tutorialcheck.com - robtex.com
tutorialcheck.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.first-ns.de ⚠️ Not in zone NS records | ||||||
| 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 ⚠️ Not in zone NS records | ||||||
| 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 ⚠️ Not in zone NS records | ||||||
| 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 | ||||||
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=1788103910 | ||||||
Same first word
tutorialcheck.com |
Similar names
Previous names
Next names
DNS History
5 records (3 active, 2 former)
●NSns1.first-ns.de2015-06-24 → 2026-08-30 · 2 obs
● 2026-08-30 15:47:56
●NSrobotns2.second-ns.de2015-06-24 → 2026-08-30 · 2 obs
● 2026-08-30 15:47:56
●NSrobotns3.second-ns.com2015-06-24 → 2026-08-30 · 2 obs
● 2026-08-30 15:47:56
○MXmail.tutorialcheck.com2015-06-24 → 2017-03-14 · 4 obs
● 2017-03-14 18:15:08
○ 2026-08-20 05:05:40
○ 2026-08-30 15:47:56
○A176.9.24.2372015-06-24 → 2017-03-14 · 4 obs
● 2017-03-14 18:15:08
○ 2026-08-20 05:05:40
○ 2026-08-30 15:47:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, l.gtld-servers.net, c.gtld-servers.net, a.gtld-servers.net... | - |
| tutorialcheck.com | ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com | 2 records |
✅ Authoritative Response
Server:213.133.100.103
NS records: ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for tutorialcheck.com (unsigned zone)
⏱️ Timing
Total: 2129ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (robotns3.second-ns.com, robotns3.second-ns.com)
Analysis
Name Servers
Three name servers are authoritative for tutorialcheck.com: robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.
tutorialcheck.com shares at least some of its name servers with other domains, including eiserneketten.de, masterestetic.com, yourvm.de and two others.
These name servers are frequently seen alongside 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.