schulcheck.com - dns.ninja
schulcheck.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 78.46.4.153🇩🇪 Hetzner78.46.0.0/15 HETZNER-RZ-NBG-BLK5 | ||||||
| PTR | dedi1453.your-server.de | ||||||
| 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.schulcheck.com ⭐ | ||||||
| A | 78.46.4.153🇩🇪 Hetzner78.46.0.0/15 HETZNER-RZ-NBG-BLK5 | ||||||
| PTR | dedi1453.your-server.de | ||||||
| SOA | ns1.first-ns.dedns@hetzner.com 2026-04-14 #0 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1786613559 | ||||||
Subdomains
mail.schulcheck.com |
Same first word
schulcheck.com |
schulcheck.de |
DNS History
5 records (5 active, 0 former)
●NSns1.first-ns.de2016-12-19 → 2026-08-13 · 2 obs
● 2026-08-13 09:34:02
●NSrobotns2.second-ns.de2016-12-19 → 2026-08-13 · 2 obs
● 2026-08-13 09:34:02
●NSrobotns3.second-ns.com2016-12-19 → 2026-08-13 · 2 obs
● 2026-08-13 09:34:02
●MXmail.schulcheck.com2016-12-19 → 2026-08-13 · 2 obs
● 2026-08-13 09:34:02
●A78.46.4.1532016-12-19 → 2026-08-13 · 2 obs
● 2026-08-13 09:34:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| schulcheck.com | ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com | 2 records |
✅ Authoritative Response
Server:213.239.242.238
NS records: ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for schulcheck.com (unsigned zone)
⏱️ Timing
Total: 721ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 78.46.4.153 |
| NS | 3 | robotns3.second-ns.com, ns1.first-ns.de... |
| MX | 1 | mail.schulcheck.com (pri: 10) |
| SOA | 1 | ns1.first-ns.de dns.hetzner.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (robotns3.second-ns.com, robotns3.second-ns.com)
Analysis
Hierarchy
mail.schulcheck.com is delegated beneath schulcheck.com.
IP Addresses
schulcheck.com resolves to one IP address: 78.46.4.153.
veganlust.com, mail.inko-versand.de, inko-box.com and two other host names share IP numbers with schulcheck.com.
Name Servers
Three name servers are authoritative for schulcheck.com: robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.
There is at least partial name server overlap between schulcheck.com and other domains — roshandel.net, lipsia.com, xn--sattelsttze-0hb.de and two more among them.
These name servers are routinely deployed together with the name servers hydrogen.ns.hetzner.com.
robotns3.second-ns.com resolves to 193.47.99.3 and 2001:67c:192c::add:a3. ns1.first-ns.de resolves to 213.239.242.238 and 2a01:4f8:0:a101::a:1. robotns2.second-ns.de resolves to 213.133.100.103 and 2a01:4f8:0:1::5ddc:2. All three hostnames point to two IP numbers each.
Mail Servers
Mail for schulcheck.com is handled by a single mail server, mail.schulcheck.com.
There is one IP number for mail.schulcheck.com: 78.46.4.153.