`open.ch`

DNSSEC	🔒 Signed (DS record present)
A	162.159.135.42^Cloudflare
NS	`ns-cloud-c1.googledomains.com` ⭐
		A	2001:4860:4802:32::6c^{🇺🇸 Google}
			PTR	`ns-cloud-c1.googledomains.com`
		A	216.239.32.108^{🇺🇸 Google}
			PTR	`ns-cloud-c1.googledomains.com`
NS	`ns-cloud-c2.googledomains.com`
		A	2001:4860:4802:34::6c^{🇺🇸 Google}
			PTR	`ns-cloud-c2.googledomains.com`
		A	216.239.34.108^{🇺🇸 Google}
			PTR	`ns-cloud-c2.googledomains.com`
NS	`ns-cloud-c3.googledomains.com`
		A	2001:4860:4802:36::6c^{🇺🇸 Google}
			PTR	`ns-cloud-c3.googledomains.com`
		A	216.239.36.108^{🇺🇸 Google}
			PTR	`ns-cloud-c3.googledomains.com`
NS	`ns-cloud-c4.googledomains.com`
		A	2001:4860:4802:38::6c^{🇺🇸 Google}
			PTR	`ns-cloud-c4.googledomains.com`
		A	216.239.38.108^{🇺🇸 Google}
			PTR	`ns-cloud-c4.googledomains.com`
MX	`mx1.open.ch` ⭐ 🔒
		A	213.156.227.108^{🇨🇭 OPENSYSTEMS-AS}
			PTR	`mx1.open.ch`
MX	`mx2.open.ch` ⭐ 🔒
		A	213.156.239.108^{🇨🇭 OPENSYSTEMS-AS}
			PTR	`mx2.open.ch`
TXT	`v=spf1 mx -all`
TXT	`drift-domain-verification=eba926c767b4eba33360efa39b97eb3aca10a38a26c5ae38e0a...`
TXT	`bw=IBPZrYrkw7uE8VJ6LhvxsV6iuQ9RY5BWwOyB8enqPZZq`
TXT	`miro-verification=1516e5a4c7aae66bac49c48c284452b2482e4bd6`
TXT	`GJdSaADvieyGp81N63OEWeMrrOzC2glpwqk4omaLsArBdcXwCqjfKe/pE0R8BULYXbgI9Y/nRXK8G...`
TXT	`MS=ms50577555`
TXT	`atlassian-domain-verification=KVRyN5955WScxEOuVxXKNWLgzvJVVsl/dNvaht4yR3kgar2...`
TXT	`tresorit-verification=sXYewjPQ08HwpSTExDt96yGoJV8Q1qCCXvK2GNmL3hU`
TXT	`nq43175trmb6k001jh0q93y4ww2gnl9z`
TXT	`apple-domain-verification=ZAjijh3kX4zM3cAn`
TXT	`swisssign-check=L2aqXSyoFI4A6dBe0Z_iqUlmqY0`
TXT	`Foxit-domain-verification=34bbb1a1b366260e977fdde938b90040`
TXT	`infoblox-domain-mastery=945eafcb5cd89eabf5f510d8a0bd5d7db71043bfcd01c4b82b6ba...`
TXT	`_hiy4u2uj8w4cwdn1sthm54izfkwwkaz`
TXT	`security_contact=mailto:security@open-systems.com`
TXT	`google-site-verification=twlPlQTi19t1s7_WIn6iuSWoCOwiVcHrCSNiPoBLa7w`
TXT	`docusign=9707b0ea-0e27-4e12-9417-60d0f932e902`
TXT	`196fklqf1l772vzd8jc0xsyjbxryrn6z`
TXT	`figma-domain-verification=4e3df364a7569c66b5a52918bbc00ebac25ecb8602e8c0aede0...`
TXT	`kv7bn325h4ffrzq8ylw9nxb4mgrsd1zn`
SOA	`ns-cloud-c1.googledomains.com`cloud-dns-hostmaster@google.com serial=1

