studydeck.app - robtex.com
studydeck.app
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3034::ac43:da27🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::6815:1860🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.24.96Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.218.39🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | greg.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3b73🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | greg.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c173🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | greg.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2173🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | greg.ns.cloudflare.com | ||||||
| A | 108.162.193.115🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | greg.ns.cloudflare.com | ||||||
| A | 172.64.33.115🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | greg.ns.cloudflare.com | ||||||
| A | 173.245.59.115🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | greg.ns.cloudflare.com | ||||||
| NS | iris.ns.cloudflare.com | ||||||
| A | 2606:4700:50::adf5:3a76🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | iris.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c076🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | iris.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2076🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | iris.ns.cloudflare.com | ||||||
| A | 108.162.192.118🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | iris.ns.cloudflare.com | ||||||
| A | 172.64.32.118🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | iris.ns.cloudflare.com | ||||||
| A | 173.245.58.118🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | iris.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.24.96, 172.67.218.39 | ||||||
| IPv6 hints | 2606:4700:3034::ac43:da27, 2606:4700:3035::6815:1860 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=34, name=cloudflare-ech.com | ||||||
| SOA | greg.ns.cloudflare.comdns@cloudflare.com serial=2418221465 | ||||||
app
| DNSSEC | ⚠️ Not signed | ||||||
| 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
Similar names
Previous names
Next names
DNS History
6 records (6 active, 0 former)
●NSgreg.ns.cloudflare.com2026-10-23 → 2026-10-29 · 2 obs
● 2026-10-29 17:19:10
●NSiris.ns.cloudflare.com2026-10-23 → 2026-10-29 · 2 obs
● 2026-10-29 17:19:10
●A104.21.24.962026-10-23 → 2026-10-29 · 2 obs
● 2026-10-29 17:19:10
●A172.67.218.392026-10-23 → 2026-10-29 · 2 obs
● 2026-10-29 17:19:10
●A2606:4700:3034::ac43:da272026-10-23 → 2026-10-29 · 2 obs
● 2026-10-29 17:19:10
●A2606:4700:3035::6815:18602026-10-23 → 2026-10-29 · 2 obs
● 2026-10-29 17:19:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| app | ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com... | 10 records |
| studydeck.app | greg.ns.cloudflare.com, iris.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.32.118
NS records: greg.ns.cloudflare.com, iris.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for studydeck.app (unsigned zone)
⏱️ Timing
Total: 1024ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.24.96, 172.67.218.39 |
| AAAA | 2 | 2606:4700:3034::ac43:da27, 2606:4700:3035::6815:1860 |
| NS | 2 | greg.ns.cloudflare.com, iris.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | greg.ns.cloudflare.com dns.cloudflare.co |
📌 Glue Records Collected
Total: 10
Out-of-bailiwick: 10 (ns-tld2.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...)
Analysis
IP Addresses
studydeck.app points to the four IP addresses 104.21.24.96, 172.67.218.39, 2606:4700:3034::ac43:da27 and 2606:4700:3035::6815:1860.
geoffreywalkerandassociates.com.au, jnlingfan.com, showle.eu.org plus two other host names have IP numbers in common with studydeck.app.
Name Servers
studydeck.app has two authoritative name servers — greg.ns.cloudflare.com and iris.ns.cloudflare.com.
The name server configuration of studydeck.app is shared with other domains, for instance sanabot.win, cvpay-membership-demo-admin.pages.dev, yogaforny.org and two others.
There is at least partial name server overlap between studydeck.app and other domains — 1188.pp.ua, cixiv70259-22678-1-czw.pages.dev, offerline.ai and two more among them.
These name servers frequently co-occur with the name servers pablo.ns.cloudflare.com and adaline.ns.cloudflare.com.
Hosts with 6 IP addresses each:
greg.ns.cloudflare.com points to 108.162.193.115, 172.64.33.115, 173.245.59.115 and 3 other IP addresses.
iris.ns.cloudflare.com points to 108.162.192.118, 172.64.32.118, 173.245.58.118 and 3 other IP addresses.