4-sys.de - robtex.com
4-sys.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 95.173.103.11🇩🇪 SPEEDBONE-AS95.173.96.0/19 Speedbone Internet & Connectivity GmbH | ||||||
| PTR | p11.prosite.de | ||||||
| NS | ns11.prosite.de ⭐ | ||||||
| A | 2a02:8b8:704::3011🇩🇪 SPEEDBONE-AS2a02:8b8::/32 IPv6 | ||||||
| A | 217.13.192.2🇩🇪 SPEEDBONE-AS217.13.192.0/20 SPEEDBONE GmbH | ||||||
| PTR | ns11.prosite.de | ||||||
| NS | ns12.prosite.de | ||||||
| A | 2a02:8b8:704::3012🇩🇪 SPEEDBONE-AS2a02:8b8::/32 IPv6 | ||||||
| A | 217.13.193.2🇩🇪 SPEEDBONE-AS217.13.192.0/20 SPEEDBONE GmbH | ||||||
| PTR | ns12.prosite.de | ||||||
| MX | mx2.worldserver.net ⭐ | ||||||
| MX | mx.worldserver.net(20) | ||||||
| A | 217.13.200.138🇩🇪 SPEEDBONE-AS217.13.192.0/20 SPEEDBONE GmbH | ||||||
| PTR | mx.worldserver.net | ||||||
| SOA | ns11.prosite.dehostmaster@4-sys.de 2026-04-16 #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=1776711337 | ||||||
Same first word
DNS History
5 records (5 active, 0 former)
●NSns11.prosite.de2026-02-24 → 2026-04-20 · 2 obs
● 2026-04-20 19:23:44
●NSns12.prosite.de2026-02-24 → 2026-04-20 · 2 obs
● 2026-04-20 19:23:44
●MXmx.worldserver.net2026-02-24 → 2026-04-20 · 2 obs
● 2026-04-20 19:23:44
●MXmx2.worldserver.net2026-02-24 → 2026-04-20 · 2 obs
● 2026-04-20 19:23:44
●A95.173.103.112026-02-24 → 2026-04-20 · 2 obs
● 2026-04-20 19:23:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| 4-sys.de | ns12.prosite.de, ns11.prosite.de | - |
✅ Authoritative Response
Server:217.13.193.2
NS records: ns12.prosite.de, ns11.prosite.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 4-sys.de (unsigned zone)
⏱️ Timing
Total: 1177ms | 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 |
Analysis
IP Addresses
4-sys.de points to a single IP address: 95.173.103.11.
Other host names such as donkeybridge.de, ns1.schwaebischer-albverein-urbach.de, hlins.de, homeemail.de and ns1.n-portal.org share IPs with 4-sys.de.
Name Servers
Two name servers ns11.prosite.de and ns12.prosite.de handle the delegation for 4-sys.de.
4-sys.de shares the same name server setup as other domains, for example berlin2buy.de, mkgalerie.de, colegio-luterano.com, service-experte.de and starmagic.de.
4-sys.de at least partially shares name servers with other domains, for example tasty-deals.de, 1-2-domain.de, isobit.de, bertel.de and dardat.de.
These name servers are often used together with ns11.worldserver.net and ns12.worldserver.net.
Host names with two IP numbers:
ns11.prosite.de points to 2a02:8b8:704::3011 and 217.13.192.2.
ns12.prosite.de points to 2a02:8b8:704::3012 and 217.13.193.2.
Mail Servers
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, including epaleuropalette.de, entspannungs-trainer.de, walter-app.com, prima-service.de and pgilles.de.
4-sys.de shares at least partially some mail servers with other domains, for instance safro.de, xlog.org, semias.de, falsche-zwanzijer.de and onlinemarketing-association.de.
These mail servers are often used with mx.20.worldserver.net and mx1.worldserver.net.
Single-IP host names: mx.worldserver.net points to 217.13.200.138.