columbus
StateProv:      OH
PostalCode:     43218
Country:        US
RegDate:        2007-01-12
Updated:        2025-03-13
Ref:            https://rdap.arin.net/registry/entity/USDDD


OrgTechHandle: MIL-HSTMST-ARIN
OrgTechName:   Network DoD
OrgTechPhone:  +1-844-347-2457 
OrgTechEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
OrgTechRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN

OrgAbuseHandle: MIL-HSTMST-ARIN
OrgAbuseName:   Network DoD
OrgAbusePhone:  +1-844-347-2457 
OrgAbuseEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
OrgAbuseRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN

OrgNOCHandle: MIL-HSTMST-ARIN
OrgNOCName:   Network DoD
OrgNOCPhone:  +1-844-347-2457 
OrgNOCEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
OrgNOCRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN

OrgTechHandle: REGIS10-ARIN
OrgTechName:   Registration
OrgTechPhone:  +1-844-347-2457 
OrgTechEmail:  disa.columbus.ns.mbx.arin-registrations@mail.mil
OrgTechRef:    https://rdap.arin.net/registry/entity/REGIS10-ARIN

# end


# start

NetRange:       21.0.0.0 - 21.255.255.255
CIDR:           21.0.0.0/8
NetName:        DNIC-SNET-021
NetHandle:      NET-21-0-0-0-2
Parent:         DNIC-SNET-021 (NET-21-0-0-0-1)
NetType:        Reallocated
OriginAS:       
Organization:   DoD Network Information Center (DNIC)
RegDate:        2025-09-05
Updated:        2025-09-05
Ref:            https://rdap.arin.net/registry/ip/21.0.0.0


OrgName:        DoD Network Information Center
OrgId:          DNIC
Address:        3990 E. Broad Street
City:           Columbus
StateProv:      OH
PostalCode:     43218
Country:        US
RegDate:        
Updated:        2025-03-13
Ref:            https://rdap.arin.net/registry/entity/DNIC


OrgTechHandle: MIL-HSTMST-ARIN
OrgTechName:   Network DoD
OrgTechPhone:  +1-844-347-2457 
OrgTechEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
OrgTechRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN

OrgAbuseHandle: REGIS10-ARIN
OrgAbuseName:   Registration
OrgAbusePhone:  +1-844-347-2457 
OrgAbuseEmail:  disa.columbus.ns.mbx.arin-registrations@mail.mil
OrgAbuseRef:    https://rdap.arin.net/registry/entity/REGIS10-ARIN

OrgTechHandle: REGIS10-ARIN
OrgTechName:   Registration
OrgTechPhone:  +1-844-347-2457 
OrgTechEmail:  disa.columbus.ns.mbx.arin-registrations@mail.mil
OrgTechRef:    https://rdap.arin.net/registry/entity/REGIS10-ARIN

# end



#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
DIG信息:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 21.113.38.251
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 27434
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;21.113.38.251.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2026022700 1800 900 604800 86400

