classstack.app - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

classstack.app

DNSSEC⚠️ Not signed
NSbuck.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b4e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbuck.ns.cloudflare.com
A2803:f800:50::6ca2:c14e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRbuck.ns.cloudflare.com
A2a06:98c1:50::ac40:214e🇺🇸 Cloudflare2a06:98c1:50::/45
PTRbuck.ns.cloudflare.com
A108.162.193.78🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbuck.ns.cloudflare.com
A172.64.33.78🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbuck.ns.cloudflare.com
A173.245.59.78🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbuck.ns.cloudflare.com
NSrobin.ns.cloudflare.com
A2606:4700:50::adf5:3ada🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrobin.ns.cloudflare.com
A2803:f800:50::6ca2:c0da🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRrobin.ns.cloudflare.com
A2a06:98c1:50::ac40:20da🇺🇸 Cloudflare2a06:98c1:50::/45
PTRrobin.ns.cloudflare.com
A108.162.192.218🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrobin.ns.cloudflare.com
A172.64.32.218🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrobin.ns.cloudflare.com
A173.245.58.218🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrobin.ns.cloudflare.com
SOAbuck.ns.cloudflare.comdns@cloudflare.com serial=2411633856

app

DNSSEC🔒 Signed (DS record present)
NSns-tld1.charlestonroadregistry.com ⭐
NSns-tld2.charlestonroadregistry.com
NSns-tld3.charlestonroadregistry.com
NSns-tld4.charlestonroadregistry.com
NSns-tld5.charlestonroadregistry.com
SOAns-tld1.charlestonroadregistry.comcloud-dns-hostmaster@google.com serial=101427
🔒 HSTS Preload (+subdomains)

Same first word

classstack.in
classstack.co
classstack.org
classstack.app

Similar names

stackclass.ai
classtacks.workers.dev
stackclass.dev
stackclass.live
stackclass.net
stackclass.academy

Previous names

classroom-nexus.app
classroom6x.app
classroom76.app
classroomaide.app
classroomcc.app
classroomclarity.app
classroomcompass.app
classroomconnect.app
classroomgames.app
classroomgrowthcoach.app
classroomhub.app
classroomlens.app
classroomsolution.app
classroots.app
classrpg.app
classrunner.app
classschedules.app
classseating.app
classseats.app
classsify.app

Next names

classstride.app
classsub.app
classswap.app
classtally.app
classtask.app
classteacher.app
classtimer.app
classtools.app
classtopia.app
classtracker.app
classtrackr.app
classtrip.app
classtutors.app
classup.app
classurban.app
classvault.app
classvia.app
classview.app
classvista.app
classvoice.app

DNS History

2 records (2 active, 0 former)

NSbuck.ns.cloudflare.comrobin.ns.cloudflare.com
●NSbuck.ns.cloudflare.com2026-08-19 → 2026-09-16 · 2 obs
● 2026-08-19 12:13:00
● 2026-09-16 15:41:22
●NSrobin.ns.cloudflare.com2026-08-19 → 2026-09-16 · 2 obs
● 2026-08-19 12:13:00
● 2026-09-16 15:41:22

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
appns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com...10 records
classstack.approbin.ns.cloudflare.com, buck.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.58.218

NS records: robin.ns.cloudflare.com, buck.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classstack.app (unsigned zone)

⏱️ Timing

Total: 654ms | Queries: -

📄 Records

TypeCountSample Data
NS2buck.ns.cloudflare.com, robin.ns.cloudflare.com
SOA1buck.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld5.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)

Analysis

Name Servers

DNS delegation for classstack.app points to two name servers: buck.ns.cloudflare.com and robin.ns.cloudflare.com.

classstack.app uses the same name servers as several other domains — among them classical-nyc-preview.pages.dev, publishersdeperformance.com.br, glencook.workers.dev and two more.

classstack.app partially shares its NS delegation with several other domains, including bfpadv.com.br, peterjeffery.co.uk, fujipad.vip and two others.

These name servers are regularly seen alongside syeef.ns.cloudflare.com and melina.ns.cloudflare.com as name servers.

Hostnames that resolve to 6 IP addresses:

buck.ns.cloudflare.com has IP addresses 108.162.193.78, 172.64.33.78 and 173.245.59.78, plus 3 other.

robin.ns.cloudflare.com has IP addresses 108.162.192.218, 172.64.32.218 and 173.245.58.218, plus 3 other.