calculia.de - robtex.com
calculia.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 138.201.54.155🇩🇪 Hetzner138.201.0.0/16 HETZNER-RZ-BLK-ERX4 | ||||||
| NS | ns1.first-ns.de ⭐ | ||||||
| A | 2a01:4f8:0:a101::a:1🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | ns1.first-ns.de | ||||||
| A | 213.239.242.238🇩🇪 Hetzner213.239.192.0/18 HETZNER-RZ-NBG-BLK2 | ||||||
| PTR | ns1.first-ns.de | ||||||
| NS | robotns2.second-ns.de | ||||||
| A | 2a01:4f8:0:1::5ddc:2🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | robotns2.second-ns.de | ||||||
| A | 213.133.100.103🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1 | ||||||
| PTR | robotns2.second-ns.de | ||||||
| NS | robotns3.second-ns.com | ||||||
| A | 2001:67c:192c::add:a3🇩🇪 NORIS-NETWORK2001:67c:192c::/48 | ||||||
| PTR | robotns3.second-ns.com | ||||||
| A | 193.47.99.3🇩🇪 NORIS-NETWORK193.47.99.0/24 | ||||||
| PTR | robotns3.second-ns.com | ||||||
| MX | mail.calculia.de ⭐ | ||||||
| A | 138.201.54.155🇩🇪 Hetzner138.201.0.0/16 HETZNER-RZ-BLK-ERX4 | ||||||
| TXT | v=spf1 ip4:138.201.54.155 -all | ||||||
| SOA | ns1.first-ns.dedns@hetzner.com 2025-11-25 #0 | ||||||
de
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | f.nic.de ⭐ | ||||||
| NS | a.nic.de | ||||||
| NS | l.de.net ⚠️ Not in parent delegation | ||||||
| NS | n.de.net ⚠️ Not in parent delegation | ||||||
| NS | s.de.net ⚠️ Not in parent delegation | ||||||
| NS | z.nic.de | ||||||
| SOA | f.nic.dedns-operations@denic.de serial=1785367236 | ||||||
Subdomains
mail.calculia.de |
Same first word
Similar names
DNS History
6 records (5 active, 1 former)
●NSns1.first-ns.de2015-05-13 → 2026-07-29 · 2 obs
● 2026-07-29 23:36:28
●NSrobotns2.second-ns.de2015-05-13 → 2026-07-29 · 2 obs
● 2026-07-29 23:36:28
●NSrobotns3.second-ns.com2015-05-13 → 2026-07-29 · 2 obs
● 2026-07-29 23:36:28
●MXmail.calculia.de2015-05-13 → 2026-07-29 · 2 obs
● 2026-07-29 23:36:28
●A138.201.54.1552016-07-19 → 2026-07-29 · 3 obs
● 2016-07-19 15:56:04
● 2026-07-29 23:36:28
○A78.46.98.2022015-05-13 → 2016-03-28 · 4 obs
● 2016-03-28 16:16:40
○ 2016-07-19 15:56:04
○ 2026-07-29 23:36:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| calculia.de | ns1.first-ns.de, robotns3.second-ns.com, robotns2.second-ns.de | - |
✅ Authoritative Response
Server:193.47.99.3
NS records: ns1.first-ns.de, robotns3.second-ns.com, robotns2.second-ns.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for calculia.de (unsigned zone)
⏱️ Timing
Total: 1154ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 138.201.54.155 |
| NS | 3 | ns1.first-ns.de, robotns2.second-ns.de... |
| MX | 1 | mail.calculia.de (pri: 10) |
| TXT | 1 | v=spf1 ip4:138.201.54.155 -all |
| SOA | 1 | ns1.first-ns.de dns.hetzner.com |
Analysis
Hierarchy
The domain mail.calculia.de falls under the parent calculia.de.
IP Addresses
calculia.de points to a single IP number: 138.201.54.155.
Additional host names — mail.xbahn.de, calculia.com, bierpunkt.de and two others — share IP numbers with calculia.de.
Name Servers
calculia.de carries NS records delegating to robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.
At least some of calculia.de's name servers are shared with other domains, for example sp-stenzel.de, wellering.com, scot-eire.de and two more.
These name servers tend to be deployed in combination with the name servers hydrogen.ns.hetzner.com and ns.second-ns.com.
robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de are three hostnames that each resolve to a pair of IP addresses: robotns3.second-ns.com to 193.47.99.3 and 2001:67c:192c::add:a3, ns1.first-ns.de to 213.239.242.238 and 2a01:4f8:0:a101::a:1, and robotns2.second-ns.de to 213.133.100.103 and 2a01:4f8:0:1::5ddc:2.
Mail Servers
calculia.de has one mail server: mail.calculia.de.
mail.calculia.de carries a single IP number, which is 138.201.54.155.