`windowsupdate.com`

DNSSEC	⚠️ Not signed
NS	`ns1-205.azure-dns.com` ⭐
		A	2603:1061:0:700::cd^{🇺🇸 Microsoft2603:1000::/25 MICROSOFT}
			PTR	`ns1-205.azure-dns.com`
		A	13.107.236.205^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
			PTR	`ns1-205.azure-dns.com`
NS	`ns2-205.azure-dns.net`
		A	2620:1ec:8ec:700::cd^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns2-205.azure-dns.net`
		A	150.171.21.205^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
			PTR	`ns2-205.azure-dns.net`
NS	`ns3-205.azure-dns.org`
		A	2a01:111:4000:700::cd^{🇬🇧 Microsoft2a01:111:4000::/36}
			PTR	`ns3-205.azure-dns.org`
		A	204.14.183.205^{🇺🇸 Microsoft204.14.180.0/22}
			PTR	`ns3-205.azure-dns.org`
NS	`ns4-205.azure-dns.info`
		A	2620:1ec:bda:700::cd^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns4-205.azure-dns.info`
		A	208.84.5.205^{🇺🇸 Microsoft208.84.0.0/21 MICROSOFT}
			PTR	`ns4-205.azure-dns.info`
SOA	`ns1-205.azure-dns.com`azuredns-hostmaster@microsoft.com serial=1

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1778347571

rank #22191 globally
rank #10931 in the tld
WOT: SAFE (93/100)
📈 Tranco rank: #67

windowsupdate.com

Microsoft Windows Update Domain - An official Microsoft-owned domain used for delivering operating system updates, security patches, and driver updates to Windows devices.

Purpose

Hosts infrastructure for the Windows Update service
Used via subdomains (*.windowsupdate.com) rather than the bare domain
Delivers security updates, feature updates, and driver updates to Windows PCs
Part of Microsoft's update delivery network alongside update.microsoft.com and delivery.mp.microsoft.com

Technical Details

The bare domain (windowsupdate.com) does not resolve to a website
Microsoft uses wildcard subdomains for update delivery infrastructure
Connections typically use HTTP for update downloads (with content verification via signing)
Listed in Microsoft's official Windows 11 Enterprise connection endpoints documentation

Notes

This domain should not be confused with third-party or potentially malicious lookalike domains. The legitimate Windows Update service is built into Windows and communicates with Microsoft's servers automatically.

Subdomains

ctldl.windowsupdate.com

www.windowsupdate.com

download.windowsupdate.com

Same first word

Similar names

winodwsupdate.com

windoswupdate.com

updatewindows.com

updatewindows.org

windowupdates.com

windwosupdate.com

windowsuptade.com

updatewindows.nl

windowupdates.net

DNS History

9 records (4 active, 5 former)

●NSns1-205.azure-dns.com2020-05-09 → 2026-05-09 · 3 obs

○ 2020-04-07 17:17:26
● 2020-05-09 21:32:06
● 2026-05-09 17:47:24

○NSns1.msft.net2009-07-03 → 2020-04-07 · 4 obs

● 2009-07-03 07:02:26
● 2020-04-07 17:17:26
○ 2020-05-09 21:32:06
○ 2026-05-09 17:47:24

●NSns2-205.azure-dns.net2020-05-09 → 2026-05-09 · 3 obs

○ 2020-04-07 17:17:26
● 2020-05-09 21:32:06
● 2026-05-09 17:47:24

○NSns2.msft.net2009-07-03 → 2020-04-07 · 4 obs

● 2009-07-03 07:02:26
● 2020-04-07 17:17:26
○ 2020-05-09 21:32:06
○ 2026-05-09 17:47:24

●NSns3-205.azure-dns.org2020-05-09 → 2026-05-09 · 3 obs

○ 2020-04-07 17:17:26
● 2020-05-09 21:32:06
● 2026-05-09 17:47:24

○NSns3.msft.net2009-07-03 → 2020-04-07 · 4 obs

● 2009-07-03 07:02:26
● 2020-04-07 17:17:26
○ 2020-05-09 21:32:06
○ 2026-05-09 17:47:24

●NSns4-205.azure-dns.info2020-05-09 → 2026-05-09 · 3 obs

○ 2020-04-07 17:17:26
● 2020-05-09 21:32:06
● 2026-05-09 17:47:24

○NSns4.msft.net2009-07-03 → 2020-04-07 · 4 obs

● 2009-07-03 07:02:26
● 2020-04-07 17:17:26
○ 2020-05-09 21:32:06
○ 2026-05-09 17:47:24

○NSns5.msft.net2009-07-03 → 2009-07-03 · 3 obs

● 2009-07-03 07:02:26
○ 2015-09-03 05:44:50
○ 2026-05-09 17:47:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
windowsupdate.com	ns1-205.azure-dns.com, ns2-205.azure-dns.net, ns4-205.azure-dns.info, ns3-205.azure-dns.org	2 records

✅ Authoritative Response

Server:150.171.21.205

NS records: ns1-205.azure-dns.com, ns2-205.azure-dns.net, ns4-205.azure-dns.info, ns3-205.azure-dns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for windowsupdate.com (unsigned zone)

⏱️ Timing

Total: 410ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns1-205.azure-dns.com, ns2-205.azure-dns.net...`
SOA	1	`ns1-205.azure-dns.com azuredns-hostmaste`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1-205.azure-dns.com, ns1-205.azure-dns.com)

Analysis

Hierarchy

windowsupdate.com is a parent of ctldl.windowsupdate.com, www.windowsupdate.com and download.windowsupdate.com.

Name Servers

windowsupdate.com is delegated to four name servers: ns1-205.azure-dns.com, ns4-205.azure-dns.info, ns2-205.azure-dns.net and ns3-205.azure-dns.org.

windowsupdate.com at least partially shares name servers with other domains, for instance 176.74.in-addr.arpa, 241.237.191.in-addr.arpa, 4.232.191.in-addr.arpa, 18.68.in-addr.arpa and 41.20.in-addr.arpa.

Host names with two IP numbers:

ns1-205.azure-dns.com points to: 2603:1061:0:700::cd and 13.107.236.205.

ns4-205.azure-dns.info points to: 2620:1ec:bda:700::cd and 208.84.5.205.

ns2-205.azure-dns.net points to: 2620:1ec:8ec:700::cd and 150.171.21.205.

ns3-205.azure-dns.org points to: 2a01:111:4000:700::cd and 204.14.183.205.

windowsupdate.com - robtex.com