openai.teacher7738.workers.dev - robtex.com
openai.teacher7738.workers.dev
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3032::6815:552d🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3032::ac43:ca49🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.85.45Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.202.73🇺🇸 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 | 104.21.85.45, 172.67.202.73 | ||||||
| IPv6 hints | 2606:4700:3032::6815:552d, 2606:4700:3032::ac43:ca49 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=31, name=cloudflare-ech.com | ||||||
teacher7738.workers.dev
| DNSSEC | ⚠️ Not signed | ||||||
| NS | eva.ns.cloudflare.com ⭐ | ||||||
| NS | seth.ns.cloudflare.com | ||||||
| SOA | eva.ns.cloudflare.comdns@cloudflare.com serial=2408460510 | ||||||
Same first word
Similar names
DNS History
5 records (4 active, 1 former)
●A104.21.85.452026-06-27 → 2026-08-07 · 2 obs
● 2026-06-27 16:02:10
● 2026-08-07 18:16:02
● 2026-08-07 18:16:02
●A172.67.202.732026-06-27 → 2026-08-07 · 2 obs
● 2026-06-27 16:02:10
● 2026-08-07 18:16:02
● 2026-08-07 18:16:02
●A2606:4700:3032::6815:552d2026-06-27 → 2026-08-07 · 2 obs
● 2026-06-27 16:02:10
● 2026-08-07 18:16:02
● 2026-08-07 18:16:02
●A2606:4700:3032::ac43:ca492026-07-12 → 2026-08-07 · 3 obs
○ 2026-06-27 16:02:10
● 2026-07-12 23:05:06
● 2026-08-07 18:16:02
● 2026-07-12 23:05:06
● 2026-08-07 18:16:02
○A2606:4700:3037::ac43:ca492026-06-27 → 2026-06-27 · 3 obs
● 2026-06-27 16:02:10
○ 2026-07-12 23:05:06
○ 2026-08-07 18:16:02
○ 2026-07-12 23:05:06
○ 2026-08-07 18:16:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| workers.dev | sofia.ns.cloudflare.com, clyde.ns.cloudflare.com | - |
| teacher7738.workers.dev | eva.ns.cloudflare.com, seth.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.192.114
NS records: eva.ns.cloudflare.com, seth.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for workers.dev (unsigned zone)
⏱️ Timing
Total: 252ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.85.45, 172.67.202.73 |
| AAAA | 2 | 2606:4700:3032::ac43:ca49, 2606:4700:3032::6815:552d |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
Analysis
IP Addresses
openai.teacher7738.workers.dev resolves to four IP addresses: 104.21.85.45, 172.67.202.73, 2606:4700:3032::6815:552d and 2606:4700:3032::ac43:ca49.
Among the host names that share IP numbers with openai.teacher7738.workers.dev are algarve2020.eu, we912.com, mx.isleofwightarts.com and two others.