City: unknown
Region: unknown
Country: United States
Internet Service Provider: unknown
Hostname: unknown
Organization: unknown
Usage Type: unknown
#
# 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
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
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
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
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: 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
# 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.
#b'
; <<>> DiG 9.11.3-1ubuntu1.15-Ubuntu <<>> 21.173.81.78
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 50105
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;21.173.81.78. IN A
;; Query time: 2 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Sat May 16 07:36:20 CST 2026
;; MSG SIZE rcvd: 41
'Host 78.81.173.21.in-addr.arpa. not found: 3(NXDOMAIN)Server: 183.60.83.19
Address: 183.60.83.19#53
** server can't find 78.81.173.21.in-addr.arpa: NXDOMAIN| IP | Type | Details | Datetime |
|---|---|---|---|
| 220.186.163.5 | attack | Oct 5 22:36:39 * sshd[4572]: Failed password for root from 220.186.163.5 port 45088 ssh2 |
2020-10-06 05:30:05 |
| 197.39.50.128 | attackbotsspam | 23/tcp [2020-10-04]1pkt |
2020-10-06 05:37:16 |
| 111.231.88.39 | attack | SSH login attempts. |
2020-10-06 05:50:18 |
| 114.113.126.181 | attackbotsspam | Oct 5 22:46:27 marvibiene sshd[21096]: Failed password for root from 114.113.126.181 port 51562 ssh2 Oct 5 22:50:24 marvibiene sshd[21288]: Failed password for root from 114.113.126.181 port 56556 ssh2 |
2020-10-06 05:49:02 |
| 112.85.42.53 | attack | Oct 5 21:24:26 rush sshd[4736]: Failed password for root from 112.85.42.53 port 35668 ssh2 Oct 5 21:24:40 rush sshd[4736]: Failed password for root from 112.85.42.53 port 35668 ssh2 Oct 5 21:24:40 rush sshd[4736]: error: maximum authentication attempts exceeded for root from 112.85.42.53 port 35668 ssh2 [preauth] ... |
2020-10-06 05:30:53 |
| 59.42.37.213 | attackspam | 2020-10-05T01:12:24.004360mail.standpoint.com.ua sshd[7094]: Failed password for root from 59.42.37.213 port 6259 ssh2 2020-10-05T01:14:17.868094mail.standpoint.com.ua sshd[7343]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=59.42.37.213 user=root 2020-10-05T01:14:19.552962mail.standpoint.com.ua sshd[7343]: Failed password for root from 59.42.37.213 port 7175 ssh2 2020-10-05T01:16:12.524068mail.standpoint.com.ua sshd[7608]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=59.42.37.213 user=root 2020-10-05T01:16:14.329398mail.standpoint.com.ua sshd[7608]: Failed password for root from 59.42.37.213 port 7740 ssh2 ... |
2020-10-06 06:05:31 |
| 106.12.91.225 | attack | Oct 6 02:26:12 gw1 sshd[13066]: Failed password for root from 106.12.91.225 port 38314 ssh2 ... |
2020-10-06 05:40:34 |
| 103.236.253.28 | attack | 2020-10-05T02:30:14.824882decisionconcepts.com sshd[41651]: Invalid user 29627 from 103.236.253.28 port 37983 2020-10-05T02:30:14.833527decisionconcepts.com sshd[41651]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.236.253.28 2020-10-05T02:30:14.824882decisionconcepts.com sshd[41651]: Invalid user 29627 from 103.236.253.28 port 37983 2020-10-05T02:30:16.850974decisionconcepts.com sshd[41651]: Failed password for invalid user 29627 from 103.236.253.28 port 37983 ssh2 ... |
2020-10-06 06:04:50 |
| 115.63.36.20 | attackbotsspam | Listed on abuseat.org plus zen-spamhaus / proto=17 . srcport=23644 . dstport=1900 . (3554) |
2020-10-06 05:30:26 |
| 185.132.53.124 | attackbots | fail2ban detected bruce force on ssh iptables |
2020-10-06 05:46:28 |
| 94.182.222.66 | attackspam | 1433/tcp [2020-10-04]1pkt |
2020-10-06 05:45:01 |
| 49.233.111.193 | attackbots | [N10.H2.VM2] Port Scanner Detected Blocked by UFW |
2020-10-06 06:09:18 |
| 144.217.75.30 | attackbotsspam | Cowrie Honeypot: 10 unauthorised SSH/Telnet login attempts between 2020-10-05T20:31:28Z and 2020-10-05T21:21:28Z |
2020-10-06 05:39:46 |
| 182.176.167.172 | attackspambots | Unauthorised access (Oct 4) SRC=182.176.167.172 LEN=40 TOS=0x10 PREC=0x40 TTL=53 ID=3635 TCP DPT=23 WINDOW=1970 SYN |
2020-10-06 06:05:43 |
| 140.143.38.123 | attackspambots | Oct 5 19:23:15 jane sshd[22141]: Failed password for root from 140.143.38.123 port 36144 ssh2 ... |
2020-10-06 05:51:58 |