contextdev.app - robtex.com
contextdev.app
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::ac43:9fb9🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3031::6815:95b🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.9.91Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.159.185🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | alexandra.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:261e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | alexandra.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c21e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | alexandra.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:221e🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | alexandra.ns.cloudflare.com | ||||||
| A | 108.162.194.30🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | alexandra.ns.cloudflare.com | ||||||
| A | 162.159.38.30Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | alexandra.ns.cloudflare.com | ||||||
| A | 172.64.34.30🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | alexandra.ns.cloudflare.com | ||||||
| NS | syeef.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2cee🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | syeef.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c3ee🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | syeef.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:23ee🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | syeef.ns.cloudflare.com | ||||||
| A | 108.162.195.238🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | syeef.ns.cloudflare.com | ||||||
| A | 162.159.44.238Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | syeef.ns.cloudflare.com | ||||||
| A | 172.64.35.238🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | syeef.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.9.91, 172.67.159.185 | ||||||
| IPv6 hints | 2606:4700:3030::ac43:9fb9, 2606:4700:3031::6815:95b | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=18, name=cloudflare-ech.com | ||||||
| SOA | alexandra.ns.cloudflare.comdns@cloudflare.com serial=2410273359 | ||||||
app
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns-tld1.charlestonroadregistry.com ⭐ | ||||||
| NS | ns-tld2.charlestonroadregistry.com | ||||||
| NS | ns-tld3.charlestonroadregistry.com | ||||||
| NS | ns-tld4.charlestonroadregistry.com | ||||||
| NS | ns-tld5.charlestonroadregistry.com | ||||||
| SOA | ns-tld1.charlestonroadregistry.comcloud-dns-hostmaster@google.com serial=101427 | ||||||
Same first word
contextdev.app |
DNS History
6 records (6 active, 0 former)
●NSalexandra.ns.cloudflare.com2026-07-13 → 2026-08-06 · 2 obs
● 2026-08-06 07:13:24
●NSsyeef.ns.cloudflare.com2026-07-13 → 2026-08-06 · 2 obs
● 2026-08-06 07:13:24
●A104.21.9.912026-07-13 → 2026-08-06 · 2 obs
● 2026-08-06 07:13:24
●A172.67.159.1852026-07-13 → 2026-08-06 · 2 obs
● 2026-08-06 07:13:24
●A2606:4700:3030::ac43:9fb92026-07-13 → 2026-08-06 · 2 obs
● 2026-08-06 07:13:24
●A2606:4700:3031::6815:95b2026-07-13 → 2026-08-06 · 2 obs
● 2026-08-06 07:13:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| app | ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com... | - |
| contextdev.app | syeef.ns.cloudflare.com, alexandra.ns.cloudflare.com | - |
✅ Authoritative Response
Server:162.159.44.238
NS records: syeef.ns.cloudflare.com, alexandra.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for contextdev.app (unsigned zone)
⏱️ Timing
Total: 503ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.9.91, 172.67.159.185 |
| AAAA | 2 | 2606:4700:3030::ac43:9fb9, 2606:4700:3031::6815:95b |
| NS | 2 | alexandra.ns.cloudflare.com, syeef.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | alexandra.ns.cloudflare.com dns.cloudfla |
Analysis
IP Addresses
contextdev.app points to the four IP addresses 104.21.9.91, 172.67.159.185, 2606:4700:3030::ac43:9fb9 and 2606:4700:3031::6815:95b.
Two other host names, along with my-space.us, ost.agency and arrematante.aplleiloes.com.br, also share IP numbers with contextdev.app.
Name Servers
contextdev.app uses two name servers for its delegation: alexandra.ns.cloudflare.com and syeef.ns.cloudflare.com.
contextdev.app shares its NS records with other domains, for example hakanak.com, grange-calendars.com, grangecommunications.com and two others.
The name servers of contextdev.app overlap at least partially with those of other domains — among them fondibesa.com, xhwu.cn, shoping12889.com and two more.
These name servers commonly appear alongside the name servers ada.ns.cloudflare.com and mitchell.ns.cloudflare.com.
DNS names with 6 IP addresses:
Hostname alexandra.ns.cloudflare.com directs to 108.162.194.30, 162.159.38.30 and 172.64.34.30 along with 3 other IP addresses.
Hostname syeef.ns.cloudflare.com directs to 108.162.195.238, 162.159.44.238 and 172.64.35.238 along with 3 other IP addresses.