4-sys.de - robtex.com
4-sys.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 95.173.103.11🇩🇪 SPEEDBONE-AS | ||||||
| PTR | p11.prosite.de | ||||||
| NS | ns11.prosite.de ⭐ 🔒 | ||||||
| A | 2a02:8b8:704::3011🇩🇪 SPEEDBONE-AS | ||||||
| A | 217.13.192.2🇩🇪 SPEEDBONE-AS | ||||||
| PTR | ns11.prosite.de | ||||||
| NS | ns12.prosite.de 🔒 | ||||||
| A | 2a02:8b8:704::3012🇩🇪 SPEEDBONE-AS | ||||||
| A | 217.13.193.2🇩🇪 SPEEDBONE-AS | ||||||
| PTR | ns12.prosite.de | ||||||
| MX | mx2.worldserver.net ⭐ | ||||||
| MX | mx.worldserver.net(20) | ||||||
| A | 217.13.200.138🇩🇪 SPEEDBONE-AS | ||||||
| PTR | mx.worldserver.net | ||||||
| SOA | ns11.prosite.dehostmaster@4-sys.de 2026-02-19 #1 | ||||||
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=1771291602 | ||||||
Same first word
DNS History
5 records (5 active, 0 former)
●NSns11.prosite.de2026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 09:12:32
●NSns12.prosite.de2026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 09:12:32
●MXmx.worldserver.net2026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 09:12:32
●MXmx2.worldserver.net2026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 09:12:32
●A95.173.103.112026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 09:12:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| 4-sys.de | ns11.prosite.de, ns12.prosite.de | - |
✅ Authoritative Response
Server: 217.13.193.2
NS records: ns11.prosite.de, ns12.prosite.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 4-sys.de (unsigned zone)
⏱️ Timing
Total: 1238ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 95.173.103.11 |
| NS | 2 | ns11.prosite.de, ns12.prosite.de |
| MX | 2 | mx.worldserver.net (pri: 10), mx2.worldserver.net (pri: 20) |
| SOA | 1 | ns11.prosite.de hostmaster.4-sys.de |
AI analysis
4-sys.de resolves to one IP number: 95.173.103.11.
other host names including donkeybridge.de, ns1.schwaebischer-albverein-urbach.de, hlins.de, homeemail.de and ns1.n-portal.org share IP numbers with 4-sys.de.
4-sys.de is delegated to two name servers ns11.prosite.de and ns12.prosite.de.
4-sys.de shares the same name server setup as other domains, for instance berlin2buy.de, colegio-luterano.com, service-experte.de, starmagic.de and wernershomepage.de.
4-sys.de shares at least some name servers with other domains, for example tasty-deals.de, isobit.de and rotary-bargteheide.de.
Host names with two IP numbers:
The host name ns11.prosite.de points to 2a02:8b8:704::3011 and 217.13.192.2; the host name ns12.prosite.de points to 2a02:8b8:704::3012 and 217.13.193.2.
Two mail servers handle 4-sys.de: mx2.worldserver.net and mx.worldserver.net.
4-sys.de shares the same mail server setup as other domains, for instance entspannungs-trainer.de, walter-app.com, prima-service.de, pgilles.de and elevation-media.net.
4-sys.de shares some mail servers with other domains, at least partially, for instance xlog.org, falsche-zwanzijer.de, onlinemarketing-association.de, onlineautos24.de and losekurier.de.
These mail servers are commonly used alongside mx.20.worldserver.net and mx1.worldserver.net.
Hostnames with a single IP:
mx.worldserver.net points to 217.13.200.138.