`claude.sem6688.workers.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:9e5a^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:528f^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.82.143^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.158.90^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.82.143, 172.67.158.90
		IPv6 hints	2606:4700:3032::ac43:9e5a, 2606:4700:3034::6815:528f
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=247, name=cloudflare-ech.com

`sem6688.workers.dev`

	DNSSEC	⚠️ Not signed
	NS	`hank.ns.cloudflare.com` ⭐
	NS	`naya.ns.cloudflare.com`
	SOA	`hank.ns.cloudflare.com`dns@cloudflare.com serial=2408792867

Same first word

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ucdela.com

DNS History

9 records (4 active, 5 former)

●A104.21.82.1432026-06-23 → 2026-07-16 · 4 obs

● 2026-06-23 12:48:28
○ 2026-07-15 19:11:50
● 2026-07-16 00:16:32
● 2026-07-16 00:16:34

●A172.67.158.902026-06-23 → 2026-07-16 · 4 obs

● 2026-06-23 12:48:28
○ 2026-07-15 19:11:50
● 2026-07-16 00:16:32
● 2026-07-16 00:16:34

○A188.114.96.02026-07-15 → 2026-07-15 · 4 obs

○ 2026-06-29 06:33:42
● 2026-07-15 19:11:50
○ 2026-07-16 00:16:32
○ 2026-07-16 00:16:34

○A188.114.97.02026-07-15 → 2026-07-15 · 4 obs

○ 2026-06-29 06:33:42
● 2026-07-15 19:11:50
○ 2026-07-16 00:16:32
○ 2026-07-16 00:16:34

●A2606:4700:3032::ac43:9e5a2026-06-23 → 2026-07-16 · 4 obs

● 2026-06-23 12:48:28
○ 2026-07-15 19:11:50
● 2026-07-16 00:16:32
● 2026-07-16 00:16:34

●A2606:4700:3034::6815:528f2026-06-29 → 2026-07-16 · 5 obs

○ 2026-06-23 12:48:28
● 2026-06-29 06:33:42
○ 2026-07-15 19:11:50
● 2026-07-16 00:16:32
● 2026-07-16 00:16:34

○A2606:4700:3036::6815:528f2026-06-23 → 2026-06-23 · 3 obs

● 2026-06-23 12:48:28
○ 2026-06-29 06:33:42
○ 2026-07-16 00:16:34

○A2a06:98c1:3120::2026-07-15 → 2026-07-15 · 4 obs

○ 2026-06-29 06:33:42
● 2026-07-15 19:11:50
○ 2026-07-16 00:16:32
○ 2026-07-16 00:16:34

○A2a06:98c1:3121::2026-07-15 → 2026-07-15 · 4 obs

○ 2026-06-29 06:33:42
● 2026-07-15 19:11:50
○ 2026-07-16 00:16:32
○ 2026-07-16 00:16:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
workers.dev	clyde.ns.cloudflare.com, sofia.ns.cloudflare.com	-
sem6688.workers.dev	hank.ns.cloudflare.com, naya.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.38.242

NS records: hank.ns.cloudflare.com, naya.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for workers.dev (unsigned zone)

⏱️ Timing

Total: 1322ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.82.143, 172.67.158.90`
AAAA	2	`2606:4700:3032::ac43:9e5a, 2606:4700:3034::6815:528f`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

Analysis

IP Addresses

claude.sem6688.workers.dev points to the four IP addresses 104.21.82.143, 172.67.158.90, 2606:4700:3032::ac43:9e5a and 2606:4700:3034::6815:528f.

Two other host names, along with vanmelickculinair.nl, draperlegal.com and ahzajc.com, also share IP numbers with claude.sem6688.workers.dev.

claude.sem6688.workers.dev - robtex.com