`schuler-it.ch`

DNSSEC	⚠️ Not signed
NS	`ns1.cyon.ch` ⚠️ Not in zone NS records
		A	2a01:ab20:0:185::2^{🇨🇭 CYON2a01:ab20::/32}
		A	185.174.216.2^{🇨🇭 CYON185.174.216.0/22}
			PTR	`ns1.cyon.ch`
NS	`ns2.cyon.ch` ⚠️ Not in zone NS records
		A	2001:67c:234::2^{🇨🇭 CYON2001:67c:234::/48 cyon GmbH}
		A	91.206.24.2^{🇨🇭 CYON91.206.24.0/23 Cyon GmbH}
			PTR	`ns2.cyon.ch`

`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.ch`dns-operation@switch.ch 2026-04-28 #9

Previously MX for

schuler-it.ch

Same first word

schuler-it.ch

schuler-it.de

Similar names

it-schuler.de

DNS History

6 records (2 active, 4 former)

●NSns1.cyon.ch2015-06-09 → 2026-04-28 · 2 obs

● 2015-06-09 03:59:02
● 2026-04-28 02:51:46

●NSns2.cyon.ch2015-06-09 → 2026-04-28 · 2 obs

● 2015-06-09 03:59:02
● 2026-04-28 02:51:46

○MXschuler-it.ch2015-06-09 → 2026-03-30 · 4 obs

● 2015-06-09 03:59:02
● 2026-03-30 08:00:10
○ 2026-04-05 02:27:22
○ 2026-04-28 02:51:46

○A149.126.4.742020-03-16 → 2026-03-30 · 5 obs

○ 2017-04-01 08:24:34
● 2020-03-16 05:10:58
● 2026-03-30 08:00:10
○ 2026-04-05 02:27:22
○ 2026-04-28 02:51:46

○A194.126.200.492015-06-09 → 2017-04-01 · 4 obs

● 2015-06-09 03:59:02
● 2017-04-01 08:24:34
○ 2020-03-16 05:10:58
○ 2026-04-28 02:51:46

○A2a01:ab20:0:4::742026-02-18 → 2026-03-30 · 5 obs

○ 2020-03-16 05:10:58
● 2026-02-18 19:58:26
● 2026-03-30 08:00:10
○ 2026-04-05 02:27:22
○ 2026-04-28 02:51:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	a.nic.ch, b.nic.ch, d.nic.ch, e.nic.ch...	-
schuler-it.ch	ns1.cyon.ch, ns2.cyon.ch	4 records

✅ Authoritative Response

Server:185.174.216.2

NS records: ns1.cyon.ch, ns2.cyon.ch

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 767ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`149.126.4.74`
AAAA	1	`2a01:ab20:0:4::74`
NS	2	`ns2.cyon.ch, ns1.cyon.ch`
MX	1	`schuler-it.ch (pri: 0)`
TXT	1	`v=spf1 +a +mx +ip4:194.126.200.0/24 +ip4`
SOA	1	`ns1.cyon.ch server.cyon.ch`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns2.cyon.ch, ns1.cyon.ch, ns2.cyon.ch...)

Analysis

Name Servers

schuler-it.ch is delegated to two name servers: ns1.cyon.ch and ns2.cyon.ch.

schuler-it.ch uses the same name server setup as other domains, for instance 45degrees.ch, seeds-to-go.cz, eigl.ch, bobbyfischer.ch and silvias.ch.

schuler-it.ch shares name servers with other domains at least partially, for instance mtr.li and capsservice.ch.

these name servers are often used together with the name servers ns3.cyon.ch.

Host names with two IP numbers:

The host ns1.cyon.ch points to 2a01:ab20:0:185::2 and 185.174.216.2.

The host ns2.cyon.ch points to 2001:67c:234::2 and 91.206.24.2.

schuler-it.ch - robtex.com

schuler-it.ch

ch