mx-us.klassert.de - robtex.com
mx-us.klassert.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a01:4ff:1f0:d140::1🇩🇪 HETZNER-CLOUD3-AS2a01:4ff:100::/40 HETZNER-IPv6-BLK | ||||||
| PTR | hil1-us.slnx.de | ||||||
| A | 5.78.74.155🇺🇸 HETZNER-CLOUD3-AS5.78.74.0/24 | ||||||
klassert.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 116.202.84.118🇩🇪 Hetzner116.202.0.0/16 HETZNER-DC | ||||||
| NS | ns1.first-ns.de ⭐ | ||||||
| NS | robotns2.second-ns.de | ||||||
| NS | robotns3.second-ns.com | ||||||
| MX | mx-de.klassert.de ⭐ | ||||||
| MX | mx-fi.klassert.de(5) | ||||||
| MX | mx-us.klassert.de(10) | ||||||
| TXT | v=spf1 mx ip4:144.76.43.239 ip6:2a01:4f8:191:44ee::2 ip4:144.76.43.252 ip4:14... | ||||||
| SOA | ns1.first-ns.dedns@hetzner.com 2026-04-14 #0 | ||||||
MX for
Similar names
DNS History
2 records (2 active, 0 former)
●A2a01:4ff:1f0:d140::12026-02-15 → 2026-05-10 · 2 obs
● 2026-02-15 02:09:44
● 2026-05-10 15:37:40
● 2026-05-10 15:37:40
●A5.78.74.1552026-02-15 → 2026-05-10 · 2 obs
● 2026-02-15 02:09:44
● 2026-05-10 15:37:40
● 2026-05-10 15:37:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| klassert.de | robotns3.second-ns.com, robotns2.second-ns.de, ns1.first-ns.de | - |
✅ Authoritative Response
Server:213.239.242.238
NS records: robotns3.second-ns.com, robotns2.second-ns.de, ns1.first-ns.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for klassert.de (unsigned zone)
⏱️ Timing
Total: 1552ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 5.78.74.155 |
| AAAA | 1 | 2a01:4ff:1f0:d140::1 |
Analysis
Mail Server Role
mx-us.klassert.de serves as the mail server for klassert.de.
mx-de.klassert.de and mx-fi.klassert.de are commonly used mail servers alongside mx-us.klassert.de.
IP Addresses
mx-us.klassert.de points to two IPs: 2a01:4ff:1f0:d140::1 and 5.78.74.155.
Other host names such as hil1-us.slnx.de, mx-us.slnx.de and mx-us.systemlinux.org share IP numbers with mx-us.klassert.de.