openai.czfeng-w.workers.dev - robtex.com
openai.czfeng-w.workers.dev
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::ac43:dd08🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3032::6815:18ed🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.24.237Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.221.8🇺🇸 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 | 104.21.24.237, 172.67.221.8 | ||||||
| IPv6 hints | 2606:4700:3031::ac43:dd08, 2606:4700:3032::6815:18ed | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=214, name=cloudflare-ech.com | ||||||
czfeng-w.workers.dev
| DNSSEC | ⚠️ Not signed | ||||||
| NS | alan.ns.cloudflare.com ⭐ | ||||||
| NS | martha.ns.cloudflare.com | ||||||
| SOA | alan.ns.cloudflare.comdns@cloudflare.com serial=2411088746 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●A104.21.24.2372026-06-26 → 2026-08-02 · 2 obs
● 2026-06-26 15:02:10
● 2026-08-02 01:27:58
● 2026-08-02 01:27:58
●A172.67.221.82026-06-26 → 2026-08-02 · 2 obs
● 2026-06-26 15:02:10
● 2026-08-02 01:27:58
● 2026-08-02 01:27:58
●A2606:4700:3031::ac43:dd082026-06-26 → 2026-08-02 · 2 obs
● 2026-06-26 15:02:10
● 2026-08-02 01:27:58
● 2026-08-02 01:27:58
●A2606:4700:3032::6815:18ed2026-06-26 → 2026-08-02 · 2 obs
● 2026-06-26 15:02:10
● 2026-08-02 01:27:58
● 2026-08-02 01:27:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| workers.dev | sofia.ns.cloudflare.com, clyde.ns.cloudflare.com | - |
| czfeng-w.workers.dev | alan.ns.cloudflare.com, martha.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.34.142
NS records: alan.ns.cloudflare.com, martha.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for workers.dev (unsigned zone)
⏱️ Timing
Total: 106ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.221.8, 104.21.24.237 |
| AAAA | 2 | 2606:4700:3032::6815:18ed, 2606:4700:3031::ac43:dd08 |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
Analysis
IP Addresses
openai.czfeng-w.workers.dev directs to four IP numbers, which are 104.21.24.237, 172.67.221.8, 2606:4700:3031::ac43:dd08 and 2606:4700:3032::6815:18ed.
keraspalu4d.it.com, springfieldlakesdental.com.au, karnatakacareers.in plus two other host names have IP numbers in common with openai.czfeng-w.workers.dev.