rt-aktiv.de - robtex.com
rt-aktiv.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 85.13.164.115🇩🇪 NMM-AS85.13.164.0/24 Neue Medien Muennich | ||||||
| PTR | dd12338.kasserver.com | ||||||
| NS | ns5.kasserver.com ⭐ | ||||||
| A | 85.13.128.3🇩🇪 NMM-AS85.13.128.0/24 Neue Medien Muennich | ||||||
| PTR | ns5.kasserver.com | ||||||
| NS | ns6.kasserver.com | ||||||
| A | 85.13.159.101🇩🇪 NMM-AS85.13.159.0/24 Neue Medien Muennich | ||||||
| PTR | ns6.kasserver.com | ||||||
| MX | w01737a1.kasserver.com ⭐ | ||||||
| A | 85.13.164.115🇩🇪 NMM-AS85.13.164.0/24 Neue Medien Muennich | ||||||
| PTR | dd12338.kasserver.com | ||||||
| TXT | v=spf1 a mx include:spf.kasserver.com ~all | ||||||
| SOA | ns5.kasserver.comhostmaster@kasserver.com serial=2602181332 | ||||||
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=1777040160 | ||||||
Subdomains
mail.rt-aktiv.de |
DNS History
9 records (4 active, 5 former)
○NSns1.virtualhosts.de2015-04-24 → 2017-07-10 · 4 obs
● 2017-07-10 16:07:44
○ 2026-04-24 14:46:52
○ 2026-04-24 14:46:54
○NSns2.virtualhosts.de2015-04-24 → 2017-07-10 · 4 obs
● 2017-07-10 16:07:44
○ 2026-04-24 14:46:52
○ 2026-04-24 14:46:54
○NSns3.virtualhosts.eu2015-04-24 → 2017-07-10 · 4 obs
● 2017-07-10 16:07:44
○ 2026-04-24 14:46:52
○ 2026-04-24 14:46:54
●NSns5.kasserver.com2026-04-24 → 2026-04-24 · 3 obs
● 2026-04-24 14:46:52
● 2026-04-24 14:46:54
●NSns6.kasserver.com2026-04-24 → 2026-04-24 · 3 obs
● 2026-04-24 14:46:52
● 2026-04-24 14:46:54
○MXmail.rt-aktiv.de2015-04-24 → 2017-07-10 · 4 obs
● 2017-07-10 16:07:44
○ 2026-04-24 14:46:52
○ 2026-04-24 14:46:54
●MXw01737a1.kasserver.com2026-04-24 → 2026-04-24 · 3 obs
● 2026-04-24 14:46:52
● 2026-04-24 14:46:54
○A80.83.113.1232015-04-24 → 2017-07-10 · 4 obs
● 2017-07-10 16:07:44
○ 2026-04-24 14:46:52
○ 2026-04-24 14:46:54
●A85.13.164.1152026-04-24 → 2026-04-24 · 3 obs
● 2026-04-24 14:46:52
● 2026-04-24 14:46:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| rt-aktiv.de | ns6.kasserver.com, ns5.kasserver.com | - |
✅ Authoritative Response
Server:85.13.159.101
NS records: ns6.kasserver.com, ns5.kasserver.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rt-aktiv.de (unsigned zone)
⏱️ Timing
Total: 622ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 85.13.164.115 |
| NS | 2 | ns5.kasserver.com, ns6.kasserver.com |
| MX | 1 | w01737a1.kasserver.com (pri: 10) |
| TXT | 1 | v=spf1 a mx include:spf.kasserver.com ~a |
| SOA | 1 | ns5.kasserver.com hostmaster.kasserver.c |
Analysis
Hierarchy
The parent of mail.rt-aktiv.de is rt-aktiv.de.
IP Addresses
rt-aktiv.de points to a single IP address: 85.13.164.115.
Other host names such as w01baba5.kasserver.com, skneiple.de, mail.imot.de, altbrett.kasserver.com and koehler-henne.de share IPs with rt-aktiv.de.
Name Servers
Two name servers ns5.kasserver.com and ns6.kasserver.com handle the delegation for rt-aktiv.de.
rt-aktiv.de shares the same name server setup as other domains, for example walker-consult.com, drymate.de, die-schnecken.de, stresan.biz and berlin-akademie.de.
rt-aktiv.de at least partially shares name servers with other domains, for example bl3000.de, schlenkenet.de, domaininformation.de, keks-koeln.de and master-medieninformatik.de.
these name servers commonly pair with a-dns-service.de, ns3.kas-dns-server.de, ns3.ai-dns.de and ns5.name-server-kas.de.
Host names with one IP number:
ns5.kasserver.com points to 85.13.128.3; ns6.kasserver.com points to 85.13.159.101.
Mail Servers
The w01737a1.kasserver.com mail server handles rt-aktiv.de.
w01737a1.kasserver.com points to a single IP number: 85.13.164.115.