csb-college.de - robtex.com
csb-college.de
| DNSSEC | ⚠️ Not signed | ||||||
| NS | pns.dtag.de ⚠️ Not in zone NS records | ||||||
| A | 2003:40:8000::100🇩🇪 DTAG2003::/19 Deutsche Telekom large PA space | ||||||
| PTR | pns.dtag.de | ||||||
| A | 194.25.0.125🇩🇪 DTAG194.25.0.0/16 Deutsche Telekom AG, Internet service provider | ||||||
| PTR | pns.dtag.de | ||||||
| NS | secondary004.dtag.net ⚠️ Not in zone NS records | ||||||
| A | 2a00:fa8:3:0:100:0:4:1🇩🇪 NETUSE2a00:fa8:3::/48 NSDTAG | ||||||
| PTR | secondary004.dtag.net | ||||||
| A | 195.244.245.27🇩🇪 NETUSE195.244.245.0/24 | ||||||
| PTR | secondary004.dtag.net | ||||||
| MX | mail.csb-college.de ⭐ | ||||||
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=1785772907 | ||||||
Subdomains
mail.csb-college.de |
Same first word
csb-college.de |
DNS History
5 records (3 active, 2 former)
●NSsecondary004.dtag.net2015-06-22 → 2026-08-03 · 2 obs
● 2026-08-03 16:06:42
○NSsrvdns12026-07-10 → 2026-07-10 · 3 obs
● 2026-07-10 11:57:40
○ 2026-08-03 16:06:42
○NSsrvmail2015-06-22 → 2020-02-25 · 4 obs
● 2020-02-25 10:39:48
○ 2026-04-08 22:21:50
○ 2026-08-03 16:06:42
●MXmail.csb-college.de2026-07-10 → 2026-08-03 · 2 obs
● 2026-08-03 16:06:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| csb-college.de | pns.dtag.de, secondary004.dtag.net | 2 records |
✅ Authoritative Response
Server:194.25.0.125
NS records: pns.dtag.de, secondary004.dtag.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for csb-college.de (unsigned zone)
⏱️ Timing
Total: 888ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | pns.dtag.de, secondary004.dtag.net |
| MX | 1 | mail.csb-college.de (pri: 100) |
| SOA | 1 | srvdns1 webmaster.csb.de |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (pns.dtag.de, pns.dtag.de)
Analysis
Hierarchy
csb-college.de is a parent domain of mail.csb-college.de.
Name Servers
csb-college.de uses two name servers for its delegation: pns.dtag.de and secondary004.dtag.net.
The name server configuration of csb-college.de is shared with other domains, for instance 228.128.87.in-addr.arpa, 111.185.212.in-addr.arpa, 109.150.80.in-addr.arpa and two others.
csb-college.de shares at least some of its name servers with other domains, including 170.139.87.in-addr.arpa, bohnenkamp-benelux.com, hws-projektengineering.de and two others.
These name servers are frequently seen alongside ns1.telekom.net, secondary007.dtag.net, secondary006.dtag.net and 7 other name servers.
The two host names pns.dtag.de and secondary004.dtag.net each have a pair of IP addresses: pns.dtag.de has 194.25.0.125 and 2003:40:8000::100, and secondary004.dtag.net has 195.244.245.27 and 2a00:fa8:3:0:100:0:4:1.