🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`stackblocks.app`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:2a41^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:cae2^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.42.65^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.202.226^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cloe.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a56^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cloe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c056^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cloe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2056^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cloe.ns.cloudflare.com`
		A	108.162.192.86^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cloe.ns.cloudflare.com`
		A	172.64.32.86^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cloe.ns.cloudflare.com`
		A	173.245.58.86^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cloe.ns.cloudflare.com`
NS	`cody.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b6b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cody.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c16b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cody.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:216b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cody.ns.cloudflare.com`
		A	108.162.193.107^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cody.ns.cloudflare.com`
		A	172.64.33.107^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cody.ns.cloudflare.com`
		A	173.245.59.107^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cody.ns.cloudflare.com`
MX	`in1-smtp.messagingengine.com` ⭐
		A	103.168.172.216^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-01.messagingengine.com`
		A	103.168.172.217^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-02.messagingengine.com`
		A	103.168.172.218^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-03.messagingengine.com`
		A	103.168.172.219^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-04.messagingengine.com`
		A	103.168.172.220^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-05.messagingengine.com`
		A	103.168.172.221^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-06.messagingengine.com`
		A	103.168.172.222^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-07.messagingengine.com`
		A	103.168.172.223^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-08.messagingengine.com`
MX	`in2-smtp.messagingengine.com`⁽²⁰⁾
		A	202.12.124.216^{TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-01.messagingengine.com`
		A	202.12.124.217^{TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-02.messagingengine.com`
		A	202.12.124.218^{TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-03.messagingengine.com`
		A	202.12.124.219^{TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-04.messagingengine.com`
TXT	`google-site-verification=hbE2IkjL8vhXb9PrRGooE_61_No2bQs4w-6awxMliqA`
TXT	`v=spf1 include:spf.messagingengine.com ?all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.42.65, 172.67.202.226
		IPv6 hints	2606:4700:3035::6815:2a41, 2606:4700:3035::ac43:cae2
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=81, name=cloudflare-ech.com
SOA	`cloe.ns.cloudflare.com`dns@cloudflare.com serial=2411600902

`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

stackblocks.app

stackblocks.org

stackblocks.com

Similar names

blockstacks.xyz

blackstocks.co.uk

blackstocks.ca

blockstacks.com

blackstocks.ai

blocksstack.co

blackstocks.com

Previous names

Next names

DNS History

8 records (8 active, 0 former)

●NScloe.ns.cloudflare.com2026-09-01 → 2026-09-02 · 2 obs

● 2026-09-01 01:45:00
● 2026-09-02 01:51:52

●NScody.ns.cloudflare.com2026-09-01 → 2026-09-02 · 2 obs

● 2026-09-01 01:45:00
● 2026-09-02 01:51:52

●MXin1-smtp.messagingengine.com2026-09-01 → 2026-09-02 · 2 obs

● 2026-09-01 01:45:00
● 2026-09-02 01:51:52

●MXin2-smtp.messagingengine.com2026-09-01 → 2026-09-02 · 2 obs

● 2026-09-01 01:45:00
● 2026-09-02 01:51:52

●A104.21.42.652026-09-01 → 2026-09-02 · 2 obs

● 2026-09-01 01:45:00
● 2026-09-02 01:51:52

●A172.67.202.2262026-09-01 → 2026-09-02 · 2 obs

● 2026-09-01 01:45:00
● 2026-09-02 01:51:52

●A2606:4700:3035::6815:2a412026-09-01 → 2026-09-02 · 2 obs

● 2026-09-01 01:45:00
● 2026-09-02 01:51:52

●A2606:4700:3035::ac43:cae22026-09-01 → 2026-09-02 · 2 obs

● 2026-09-01 01:45:00
● 2026-09-02 01:51:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
stackblocks.app	cody.ns.cloudflare.com, cloe.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.107

NS records: cody.ns.cloudflare.com, cloe.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stackblocks.app (unsigned zone)

⏱️ Timing

Total: 846ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.42.65, 172.67.202.226`
AAAA	2	`2606:4700:3035::ac43:cae2, 2606:4700:3035::6815:2a41`
NS	2	`cloe.ns.cloudflare.com, cody.ns.cloudflare.com`
MX	2	`in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20)`
TXT	2	`google-site-verification=hbE2IkjL8vhXb9P, v=spf1 include:spf.messagingengine.com ?`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cloe.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

stackblocks.app points to the four IP addresses 104.21.42.65, 172.67.202.226, 2606:4700:3035::6815:2a41 and 2606:4700:3035::ac43:cae2.

Additional host names — homezenproducts.com, fabindiaplano.com, www.chairworld.pt.cdn.cloudflare.net and two others — share IP numbers with stackblocks.app.

Name Servers

stackblocks.app has two authoritative name servers — cloe.ns.cloudflare.com and cody.ns.cloudflare.com.

stackblocks.app shares its name server setup with other domains, including yjrt0zlvg0.pages.dev, f12chv3z.pages.dev, limited-61-bid-transaction-sharon-champion.pages.dev and two others.

The name servers of stackblocks.app overlap at least partially with those of other domains — among them ipahub.com, lpnuponorogo.com, fulkersonfamily.com and two more.

These name servers commonly appear alongside the name servers shaz.ns.cloudflare.com and norman.ns.cloudflare.com.

Host names with 6 IP numbers:

cloe.ns.cloudflare.com points to 108.162.192.86, 172.64.32.86, 173.245.58.86 and 3 other IP addresses.

cody.ns.cloudflare.com points to 108.162.193.107, 172.64.33.107, 173.245.59.107 and 3 other IP addresses.

Mail Servers

stackblocks.app has two mail servers: in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

stackblocks.app shares the same mail server setup as other domains, including petriscorp.com, ebuntor.com, racketpoint.co.uk and two others.

stackblocks.app has mail servers in common with other domains — jianianhua.com being one example.

Host names with 8 IP numbers:

in1-smtp.messagingengine.com points to 103.168.172.216, 103.168.172.217, 103.168.172.218 and 5 other IP addresses.

Host names resolving to four IP addresses:

in2-smtp.messagingengine.com resolves to 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.

stackblocks.app - robtex.com

stackblocks.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

`stackblocks.app`

`app`