City: Washington
Region: Virginia
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.
#
NetRange: 52.145.0.0 - 52.191.255.255
CIDR: 52.148.0.0/14, 52.145.0.0/16, 52.152.0.0/13, 52.146.0.0/15, 52.160.0.0/11
NetName: MSFT
NetHandle: NET-52-145-0-0-1
Parent: NET52 (NET-52-0-0-0-0)
NetType: Direct Allocation
OriginAS:
Organization: Microsoft Corporation (MSFT)
RegDate: 2015-11-24
Updated: 2021-12-14
Ref: https://rdap.arin.net/registry/ip/52.145.0.0
OrgName: Microsoft Corporation
OrgId: MSFT
Address: One Microsoft Way
City: Redmond
StateProv: WA
PostalCode: 98052
Country: US
RegDate: 1998-07-10
Updated: 2025-06-10
Comment: To report suspected security issues specific to traffic emanating from Microsoft online services, including the distribution of malicious content or other illicit or illegal material through a Microsoft online service, please submit reports to:
Comment: * https://cert.microsoft.com.
Comment:
Comment: For SPAM and other abuse issues, such as Microsoft Accounts, please contact:
Comment: * abuse@microsoft.com.
Comment:
Comment: To report security vulnerabilities in Microsoft products and services, please contact:
Comment: * secure@microsoft.com.
Comment:
Comment: For legal and law enforcement-related requests, please contact:
Comment: * msndcc@microsoft.com
Comment:
Comment: For routing, peering or DNS issues, please
Comment: contact:
Comment: * IOC@microsoft.com
Ref: https://rdap.arin.net/registry/entity/MSFT
OrgTechHandle: BEDAR6-ARIN
OrgTechName: Bedard, Dawn
OrgTechPhone: +1-425-538-6637
OrgTechEmail: dabedard@microsoft.com
OrgTechRef: https://rdap.arin.net/registry/entity/BEDAR6-ARIN
OrgRoutingHandle: CHATU3-ARIN
OrgRoutingName: Chaturmohta, Somesh
OrgRoutingPhone: +1-425-882-8080
OrgRoutingEmail: someshch@microsoft.com
OrgRoutingRef: https://rdap.arin.net/registry/entity/CHATU3-ARIN
OrgTechHandle: SINGH683-ARIN
OrgTechName: Singh, Prachi
OrgTechPhone: +1-425-707-5601
OrgTechEmail: pracsin@microsoft.com
OrgTechRef: https://rdap.arin.net/registry/entity/SINGH683-ARIN
OrgTechHandle: IPHOS5-ARIN
OrgTechName: IPHostmaster, IPHostmaster
OrgTechPhone: +1-425-538-6637
OrgTechEmail: iphostmaster@microsoft.com
OrgTechRef: https://rdap.arin.net/registry/entity/IPHOS5-ARIN
OrgAbuseHandle: MAC74-ARIN
OrgAbuseName: Microsoft Abuse Contact
OrgAbusePhone: +1-425-882-8080
OrgAbuseEmail: abuse@microsoft.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/MAC74-ARIN
OrgTechHandle: MRPD-ARIN
OrgTechName: Microsoft Routing, Peering, and DNS
OrgTechPhone: +1-425-882-8080
OrgTechEmail: IOC@microsoft.com
OrgTechRef: https://rdap.arin.net/registry/entity/MRPD-ARIN
#
# 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 9.10.3-P4-Ubuntu <<>> 52.146.20.92
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 53326
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;52.146.20.92. IN A
;; AUTHORITY SECTION:
. 30 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2026062302 1800 900 604800 86400
;; Query time: 10 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Wed Jun 24 08:00:12 CST 2026
;; MSG SIZE rcvd: 105Host 92.20.146.52.in-addr.arpa. not found: 3(NXDOMAIN)Server: 183.60.83.19
Address: 183.60.83.19#53
** server can't find 92.20.146.52.in-addr.arpa: NXDOMAIN| IP | Type | Details | Datetime |
|---|---|---|---|
| 123.20.18.156 | attackbots | (smtpauth) Failed SMTP AUTH login from 123.20.18.156 (VN/Vietnam/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-04-13 08:24:40 plain authenticator failed for ([127.0.0.1]) [123.20.18.156]: 535 Incorrect authentication data (set_id=info) |
2020-04-13 15:57:29 |
| 36.26.78.36 | attack | $f2bV_matches |
2020-04-13 15:48:33 |
| 185.175.93.6 | attackspambots | Port 50001 scan denied |
