`microsoft.update-software.workers.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:cbf4^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:252f^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.37.47^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.203.244^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.37.47, 172.67.203.244
		IPv6 hints	2606:4700:3030::ac43:cbf4, 2606:4700:3031::6815:252f
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=13, name=cloudflare-ech.com

`update-software.workers.dev`

	DNSSEC	⚠️ Not signed
	NS	`brit.ns.cloudflare.com` ⭐
	NS	`elmo.ns.cloudflare.com`
	SOA	`brit.ns.cloudflare.com`dns@cloudflare.com serial=2401916284

Same first word

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DNS History

8 records (4 active, 4 former)

●A104.21.37.472026-04-04 → 2026-04-29 · 4 obs

● 2026-04-04 06:58:32
○ 2026-04-10 07:41:08
● 2026-04-23 12:21:02
● 2026-04-29 19:57:30

●A172.67.203.2442026-04-04 → 2026-04-29 · 4 obs

● 2026-04-04 06:58:32
○ 2026-04-10 07:41:08
● 2026-04-23 12:21:02
● 2026-04-29 19:57:30

○A188.114.96.02026-04-10 → 2026-04-10 · 4 obs

○ 2026-04-04 06:58:32
● 2026-04-10 07:41:08
○ 2026-04-23 12:21:02
○ 2026-04-29 19:57:30

○A188.114.97.02026-04-10 → 2026-04-10 · 4 obs

○ 2026-04-04 06:58:32
● 2026-04-10 07:41:08
○ 2026-04-23 12:21:02
○ 2026-04-29 19:57:30

●A2606:4700:3030::ac43:cbf42026-04-04 → 2026-04-29 · 4 obs

● 2026-04-04 06:58:32
○ 2026-04-10 07:41:08
● 2026-04-23 12:21:02
● 2026-04-29 19:57:30

●A2606:4700:3031::6815:252f2026-04-04 → 2026-04-29 · 4 obs

● 2026-04-04 06:58:32
○ 2026-04-10 07:41:08
● 2026-04-23 12:21:02
● 2026-04-29 19:57:30

○A2a06:98c1:3120::2026-04-10 → 2026-04-10 · 4 obs

○ 2026-04-04 06:58:32
● 2026-04-10 07:41:08
○ 2026-04-23 12:21:02
○ 2026-04-29 19:57:30

○A2a06:98c1:3121::2026-04-10 → 2026-04-10 · 4 obs

○ 2026-04-04 06:58:32
● 2026-04-10 07:41:08
○ 2026-04-23 12:21:02
○ 2026-04-29 19:57:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
workers.dev	clyde.ns.cloudflare.com, sofia.ns.cloudflare.com	-
update-software.workers.dev	brit.ns.cloudflare.com, elmo.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.78

NS records: brit.ns.cloudflare.com, elmo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for workers.dev (unsigned zone)

⏱️ Timing

Total: 181ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.37.47, 172.67.203.244`
AAAA	2	`2606:4700:3030::ac43:cbf4, 2606:4700:3031::6815:252f`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

Analysis

IP Addresses

microsoft.update-software.workers.dev points to four IP numbers: 2606:4700:3030::ac43:cbf4, 2606:4700:3031::6815:252f, 104.21.37.47 and 172.67.203.244.

Other host names, for instance l2db.com.ua, twosilvertrumpets.ca, advancedrf.com, wgrc.ie and www.cursivetextguru.com share IP numbers with microsoft.update-software.workers.dev.

microsoft.update-software.workers.dev - robtex.com