`mail.profimail21.cz`

DNSSEC	⚠️ Not signed
A	93.89.159.21^{🇨🇿 EDERA_Group93.89.144.0/20 GRADACE first allocation}
		PTR	`mail.profimail21.cz`

`profimail21.cz`

	DNSSEC	⚠️ Not signed
	NS	`virt2.jicinet.cz` ⭐
	NS	`ns3.jicinet.cz`
	MX	`virt1.jicinet.cz` ⭐
	SOA	`virt2.jicinet.cz`admin-domain@jicinet.cz 2026-05-26 #5

PTR for

21.159.89.93.in-addr.arpa

Same first word

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mail.top

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DNS History

2 records (1 active, 1 former)

●A93.89.159.212026-06-17 → 2026-08-02 · 4 obs

● 2026-06-17 14:32:48
○ 2026-06-17 20:32:50
● 2026-08-02 21:59:48
● 2026-08-02 21:59:50

○CNAMEprofimail21.cz2026-03-29 → 2026-03-29 · 3 obs

● 2026-03-29 01:30:04
○ 2026-06-07 19:28:14
○ 2026-08-02 21:59:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz	-
profimail21.cz	ns3.jicinet.cz, virt2.jicinet.cz	1 record

✅ Authoritative Response

Server:46.234.112.50

NS records: ns3.jicinet.cz, virt2.jicinet.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for profimail21.cz (unsigned zone)

⏱️ Timing

Total: 1235ms | Queries: -

📄 Records

Type	Count	Sample Data

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns3.jicinet.cz)

Analysis

IP Addresses

mail.profimail21.cz resolves to just one IP address, 93.89.159.21.

mail.maconet.cz and virt1.jicinet.cz, along with other host names, share IP addresses with mail.profimail21.cz.

mail.profimail21.cz - robtex.com