simple.instructure.workers.dev - robtex.com
simple.instructure.workers.dev
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::ac43:b2bf🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::6815:4ba5🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.75.165Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.178.191🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.75.165, 172.67.178.191 | ||||||
| IPv6 hints | 2606:4700:3031::ac43:b2bf, 2606:4700:3035::6815:4ba5 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=72, name=cloudflare-ech.com | ||||||
instructure.workers.dev
| DNSSEC | ⚠️ Not signed | ||||||
| NS | louis.ns.cloudflare.com ⭐ | ||||||
| NS | zariyah.ns.cloudflare.com | ||||||
| SOA | louis.ns.cloudflare.comdns@cloudflare.com serial=2399547337 | ||||||
Same first word
Similar names
DNS History
6 records (4 active, 2 former)
●A104.21.75.1652026-02-24 → 2026-05-13 · 2 obs
● 2026-02-24 07:49:02
● 2026-05-13 08:16:20
● 2026-05-13 08:16:20
○A172.64.80.12026-02-24 → 2026-05-13 · 2 obs
○ 2026-02-24 07:49:02
○ 2026-05-13 08:16:20
○ 2026-05-13 08:16:20
●A172.67.178.1912026-02-24 → 2026-05-13 · 2 obs
● 2026-02-24 07:49:02
● 2026-05-13 08:16:20
● 2026-05-13 08:16:20
○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-16 → 2026-03-16 · 4 obs
○ 2026-02-24 07:49:02
● 2026-03-16 16:49:24
○ 2026-04-10 18:30:40
○ 2026-05-13 08:16:20
● 2026-03-16 16:49:24
○ 2026-04-10 18:30:40
○ 2026-05-13 08:16:20
●A2606:4700:3031::ac43:b2bf2026-02-24 → 2026-05-13 · 4 obs
● 2026-02-24 07:49:02
○ 2026-03-16 16:49:24
● 2026-04-10 18:30:40
● 2026-05-13 08:16:20
○ 2026-03-16 16:49:24
● 2026-04-10 18:30:40
● 2026-05-13 08:16:20
●A2606:4700:3035::6815:4ba52026-02-24 → 2026-05-13 · 4 obs
● 2026-02-24 07:49:02
○ 2026-03-16 16:49:24
● 2026-04-10 18:30:40
● 2026-05-13 08:16:20
○ 2026-03-16 16:49:24
● 2026-04-10 18:30:40
● 2026-05-13 08:16:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| workers.dev | sofia.ns.cloudflare.com, clyde.ns.cloudflare.com | - |
| instructure.workers.dev | louis.ns.cloudflare.com, zariyah.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.194.72
NS records: louis.ns.cloudflare.com, zariyah.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for workers.dev (unsigned zone)
⏱️ Timing
Total: 2601ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.75.165, 172.67.178.191 |
| AAAA | 2 | 2606:4700:3035::6815:4ba5, 2606:4700:3031::ac43:b2bf |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
Analysis
IP Addresses
Four IP numbers are pointed to by simple.instructure.workers.dev: 2606:4700:3031::ac43:b2bf, 2606:4700:3035::6815:4ba5, 104.21.75.165 and 172.67.178.191.
other host names including guanggunla.com, eastcoastcarportsnc.com, www.istpack.com, neuralnextad-visory.forum and cabrinihs.com share IP numbers with simple.instructure.workers.dev.