instruct.ch - dns.ninja
instruct.ch
| DNSSEC | ⚠️ Not signed | ||||||
| A | 62.2.143.184🇨🇭 SUNRISE62.2.128.0/17 CH-SUNRISE sunrise / ex_UPC | ||||||
| PTR | machine3.abc4it.com | ||||||
| NS | ns2.instruct.ch ⭐ ⚠️ Not in parent delegation | ||||||
| A | 62.2.143.184🇨🇭 SUNRISE62.2.128.0/17 CH-SUNRISE sunrise / ex_UPC | ||||||
| PTR | machine3.abc4it.com | ||||||
| NS | dns1.abc4it.ch ⚠️ Not in zone NS records | ||||||
| A | 62.2.143.183🇨🇭 SUNRISE62.2.128.0/17 CH-SUNRISE sunrise / ex_UPC | ||||||
| PTR | machine3.abc4it.com | ||||||
| NS | dns2.abc4it.ch ⚠️ Not in zone NS records | ||||||
| A | 62.2.143.184🇨🇭 SUNRISE62.2.128.0/17 CH-SUNRISE sunrise / ex_UPC | ||||||
| PTR | machine3.abc4it.com | ||||||
| NS | ns1.instruct.ch ⚠️ Not in parent delegation | ||||||
| A | 62.2.143.184🇨🇭 SUNRISE62.2.128.0/17 CH-SUNRISE sunrise / ex_UPC | ||||||
| PTR | machine3.abc4it.com | ||||||
| MX | mail.instruct.ch ⭐ | ||||||
| A | 62.2.143.184🇨🇭 SUNRISE62.2.128.0/17 CH-SUNRISE sunrise / ex_UPC | ||||||
| PTR | machine3.abc4it.com | ||||||
| TXT | v=spf1 +a +mx +a:machine3.abc4it.com -all | ||||||
| SOA | ns2.instruct.chinfo@instruct.ch 2026-06-18 #7 | ||||||
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 2026-07-29 #34 | ||||||
Subdomains
Same first word
Similar names
ctiturns.com |
trustnic.com |
trustinc.org |
structin.com |
sturtinc.com |
cintrust.com |
nistruct.com |
trustinc.biz |
trustinc.jp |
DNS History
8 records (6 active, 2 former)
●NSdns1.abc4it.ch2026-02-19 → 2026-07-29 · 3 obs
● 2026-02-19 16:47:28
● 2026-07-29 15:41:44
●NSdns2.abc4it.ch2026-02-19 → 2026-07-29 · 3 obs
● 2026-02-19 16:47:28
● 2026-07-29 15:41:44
○NSns.instruct.ch2015-06-19 → 2017-08-16 · 4 obs
● 2017-08-16 10:17:24
○ 2026-02-19 16:47:28
○ 2026-07-29 15:41:44
●NSns1.instruct.ch2026-02-19 → 2026-07-29 · 3 obs
● 2026-02-19 16:47:28
● 2026-07-29 15:41:44
●NSns2.instruct.ch2026-02-19 → 2026-07-29 · 3 obs
● 2026-02-19 16:47:28
● 2026-07-29 15:41:44
●MXmail.instruct.ch2015-06-19 → 2026-07-29 · 2 obs
● 2026-07-29 15:41:44
○A62.2.143.1832015-06-19 → 2017-08-16 · 4 obs
● 2017-08-16 10:17:24
○ 2026-02-19 16:47:28
○ 2026-07-29 15:41:44
●A62.2.143.1842026-02-19 → 2026-07-29 · 3 obs
● 2026-02-19 16:47:28
● 2026-07-29 15:41:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ch | b.nic.ch, e.nic.ch, a.nic.ch, d.nic.ch... | - |
| instruct.ch | dns1.abc4it.ch, dns2.abc4it.ch | 2 records |
✅ Authoritative Response
Server:62.2.143.183
NS records: dns1.abc4it.ch, dns2.abc4it.ch
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for instruct.ch (unsigned zone)
⏱️ Timing
Total: 536ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 62.2.143.184 |
| NS | 2 | ns1.instruct.ch, ns2.instruct.ch |
| MX | 1 | mail.instruct.ch (pri: 10) |
| TXT | 1 | v=spf1 +a +mx +a:machine3.abc4it.com -al |
| SOA | 1 | ns2.instruct.ch info.instruct.ch |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (dns2.abc4it.ch, dns1.abc4it.ch)
Analysis
Hierarchy
mail.instruct.ch, ns2.instruct.ch, www.instruct.ch and ns1.instruct.ch each fall under the parent domain instruct.ch.
IP Addresses
instruct.ch directs to one IP number, which is 62.2.143.184.
Among the host names that share IP numbers with instruct.ch are maer.ch, machine3.abc4it.com, alpinrecht.ch and two others.
Name Servers
The domain instruct.ch is delegated to these four name servers: dns1.abc4it.ch, dns2.abc4it.ch, ns1.instruct.ch and ns2.instruct.ch.
instruct.ch partially shares its NS delegation with several other domains, including abc4it.ch, soundservicecenter.ch, alpinexperte.ch and two others.
In DNS configurations, these name servers often share authority with ns1.abc4it.ch, ns2.abc4it.ch, ns1.soundservicecenter.ch and 7 other name servers.
dns1.abc4it.ch points to 62.2.143.183. dns2.abc4it.ch, ns1.instruct.ch and ns2.instruct.ch all point to 62.2.143.184.
dns2.abc4it.ch, ns1.instruct.ch and ns2.instruct.ch all direct to 62.2.143.184.
Mail Servers
instruct.ch routes its mail through a single mail server, mail.instruct.ch.
mail.instruct.ch carries a single IP number, which is 62.2.143.184.