`mail.bioionic.cz`

CNAME	`mail.gransy.com`
DNSSEC	⚠️ Not signed
A	2001:1528:137::f1^{🇨🇿 CASABLANCA-AS2001:1528::/32 Casablanca INT v6 network}
		PTR	`mail.gransy.com`
A	82.208.29.194^{🇨🇿 CASABLANCA-AS82.208.28.0/23 Casablanca INT}
A	185.28.193.5^{🇨🇿 GRANSY185.28.193.0/24 Network of Gransy s.r.o.}
A	185.28.193.11^{🇨🇿 GRANSY185.28.193.0/24 Network of Gransy s.r.o.}
A	185.28.193.23^{🇨🇿 GRANSY185.28.193.0/24 Network of Gransy s.r.o.}
A	185.28.193.36^{🇨🇿 GRANSY185.28.193.0/24 Network of Gransy s.r.o.}
A	185.28.193.37^{🇨🇿 GRANSY185.28.193.0/24 Network of Gransy s.r.o.}
TXT	`v=spf1 a mx ip4:77.78.104.0/24 ip4:185.28.192.0/22 ip4:185.38.108.0/22 ip4:18...`

`bioionic.cz`

	DNSSEC	🔒 Signed (DS record present)
	A	77.78.104.3^{🇨🇿 CASABLANCA-AS77.78.96.0/20 Casablanca INT}
	NS	`ns2.gransy.com` ⭐
	NS	`ns.gransy.com`
	NS	`ns3.gransy.com`
	NS	`ns4.gransy.com`
	NS	`ns5.gransy.com`
	MX	`mail.bioionic.cz` ⭐
	TXT	`v=spf1 a mx include:gransy.com`
	SOA	`ns.gransy.com`root@gransy.com serial=2753240284

WOT: SAFE (60/100)

MX for

bioionic.cz

Same first word

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DNS History

2 records (1 active, 1 former)

○A212.239.57.2212015-07-07 → 2015-11-16 · 4 obs

● 2015-07-07 13:02:36
● 2015-11-16 00:56:14
○ 2016-03-19 08:03:34
○ 2026-04-26 08:49:46

●CNAMEmail.gransy.com2026-04-07 → 2026-04-26 · 2 obs

● 2026-04-07 16:51:46
● 2026-04-26 08:49:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
bioionic.cz	ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com...	-

✅ Authoritative Response

Server:66.42.94.136

NS records: ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1421ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`mail.gransy.com`

Analysis

Mail Server Role

mail.bioionic.cz acts as a mail server for bioionic.cz.

IP Addresses

Seven IP numbers are pointed to by mail.bioionic.cz: 2001:1528:137::f1, 82.208.29.194, 185.28.193.5, 185.28.193.11, 185.28.193.23, 185.28.193.36 and 185.28.193.37.

Other host names, for instance mail.nucleo.cz, mail.hypoteky-kalkulacka.cz, mail.serialyonline.cz, mail.beeager.sk and mail.eshopio.eu share IP numbers with mail.bioionic.cz.

mail.bioionic.cz - robtex.com

mail.bioionic.cz

bioionic.cz