`smart-course.cz`

DNSSEC	🔒 Signed (DS record present)
A	185.215.4.66^{🇬🇧 DDOS-GUARD185.215.4.0/24 Tilda Publishing LLC}
NS	`ns.forpsi.net` ⭐
		A	2001:15e8:101:1::c282^{🇨🇿 INTERNET-CZ2001:15e8::/32}
			PTR	`ns.forpsi.net`
		A	81.2.194.130^{🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s.}
			PTR	`ns.forpsi.net`
NS	`ns.forpsi.cz`
		A	2001:15e8:201:1::d1b9^{🇨🇿 INTERNET-CZ2001:15e8::/32}
			PTR	`ns.forpsi.cz`
		A	81.2.209.185^{🇨🇿 INTERNET-CZ81.2.209.0/24}
			PTR	`ns.forpsi.cz`
NS	`ns.forpsi.it`
		A	2a00:6d41:2:1::5^{🇮🇹 ARUBA-ASN2a00:6d41::/32 Aruba S.p.A. IPv6 Network}
			PTR	`ns.forpsi.it`
		A	95.110.254.165^{🇮🇹 ARUBA-ASN95.110.192.0/18 Aruba S.p.A. Network}
			PTR	`host165-254-110-95.serverdedicati.aruba.it`
MX	`mxavas.forpsi.com` ⭐
		A	81.2.195.200^{🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s.}
			PTR	`mxavas.forpsi.com`
TXT	`v=spf1 include:servers.mcsv.net ?all`
TXT	`facebook-domain-verification=yji461n7bk56gor8rrlzc9sjmklkek`
SOA	`ns.forpsi.net`admin@forpsi.com 2026-04-09 #1

`cz`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.ns.nic.cz` ⭐
	NS	`b.ns.nic.cz`
	NS	`c.ns.nic.cz`
	NS	`d.ns.nic.cz`
	SOA	`a.ns.nic.cz`hostmaster@nic.cz serial=1775931432

Subdomains

sso.smart-course.cz

Same first word

smart-course.cz

smart-course.com

smart-course.ru

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
smart-course.cz	ns.forpsi.cz, ns.forpsi.it, ns.forpsi.net	2 records

✅ Authoritative Response

Server:95.110.254.165

NS records: ns.forpsi.cz, ns.forpsi.it, ns.forpsi.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1372ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.215.4.66`
NS	3	`ns.forpsi.cz, ns.forpsi.it...`
MX	1	`mxavas.forpsi.com (pri: 10)`
TXT	2	`v=spf1 include:servers.mcsv.net ?all, facebook-domain-verification=yji461n7bk5`
SOA	1	`ns.forpsi.net admin.forpsi.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns.forpsi.cz, ns.forpsi.cz)

Analysis

Hierarchy

sso.smart-course.cz has smart-course.cz as its parent.

IP Addresses

smart-course.cz maps to IP address 185.215.4.66.

Other host names, for instance digitalselectives.com, insilico.com, mail.fuserefrigeration.com, cls-sofia.org and avante.od.ua share IP numbers with smart-course.cz.

Name Servers

smart-course.cz is delegated to name servers ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net.

smart-course.cz at least partially shares name servers with other domains such as go-out.cz, motogart.cz, veganz.cz, ranec.net and vrom.cz.

these name servers are commonly used with the name servers ns.forpsi.us.

Host names with two IP numbers:

ns.forpsi.cz points to 2001:15e8:201:1::d1b9 and 81.2.209.185.

ns.forpsi.it points to 2a00:6d41:2:1::5 and 95.110.254.165.

ns.forpsi.net points to 2001:15e8:101:1::c282 and 81.2.194.130.

Mail Servers

smart-course.cz is handled by a single mail server, mxavas.forpsi.com.

smart-course.cz shares the same mail server setup as other domains, including vykup.eu, aviscolor.cz, ewic.cz, iwe.cz and 213.cz.

smart-course.cz shares some mail servers with other domains, at least partially, for instance macon.cz.

mxavas.forpsi.com points to one IP number: 81.2.195.200.

smart-course.cz - robtex.com

smart-course.cz

cz