`mail.webhosting21.cz`

CNAME	`webhosting21.cz`
DNSSEC	🔒 Signed (DS record present)
A	217.16.177.75^{🇨🇿 VSHOSTING217.16.176.0/20 III.}
		PTR	`mail.webhosting21.cz`
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	`mail.webhosting21.cz` ⭐
TXT	`google-site-verification=vJpbFMVC5jbG8LTrZ9chCxpHY1AyqKFl3u1mTaaOP1g`
TXT	`v=spf1 ip4:217.16.177.75 ip6:2a00:1ed0:0011:0649:0217:0016:0177:0075 ~all`
SOA	`ns.forpsi.net`admin@forpsi.com 2026-07-05 #1

`webhosting21.cz`

	DNSSEC	🔒 Signed (DS record present)
	A	217.16.177.75^{🇨🇿 VSHOSTING217.16.176.0/20 III.}
	NS	`ns.forpsi.net` ⭐
	NS	`ns.forpsi.cz`
	NS	`ns.forpsi.it`
	MX	`mail.webhosting21.cz` ⭐
	TXT	`google-site-verification=vJpbFMVC5jbG8LTrZ9chCxpHY1AyqKFl3u1mTaaOP1g`
	TXT	`v=spf1 ip4:217.16.177.75 ip6:2a00:1ed0:0011:0649:0217:0016:0177:0075 ~all`
	SOA	`ns.forpsi.net`admin@forpsi.com 2026-07-05 #1

PTR for

75.177.16.217.in-addr.arpa

MX for

magami.cz

czmta.cz

webhosting21.cz

hold-dolak.cz

Same first word

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DNS History

1 record (1 active, 0 former)

●CNAMEwebhosting21.cz2026-02-16 → 2026-07-27 · 2 obs

● 2026-02-16 22:25:40
● 2026-07-27 10:29:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
webhosting21.cz	ns.forpsi.cz, ns.forpsi.it, ns.forpsi.net	2 records

✅ Authoritative Response

Server:81.2.194.130

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: 1348ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`webhosting21.cz`

📌 Glue Records Collected

Total: 2

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

Analysis

Mail Server Role

mail.webhosting21.cz acts as the mail server for magami.cz, czmta.cz, webhosting21.cz and hold-dolak.cz.

IP Addresses

mail.webhosting21.cz points to a single IP number: 217.16.177.75.

Additional host names — mail.magami.cz, mail.sidecar-cz.com, www.sidecar-cz.com and two others — share IP numbers with mail.webhosting21.cz.

Name Servers

mail.webhosting21.cz carries NS records delegating to ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net.

The name servers of mail.webhosting21.cz overlap at least partially with those of other domains — among them cakany.sk, arssystem.cz, nopc.cz and two more.

These name servers commonly appear in combination with the name servers ns.forpsi.us.

ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net are three hostnames that each resolve to a pair of IP addresses: ns.forpsi.cz to 81.2.209.185 and 2001:15e8:201:1::d1b9, ns.forpsi.it to 95.110.254.165 and 2a00:6d41:2:1::5, and ns.forpsi.net to 81.2.194.130 and 2001:15e8:101:1::c282.

Mail Servers

mail.webhosting21.cz has a single mail server: mail.webhosting21.cz itself.

mail.webhosting21.cz has an identical mail server setup to magami.cz, czmta.cz, webhosting21.cz and hold-dolak.cz, as well as other domains.

mail.webhosting21.cz - robtex.com