school4u.at - robtex.com
school4u.at
| DNSSEC | ⚠️ Not signed | ||||||
| A | 85.13.155.227🇩🇪 NMM-AS | ||||||
| PTR | dd50630.kasserver.com | ||||||
| NS | ns5.kasserver.com ⭐ | ||||||
| A | 85.13.128.3🇩🇪 NMM-AS | ||||||
| PTR | ns5.kasserver.com | ||||||
| NS | ns6.kasserver.com | ||||||
| A | 85.13.159.101🇩🇪 NMM-AS | ||||||
| PTR | ns6.kasserver.com | ||||||
| MX | w0137c2f.kasserver.com ⭐ | ||||||
| A | 85.13.155.227🇩🇪 NMM-AS | ||||||
| PTR | dd50630.kasserver.com | ||||||
| TXT | v=spf1 a mx include:spf.kasserver.com ~all | ||||||
| SOA | ns5.kasserver.comhostmaster@kasserver.com serial=2512162201 | ||||||
at
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | dns.nic.at ⭐ | ||||||
| NS | d.ns.at 🔒 | ||||||
| NS | j.ns.at 🔒 | ||||||
| NS | n.ns.at 🔒 | ||||||
| NS | ns1.univie.ac.at | ||||||
| NS | ns2.univie.ac.at | ||||||
| NS | r.ns.at 🔒 | ||||||
| NS | u.ns.at 🔒 | ||||||
| SOA | dns.nic.atdomain-admin@univie.ac.at serial=1771290002 | ||||||
Up
mail.school4u.at |
Same first word
Similar names
DNS History
12 records (4 active, 8 former)
○NSdns1.realtime.at2015-10-25 → 2016-04-22 · 5 obs
● 2015-10-25 08:11:48
● 2016-04-22 05:18:36
○ 2017-01-02 16:51:42
○ 2026-02-21 13:24:58
○NSdns2.realtime.at2015-10-25 → 2016-04-22 · 5 obs
● 2015-10-25 08:11:48
● 2016-04-22 05:18:36
○ 2017-01-02 16:51:42
○ 2026-02-21 13:24:58
○NSns1.world4you.at2008-11-22 → 2008-11-22 · 3 obs
○ 2015-10-25 08:11:48
○ 2026-02-21 13:24:58
○NSns2.world4you.at2008-11-22 → 2008-11-22 · 3 obs
○ 2015-10-25 08:11:48
○ 2026-02-21 13:24:58
●NSns5.kasserver.com2017-01-02 → 2026-02-21 · 3 obs
● 2017-01-02 16:51:42
● 2026-02-21 13:24:58
●NSns6.kasserver.com2017-01-02 → 2026-02-21 · 3 obs
● 2017-01-02 16:51:42
● 2026-02-21 13:24:58
○MXmail.school4u.at2008-11-22 → 2016-04-22 · 4 obs
● 2016-04-22 05:18:36
○ 2017-01-02 16:51:42
○ 2026-02-21 13:24:58
●MXw0137c2f.kasserver.com2017-01-02 → 2026-02-21 · 3 obs
● 2017-01-02 16:51:42
● 2026-02-21 13:24:58
○A185.53.177.202015-10-25 → 2016-04-22 · 5 obs
● 2015-10-25 08:11:48
● 2016-04-22 05:18:36
○ 2017-01-02 16:51:42
○ 2026-02-21 13:24:58
○A81.19.145.542008-11-22 → 2008-11-22 · 3 obs
○ 2015-10-25 08:11:48
○ 2026-02-21 13:24:58
○A85.13.154.1402017-01-02 → 2017-01-02 · 4 obs
● 2017-01-02 16:51:42
○ 2018-06-09 21:33:12
○ 2026-02-21 13:24:58
●A85.13.155.2272018-06-09 → 2026-02-21 · 3 obs
● 2018-06-09 21:33:12
● 2026-02-21 13:24:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| school4u.at | ns5.kasserver.com, ns6.kasserver.com | - |
✅ Authoritative Response
Server: 85.13.128.3
NS records: ns5.kasserver.com, ns6.kasserver.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for school4u.at (unsigned zone)
⏱️ Timing
Total: 309ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 85.13.155.227 |
| NS | 2 | ns5.kasserver.com, ns6.kasserver.com |
| MX | 1 | w0137c2f.kasserver.com (pri: 10) |
| TXT | 1 | v=spf1 a mx include:spf.kasserver.com ~a |
| SOA | 1 | ns5.kasserver.com hostmaster.kasserver.c |
AI analysis
school4u.at is the parent of mail.school4u.at.
school4u.at resolves to one IP number: 85.13.155.227.
other host names including climair.mobi, w0121cbf.kasserver.com, paystation.de, bounci.de and mail.tovi-records.com share IP numbers with school4u.at.
school4u.at is delegated to two name servers ns5.kasserver.com and ns6.kasserver.com.
school4u.at shares the same name server setup as other domains, for instance mflow.de, gramm-web.de, katja-schmidt.net, minicarmetzingen.com and undmehr.info.
school4u.at at least partially shares name servers with other domains, for instance eurofoto.de, reiterhof-ostsee.de, royal-taxi.de, yred.de and pr-junioren.de.
these name servers are often used together 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
school4u.at is handled by a single mail server, w0137c2f.kasserver.com.
school4u.at shares the same mail server setup as other domains, for instance go-express.at, unserdaheim.at, finanzierung.or.at, diemorgenpost.com and finanzonline.net.
w0137c2f.kasserver.com resolves to IP 85.13.155.227.