🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`stack-optimizer.com`

DNSSEC	⚠️ Not signed
A	76.76.21.21^{🇺🇸 Amazon76.76.21.0/24 EC2 Prefix}
NS	`abdullah.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2ccb^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`abdullah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3cb^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`abdullah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23cb^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`abdullah.ns.cloudflare.com`
		A	108.162.195.203^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`abdullah.ns.cloudflare.com`
		A	162.159.44.203^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`abdullah.ns.cloudflare.com`
		A	172.64.35.203^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`abdullah.ns.cloudflare.com`
NS	`kristina.ns.cloudflare.com`
		A	2606:4700:50::a29f:267d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kristina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c27d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kristina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:227d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kristina.ns.cloudflare.com`
		A	108.162.194.125^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kristina.ns.cloudflare.com`
		A	162.159.38.125^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kristina.ns.cloudflare.com`
		A	172.64.34.125^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kristina.ns.cloudflare.com`
MX	`email.webglobe.cz` ⭐
		A	2001:1ab0:7e1f:1::1:5^{🇨🇿 IGNUM-AS2001:1ab0::/32 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/}
			PTR	`email.webglobe.cz`
		A	130.193.14.154^{🇨🇿 IGNUM-AS130.193.8.0/21 Webglobe s.r.o. H90}
			PTR	`email.webglobe.cz`
MX	`email2.webglobe.cz` ⭐
		A	130.193.14.154^{🇨🇿 IGNUM-AS130.193.8.0/21 Webglobe s.r.o. H90}
			PTR	`email.webglobe.cz`
MX	`email3.webglobe.cz` ⭐
		A	2001:880:0:15::2b1^{🇩🇪 ONE-NETWORK2001:880::/32}
			PTR	`email3.webglobe.cz`
		A	185.102.21.80^{🇨🇿 ONE-NETWORK185.102.21.0/24}
			PTR	`email3.webglobe.cz`
MX	`email4.webglobe.cz` ⭐
		A	185.102.21.80^{🇨🇿 ONE-NETWORK185.102.21.0/24}
			PTR	`email3.webglobe.cz`
TXT	`v=spf1 a mx include:_spf.webglobe.cz -all`
TXT	`v=spf2.0/mfrom,pra +a +mx include:_spf2.webglobe.cz -all`
SOA	`abdullah.ns.cloudflare.com`dns@cloudflare.com serial=2415635528

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1790209979

Same first word

stack-optimizer.pages.dev

stack-optimizer.com

Previous names

Next names

DNS History

7 records (7 active, 0 former)

●NSabdullah.ns.cloudflare.com2026-09-19 → 2026-09-24 · 2 obs

● 2026-09-19 06:42:54
● 2026-09-24 00:48:54

●NSkristina.ns.cloudflare.com2026-09-19 → 2026-09-24 · 2 obs

● 2026-09-19 06:42:54
● 2026-09-24 00:48:54

●MXemail.webglobe.cz2026-09-19 → 2026-09-24 · 2 obs

● 2026-09-19 06:42:54
● 2026-09-24 00:48:54

●MXemail2.webglobe.cz2026-09-19 → 2026-09-24 · 2 obs

● 2026-09-19 06:42:54
● 2026-09-24 00:48:54

●MXemail3.webglobe.cz2026-09-19 → 2026-09-24 · 2 obs

● 2026-09-19 06:42:54
● 2026-09-24 00:48:54

●MXemail4.webglobe.cz2026-09-19 → 2026-09-24 · 2 obs

● 2026-09-19 06:42:54
● 2026-09-24 00:48:54

●A76.76.21.212026-09-19 → 2026-09-24 · 2 obs

● 2026-09-19 06:42:54
● 2026-09-24 00:48:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
stack-optimizer.com	kristina.ns.cloudflare.com, abdullah.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.203

NS records: kristina.ns.cloudflare.com, abdullah.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1056ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`76.76.21.21`
NS	2	`abdullah.ns.cloudflare.com, kristina.ns.cloudflare.com`
MX	4	`email.webglobe.cz (pri: 10), email2.webglobe.cz (pri: 10)...`
TXT	2	`v=spf1 a mx include:_spf.webglobe.cz -al, v=spf2.0/mfrom,pra +a +mx include:_spf2.`
SOA	1	`abdullah.ns.cloudflare.com dns.cloudflar`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (kristina.ns.cloudflare.com, kristina.ns.cloudflare.com, kristina.ns.cloudflare.com...)

Analysis

IP Addresses

stack-optimizer.com resolves to just one IP address, 76.76.21.21.

Two other host names, along with bidrove.com, mintjeweler.com and pepece.cn, also share IP numbers with stack-optimizer.com.

Name Servers

stack-optimizer.com uses two name servers for its delegation: abdullah.ns.cloudflare.com and kristina.ns.cloudflare.com.

stack-optimizer.com shares its NS records with other domains, for example panoramabiblico-3cl.pages.dev, hoangi19.id.vn, metodopregaroficial.pages.dev and two others.

stack-optimizer.com partially shares its NS delegation with several other domains, including lospanchoslakeworth.com, g2g-magic.org, kayshappytails.com and two others.

These name servers regularly co-occur with the name servers aleena.ns.cloudflare.com, jakub.ns.cloudflare.com and maria.ns.cloudflare.com.

DNS names with 6 IP addresses:

Hostname abdullah.ns.cloudflare.com directs to 108.162.195.203, 162.159.44.203 and 172.64.35.203 along with 3 other IP addresses.

Hostname kristina.ns.cloudflare.com directs to 108.162.194.125, 162.159.38.125 and 172.64.34.125 along with 3 other IP addresses.

Mail Servers

stack-optimizer.com has four mail servers: email2.webglobe.cz, email3.webglobe.cz, email4.webglobe.cz and email.webglobe.cz.

There is at least a partial MX overlap between stack-optimizer.com and other domains, including dobrotym.cz, opticostsolution.cz, tkrejci.eu and two others.

Host names that have two IP addresses:

email3.webglobe.cz directs traffic to 185.102.21.80 and 2001:880:0:15::2b1.

email.webglobe.cz directs traffic to 130.193.14.154 and 2001:1ab0:7e1f:1::1:5.

Host names that point to one IP address:

email2.webglobe.cz has the IP address 130.193.14.154.

email4.webglobe.cz has the IP address 185.102.21.80.

Both email3.webglobe.cz and email4.webglobe.cz resolve to 185.102.21.80 IP addresses each.

Both email.webglobe.cz and email2.webglobe.cz resolve to 130.193.14.154 IP addresses each.