classstack.app - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`classstack.app`

DNSSEC	⚠️ Not signed
NS	`buck.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b4e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`buck.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c14e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`buck.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:214e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`buck.ns.cloudflare.com`
		A	108.162.193.78^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`buck.ns.cloudflare.com`
		A	172.64.33.78^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`buck.ns.cloudflare.com`
		A	173.245.59.78^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`buck.ns.cloudflare.com`
NS	`robin.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ada^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`robin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0da^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`robin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20da^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`robin.ns.cloudflare.com`
		A	108.162.192.218^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`robin.ns.cloudflare.com`
		A	172.64.32.218^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`robin.ns.cloudflare.com`
		A	173.245.58.218^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`robin.ns.cloudflare.com`
SOA	`buck.ns.cloudflare.com`dns@cloudflare.com serial=2411633856

`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.com`cloud-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

Next names

DNS History

2 records (2 active, 0 former)

●NSbuck.ns.cloudflare.com2026-08-19 → 2026-09-09 · 2 obs

● 2026-08-19 12:13:00
● 2026-09-09 02:45:24

●NSrobin.ns.cloudflare.com2026-08-19 → 2026-09-09 · 2 obs

● 2026-08-19 12:13:00
● 2026-09-09 02:45:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com...	-
classstack.app	buck.ns.cloudflare.com, robin.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.218

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classstack.app (unsigned zone)

⏱️ Timing

Total: 754ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`buck.ns.cloudflare.com, robin.ns.cloudflare.com`
SOA	1	`buck.ns.cloudflare.com dns.cloudflare.co`

Analysis

Name Servers

classstack.app has two authoritative name servers — buck.ns.cloudflare.com and robin.ns.cloudflare.com.

classstack.app has the same name server delegation as a number of other domains, such as classical-nyc-preview.pages.dev, publishersdeperformance.com.br, glencook.workers.dev and two more.

classstack.app shares at least some of its name servers with other domains, including bfpadv.com.br, peterjeffery.co.uk, fujipad.vip and two others.

These name servers are frequently seen alongside the name servers syeef.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

buck.ns.cloudflare.com points to 108.162.193.78, 172.64.33.78, 173.245.59.78 and 3 other IP addresses.

robin.ns.cloudflare.com points to 108.162.192.218, 172.64.32.218, 173.245.58.218 and 3 other IP addresses.