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: United States

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:
#
# 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


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: 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

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

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

# 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 info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 21.36.140.126
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 7926
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;21.36.140.126.			IN	A

;; AUTHORITY SECTION:
.			29	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2026092700 1800 900 604800 86400

;; Query time: 8 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Sun Sep 27 14:26:17 CST 2026
;; MSG SIZE  rcvd: 106
Host info
Host 126.140.36.21.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 126.140.36.21.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
122.227.2.130 attack
Unauthorized connection attempt from IP address 122.227.2.130 on Port 445(SMB)
2019-11-29 21:46:09
101.102.9.79 attackbots
Unauthorised access (Nov 29) SRC=101.102.9.79 LEN=40 TTL=50 ID=6776 TCP DPT=8080 WINDOW=4048 SYN
2019-11-29 22:21:48
118.71.153.194 attack
Unauthorized connection attempt from IP address 118.71.153.194 on Port 445(SMB)
2019-11-29 21:47:42
1.10.252.78 attackspambots
Unauthorized connection attempt from IP address 1.10.252.78 on Port 445(SMB)
2019-11-29 22:15:47
46.221.46.2 attackspam
Automatic report - Port Scan Attack
2019-11-29 22:20:56
45.82.153.79 attack
Nov 29 14:44:06 relay postfix/smtpd\[16042\]: warning: unknown\[45.82.153.79\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Nov 29 14:44:32 relay postfix/smtpd\[16042\]: warning: unknown\[45.82.153.79\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Nov 29 14:45:12 relay postfix/smtpd\[18185\]: warning: unknown\[45.82.153.79\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Nov 29 14:45:29 relay postfix/smtpd\[16042\]: warning: unknown\[45.82.153.79\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Nov 29 14:58:40 relay postfix/smtpd\[23625\]: warning: unknown\[45.82.153.79\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2019-11-29 22:01:25
125.14.212.140 attackbots
port scan and connect, tcp 23 (telnet)
2019-11-29 21:38:53
118.69.157.43 attackspam
Unauthorized connection attempt from IP address 118.69.157.43 on Port 445(SMB)
2019-11-29 21:49:15
154.8.164.214 attackbotsspam
Nov 29 08:56:53 vps691689 sshd[27295]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.8.164.214
Nov 29 08:56:56 vps691689 sshd[27295]: Failed password for invalid user elissa from 154.8.164.214 port 56802 ssh2
...
2019-11-29 21:54:56
117.222.47.194 attackbotsspam
Unauthorized connection attempt from IP address 117.222.47.194 on Port 445(SMB)
2019-11-29 22:07:43
14.187.6.115 attackbots
Unauthorized connection attempt from IP address 14.187.6.115 on Port 445(SMB)
2019-11-29 21:41:55
116.97.203.159 attack
Unauthorized connection attempt from IP address 116.97.203.159 on Port 445(SMB)
2019-11-29 21:56:43
177.101.245.180 attackbots
Unauthorized connection attempt from IP address 177.101.245.180 on Port 445(SMB)
2019-11-29 22:12:08
85.105.172.145 attack
Automatic report - Banned IP Access
2019-11-29 21:44:19
139.199.58.118 attackbotsspam
Nov 29 08:47:51 www5 sshd\[53941\]: Invalid user baseclean from 139.199.58.118
Nov 29 08:47:51 www5 sshd\[53941\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.199.58.118
Nov 29 08:47:53 www5 sshd\[53941\]: Failed password for invalid user baseclean from 139.199.58.118 port 38966 ssh2
...
2019-11-29 21:52:33

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