ptka.de - robtex.com
ptka.de
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-p-1.kit-dns.eu ⭐ | ||||||
| A | 2001:678:da0::53 | ||||||
| A | 185.237.152.53 | ||||||
| NS | ns-p-2.kit-dns.de | ||||||
| A | 2001:678:da4::53 | ||||||
| A | 185.237.153.53 | ||||||
| NS | ns-p-3.kit-dns.net | ||||||
| A | 2a00:139f:e::53 | ||||||
| A | 141.52.0.53 | ||||||
| MX | mx01.kit.edu ⭐ | ||||||
| A | 2a00:1398:9:f711::8d34:e2a1 | ||||||
| A | 141.52.226.161 | ||||||
| MX | mx02.kit.edu ⭐ | ||||||
| A | 2a00:1398:9:f710::810d:aeac | ||||||
| A | 129.13.174.172 | ||||||
| MX | mx03.kit.edu ⭐ | ||||||
| A | 2a00:1398:9:f711::8d34:e2a3 | ||||||
| A | 141.52.226.163 | ||||||
| MX | mx04.kit.edu ⭐ | ||||||
| A | 2a00:1398:9:f710::810d:aeae | ||||||
| A | 129.13.174.174 | ||||||
| TXT | v=spf1 include:spf.scc.kit.edu ~all | ||||||
| SOA | ns-p-1.kit-dns.euhostmaster@kit.edu serial=155 | ||||||
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=1783005336 | ||||||
Same first word
Similar names
DNS History
15 records (7 active, 8 former)
○NSdns1.belwue.de2015-08-23 → 2020-11-10 · 4 obs
● 2020-11-10 00:58:28
○ 2026-04-23 10:38:58
○ 2026-07-02 15:54:20
○NSdns1.kit.edu2015-08-23 → 2020-11-10 · 4 obs
● 2020-11-10 00:58:28
○ 2026-04-23 10:38:58
○ 2026-07-02 15:54:20
○NSdns2.kit.edu2015-08-23 → 2020-11-10 · 4 obs
● 2020-11-10 00:58:28
○ 2026-04-23 10:38:58
○ 2026-07-02 15:54:20
○NSdns3.belwue.de2015-08-23 → 2020-11-10 · 4 obs
● 2020-11-10 00:58:28
○ 2026-04-23 10:38:58
○ 2026-07-02 15:54:20
●NSns-p-1.kit-dns.eu2026-04-23 → 2026-07-02 · 3 obs
● 2026-04-23 10:38:58
● 2026-07-02 15:54:20
●NSns-p-2.kit-dns.de2026-04-23 → 2026-07-02 · 3 obs
● 2026-04-23 10:38:58
● 2026-07-02 15:54:20
●NSns-p-3.kit-dns.net2026-04-23 → 2026-07-02 · 3 obs
● 2026-04-23 10:38:58
● 2026-07-02 15:54:20
●MXmx01.kit.edu2026-04-23 → 2026-07-02 · 3 obs
● 2026-04-23 10:38:58
● 2026-07-02 15:54:20
●MXmx02.kit.edu2026-04-23 → 2026-07-02 · 3 obs
● 2026-04-23 10:38:58
● 2026-07-02 15:54:20
●MXmx03.kit.edu2026-04-23 → 2026-07-02 · 3 obs
● 2026-04-23 10:38:58
● 2026-07-02 15:54:20
●MXmx04.kit.edu2026-04-23 → 2026-07-02 · 3 obs
● 2026-04-23 10:38:58
● 2026-07-02 15:54:20
○MXscc-mailin-cn-01.scc.kit.edu2015-08-23 → 2020-11-10 · 4 obs
● 2020-11-10 00:58:28
○ 2026-04-23 10:38:58
○ 2026-07-02 15:54:20
○MXscc-mailin-cs-01.scc.kit.edu2015-08-23 → 2020-11-10 · 4 obs
● 2020-11-10 00:58:28
○ 2026-04-23 10:38:58
○ 2026-07-02 15:54:20
○MXscc-spamtrap-always-defer.scc.kit.edu2026-04-23 → 2026-06-12 · 5 obs
● 2026-04-23 10:38:58
● 2026-06-12 07:09:50
○ 2026-07-02 15:54:18
○ 2026-07-02 15:54:20
○MXscc-spamtrap-no-smtp-here.scc.kit.edu2026-04-23 → 2026-06-12 · 5 obs
● 2026-04-23 10:38:58
● 2026-06-12 07:09:50
○ 2026-07-02 15:54:18
○ 2026-07-02 15:54:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| ptka.de | ns-p-2.kit-dns.de, ns-p-3.kit-dns.net, ns-p-1.kit-dns.eu | 2 records |
✅ Authoritative Response
Server:185.237.153.53
NS records: ns-p-2.kit-dns.de, ns-p-3.kit-dns.net, ns-p-1.kit-dns.eu
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ptka.de (unsigned zone)
⏱️ Timing
Total: 2302ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | ns-p-1.kit-dns.eu, ns-p-2.kit-dns.de... |
| MX | 4 | mx01.kit.edu (pri: 10), mx04.kit.edu (pri: 10)... |
| TXT | 1 | v=spf1 include:spf.scc.kit.edu ~all |
| SOA | 1 | ns-p-1.kit-dns.eu hostmaster.kit.edu |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-p-2.kit-dns.de, ns-p-2.kit-dns.de)
Analysis
Name Servers
ptka.de is delegated to three name servers: ns-p-2.kit-dns.de, ns-p-1.kit-dns.eu and ns-p-3.kit-dns.net.
There is at least partial name server overlap between ptka.de and other domains — connaix.de, 36.196.193.in-addr.arpa, edml.de and two more among them.
ns-p-2.kit-dns.de, ns-p-1.kit-dns.eu and ns-p-3.kit-dns.net each resolve to two IP addresses: ns-p-2.kit-dns.de resolves to 185.237.153.53 and 2001:678:da4::53; ns-p-1.kit-dns.eu resolves to 185.237.152.53 and 2001:678:da0::53; ns-p-3.kit-dns.net resolves to 141.52.0.53 and 2a00:139f:e::53.
Mail Servers
Mail for ptka.de is handled by four mail servers: mx01.kit.edu, mx02.kit.edu, mx03.kit.edu and mx04.kit.edu.
ptka.de shares mail servers — at least in part — with other domains, including dvgw-ebi.de, eu-bridge.org, ffb.kit.edu and two others.
These mail servers are routinely seen in conjunction with the mail servers scc-spamtrap-always-defer.scc.kit.edu and scc-spamtrap-no-smtp-here.scc.kit.edu.
All four hostnames — mx01.kit.edu, mx02.kit.edu, mx03.kit.edu and mx04.kit.edu — resolve to two IP numbers apiece: mx01.kit.edu to 141.52.226.161 and 2a00:1398:9:f711::8d34:e2a1; mx02.kit.edu to 129.13.174.172 and 2a00:1398:9:f710::810d:aeac; mx03.kit.edu to 141.52.226.163 and 2a00:1398:9:f711::8d34:e2a3; mx04.kit.edu to 129.13.174.174 and 2a00:1398:9:f710::810d:aeae.