fd.cz - robtex.com
fd.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.91.84.51 | ||||||
| NS | ns2.web4u.cz ⭐ | ||||||
| NS | ns.web4u.cz | ||||||
| MX | mail.fd.cz ⭐ | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2013-12-23 #1 | ||||||
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=1771291036 | ||||||
Subdomains
mail.fd.cz |
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●MXmail.fd.cz2015-07-21 → 2026-03-06 · 2 obs
● 2015-07-21 18:10:36
● 2026-03-06 09:46:32
● 2026-03-06 09:46:32
●A81.91.84.512015-07-21 → 2026-03-06 · 2 obs
● 2015-07-21 18:10:36
● 2026-03-06 09:46:32
● 2026-03-06 09:46:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | 8 records |
| fd.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: 2294ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.91.84.51 |
| NS | 2 | ns.web4u.cz, ns2.web4u.cz |
| MX | 1 | mail.fd.cz (pri: 10) |
| SOA | 1 | ns.web4u.cz admin.web4u.cz |
📌 Glue Records Collected
Total: 12
In-bailiwick: 8 (a.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz...)
Out-of-bailiwick: 4 (ns.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)
Analysis
Hierarchy
fd.cz is the parent of mail.fd.cz.
IP Addresses
fd.cz points to IP number 81.91.84.51.
Name Servers
fd.cz is delegated to two name servers: ns2.web4u.cz and ns.web4u.cz.