it4sys.ch - dns.ninja
it4sys.ch
| DNSSEC | ⚠️ Not signed | ||||||
| A | 212.162.13.45🇩🇪 PLUSSERVER-ASN1212.162.12.0/22 Symgenius GmbH & Co. KG | ||||||
| PTR | d76.x-mailer.de | ||||||
| NS | ns1.guests.ch ⭐ | ||||||
| A | 212.162.15.181🇩🇪 PLUSSERVER-ASN1212.162.12.0/22 Symgenius GmbH & Co. KG | ||||||
| PTR | ns1.guests.ch | ||||||
| NS | ns2.guests.ch | ||||||
| A | 213.203.243.53🇩🇪 PLUSSERVER-ASN1213.203.240.0/21 PlusServer GmbH Aggregate Hamburg | ||||||
| MX | it4sys.ch ⭐ | ||||||
| A | 212.162.13.45🇩🇪 PLUSSERVER-ASN1212.162.12.0/22 Symgenius GmbH & Co. KG | ||||||
| PTR | d76.x-mailer.de | ||||||
| SOA | ns1.guests.chhostmaster@it4sys.ch 2017-01-30 #0 | ||||||
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 2026-06-12 #30 | ||||||
MX for
it4sys.ch |
Same first word
it4sys.ch |
Similar names
DNS History
4 records (4 active, 0 former)
●MXit4sys.ch2015-05-23 → 2026-06-12 · 2 obs
● 2026-06-12 13:52:28
●A212.162.13.452015-05-23 → 2026-06-12 · 2 obs
● 2026-06-12 13:52:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ch | a.nic.ch, b.nic.ch, d.nic.ch, e.nic.ch... | 10 records |
| it4sys.ch | ns2.guests.ch, ns1.guests.ch | 2 records |
✅ Authoritative Response
Server:212.162.15.181
NS records: ns2.guests.ch, ns1.guests.ch
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for it4sys.ch (unsigned zone)
⏱️ Timing
Total: 2789ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 212.162.13.45 |
| NS | 2 | ns1.guests.ch, ns2.guests.ch |
| MX | 1 | it4sys.ch (pri: 0) |
| SOA | 1 | ns1.guests.ch hostmaster.it4sys.ch |
📌 Glue Records Collected
Total: 12
In-bailiwick: 10 (a.nic.ch, b.nic.ch, d.nic.ch...)
Out-of-bailiwick: 2 (ns2.guests.ch, ns1.guests.ch)
Analysis
Mail Server Role
it4sys.ch handles its own mail, functioning as its own mail server.
IP Addresses
it4sys.ch resolves to just one IP address, 212.162.13.45.
Two other host names, along with d76.x-mailer.de, dermasoft.ch and beat-ernst-basel.ch, also share IP numbers with it4sys.ch.
Name Servers
The NS records for it4sys.ch delegate to ns1.guests.ch and ns2.guests.ch.
it4sys.ch shares its NS records with other domains, for example 3fus.ch, marcellos.sg, aaltech.at and two others.
ns1.guests.ch and ns2.guests.ch each resolve to one IP number: ns1.guests.ch points to 212.162.15.181 and ns2.guests.ch points to 213.203.243.53.
Mail Servers
it4sys.ch is served by just one mail server: it4sys.ch.
it4sys.ch resolves to 212.162.13.45 and no other IP number.