tutorial.ch - dns.ninja
tutorial.ch
| DNSSEC | ⚠️ Not signed | ||||||
| A | 195.34.73.15🇨🇭 Host4all-AS195.34.72.0/23 HOST4ALL-NETWORK1 | ||||||
| PTR | uranus.safe-order.ch | ||||||
| NS | ns1.host4all.net ⭐ | ||||||
| A | 195.34.73.50🇨🇭 Host4all-AS195.34.72.0/23 HOST4ALL-NETWORK1 | ||||||
| PTR | ns1.host4all.net | ||||||
| NS | ns2.host4all.net | ||||||
| A | 5.1.99.201🇨🇭 AlpineDC5.1.96.0/21 SA | ||||||
| PTR | ns2.host4all.net | ||||||
| MX | tutorial.ch ⭐ | ||||||
| A | 195.34.73.15🇨🇭 Host4all-AS195.34.72.0/23 HOST4ALL-NETWORK1 | ||||||
| PTR | uranus.safe-order.ch | ||||||
| SOA | ns1.host4all.netsmorier@host4all.net 2026-06-04 #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 2026-06-09 #11 | ||||||
MX for
tutorial.ch |
Subdomains
mail.tutorial.ch |
Same first word
Similar names
DNS History
7 records (4 active, 3 former)
●NSns1.host4all.net2015-07-31 → 2026-06-09 · 2 obs
● 2026-06-09 04:30:22
○NSns1.safe-order.ch2015-07-31 → 2016-06-18 · 4 obs
● 2016-06-18 03:35:30
○ 2017-02-13 23:56:42
○ 2026-06-09 04:30:22
●NSns2.host4all.net2015-07-31 → 2026-06-09 · 2 obs
● 2026-06-09 04:30:22
○MXmail.tutorial.ch2015-07-31 → 2016-06-18 · 4 obs
● 2016-06-18 03:35:30
○ 2017-02-13 23:56:42
○ 2026-06-09 04:30:22
●MXtutorial.ch2017-02-13 → 2026-06-09 · 3 obs
● 2017-02-13 23:56:42
● 2026-06-09 04:30:22
●A195.34.73.152026-02-17 → 2026-06-09 · 3 obs
● 2026-02-17 21:50:40
● 2026-06-09 04:30:22
○A195.34.73.252015-07-31 → 2017-02-13 · 4 obs
● 2017-02-13 23:56:42
○ 2026-02-17 21:50:40
○ 2026-06-09 04:30:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ch | a.nic.ch, b.nic.ch, d.nic.ch, e.nic.ch... | - |
| tutorial.ch | ns1.host4all.net, ns2.host4all.net | - |
✅ Authoritative Response
Server:195.34.73.50
NS records: ns1.host4all.net, ns2.host4all.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for tutorial.ch (unsigned zone)
⏱️ Timing
Total: 825ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 195.34.73.15 |
| NS | 2 | ns2.host4all.net, ns1.host4all.net |
| MX | 1 | tutorial.ch (pri: 0) |
| SOA | 1 | ns1.host4all.net smorier.host4all.net |
Analysis
Hierarchy
mail.tutorial.ch is a subdomain of tutorial.ch.
Mail Server Role
tutorial.ch handles its own mail, functioning as its own mail server.
IP Addresses
tutorial.ch resolves to just one IP address, 195.34.73.15.
Two other host names, along with b2bhost.ch, uranus.safe-order.ch and qbo.ch, also share IP numbers with tutorial.ch.
Name Servers
tutorial.ch uses two name servers for its delegation: ns1.host4all.net and ns2.host4all.net.
tutorial.ch shares its NS records with other domains, for example topmusic.ch, pixelmix.net, promu.ch and two others.
Both ns1.host4all.net and ns2.host4all.net have a single IP address each — ns1.host4all.net resolves to 195.34.73.50 while ns2.host4all.net resolves to 5.1.99.201.
Mail Servers
tutorial.ch is served by just one mail server: tutorial.ch.
tutorial.ch directs to just one IP number, 195.34.73.15.