;; Query time: 8 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 27 13:41:53 CST 2026
;; MSG SIZE  rcvd: 106
HOST信息:
Host 251.38.113.21.in-addr.arpa. not found: 3(NXDOMAIN)
NSLOOKUP信息:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 251.38.113.21.in-addr.arpa: NXDOMAIN
相关IP信息:
最新评论:
IP 类型 评论内容 时间
222.186.30.35 attackbots
Sep  5 17:29:01 minden010 sshd[17918]: Failed password for root from 222.186.30.35 port 22306 ssh2
Sep  5 17:29:12 minden010 sshd[17935]: Failed password for root from 222.186.30.35 port 41963 ssh2
...
2020-09-05 23:32:51
54.38.187.5 attackbotsspam
Invalid user admin from 54.38.187.5 port 49820
2020-09-05 23:11:16
175.215.138.52 attackspam
Honeypot attack, port: 81, PTR: PTR record not found
2020-09-05 23:56:51
213.32.23.54 attackspam
Sep  5 15:43:09 plex-server sshd[1514642]: Failed password for root from 213.32.23.54 port 40052 ssh2
Sep  5 15:46:48 plex-server sshd[1516346]: Invalid user courier from 213.32.23.54 port 45072
Sep  5 15:46:48 plex-server sshd[1516346]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=213.32.23.54 
Sep  5 15:46:48 plex-server sshd[1516346]: Invalid user courier from 213.32.23.54 port 45072
Sep  5 15:46:50 plex-server sshd[1516346]: Failed password for invalid user courier from 213.32.23.54 port 45072 ssh2
...
2020-09-05 23:50:19
185.250.205.84 attackbots
firewall-block, port(s): 8752/tcp, 14931/tcp, 14977/tcp, 49788/tcp, 59231/tcp, 64085/tcp
2020-09-05 23:17:05
187.189.51.117 attackbotsspam
2020-09-05T06:32:30.6241811495-001 sshd[36331]: Failed password for invalid user willy from 187.189.51.117 port 64517 ssh2
2020-09-05T06:36:39.0374281495-001 sshd[36549]: Invalid user jordan from 187.189.51.117 port 14811
2020-09-05T06:36:39.0438751495-001 sshd[36549]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=fixed-187-189-51-117.totalplay.net
2020-09-05T06:36:39.0374281495-001 sshd[36549]: Invalid user jordan from 187.189.51.117 port 14811
2020-09-05T06:36:40.7808611495-001 sshd[36549]: Failed password for invalid user jordan from 187.189.51.117 port 14811 ssh2
2020-09-05T06:40:45.4950591495-001 sshd[36738]: Invalid user user from 187.189.51.117 port 21598
...
2020-09-05 23:31:37
218.92.0.212 attackbotsspam
Sep  5 17:50:31 marvibiene sshd[13278]: Failed password for root from 218.92.0.212 port 50023 ssh2
Sep  5 17:50:37 marvibiene sshd[13278]: Failed password for root from 218.92.0.212 port 50023 ssh2
2020-09-05 23:55:17
143.204.194.67 attackspambots
TCP Port: 443     invalid blocked  Listed on   zen-spamhaus      Client xx.xx.6.14     (164)
2020-09-05 23:23:25
78.218.141.57 attack
Sep  5 03:49:43 php1 sshd\[32670\]: Invalid user jimmy from 78.218.141.57
Sep  5 03:49:43 php1 sshd\[32670\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=78.218.141.57
Sep  5 03:49:46 php1 sshd\[32670\]: Failed password for invalid user jimmy from 78.218.141.57 port 43290 ssh2
Sep  5 03:51:05 php1 sshd\[305\]: Invalid user lxl from 78.218.141.57
Sep  5 03:51:05 php1 sshd\[305\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=78.218.141.57
2020-09-05 23:40:07
218.75.110.51 attack
2020-09-04 UTC: (3x) - sakamoto,user(2x)
2020-09-05 23:36:49
141.98.10.214 attackbotsspam
Sep  5 21:59:26 webhost01 sshd[25284]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=141.98.10.214
Sep  5 21:59:28 webhost01 sshd[25284]: Failed password for invalid user admin from 141.98.10.214 port 37065 ssh2
...
2020-09-05 23:18:34
141.98.10.212 attack
2020-09-05T17:26:19.287036centos sshd[32520]: Failed password for invalid user Administrator from 141.98.10.212 port 40491 ssh2
2020-09-05T17:26:55.870973centos sshd[32603]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=141.98.10.212  user=root
2020-09-05T17:26:57.855514centos sshd[32603]: Failed password for root from 141.98.10.212 port 42089 ssh2
...
2020-09-05 23:28:25
51.11.136.167 attackspam
h
2020-09-05 23:42:10
180.149.126.205 attackspambots
 TCP (SYN) 180.149.126.205:22832 -> port 8081, len 44
2020-09-05 23:25:09
37.187.16.30 attack
Time:     Sat Sep  5 17:30:43 2020 +0200
IP:       37.187.16.30 (FR/France/server02.phus.ovh)
Failures: 5 (sshd)
Interval: 3600 seconds
Blocked:  Permanent Block [LF_SSHD]

Log entries:

Sep  5 17:11:31 mail-03 sshd[13674]: Invalid user ts3 from 37.187.16.30 port 40338
Sep  5 17:11:33 mail-03 sshd[13674]: Failed password for invalid user ts3 from 37.187.16.30 port 40338 ssh2
Sep  5 17:24:07 mail-03 sshd[13898]: Failed password for root from 37.187.16.30 port 39664 ssh2
Sep  5 17:30:40 mail-03 sshd[14043]: Invalid user jx from 37.187.16.30 port 45120
Sep  5 17:30:42 mail-03 sshd[14043]: Failed password for invalid user jx from 37.187.16.30 port 45120 ssh2
2020-09-05 23:39:02

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