mx1.web4u.cz - robtex.com
mx1.web4u.cz
| DNSSEC | ⚠️ Not signed | ||||||
web4u.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 2001:1568::19🇨🇿 WEB4U2001:1568::/33 | ||||||
| A | 81.91.86.19🇨🇿 WEB4U81.91.80.0/21 | ||||||
| NS | ns2.web4u.cz ⭐ | ||||||
| NS | ns.web4u.cz | ||||||
| MX | mx.web4u.cz ⭐ | ||||||
| TXT | smv=9d9c9b062c03b840 | ||||||
| TXT | MS=0394720CC11BB6E64FFED5064A40D0401C20807E | ||||||
| TXT | zoho-verification=zb27107936.zmverify.zoho.eu | ||||||
| TXT | v=spf1 ip4:81.91.87.150 ip4:81.91.87.80 ip4:81.91.87.60 ip4:81.91.87.250 ip4:... | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2026-07-20 #2 | ||||||
rank #65446 globally
rank #231 in the tld
WOT: SAFE (73/100)
📈 Tranco rank: #16,310
MX for
Same first word
Similar names
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| web4u.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: 875ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 4
In-bailiwick: 4 (ns.web4u.cz, ns2.web4u.cz, ns.web4u.cz...)