2020-04-13 16:02:07 |
| 218.16.121.2 | attackbotsspam | (sshd) Failed SSH login from 218.16.121.2 (-): 5 in the last 3600 secs |
2020-04-13 16:19:01 |
| 68.183.147.58 | attackbots | $f2bV_matches |
2020-04-13 15:46:57 |
| 94.131.243.27 | attackspambots | 2020-04-13T05:44:17.202892v22018076590370373 sshd[19854]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.131.243.27 user=root 2020-04-13T05:44:19.423713v22018076590370373 sshd[19854]: Failed password for root from 94.131.243.27 port 58046 ssh2 2020-04-13T05:49:12.413976v22018076590370373 sshd[15979]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.131.243.27 user=root 2020-04-13T05:49:14.132959v22018076590370373 sshd[15979]: Failed password for root from 94.131.243.27 port 36414 ssh2 2020-04-13T05:53:57.172909v22018076590370373 sshd[8028]: Invalid user test from 94.131.243.27 port 43288 ... |
2020-04-13 16:25:08 |
| 122.51.219.2 | attackspambots | Apr 13 09:05:21 v22019038103785759 sshd\[22333\]: Invalid user amarco from 122.51.219.2 port 36598 Apr 13 09:05:21 v22019038103785759 sshd\[22333\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.51.219.2 Apr 13 09:05:23 v22019038103785759 sshd\[22333\]: Failed password for invalid user amarco from 122.51.219.2 port 36598 ssh2 Apr 13 09:09:33 v22019038103785759 sshd\[22607\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.51.219.2 user=root Apr 13 09:09:35 v22019038103785759 sshd\[22607\]: Failed password for root from 122.51.219.2 port 50780 ssh2 ... |
2020-04-13 15:57:55 |
| 151.80.131.13 | attackbots | Apr 12 22:06:28 web9 sshd\[15361\]: Invalid user srv from 151.80.131.13 Apr 12 22:06:28 web9 sshd\[15361\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=151.80.131.13 Apr 12 22:06:30 web9 sshd\[15361\]: Failed password for invalid user srv from 151.80.131.13 port 44522 ssh2 Apr 12 22:10:43 web9 sshd\[16113\]: Invalid user qhsupport from 151.80.131.13 Apr 12 22:10:43 web9 sshd\[16113\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=151.80.131.13 |
2020-04-13 16:12:44 |
| 190.42.26.153 | attackbotsspam | Unauthorized connection attempt detected from IP address 190.42.26.153 to port 5358 |
2020-04-13 16:23:23 |
| 115.134.219.82 | attack | port scan and connect, tcp 80 (http) |
2020-04-13 16:21:56 |
| 206.189.171.204 | attackspambots | Apr 13 08:57:52 mail sshd[11804]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=206.189.171.204 user=root Apr 13 08:57:53 mail sshd[11804]: Failed password for root from 206.189.171.204 port 60180 ssh2 Apr 13 09:06:28 mail sshd[13103]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=206.189.171.204 user=root Apr 13 09:06:29 mail sshd[13103]: Failed password for root from 206.189.171.204 port 42736 ssh2 Apr 13 09:10:02 mail sshd[13492]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=206.189.171.204 user=root Apr 13 09:10:04 mail sshd[13492]: Failed password for root from 206.189.171.204 port 49890 ssh2 ... |
2020-04-13 15:59:34 |
| 106.54.16.96 | attack | Invalid user applmgr from 106.54.16.96 port 41134 |
2020-04-13 15:53:49 |
| 35.220.137.226 | attackspam | Apr 13 05:54:48 |
2020-04-13 15:54:20 |
| 144.217.47.174 | attackspambots | Port probing on unauthorized port 30568 |
2020-04-13 15:45:36 |
| 92.118.38.67 | attack | 2020-04-13 10:52:56 dovecot_login authenticator failed for \(User\) \[92.118.38.67\]: 535 Incorrect authentication data \(set_id=sanjiv@org.ua\)2020-04-13 10:53:42 dovecot_login authenticator failed for \(User\) \[92.118.38.67\]: 535 Incorrect authentication data \(set_id=sanjna@org.ua\)2020-04-13 10:54:02 dovecot_login authenticator failed for \(User\) \[92.118.38.67\]: 535 Incorrect authentication data \(set_id=sanjog@org.ua\) ... |
2020-04-13 15:55:39 |