🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`techstackgraph.com`

DNSSEC	⚠️ Not signed
A	216.150.1.1^{🇨🇦 Amazon216.150.1.0/24 EC2 Prefix}
NS	`ns2.web4u.cz` ⭐
		A	2a02:a40:100:28ff::12^{🇨🇿 BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s.}
			PTR	`ns2.web4u.cz`
		A	85.207.53.12^{🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block}
			PTR	`ns2.web4u.cz`
NS	`ns.web4u.cz`
		A	2001:1568:fd::241^{🇨🇿 WEB4U2001:1568::/33}
			PTR	`ns.web4u.cz`
		A	185.14.224.241^{🇨🇿 WEB4U185.14.224.0/23}
			PTR	`ns.web4u.cz`
MX	`mx1.mailchannels.net` ⭐
		A	54.69.1.140^{🇺🇸 Amazon54.68.0.0/15 EC2 PDX Prefix}
			PTR	`ec2-54-69-1-140.us-west-2.compute.amazonaws.com`
MX	`mx2.mailchannels.net` ⭐
		A	54.69.1.140^{🇺🇸 Amazon54.68.0.0/15 EC2 PDX Prefix}
			PTR	`ec2-54-69-1-140.us-west-2.compute.amazonaws.com`
SOA	`ns.web4u.cz`admin@web4u.cz 2026-01-18 #4

`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=1790634674

Same first word

techstackgraph.com

Previous names

Next names

DNS History

5 records (5 active, 0 former)

●NSns.web4u.cz2026-09-23 → 2026-09-28 · 2 obs

● 2026-09-23 13:50:02
● 2026-09-28 22:34:02

●NSns2.web4u.cz2026-09-23 → 2026-09-28 · 2 obs

● 2026-09-23 13:50:02
● 2026-09-28 22:34:02

●MXmx1.mailchannels.net2026-09-23 → 2026-09-28 · 2 obs

● 2026-09-23 13:50:02
● 2026-09-28 22:34:02

●MXmx2.mailchannels.net2026-09-23 → 2026-09-28 · 2 obs

● 2026-09-23 13:50:02
● 2026-09-28 22:34:02

●A216.150.1.12026-09-23 → 2026-09-28 · 2 obs

● 2026-09-23 13:50:02
● 2026-09-28 22:34:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
techstackgraph.com	ns.web4u.cz, ns2.web4u.cz	-

✅ Authoritative Response

Server:185.14.224.241

NS records: ns.web4u.cz, ns2.web4u.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for techstackgraph.com (unsigned zone)

⏱️ Timing

Total: 988ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`216.150.1.1`
NS	2	`ns.web4u.cz, ns2.web4u.cz`
MX	2	`mx1.mailchannels.net (pri: 10), mx2.mailchannels.net (pri: 10)`
SOA	1	`ns.web4u.cz admin.web4u.cz`

Analysis

IP Addresses

techstackgraph.com resolves to one IP address: 216.150.1.1.

claybird.com, cairnscarwashcafe.com.au, braidhq.net and two other host names share IP numbers with techstackgraph.com.

Name Servers

techstackgraph.com has two authoritative name servers — ns2.web4u.cz and ns.web4u.cz.

techstackgraph.com uses the same name servers as several other domains — among them tntrade.info, bhc-int.eu, vogue-czechia.cz and two more.

Both ns2.web4u.cz and ns.web4u.cz have two IP addresses each. ns2.web4u.cz resolves to 85.207.53.12 and 2a02:a40:100:28ff::12; ns.web4u.cz resolves to 185.14.224.241 and 2001:1568:fd::241.

Mail Servers

Mail for techstackgraph.com is handled by two mail servers — mx1.mailchannels.net and mx2.mailchannels.net.

techstackgraph.com uses an identical mail server configuration to several other domains — among them mail.fswtech.com, healixholistic.com, vinculoconsultoria.com and two more.

At least a portion of techstackgraph.com's mail servers are also used by other domains, for example ubarskit.se.

mx1.mailchannels.net and mx2.mailchannels.net each point to one IP address — 54.69.1.140.

The host names mx1.mailchannels.net and mx2.mailchannels.net both resolve to 54.69.1.140 IP addresses.

techstackgraph.com - robtex.com