503.ch - robtex.com
503.ch
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 188.34.131.150🇩🇪 Hetzner188.34.128.0/17 HETZNER-DC | ||||||
| PTR | lx47.hoststar.hosting | ||||||
| NS | ns1.hoststar.hosting ⭐ | ||||||
| A | 88.99.214.141🇩🇪 Hetzner88.99.0.0/16 HETZNER-DC | ||||||
| PTR | ns1.hoststar.hosting | ||||||
| NS | ns2.hoststar.hosting | ||||||
| A | 185.48.228.80🇨🇭 netcup-AS185.48.228.0/22 NETCUP-GMBH | ||||||
| PTR | ns2.hoststar.hosting | ||||||
| MX | mail.503.ch ⭐ | ||||||
| A | 188.34.131.150🇩🇪 Hetzner188.34.128.0/17 HETZNER-DC | ||||||
| PTR | lx47.hoststar.hosting | ||||||
| TXT | v=spf1 a:503.ch mx ~all | ||||||
| SOA | ns1.hoststar.hostinghostmaster@503.ch 2026-07-16 #1 | ||||||
ch
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.ch ⭐ | ||||||
| NS | b.nic.ch | ||||||
| NS | d.nic.ch | ||||||
| NS | e.nic.ch | ||||||
| NS | f.nic.ch | ||||||
| SOA | a.nic.chdns-operation@switch.ch 2026-07-18 #11 | ||||||
Subdomains
mail.503.ch |
Same first word
Similar names
DNS History
7 records (4 active, 3 former)
●NSns1.hoststar.hosting2026-03-31 → 2026-07-18 · 3 obs
● 2026-03-31 10:58:34
● 2026-07-18 03:49:30
○NSns10.hoststar.ch2015-08-16 → 2020-01-11 · 4 obs
● 2020-01-11 08:05:44
○ 2026-03-31 10:58:34
○ 2026-07-18 03:49:30
●NSns2.hoststar.hosting2026-03-31 → 2026-07-18 · 3 obs
● 2026-03-31 10:58:34
● 2026-07-18 03:49:30
○NSns9.hoststar.ch2015-08-16 → 2020-01-11 · 4 obs
● 2020-01-11 08:05:44
○ 2026-03-31 10:58:34
○ 2026-07-18 03:49:30
●MXmail.503.ch2015-08-16 → 2026-07-18 · 2 obs
● 2026-07-18 03:49:30
●A188.34.131.1502026-03-31 → 2026-07-18 · 3 obs
● 2026-03-31 10:58:34
● 2026-07-18 03:49:30
○A213.239.231.832015-08-16 → 2020-01-11 · 4 obs
● 2020-01-11 08:05:44
○ 2026-03-31 10:58:34
○ 2026-07-18 03:49:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ch | f.nic.ch, e.nic.ch, b.nic.ch, d.nic.ch... | - |
| 503.ch | ns2.hoststar.hosting, ns1.hoststar.hosting | - |
✅ Authoritative Response
Server:88.99.214.141
NS records: ns2.hoststar.hosting, ns1.hoststar.hosting
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 2826ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 188.34.131.150 |
| NS | 2 | ns1.hoststar.hosting, ns2.hoststar.hosting |
| MX | 1 | mail.503.ch (pri: 10) |
| TXT | 1 | v=spf1 a:503.ch mx ~all |
| SOA | 1 | ns1.hoststar.hosting hostmaster.503.ch |
Analysis
Hierarchy
mail.503.ch is delegated beneath 503.ch.
IP Addresses
503.ch directs to one IP number, which is 188.34.131.150.
Among the host names that share IP numbers with 503.ch are mail.anitra.ch, sarahbuehler.ch, www.giansalis.ch and two others.
Name Servers
The NS records for 503.ch delegate to ns1.hoststar.hosting and ns2.hoststar.hosting.
503.ch has the same name server delegation as a number of other domains, such as simca.ch, linderarchitektur.ch, stubi.ch and two more.
503.ch and other domains like nina-gamsachurdia.ch share at least a portion of their name servers.
These name servers frequently co-occur with the name servers ns191.hoststar.ch and ns192.hoststar.ch.
ns1.hoststar.hosting → 88.99.214.141 and ns2.hoststar.hosting → 185.48.228.80: one IP number per host name.
Mail Servers
503.ch routes its mail through a single mail server, mail.503.ch.
mail.503.ch resolves to 188.34.131.150 and no other IP number.