🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`openai.ipsyer.workers.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:55c8^{Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:d1ed^{Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.85.200^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.209.237^{Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.85.200, 172.67.209.237
		IPv6 hints	2606:4700:3033::6815:55c8, 2606:4700:3036::ac43:d1ed
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=68, name=cloudflare-ech.com

`ipsyer.workers.dev`

	DNSSEC	⚠️ Not signed
	NS	`brett.ns.cloudflare.com` ⭐
	NS	`heather.ns.cloudflare.com`
	SOA	`brett.ns.cloudflare.com`dns@cloudflare.com serial=2413065776

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DNS History

8 records (4 active, 4 former)

●A104.21.85.2002026-08-11 → 2026-10-17 · 6 obs

● 2026-08-11 17:04:14
○ 2026-08-22 13:33:40
● 2026-08-29 18:21:22
○ 2026-09-07 17:03:52
● 2026-09-17 15:19:10
● 2026-10-17 04:16:14

●A172.67.209.2372026-08-11 → 2026-10-17 · 6 obs

● 2026-08-11 17:04:14
○ 2026-08-22 13:33:40
● 2026-08-29 18:21:22
○ 2026-09-07 17:03:52
● 2026-09-17 15:19:10
● 2026-10-17 04:16:14

○A188.114.96.02026-08-22 → 2026-09-07 · 6 obs

○ 2026-08-11 17:04:14
● 2026-08-22 13:33:40
○ 2026-08-29 18:21:22
● 2026-09-07 17:03:52
○ 2026-09-17 15:19:10
○ 2026-10-17 04:16:14

○A188.114.97.02026-08-22 → 2026-09-07 · 6 obs

○ 2026-08-11 17:04:14
● 2026-08-22 13:33:40
○ 2026-08-29 18:21:22
● 2026-09-07 17:03:52
○ 2026-09-17 15:19:10
○ 2026-10-17 04:16:14

●A2606:4700:3033::6815:55c82026-08-11 → 2026-10-17 · 6 obs

● 2026-08-11 17:04:14
○ 2026-08-22 13:33:40
● 2026-08-29 18:21:22
○ 2026-09-07 17:03:52
● 2026-09-17 15:19:10
● 2026-10-17 04:16:14

●A2606:4700:3036::ac43:d1ed2026-08-11 → 2026-10-17 · 6 obs

● 2026-08-11 17:04:14
○ 2026-08-22 13:33:40
● 2026-08-29 18:21:22
○ 2026-09-07 17:03:52
● 2026-09-17 15:19:10
● 2026-10-17 04:16:14

○A2a06:98c1:3120::2026-08-22 → 2026-09-07 · 6 obs

○ 2026-08-11 17:04:14
● 2026-08-22 13:33:40
○ 2026-08-29 18:21:22
● 2026-09-07 17:03:52
○ 2026-09-17 15:19:10
○ 2026-10-17 04:16:14

○A2a06:98c1:3121::2026-08-22 → 2026-09-07 · 6 obs

○ 2026-08-11 17:04:14
● 2026-08-22 13:33:40
○ 2026-08-29 18:21:22
● 2026-09-07 17:03:52
○ 2026-09-17 15:19:10
○ 2026-10-17 04:16:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
workers.dev	clyde.ns.cloudflare.com, sofia.ns.cloudflare.com	-
ipsyer.workers.dev	brett.ns.cloudflare.com, heather.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.161

NS records: brett.ns.cloudflare.com, heather.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for workers.dev (unsigned zone)

⏱️ Timing

Total: 1421ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.209.237, 104.21.85.200`
AAAA	2	`2606:4700:3036::ac43:d1ed, 2606:4700:3033::6815:55c8`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

Analysis

IP Addresses

openai.ipsyer.workers.dev has four IP addresses: 104.21.85.200, 172.67.209.237, 2606:4700:3033::6815:55c8 and 2606:4700:3036::ac43:d1ed.

openai.ipsyer.workers.dev - robtex.com