`mail.ispis.cz`

DNSSEC	⚠️ Not signed
A	81.91.84.112^{🇨🇿 WEB4U81.91.80.0/21}
		PTR	`vs808.server4u.cz`

`ispis.cz`

	DNSSEC	🔒 Signed (DS record present)
	A	81.91.84.112^{🇨🇿 WEB4U81.91.80.0/21}
	NS	`ns2.web4u.cz` ⭐
	NS	`ns.web4u.cz`
	MX	`mail.ispis.cz` ⭐
	TXT	`google-site-verification=ajItDH7AWbfmJAkzK6f0wZ7CRRTfny9TlANyBb-OGQ4`
	TXT	`v=spf1 ip4:81.91.83.222 ip4:81.91.91.49 ip4:81.91.83.228 ip4:81.91.83.229 ~all`
	SOA	`ns.web4u.cz`admin@web4u.cz 2025-11-12 #6

📈 Tranco rank: #929,000

MX for

ispis.cz

Same first word

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DNS History

1 record (1 active, 0 former)

●A81.91.84.1122015-07-11 → 2026-07-19 · 2 obs

● 2015-07-11 21:56:12
● 2026-07-19 12:40:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	d.ns.nic.cz, b.ns.nic.cz, a.ns.nic.cz, c.ns.nic.cz	-
ispis.cz	ns.web4u.cz, ns2.web4u.cz	4 records

✅ Authoritative Response

Server:85.207.53.12

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 706ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.91.84.112`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)

Analysis

Mail Server Role

Mail for ispis.cz is routed through the mail server mail.ispis.cz.

IP Addresses

mail.ispis.cz has exactly one IP address — 81.91.84.112.

vs808.server4u.cz, www.pozickomat.sk, ispis.sk plus two other host names have IP numbers in common with mail.ispis.cz.

mail.ispis.cz - robtex.com

mail.ispis.cz

ispis.cz