webmail.dct.cz - robtex.com
webmail.dct.cz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.91.86.29🇨🇿 WEB4U81.91.80.0/21 | ||||||
| PTR | webmail.web4u.cz | ||||||
dct.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 81.91.86.10🇨🇿 WEB4U81.91.80.0/21 | ||||||
| NS | ns2.web4u.cz ⭐ | ||||||
| NS | ns.web4u.cz | ||||||
| MX | mx1.mailchannels.net ⭐ | ||||||
| MX | mx2.mailchannels.net ⭐ | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2025-04-30 #0 | ||||||
Same first word
Similar names
DNS History
1 record (1 active, 0 former)
●A81.91.86.292015-08-22 → 2026-04-14 · 2 obs
● 2015-08-22 16:10:26
● 2026-04-14 12:01:44
● 2026-04-14 12:01:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| dct.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: 895ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.91.86.29 |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)
Analysis
IP Addresses
webmail.dct.cz resolves to one IP number: 81.91.86.29.
other host names including webmail.hydraulics-brno.cz, webmail.mgo.cz, webmail.optime.cz, webmail.brnoizol.cz and webmail.altopraha.cz share IP numbers with webmail.dct.cz.