🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`1stack.app`

DNSSEC	⚠️ Not signed
A	2606:4700:3037::6815:1f35^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:aefe^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.31.53^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.174.254^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`felicity.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cd4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felicity.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3d4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`felicity.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23d4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`felicity.ns.cloudflare.com`
		A	108.162.195.212^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felicity.ns.cloudflare.com`
		A	162.159.44.212^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felicity.ns.cloudflare.com`
		A	172.64.35.212^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felicity.ns.cloudflare.com`
NS	`ziggy.ns.cloudflare.com`
		A	2606:4700:50::a29f:26ed^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ziggy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2ed^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ziggy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22ed^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ziggy.ns.cloudflare.com`
		A	108.162.194.237^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ziggy.ns.cloudflare.com`
		A	162.159.38.237^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ziggy.ns.cloudflare.com`
		A	172.64.34.237^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ziggy.ns.cloudflare.com`
MX	`route2.mx.cloudflare.net` ⭐
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
MX	`route1.mx.cloudflare.net`⁽²⁶⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route3.mx.cloudflare.net`⁽⁵⁵⁾
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
TXT	`brevo-code:9d4e8c6476cf85edb2ea58bf1b124147`
TXT	`google-site-verification=euAuv--Q8rdEBQv8qcGYsrDtzXG8QvQiFxlzK7mLqPY`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.31.53, 172.67.174.254
		IPv6 hints	2606:4700:3037::6815:1f35, 2606:4700:3037::ac43:aefe
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=201, name=cloudflare-ech.com
SOA	`felicity.ns.cloudflare.com`dns@cloudflare.com serial=2414900307

`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

1stack.net

1stack.co

1stack.app

1stack.cn

1stack.ai

1stack.com

Similar names

stack1.top

task1c.ru

stack1.com.br

stack1.xyz

stack1.de

stack1.pages.dev

stack1.dev

stack1.io

Previous names

1slw.app

1sm.app

1sms.app

1soft.app

1sol.app

1solution.app

1space.app

1spoc.app

1sports.app

1spot.app

1spotschools.app

1spur.app

1sr.app

1ss365.app

1sspg.app

1st-dev.app

1st-penguin.app

1st-round.app

1st.app

Next names

DNS History

13 records (9 active, 4 former)

●NSfelicity.ns.cloudflare.com2026-09-11 → 2026-09-17 · 2 obs

● 2026-09-11 20:11:42
● 2026-09-17 19:20:32

●NSziggy.ns.cloudflare.com2026-09-11 → 2026-09-17 · 2 obs

● 2026-09-11 20:11:42
● 2026-09-17 19:20:32

●MXroute1.mx.cloudflare.net2026-09-11 → 2026-09-17 · 2 obs

● 2026-09-11 20:11:42
● 2026-09-17 19:20:32

●MXroute2.mx.cloudflare.net2026-09-11 → 2026-09-17 · 2 obs

● 2026-09-11 20:11:42
● 2026-09-17 19:20:32

●MXroute3.mx.cloudflare.net2026-09-11 → 2026-09-17 · 2 obs

● 2026-09-11 20:11:42
● 2026-09-17 19:20:32

●A104.21.31.532026-09-17 → 2026-09-17 · 3 obs

○ 2026-09-11 20:11:42
● 2026-09-17 19:20:30
● 2026-09-17 19:20:32

●A172.67.174.2542026-09-17 → 2026-09-17 · 3 obs

○ 2026-09-11 20:11:42
● 2026-09-17 19:20:30
● 2026-09-17 19:20:32

○A188.114.96.02026-09-11 → 2026-09-11 · 3 obs

● 2026-09-11 20:11:42
○ 2026-09-17 19:20:30
○ 2026-09-17 19:20:32

○A188.114.97.02026-09-11 → 2026-09-11 · 3 obs

● 2026-09-11 20:11:42
○ 2026-09-17 19:20:30
○ 2026-09-17 19:20:32

●A2606:4700:3037::6815:1f352026-09-17 → 2026-09-17 · 3 obs

○ 2026-09-11 20:11:42
● 2026-09-17 19:20:30
● 2026-09-17 19:20:32

●A2606:4700:3037::ac43:aefe2026-09-17 → 2026-09-17 · 3 obs

○ 2026-09-11 20:11:42
● 2026-09-17 19:20:30
● 2026-09-17 19:20:32

○A2a06:98c1:3120::2026-09-11 → 2026-09-11 · 3 obs

● 2026-09-11 20:11:42
○ 2026-09-17 19:20:30
○ 2026-09-17 19:20:32

○A2a06:98c1:3121::2026-09-11 → 2026-09-11 · 3 obs

● 2026-09-11 20:11:42
○ 2026-09-17 19:20:30
○ 2026-09-17 19:20:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	10 records
1stack.app	felicity.ns.cloudflare.com, ziggy.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.212

NS records: felicity.ns.cloudflare.com, ziggy.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 1stack.app (unsigned zone)

⏱️ Timing

Total: 1489ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.31.53, 172.67.174.254`
AAAA	2	`2606:4700:3037::6815:1f35, 2606:4700:3037::ac43:aefe`
NS	2	`felicity.ns.cloudflare.com, ziggy.ns.cloudflare.com`
MX	3	`route2.mx.cloudflare.net (pri: 1), route1.mx.cloudflare.net (pri: 26)...`
TXT	3	`brevo-code:9d4e8c6476cf85edb2ea58bf1b124, google-site-verification=euAuv--Q8rdEBQv...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`felicity.ns.cloudflare.com dns.cloudflar`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)

Analysis

IP Addresses

1stack.app points to the four IP addresses 104.21.31.53, 172.67.174.254, 2606:4700:3037::6815:1f35 and 2606:4700:3037::ac43:aefe.

alanyaescortlari.com, talenorivadi.space, ns1.i3group.com.br and two other host names share IP numbers with 1stack.app.

Name Servers

DNS delegation for 1stack.app points to two name servers: felicity.ns.cloudflare.com and ziggy.ns.cloudflare.com.

1stack.app uses the same name servers as several other domains — among them aasyncstackdev.top, jacksondefirst.com, gdttech.net and two more.

There is at least partial name server overlap between 1stack.app and other domains — toto77hau.com, oaueduife.name.ng, vxwell-dev.pages.dev and two more among them.

The name servers kanye.ns.cloudflare.com, betty.ns.cloudflare.com and drew.ns.cloudflare.com are often found in combination with these name servers.

Hostnames that resolve to 6 IP addresses:

felicity.ns.cloudflare.com has IP addresses 108.162.195.212, 162.159.44.212 and 172.64.35.212, plus 3 other.

ziggy.ns.cloudflare.com has IP addresses 108.162.194.237, 162.159.38.237 and 172.64.34.237, plus 3 other.

Mail Servers

Incoming mail for 1stack.app is delivered via three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

1stack.app has at least partial mail server overlap with other domains such as levainlabs.jp, firstprs.store, sillyfella.com and two more.

Hostnames that resolve to 6 IP addresses:

route1.mx.cloudflare.net has IP addresses 162.159.205.11, 162.159.205.12 and 162.159.205.13, plus 3 other.

route2.mx.cloudflare.net has IP addresses 162.159.205.17, 162.159.205.18 and 162.159.205.19, plus 3 other.

route3.mx.cloudflare.net has IP addresses 162.159.205.23, 162.159.205.24 and 162.159.205.25, plus 3 other.

1stack.app - robtex.com

1stack.app

app

Same first word

Similar names

Previous names

Next names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`1stack.app`

`app`