linuxadmin.cz - dns.ninja
linuxadmin.cz
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=1781772439 | ||||||
PTR for
Subdomains
Same first word
Similar names
DNS History
12 records (6 active, 6 former)
○NSns.forpsi.cn2009-01-21 → 2009-01-21 · 3 obs
○ 2015-06-18 04:35:02
○ 2026-06-18 09:02:24
●NSns.forpsi.it2015-06-18 → 2026-06-18 · 3 obs
● 2015-06-18 04:35:02
● 2026-06-18 09:02:24
●NSns.forpsi.net2009-01-21 → 2026-06-18 · 2 obs
● 2026-06-18 09:02:24
○NSns.forpsi.us2009-01-21 → 2009-01-21 · 3 obs
○ 2015-06-18 04:35:02
○ 2026-06-18 09:02:24
○MXemail.avando.cz2015-06-18 → 2017-06-05 · 5 obs
● 2015-06-18 04:35:02
● 2017-06-05 08:41:14
○ 2026-03-08 20:22:04
○ 2026-06-18 09:02:24
●MXff0e94c7b0d2a15d.mx1.emailprofi.seznam.cz2026-03-08 → 2026-06-18 · 3 obs
● 2026-03-08 20:22:04
● 2026-06-18 09:02:24
●MXff0e94c7b0d2a15d.mx2.emailprofi.seznam.cz2026-03-08 → 2026-06-18 · 3 obs
● 2026-03-08 20:22:04
● 2026-06-18 09:02:24
○MXsamantha.linuxadmin.cz2009-01-21 → 2009-01-21 · 3 obs
○ 2015-06-18 04:35:02
○ 2026-06-18 09:02:24
●A37.205.10.1972026-03-08 → 2026-06-18 · 3 obs
● 2026-03-08 20:22:04
● 2026-06-18 09:02:24
○A78.102.49.2502009-01-21 → 2009-01-21 · 3 obs
○ 2015-06-18 04:35:02
○ 2026-06-18 09:02:24
○A83.167.253.2302015-06-18 → 2017-06-05 · 5 obs
● 2015-06-18 04:35:02
● 2017-06-05 08:41:14
○ 2026-03-08 20:22:04
○ 2026-06-18 09:02:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | b.ns.nic.cz, a.ns.nic.cz, d.ns.nic.cz, c.ns.nic.cz | - |
| linuxadmin.cz | ns.forpsi.cz, ns.forpsi.it, ns.forpsi.net | 2 records |
✅ Authoritative Response
Server:81.2.194.130
NS records: ns.forpsi.cz, ns.forpsi.it, ns.forpsi.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 763ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.205.10.197 |
| NS | 3 | ns.forpsi.cz, ns.forpsi.it... |
| MX | 2 | ff0e94c7b0d2a15d.mx1.emailprofi.seznam.c, ff0e94c7b0d2a15d.mx2.emailprofi.seznam.c |
| TXT | 1 | "v=spf1 include:spf.seznam.cz ~all" |
| SOA | 1 | ns.forpsi.net admin.forpsi.net |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns.forpsi.cz, ns.forpsi.cz)
Analysis
Hierarchy
linuxadmin.cz sits above madison.linuxadmin.cz, samantha.linuxadmin.cz and www.linuxadmin.cz in the domain hierarchy.
IP Addresses
linuxadmin.cz resolves to just one IP address, 37.205.10.197.
Further host names like smidek.net and listonoh.cz overlap in IP numbers with linuxadmin.cz.
Name Servers
linuxadmin.cz has three name servers — ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net.
There is at least partial name server overlap between linuxadmin.cz and other domains — kofron.eu, lifesize.cz, koksovbaksa.sk and two more among them.
These name servers are routinely deployed together with the name servers ns.forpsi.us.
Each of ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net points to two IP numbers. ns.forpsi.cz points to 81.2.209.185 and 2001:15e8:201:1::d1b9. ns.forpsi.it points to 95.110.254.165 and 2a00:6d41:2:1::5. ns.forpsi.net points to 81.2.194.130 and 2001:15e8:101:1::c282.
Mail Servers
linuxadmin.cz is served by two mail servers, ff0e94c7b0d2a15d.mx1.emailprofi.seznam.cz and ff0e94c7b0d2a15d.mx2.emailprofi.seznam.cz.
Both ff0e94c7b0d2a15d.mx1.emailprofi.seznam.cz and ff0e94c7b0d2a15d.mx2.emailprofi.seznam.cz have two IP addresses each. ff0e94c7b0d2a15d.mx1.emailprofi.seznam.cz resolves to 77.75.77.56 and 2a02:598:2::1056; ff0e94c7b0d2a15d.mx2.emailprofi.seznam.cz resolves to 77.75.77.146 and 2a02:598:2::1146.