🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`buildstack.app`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::ac43:b1cc^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:1f95^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.31.149^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.177.204^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`leif.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cde^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leif.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3de^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`leif.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23de^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`leif.ns.cloudflare.com`
		A	108.162.195.222^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leif.ns.cloudflare.com`
		A	162.159.44.222^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leif.ns.cloudflare.com`
		A	172.64.35.222^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leif.ns.cloudflare.com`
NS	`sloan.ns.cloudflare.com`
		A	2606:4700:50::a29f:2634^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sloan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c234^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sloan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2234^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sloan.ns.cloudflare.com`
		A	108.162.194.52^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sloan.ns.cloudflare.com`
		A	162.159.38.52^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sloan.ns.cloudflare.com`
		A	172.64.34.52^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sloan.ns.cloudflare.com`
MX	`mx2.zoho.com` ⭐
		A	204.141.33.44^{🇺🇸 ZohoAS204.141.32.0/23 PNAP-DAL CASE00103239}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx3.zoho.com`⁽²⁰⁾
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx.zoho.com`⁽⁵⁰⁾
		A	136.143.183.44^{🇺🇸 ZohoAS136.143.182.0/23 Zoho}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
TXT	`v=spf1 include:zohomail.com a mx include:websitewelcome.com ~all`
TXT	`zoho-verification=zb29851029.zmverify.zoho.com`
TXT	`zoho-verification=zb79779923.zmverify.zoho.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.31.149, 172.67.177.204
		IPv6 hints	2606:4700:3035::ac43:b1cc, 2606:4700:3037::6815:1f95
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=49, name=cloudflare-ech.com
SOA	`leif.ns.cloudflare.com`dns@cloudflare.com serial=2414001044

`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

Similar names

stackbuild.de

stackbuild.app

stackbuild.dev

stackbuild.co.uk

stackbuild.digital

stackbuild.com

stackbuild.in

stackbuild.xyz

Previous names

Next names

DNS History

13 records (9 active, 4 former)

●NSleif.ns.cloudflare.com2026-09-06 → 2026-09-07 · 2 obs

● 2026-09-06 19:32:34
● 2026-09-07 01:07:30

●NSsloan.ns.cloudflare.com2026-09-06 → 2026-09-07 · 2 obs

● 2026-09-06 19:32:34
● 2026-09-07 01:07:30

●MXmx.zoho.com2026-09-06 → 2026-09-07 · 2 obs

● 2026-09-06 19:32:34
● 2026-09-07 01:07:30

●MXmx2.zoho.com2026-09-06 → 2026-09-07 · 2 obs

● 2026-09-06 19:32:34
● 2026-09-07 01:07:30

●MXmx3.zoho.com2026-09-06 → 2026-09-07 · 2 obs

● 2026-09-06 19:32:34
● 2026-09-07 01:07:30

●A104.21.31.1492026-09-07 → 2026-09-07 · 3 obs

○ 2026-09-06 19:32:34
● 2026-09-07 01:07:28
● 2026-09-07 01:07:30

●A172.67.177.2042026-09-07 → 2026-09-07 · 3 obs

○ 2026-09-06 19:32:34
● 2026-09-07 01:07:28
● 2026-09-07 01:07:30

○A188.114.96.02026-09-06 → 2026-09-06 · 3 obs

● 2026-09-06 19:32:34
○ 2026-09-07 01:07:28
○ 2026-09-07 01:07:30

○A188.114.97.02026-09-06 → 2026-09-06 · 3 obs

● 2026-09-06 19:32:34
○ 2026-09-07 01:07:28
○ 2026-09-07 01:07:30

●A2606:4700:3035::ac43:b1cc2026-09-07 → 2026-09-07 · 3 obs

○ 2026-09-06 19:32:34
● 2026-09-07 01:07:28
● 2026-09-07 01:07:30

●A2606:4700:3037::6815:1f952026-09-07 → 2026-09-07 · 3 obs

○ 2026-09-06 19:32:34
● 2026-09-07 01:07:28
● 2026-09-07 01:07:30

○A2a06:98c1:3120::2026-09-06 → 2026-09-06 · 3 obs

● 2026-09-06 19:32:34
○ 2026-09-07 01:07:28
○ 2026-09-07 01:07:30

○A2a06:98c1:3121::2026-09-06 → 2026-09-06 · 3 obs

● 2026-09-06 19:32:34
○ 2026-09-07 01:07:28
○ 2026-09-07 01:07:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...	-
buildstack.app	leif.ns.cloudflare.com, sloan.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.34.52

NS records: leif.ns.cloudflare.com, sloan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for buildstack.app (unsigned zone)

⏱️ Timing

Total: 871ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.31.149, 172.67.177.204`
AAAA	2	`2606:4700:3037::6815:1f95, 2606:4700:3035::ac43:b1cc`
NS	2	`leif.ns.cloudflare.com, sloan.ns.cloudflare.com`
MX	3	`mx.zoho.com (pri: 10), mx2.zoho.com (pri: 20)...`
TXT	3	`v=spf1 include:zohomail.com a mx include, zoho-verification=zb29851029.zmverify.zo...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`leif.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

buildstack.app resolves to four IP addresses: 104.21.31.149, 172.67.177.204, 2606:4700:3035::ac43:b1cc and 2606:4700:3037::6815:1f95.

rimkusbase.com, templatemonkey.com, pizario.de plus two other host names have IP numbers in common with buildstack.app.

Name Servers

The NS records for buildstack.app delegate to leif.ns.cloudflare.com and sloan.ns.cloudflare.com.

The name server configuration of buildstack.app is shared with other domains, for instance fbi-government.workers.dev, whoishbs.com, garamnarae.pages.dev and two others.

buildstack.app has at least partial name server overlap with other domains, such as 122856.xyz, fetch-kv.pages.dev, cochrunmedia.com and two others.

These name servers tend to appear together with the name servers trey.ns.cloudflare.com, decker.ns.cloudflare.com and kanye.ns.cloudflare.com.

Hosts with 6 IP addresses each:

leif.ns.cloudflare.com maps to 108.162.195.222, 162.159.44.222, 172.64.35.222 and 3 additional IP addresses.

sloan.ns.cloudflare.com maps to 108.162.194.52, 162.159.38.52, 172.64.34.52 and 3 additional IP addresses.

Mail Servers

buildstack.app has three mail servers: mx2.zoho.com, mx3.zoho.com and mx.zoho.com.

At least some of the mail servers used by buildstack.app are shared with other domains: 6thcross.com, aurivspe.com, stapans.com and two others among them.

Host names pointing to two IP addresses:

The A records for mx2.zoho.com return 204.141.33.44 and 204.141.43.44.

The A records for mx.zoho.com return 136.143.183.44 and 204.141.43.44.

Host names resolving to a single IP address:

mx3.zoho.com resolves to the IP address 204.141.43.44.

Three host names point to 204.141.43.44: mx2.zoho.com, mx.zoho.com and mx3.zoho.com.

buildstack.app - robtex.com

buildstack.app

app

Same first word

Similar names

Previous names

Next names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`buildstack.app`

`app`