`openai.cplab.workers.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:adae^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:5025^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.80.37^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.173.174^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.80.37, 172.67.173.174
		IPv6 hints	2606:4700:3031::ac43:adae, 2606:4700:3036::6815:5025
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=97, name=cloudflare-ech.com

`cplab.workers.dev`

	DNSSEC	⚠️ Not signed
	NS	`adrian.ns.cloudflare.com` ⭐
	NS	`lynn.ns.cloudflare.com`
	SOA	`adrian.ns.cloudflare.com`dns@cloudflare.com serial=2410892743

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DNS History

6 records (4 active, 2 former)

●A104.21.80.372026-06-26 → 2026-07-31 · 2 obs

● 2026-06-26 15:02:14
● 2026-07-31 21:56:42

●A172.67.173.1742026-06-26 → 2026-07-31 · 2 obs

● 2026-06-26 15:02:14
● 2026-07-31 21:56:42

○A2606:4700:3031::6815:50252026-06-26 → 2026-06-26 · 3 obs

● 2026-06-26 15:02:14
○ 2026-07-10 14:20:50
○ 2026-07-31 21:56:42

●A2606:4700:3031::ac43:adae2026-07-10 → 2026-07-31 · 3 obs

○ 2026-06-26 15:02:14
● 2026-07-10 14:20:50
● 2026-07-31 21:56:42

○A2606:4700:3032::ac43:adae2026-06-26 → 2026-06-26 · 3 obs

● 2026-06-26 15:02:14
○ 2026-07-10 14:20:50
○ 2026-07-31 21:56:42

●A2606:4700:3036::6815:50252026-07-10 → 2026-07-31 · 3 obs

○ 2026-06-26 15:02:14
● 2026-07-10 14:20:50
● 2026-07-31 21:56:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
workers.dev	sofia.ns.cloudflare.com, clyde.ns.cloudflare.com	-
cplab.workers.dev	adrian.ns.cloudflare.com, lynn.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.57

NS records: adrian.ns.cloudflare.com, lynn.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for workers.dev (unsigned zone)

⏱️ Timing

Total: 582ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.173.174, 104.21.80.37`
AAAA	2	`2606:4700:3031::ac43:adae, 2606:4700:3036::6815:5025`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

Analysis

IP Addresses

openai.cplab.workers.dev points to the four IP addresses 104.21.80.37, 172.67.173.174, 2606:4700:3031::ac43:adae and 2606:4700:3036::6815:5025.

Additional host names — amb168b.com, quinielasenvivo.es, mammillacloud.digital and two others — share IP numbers with openai.cplab.workers.dev.

openai.cplab.workers.dev - robtex.com