`ars-cognitionis.ch`

DNSSEC	🔒 Signed (DS record present)
A	80.74.137.2^{🇨🇭 ASN-METANET80.74.128.0/20 METANET AG, Switzerland}
		PTR	`gothicus.ch-meta.net`
NS	`ch.pro.io` ⭐
		A	2a01:64c0:0:5000::19^{🇩🇪 CLOUDPIT2a01:64c0::/32}
			PTR	`ch.pro.io`
		A	109.237.142.19^{🇩🇪 CLOUDPIT109.237.128.0/20}
			PTR	`ch.pro.io`
NS	`nl.pro.io`
		A	2a01:4f8:fff3:66::219^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`nl.pro.io`
		A	176.9.166.219^{🇩🇪 Hetzner176.9.0.0/16 HETZNER-RZ-FKS-BLK4}
			PTR	`nl.pro.io`
NS	`p.dnh.net`
		A	2a02:2b80:101:5000::19^{🇩🇪 CLOUDPIT2a02:2b80:101::/48}
			PTR	`p.dnh.net`
		A	109.237.143.19^{🇩🇪 CLOUDPIT109.237.128.0/20}
			PTR	`p.dnh.net`
MX	`mail.ars-cognitionis.ch` ⭐
		A	80.74.137.2^{🇨🇭 ASN-METANET80.74.128.0/20 METANET AG, Switzerland}
			PTR	`gothicus.ch-meta.net`
SOA	`ch.pro.io`hostmaster@metanet.ch 2021-07-26 #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.ch`dns-operation@switch.ch 2026-04-25 #2

Subdomains

mail.ars-cognitionis.ch

Same first word

ars-cognitionis.ch

DNS History

8 records (5 active, 3 former)

●NSch.pro.io2026-04-25 → 2026-04-25 · 3 obs

○ 2018-08-10 01:15:12
● 2026-04-25 00:00:38
● 2026-04-25 00:00:40

●NSnl.pro.io2026-04-25 → 2026-04-25 · 3 obs

○ 2018-08-10 01:15:12
● 2026-04-25 00:00:38
● 2026-04-25 00:00:40

○NSns.ch-meta.net2018-08-10 → 2018-08-10 · 3 obs

● 2018-08-10 01:15:12
○ 2026-04-25 00:00:38
○ 2026-04-25 00:00:40

○NSns2.ch-meta.net2018-08-10 → 2018-08-10 · 3 obs

● 2018-08-10 01:15:12
○ 2026-04-25 00:00:38
○ 2026-04-25 00:00:40

○NSns3.ch-meta.net2018-08-10 → 2018-08-10 · 3 obs

● 2018-08-10 01:15:12
○ 2026-04-25 00:00:38
○ 2026-04-25 00:00:40

●NSp.dnh.net2026-04-25 → 2026-04-25 · 3 obs

○ 2018-08-10 01:15:12
● 2026-04-25 00:00:38
● 2026-04-25 00:00:40

●MXmail.ars-cognitionis.ch2018-08-10 → 2026-04-25 · 2 obs

● 2018-08-10 01:15:12
● 2026-04-25 00:00:40

●A80.74.137.22018-08-10 → 2026-04-25 · 2 obs

● 2018-08-10 01:15:12
● 2026-04-25 00:00:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	a.nic.ch, e.nic.ch, b.nic.ch, d.nic.ch...	-
ars-cognitionis.ch	p.dnh.net, ch.pro.io, nl.pro.io	-

✅ Authoritative Response

Server:176.9.166.219

NS records: p.dnh.net, ch.pro.io, nl.pro.io

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 984ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`80.74.137.2`
NS	3	`ch.pro.io, nl.pro.io...`
MX	1	`mail.ars-cognitionis.ch (pri: 10)`
SOA	1	`ch.pro.io hostmaster.metanet.ch`

Analysis

Hierarchy

ars-cognitionis.ch is parent of mail.ars-cognitionis.ch.

IP Addresses

ars-cognitionis.ch points to a single IP: 80.74.137.2.

Other host names, for instance texgreen.ch, mail.davebopp.ch, mail.skimbowl.at, peakti.me and mail.biothane.ch share IP numbers with ars-cognitionis.ch.

Name Servers

ars-cognitionis.ch is delegated to three name servers: ch.pro.io, nl.pro.io and p.dnh.net.

ars-cognitionis.ch at least partially shares its name servers with other domains, for instance pressemeldungen.ch, eventwagen.ch, gobox.ch, smdb.ch and steinertreuhand.ch.

Host names with two IP numbers:

ch.pro.io points to: 2a01:64c0:0:5000::19 and 109.237.142.19.

nl.pro.io points to: 2a01:4f8:fff3:66::219 and 176.9.166.219.

p.dnh.net points to: 2a02:2b80:101:5000::19 and 109.237.143.19.

Mail Servers

ars-cognitionis.ch is served by a single mail server, mail.ars-cognitionis.ch.

mail.ars-cognitionis.ch points to IP number 80.74.137.2.

ars-cognitionis.ch - robtex.com