surfschule.net - robtex.com
surfschule.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 213.133.104.56🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1 | ||||||
| PTR | www56.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.surfschule.net ⭐ | ||||||
| A | 213.133.104.56🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1 | ||||||
| PTR | www56.your-server.de | ||||||
| SOA | ns1.first-ns.depostmaster@robot.first-ns.de 2011-12-23 #0 | ||||||
net
| 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=1776086687 | ||||||
Subdomains
mail.surfschule.net |
DNS History
5 records (5 active, 0 former)
●NSns1.first-ns.de2015-07-03 → 2026-04-13 · 2 obs
● 2026-04-13 13:35:04
●NSrobotns2.second-ns.de2015-07-03 → 2026-04-13 · 2 obs
● 2026-04-13 13:35:04
●NSrobotns3.second-ns.com2015-07-03 → 2026-04-13 · 2 obs
● 2026-04-13 13:35:04
●MXmail.surfschule.net2015-07-03 → 2026-04-13 · 2 obs
● 2026-04-13 13:35:04
●A213.133.104.562015-07-03 → 2026-04-13 · 2 obs
● 2026-04-13 13:35:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| surfschule.net | ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com | - |
✅ 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 surfschule.net (unsigned zone)
⏱️ Timing
Total: 659ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 213.133.104.56 |
| NS | 3 | robotns3.second-ns.com, ns1.first-ns.de... |
| MX | 1 | mail.surfschule.net (pri: 10) |
| SOA | 1 | ns1.first-ns.de postmaster.robot.first-n |
Analysis
Hierarchy
mail.surfschule.net has surfschule.net as its parent.
IP Addresses
surfschule.net maps to IP address 213.133.104.56.
Other host names, for instance mail.billert.de, mail.onlist.org, mail.tri-game.com, mail.web360.de and mail.(0x616e616c)ia.de share IP numbers with surfschule.net.
Name Servers
surfschule.net is delegated to name servers robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.
surfschule.net at least partially shares name servers with other domains such as codinguncut.com, saalfelderwaescherei.de, edeltracht.at, in-agent.de and evs-online.org.
Host names with two IP numbers:
robotns3.second-ns.com points to 2001:67c:192c::add:a3 and 193.47.99.3.
ns1.first-ns.de points to 2a01:4f8:0:a101::a:1 and 213.239.242.238.
robotns2.second-ns.de points to 2a01:4f8:0:1::5ddc:2 and 213.133.100.103.
Mail Servers
surfschule.net is handled by a single mail server, mail.surfschule.net.
mail.surfschule.net points to one IP number: 213.133.104.56.