mr-mare.cz - robtex.com
mr-mare.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a00:6d40:40:3cb5::1🇮🇹 ARUBA-ASN2a00:6d40::/32 Aruba S.p.A. IPv6 Network | ||||||
| A | 5.249.151.181🇮🇹 ARUBA-ASN5.249.144.0/21 Aruba S.p.A. Network | ||||||
| NS | ns2.web4u.cz ⭐ | ||||||
| A | 2a02:a40:100:28ff::12🇨🇿 BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s. | ||||||
| PTR | ns2.web4u.cz | ||||||
| A | 85.207.53.12🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block | ||||||
| PTR | ns2.web4u.cz | ||||||
| NS | ns.web4u.cz | ||||||
| A | 2001:1568:fd::241🇨🇿 WEB4U2001:1568::/33 | ||||||
| PTR | ns.web4u.cz | ||||||
| A | 185.14.224.241🇨🇿 WEB4U185.14.224.0/23 | ||||||
| PTR | ns.web4u.cz | ||||||
| MX | 3804dd504fd9e1c8.mx1.emailprofi.seznam.cz ⭐ | ||||||
| A | 2a02:598:2::1056🇨🇿 SEZNAM-CZ2a02:598:2::/48 | ||||||
| PTR | wildcard.mx1.emailprofi.seznam.cz | ||||||
| A | 77.75.77.56🇨🇿 SEZNAM-CZ77.75.76.0/23 SEZNAM - III | ||||||
| PTR | wildcard.mx1.emailprofi.seznam.cz | ||||||
| MX | 3804dd504fd9e1c8.mx2.emailprofi.seznam.cz(20) | ||||||
| A | 2a02:598:2::1146🇨🇿 SEZNAM-CZ2a02:598:2::/48 | ||||||
| PTR | wildcard.mx2.emailprofi.seznam.cz | ||||||
| A | 77.75.77.146🇨🇿 SEZNAM-CZ77.75.76.0/23 SEZNAM - III | ||||||
| PTR | wildcard.mx2.emailprofi.seznam.cz | ||||||
| TXT | v=spf1 include:spf.seznam.cz ?all | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2026-02-22 #0 | ||||||
cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.ns.nic.cz ⭐ | ||||||
| NS | b.ns.nic.cz | ||||||
| NS | c.ns.nic.cz | ||||||
| NS | d.ns.nic.cz | ||||||
| SOA | a.ns.nic.czhostmaster@nic.cz serial=1777025836 | ||||||
PTR for
Same first word
mr-mare.cz |
Similar names
DNS History
6 records (6 active, 0 former)
●MX3804dd504fd9e1c8.mx1.emailprofi.seznam.cz2026-04-24 → 2026-04-24 · 2 obs
● 2026-04-24 10:44:20
●MX3804dd504fd9e1c8.mx2.emailprofi.seznam.cz2026-04-24 → 2026-04-24 · 2 obs
● 2026-04-24 10:44:20
●A2a00:6d40:40:3cb5::12026-04-24 → 2026-04-24 · 2 obs
● 2026-04-24 10:44:20
●A5.249.151.1812026-04-24 → 2026-04-24 · 2 obs
● 2026-04-24 10:44:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | c.ns.nic.cz, b.ns.nic.cz, a.ns.nic.cz, d.ns.nic.cz | - |
| mr-mare.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: 659ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 5.249.151.181 |
| AAAA | 1 | 2a00:6d40:40:3cb5::1 |
| NS | 2 | ns.web4u.cz, ns2.web4u.cz |
| MX | 2 | 3804dd504fd9e1c8.mx1.emailprofi.seznam.c, 3804dd504fd9e1c8.mx2.emailprofi.seznam.c |
| TXT | 1 | v=spf1 include:spf.seznam.cz ?all |
| SOA | 1 | ns.web4u.cz admin.web4u.cz |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)
Analysis
IP Addresses
mr-mare.cz resolves to two IP numbers: 2a00:6d40:40:3cb5::1 and 5.249.151.181.
Name Servers
mr-mare.cz is delegated to two name servers ns2.web4u.cz and ns.web4u.cz.
mr-mare.cz shares the same name server setup as other domains, for instance belgianblue.cz, kamenjinak.cz, ltstrela.cz, fiedler.cz and zdenekberan.com.
Host names with two IP numbers:
The host name ns2.web4u.cz points to 2a02:a40:100:28ff::12 and 85.207.53.12; the host name ns.web4u.cz points to 2001:1568:fd::241 and 185.14.224.241.
Mail Servers
Two mail servers handle mr-mare.cz: 3804dd504fd9e1c8.mx1.emailprofi.seznam.cz and 3804dd504fd9e1c8.mx2.emailprofi.seznam.cz.
Host names with two IP numbers:
The host name 3804dd504fd9e1c8.mx1.emailprofi.seznam.cz points to 2a02:598:2::1056 and 77.75.77.56; the host name 3804dd504fd9e1c8.mx2.emailprofi.seznam.cz points to 2a02:598:2::1146 and 77.75.77.146.