instruct-ag.com - robtex.com
instruct-ag.com
| 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-ag.com ⭐ ⚠️ 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-ag.com ⚠️ 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-ag.com ⭐ | ||||||
| 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-ag.cominfo@instruct.ch 2026-04-19 #6 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1777082726 | ||||||
Subdomains
Same first word
instruct-ag.com |
DNS History
9 records (6 active, 3 former)
●NSdns1.abc4it.ch2026-02-15 → 2026-04-25 · 3 obs
● 2026-02-15 09:13:04
● 2026-04-25 02:16:06
●NSdns2.abc4it.ch2026-02-15 → 2026-04-25 · 3 obs
● 2026-02-15 09:13:04
● 2026-04-25 02:16:06
○NSns.instruct-ag.com2015-07-14 → 2018-10-25 · 4 obs
● 2018-10-25 20:05:38
○ 2026-02-15 09:13:04
○ 2026-04-25 02:16:06
●NSns1.instruct-ag.com2026-02-15 → 2026-04-25 · 3 obs
● 2026-02-15 09:13:04
● 2026-04-25 02:16:06
●NSns2.instruct-ag.com2026-02-15 → 2026-04-25 · 3 obs
● 2026-02-15 09:13:04
● 2026-04-25 02:16:06
●MXmail.instruct-ag.com2018-10-25 → 2026-04-25 · 3 obs
● 2018-10-25 20:05:38
● 2026-04-25 02:16:06
○MXservice.instruct-ag.com2015-07-14 → 2017-03-14 · 4 obs
● 2017-03-14 18:34:50
○ 2018-10-25 20:05:38
○ 2026-04-25 02:16:06
○A62.2.143.1832015-07-14 → 2018-10-25 · 4 obs
● 2018-10-25 20:05:38
○ 2026-02-15 09:13:04
○ 2026-04-25 02:16:06
●A62.2.143.1842026-02-15 → 2026-04-25 · 3 obs
● 2026-02-15 09:13:04
● 2026-04-25 02:16:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| instruct-ag.com | dns1.abc4it.ch, dns2.abc4it.ch | - |
✅ Authoritative Response
Server:62.2.143.184
NS records: dns1.abc4it.ch, dns2.abc4it.ch
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for instruct-ag.com (unsigned zone)
⏱️ Timing
Total: 787ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 62.2.143.184 |
| NS | 2 | ns1.instruct-ag.com, ns2.instruct-ag.com |
| MX | 1 | mail.instruct-ag.com (pri: 10) |
| TXT | 1 | v=spf1 +a +mx +a:machine3.abc4it.com -al |
| SOA | 1 | ns2.instruct-ag.com info.instruct.ch |
Analysis
Hierarchy
The parent of mail.instruct-ag.com, ns2.instruct-ag.com and ns1.instruct-ag.com is instruct-ag.com.
IP Addresses
instruct-ag.com points to an IP address: 62.2.143.184.
other host names include ns1.maer.ch, bogert.hu, mail.schmuckli.com, abc4it.ch and ns1.alpinrecht.ch; they share IP numbers with instruct-ag.com.
Name Servers
instruct-ag.com delegates to four name servers: dns1.abc4it.ch, dns2.abc4it.ch, ns1.instruct-ag.com and ns2.instruct-ag.com.
instruct-ag.com at least partially shares name servers with other domains, for instance maer.ch, alpinrecht.ch, boulevardhorburg.ch, perasenergy.com and schmuckli.com.
these name servers are commonly used with ns2.maer.ch, ns2.alpinrecht.ch, ns1.boulevardhorburg.ch, ns2.boulevardhorburg.ch, ns1.perasenergy.com, ns2.perasenergy.com, ns1.schmuckli.com, ns2.schmuckli.com, ns1.dinello.ch and ns2.dinello.ch.
Host names with one IP:
dns1.abc4it.ch points to: 62.2.143.183.
dns2.abc4it.ch points to: 62.2.143.184.
ns1.instruct-ag.com points to: 62.2.143.184.
ns2.instruct-ag.com points to: 62.2.143.184.
Host names pointing to 62.2.143.184: dns2.abc4it.ch, ns1.instruct-ag.com and ns2.instruct-ag.com.
Mail Servers
instruct-ag.com is handled by a single mail server, mail.instruct-ag.com.
The host name mail.instruct-ag.com points to IP 62.2.143.184.