opensource.ch - dns.ninja

`opensource.ch`

DNSSEC	⚠️ Not signed
A	2a01:ab20:0:4::28^{🇨🇭 CYON2a01:ab20::/32}
		PTR	`s019.cyon.net`
A	149.126.4.28^{🇨🇭 CYON149.126.0.0/21 cyon GmbH}
NS	`ns1.cyon.ch` ⭐
		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`
		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`
MX	`mail.opensource.ch` ⭐
		A	2a01:ab20:0:4::28^{🇨🇭 CYON2a01:ab20::/32}
			PTR	`s019.cyon.net`
		A	149.126.4.28^{🇨🇭 CYON149.126.0.0/21 cyon GmbH}
			PTR	`s019.cyon.net`
TXT	`v=spf1 include:spf.protection.cyon.net -all`
SOA	`ns1.cyon.ch`server@cyon.ch 2021-08-13 #2

`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 2026-06-17 #24

Subdomains

www.opensource.ch

mail.opensource.ch

Same first word

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Similar names

DNS History

9 records (5 active, 4 former)

○NSns.second-ns.com2015-08-01 → 2017-06-03 · 4 obs

● 2015-08-01 08:07:38
● 2017-06-03 16:22:38
○ 2026-02-28 22:49:00
○ 2026-06-17 10:48:20

●NSns1.cyon.ch2026-02-28 → 2026-06-17 · 3 obs

○ 2017-06-03 16:22:38
● 2026-02-28 22:49:00
● 2026-06-17 10:48:20

○NSns1.your-server.de2015-08-01 → 2017-06-03 · 4 obs

● 2015-08-01 08:07:38
● 2017-06-03 16:22:38
○ 2026-02-28 22:49:00
○ 2026-06-17 10:48:20

●NSns2.cyon.ch2026-02-28 → 2026-06-17 · 3 obs

○ 2017-06-03 16:22:38
● 2026-02-28 22:49:00
● 2026-06-17 10:48:20

○NSns3.second-ns.de2015-08-01 → 2017-06-03 · 4 obs

● 2015-08-01 08:07:38
● 2017-06-03 16:22:38
○ 2026-02-28 22:49:00
○ 2026-06-17 10:48:20

●MXmail.opensource.ch2015-08-01 → 2026-06-17 · 12 obs

● 2015-08-01 08:07:38
● 2026-03-18 11:23:52
○ 2026-04-05 02:27:16
● 2026-04-07 04:45:06
○ 2026-04-13 14:17:54
● 2026-04-14 23:29:02
○ 2026-04-15 16:46:08
● 2026-04-18 10:23:40
● 2026-04-19 04:25:28
○ 2026-05-13 01:15:54
● 2026-06-14 06:30:46
● 2026-06-17 10:48:20

●A149.126.4.282026-02-28 → 2026-06-17 · 13 obs

○ 2017-06-03 16:22:38
● 2026-02-28 22:49:00
● 2026-03-18 11:23:52
○ 2026-04-05 02:27:16
● 2026-04-07 04:45:06
○ 2026-04-13 14:17:54
● 2026-04-14 23:29:02
○ 2026-04-15 16:46:08
● 2026-04-18 10:23:40
● 2026-04-19 04:25:28
○ 2026-05-13 01:15:54
● 2026-06-14 06:30:46
● 2026-06-17 10:48:20

●A2a01:ab20:0:4::282026-02-28 → 2026-06-17 · 13 obs

○A78.46.4.1712015-08-01 → 2017-06-03 · 4 obs

● 2015-08-01 08:07:38
● 2017-06-03 16:22:38
○ 2026-02-28 22:49:00
○ 2026-06-17 10:48:20

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:91.206.24.2

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 650ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`149.126.4.28`
AAAA	1	`2a01:ab20:0:4::28`
NS	2	`ns1.cyon.ch, ns2.cyon.ch`
MX	1	`mail.opensource.ch (pri: 0)`
TXT	1	`v=spf1 include:spf.protection.cyon.net -`
SOA	1	`ns1.cyon.ch server.cyon.ch`

📌 Glue Records Collected

Total: 4

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

Analysis

Hierarchy

www.opensource.ch and mail.opensource.ch each fall under opensource.ch as their parent domain.

IP Addresses

opensource.ch has two IP addresses: 149.126.4.28 and 2a01:ab20:0:4::28

Two other host names, along with devigier.ch, audiopool.net and mail.acten.com, also share IP numbers with opensource.ch.

Name Servers

Two name servers handle the delegation for opensource.ch: ns1.cyon.ch and ns2.cyon.ch.

opensource.ch shares its NS records with other domains, for example soliswiss.ch, salessolution.ch, urzeit.org and two others.

ns1.cyon.ch and ns2.cyon.ch both carry two IP addresses. The A records for ns1.cyon.ch are 185.174.216.2 and 2a01:ab20:0:185::2; the A records for ns2.cyon.ch are 91.206.24.2 and 2001:67c:234::2.

Mail Servers

The sole mail server for opensource.ch is mail.opensource.ch.

mail.opensource.ch carries two IP numbers: 149.126.4.28 and 2a01:ab20:0:4::28.