21.254.12.66 - IPInfo

Basic Info

City: unknown

Region: unknown

Country: United States

Internet Service Provider: unknown

Hostname: unknown

Organization: unknown

Usage Type: unknown

Comments:

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Comments on same subnet:

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Whois info:

#
# 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:        2026-08-12
Ref:            https://rdap.arin.net/registry/entity/USDDD


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

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

# 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: 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

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

# 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 info:

; <<>> DiG 9.10.3-P4-Ubuntu <<>> 21.254.12.66
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 9243
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;21.254.12.66.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2026090400 1800 900 604800 86400

;; Query time: 8 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Sep 04 13:57:25 CST 2026
;; MSG SIZE  rcvd: 105

Host info

Host 66.12.254.21.in-addr.arpa. not found: 3(NXDOMAIN)

Nslookup info:

Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 66.12.254.21.in-addr.arpa: NXDOMAIN

Related IP info:

Related comments:

IP	Type	Details	Datetime
112.85.42.176	attackspambots	Nov 27 09:10:58 server sshd\[29645\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.176 user=root Nov 27 09:10:58 server sshd\[29647\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.176 user=root Nov 27 09:10:58 server sshd\[29641\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.176 user=root Nov 27 09:10:59 server sshd\[29651\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.176 user=root Nov 27 09:11:00 server sshd\[29645\]: Failed password for root from 112.85.42.176 port 38918 ssh2 ...	2019-11-27 14:21:41
112.85.42.180	attack	Nov 27 07:02:06 eventyay sshd[9253]: Failed password for root from 112.85.42.180 port 28174 ssh2 Nov 27 07:02:20 eventyay sshd[9253]: error: maximum authentication attempts exceeded for root from 112.85.42.180 port 28174 ssh2 [preauth] Nov 27 07:02:26 eventyay sshd[9262]: Failed password for root from 112.85.42.180 port 57807 ssh2 ...	2019-11-27 14:03:17
132.232.132.103	attackspam	Nov 27 07:31:17 sauna sshd[36818]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=132.232.132.103 Nov 27 07:31:19 sauna sshd[36818]: Failed password for invalid user papa123 from 132.232.132.103 port 49776 ssh2 ...	2019-11-27 13:41:28
64.202.188.205	attackspam	fail2ban honeypot	2019-11-27 14:06:13
178.62.95.188	attackbots	11/27/2019-05:56:20.656675 178.62.95.188 Protocol: 6 ET POLICY Cleartext WordPress Login	2019-11-27 14:17:45
106.12.176.146	attackspam	2019-11-27T05:34:40.880867abusebot-2.cloudsearch.cf sshd\[30368\]: Invalid user lavalle from 106.12.176.146 port 13103	2019-11-27 13:39:54
209.85.210.60	attackspam	Blocked 209.85.210.60 For sending Not Local count 3	2019-11-27 14:11:55
113.200.156.180	attack	Nov 27 07:00:49 vps666546 sshd\[21895\]: Invalid user mysql from 113.200.156.180 port 9558 Nov 27 07:00:49 vps666546 sshd\[21895\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=113.200.156.180 Nov 27 07:00:51 vps666546 sshd\[21895\]: Failed password for invalid user mysql from 113.200.156.180 port 9558 ssh2 Nov 27 07:05:36 vps666546 sshd\[22076\]: Invalid user shoaf from 113.200.156.180 port 14624 Nov 27 07:05:36 vps666546 sshd\[22076\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=113.200.156.180 ...	2019-11-27 14:18:42
124.156.185.149	attack	Nov 27 08:02:31 sauna sshd[37414]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=124.156.185.149 Nov 27 08:02:33 sauna sshd[37414]: Failed password for invalid user test from 124.156.185.149 port 27831 ssh2 ...	2019-11-27 14:18:28
3.93.103.139	attack	3.93.103.139 - - \[27/Nov/2019:05:57:15 +0100\] "POST /wp-login.php HTTP/1.0" 200 6655 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0" 3.93.103.139 - - \[27/Nov/2019:05:57:18 +0100\] "POST /wp-login.php HTTP/1.0" 200 6493 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0" 3.93.103.139 - - \[27/Nov/2019:05:57:21 +0100\] "POST /wp-login.php HTTP/1.0" 200 6492 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"	2019-11-27 13:45:16
51.68.192.106	attackbots	Invalid user admin from 51.68.192.106 port 56858	2019-11-27 14:00:45
182.73.182.142	attackbots	Unauthorised access (Nov 27) SRC=182.73.182.142 LEN=48 TTL=118 ID=25035 DF TCP DPT=445 WINDOW=8192 SYN Unauthorised access (Nov 27) SRC=182.73.182.142 LEN=48 TTL=120 ID=27980 DF TCP DPT=445 WINDOW=8192 SYN	2019-11-27 14:01:38
62.210.151.21	attackbots	\[2019-11-27 00:59:03\] SECURITY\[2765\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-11-27T00:59:03.213-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="000441204918031",SessionID="0x7f26c42f7788",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.210.151.21/61670",ACLName="no_extension_match" \[2019-11-27 00:59:19\] SECURITY\[2765\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-11-27T00:59:19.562-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="900441204918031",SessionID="0x7f26c425d858",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.210.151.21/60704",ACLName="no_extension_match" \[2019-11-27 00:59:27\] SECURITY\[2765\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-11-27T00:59:27.403-0500",Severity="Error",Service="SIP",EventVersion="1",AccountID="800441204918031",SessionID="0x7f26c4a90648",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.210.151.21/51623",ACLName="no_ext	2019-11-27 14:12:25
45.64.132.33	attack	Unauthorised access (Nov 27) SRC=45.64.132.33 LEN=52 TTL=118 ID=30390 DF TCP DPT=445 WINDOW=8192 SYN	2019-11-27 13:47:10
54.37.151.239	attackspam	Nov 27 06:38:01 ArkNodeAT sshd\[23823\]: Invalid user buchko from 54.37.151.239 Nov 27 06:38:01 ArkNodeAT sshd\[23823\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=54.37.151.239 Nov 27 06:38:03 ArkNodeAT sshd\[23823\]: Failed password for invalid user buchko from 54.37.151.239 port 52386 ssh2	2019-11-27 13:45:35

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