`sys007-101.zserver.cz`

DNSSEC	⚠️ Not signed
A	51.255.133.236^{🇫🇷 OVH51.254.0.0/15}
		PTR	`sys007-101.zserver.cz`

`zserver.cz`

	DNSSEC	⚠️ Not signed
	A	2001:41d0:c:f95::2010^{🇫🇷 OVH2001:41d0::/32 IPv6}
	A	94.23.174.84^{🇫🇷 OVH94.23.0.0/16 ISP Paris, France}
	NS	`ns1.zserver.cz` ⭐
	NS	`ns2.zserver.eu`
	MX	`mx1.zserver.cz` ⭐
	MX	`mx2.zserver.eu`⁽²⁰⁾
	TXT	`v=spf1 mx a ip4:193.165.180.254 ip4:84.242.69.2 ip4:83.208.137.247 ip4:77.78....`
	TXT	`google-site-verification=amOcIEsxzVVWvKbmXpmpv5D5qxTuGl2DP8JynhoniQE`
	SOA	`ns1.zserver.cz`hostmaster@zserver.cz 2026-03-03 #1

WOT: SAFE (62/100)
WOT: SAFE (77/100)
📈 Tranco rank: #118,395

PTR for

236.133.255.51.in-addr.arpa

NS for

oblecenipromotorkare.cz

chopperstyle.cz

vyfukynamoto.cz

retezynamoto.cz

crosszone.cz

DNS History

1 record (1 active, 0 former)

●A51.255.133.2362016-02-01 → 2026-05-11 · 2 obs

● 2016-02-01 18:41:42
● 2026-05-11 16:10:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	b.ns.nic.cz, a.ns.nic.cz, d.ns.nic.cz, c.ns.nic.cz	-
zserver.cz	ns1.zserver.cz, ns2.zserver.eu	1 record

✅ Authoritative Response

Server:94.23.171.16

NS records: ns1.zserver.cz, ns2.zserver.eu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for zserver.cz (unsigned zone)

⏱️ Timing

Total: 1128ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`51.255.133.236`

📌 Glue Records Collected

Total: 1

In-bailiwick: 1 (ns1.zserver.cz)

Analysis

Name Server Role

sys007-101.zserver.cz serves as a name server for oblecenipromotorkare.cz, chopperstyle.cz, vyfukynamoto.cz, retezynamoto.cz and crosszone.cz.

sdns2.ovh.net commonly serves as a name server together with sys007-101.zserver.cz.

IP Addresses

sys007-101.zserver.cz resolves to a single IP: 51.255.133.236.

Other host names, for instance mail.vyfukynamoto.cz, vyfukynamoto.cz, mail.chopperstyle.cz, crosszone.cz and mail.crosszone.cz share IP numbers with sys007-101.zserver.cz.

sys007-101.zserver.cz - robtex.com