mail.dotnetcrew.com - robtex.com
mail.dotnetcrew.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2001:1568::7010🇨🇿 WEB4U2001:1568::/33 | ||||||
| PTR | mail.web4u.cz | ||||||
| A | 81.91.87.10🇨🇿 WEB4U81.91.80.0/21 | ||||||
dotnetcrew.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2001:1568::14🇨🇿 WEB4U2001:1568::/33 | ||||||
| A | 81.91.86.14🇨🇿 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 2025-05-04 #0 | ||||||
Same first word
Similar names
DNS History
2 records (2 active, 0 former)
●A2001:1568::70102026-03-01 → 2026-05-12 · 2 obs
● 2026-03-01 23:29:48
● 2026-05-12 00:59:34
● 2026-05-12 00:59:34
●A81.91.87.102026-03-01 → 2026-05-12 · 2 obs
● 2026-03-01 23:29:48
● 2026-05-12 00:59:34
● 2026-05-12 00:59:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, c.gtld-servers.net, h.gtld-servers.net, e.gtld-servers.net... | - |
| dotnetcrew.com | ns.web4u.cz, ns2.web4u.cz | - |
✅ Authoritative Response
Server:85.207.53.12
NS records: ns.web4u.cz, ns2.web4u.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dotnetcrew.com (unsigned zone)
⏱️ Timing
Total: 657ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.91.87.10 |
| AAAA | 1 | 2001:1568::7010 |
Analysis
IP Addresses
mail.dotnetcrew.com resolves to two IP numbers: 2001:1568::7010 and 81.91.87.10.
other host names including mail.hmv.cz, mail.tipsestka.cz, mail.mediamix.cz, mail.linsen.at and mail.lovebreakfast.net share IP numbers with mail.dotnetcrew.com.