`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 2026-02-17 #2

🔒 HSTS Preload (+subdomains)
WOT: SAFE (62/100)
📈 Tranco rank: #99,365

Up

mx501.open.ch

asa-f150-main.open.ch

asa-tix-main.open.ch

adns3.open.ch

mx1.open.ch

drop.open.ch

control.open.ch

www.open.ch

sns1.open.ch

terra.open.ch

adns1.open.ch

ns2.open.ch

aqua.open.ch

mail1.open.ch

liar.open.ch

ns1.open.ch

adns2.open.ch

agw-it-waf-prod-chn-002.open.ch

mx2.open.ch

mail9.open.ch

mail2.open.ch

molokini.open.ch

sns3.open.ch

mx502.open.ch

Same first word

open.gripe

open.lighting

open.mp

open.az

open.md

open.sg

open.ha.cn

open.gov.sg

open.edu

open.k12.or.us

open.mk.ua

open.zone

open.democrat

open.bio

open.ma

open.site

open.com.ua

open.ch

open.store

open.co.uk

open.solutions

open.hr

open.gl

open.tv

open.reisen

open.co.th

open.gr

open.ua

open.codes

open.toscana.it

open.media

open.bike

open.homes

open.restaurant

open.com.pl

open.imb.br

open.mine.nu

open.group

open.fyi

open.to

open.lutsk.ua

open.ax

open.email

open.com.co

open.al

open.la

open.com.do

open.money

open.ac.cy

open.edu.pl

open.ac.uk

open.rv.ua

open.cc.ua

open.gov.ru

open.run

open.cl

open.church

open.capital

open.es

open.com.ar

open.international

open.ru

open.dk

open.studio

open.gifts

open.coop

open.cash

open.org

open.edu.cn

open.hosting

open.qa

open.ac.rs

open.ngo

open.dev

open.tube

open.systems

open

open.kg

open.law

open.plumbing

open.africa

open.bet

open.fi

open.network

open.ca

open.com.tr

open.ed.jp

open.university

open.support

open.contractors

open.events

open.lg.ua

open.online

open.srv.br

open.org.uk

open.aero

open.net.tr

open.management

open.team

open.cz

Similar names

open.ro

open.com.py

onep.com.tr

open.audio

open.se

onep.ch

open.boutique

nepo.lt

epno.com.br

onpe.gouv.fr

open.golf

pnoe.gr

onpe.gob.pe

open.cat

peno.it

open.co.ua

epon.de

poen.be

open.ai

epon.me

nope.ch

open.co.at

nope.cz

open.com

nope.biz

open.wtf

open.enterprises

neop.de

nepo.ch

noep.at

pone.in

open.ddnsking.com

open.my

peon.ru

open.directory

pone.jp

open.auto

nepo.sk

onep.nl

open.us.org

open.fr

epno.org

opne.org

nope.wtf

nope.or.ke

open.video

open.ee

open.us.com

open.com.hk

enpo.net

enpo.org

nope.bz

neop.co.jp

open.com.mx

open.pk

open.ge

peon.cz

open.cards

open.sh

peon.moda

open.fund

open.com.au

open.by

open.at

npoe.nl

nope.com.cn

open.guide

npoe.ru

nepo.com.br

pone.se

enop.ru

open.org.au

open.com.cn

poen.ru

neop.biz

pone.co

open.edu.au

open.fitness

open.mx

open.co.il

onep.ma

peon.com.br

peno.com.ua

open.net.co

nope.cn

open.technology

epon.ro

enop.hu

open.cm

neop.jp

enpo.cn

open.no

nepo.it

onep.info

noep.net

open.today

peno.be

epon.net

open.global

opne.ws

DNS History

18 records (7 active, 11 former)

○NSadns1.open.ch2015-09-03 → 2021-09-16 · 4 obs

● 2015-09-03 00:47:20
● 2021-09-16 18:31:22
○ 2026-02-15 12:11:04
○ 2026-02-23 01:19:00

○NSadns2.open.ch2015-09-03 → 2021-09-16 · 4 obs

● 2015-09-03 00:47:20
● 2021-09-16 18:31:22
○ 2026-02-15 12:11:04
○ 2026-02-23 01:19:00

○NSadns3.open.ch2015-09-03 → 2021-09-16 · 4 obs

● 2015-09-03 00:47:20
● 2021-09-16 18:31:22
○ 2026-02-15 12:11:04
○ 2026-02-23 01:19:00

●NSns-cloud-c1.googledomains.com2026-02-15 → 2026-02-23 · 3 obs

○ 2021-09-16 18:31:22
● 2026-02-15 12:11:04
● 2026-02-23 01:19:00

●NSns-cloud-c2.googledomains.com2026-02-15 → 2026-02-23 · 3 obs

○ 2021-09-16 18:31:22
● 2026-02-15 12:11:04
● 2026-02-23 01:19:00

●NSns-cloud-c3.googledomains.com2026-02-15 → 2026-02-23 · 3 obs

○ 2021-09-16 18:31:22
● 2026-02-15 12:11:04
● 2026-02-23 01:19:00

●NSns-cloud-c4.googledomains.com2026-02-15 → 2026-02-23 · 3 obs

○ 2021-09-16 18:31:22
● 2026-02-15 12:11:04
● 2026-02-23 01:19:00

○NSns1.open.ch2015-09-03 → 2021-09-16 · 4 obs

● 2015-09-03 00:47:20
● 2021-09-16 18:31:22
○ 2026-02-15 12:11:04
○ 2026-02-23 01:19:00

○NSns2.open.ch2015-09-03 → 2021-09-16 · 4 obs

● 2015-09-03 00:47:20
● 2021-09-16 18:31:22
○ 2026-02-15 12:11:04
○ 2026-02-23 01:19:00

●MXmx1.open.ch2015-09-03 → 2026-02-23 · 2 obs

● 2015-09-03 00:47:20
● 2026-02-23 01:19:00

●MXmx2.open.ch2015-09-03 → 2026-02-23 · 2 obs

● 2015-09-03 00:47:20
● 2026-02-23 01:19:00

●A162.159.135.422026-02-15 → 2026-02-23 · 3 obs

○ 2021-09-16 18:31:22
● 2026-02-15 12:11:04
● 2026-02-23 01:19:00

○A213.156.227.1242016-04-16 → 2016-05-21 · 5 obs

○ 2016-04-04 04:27:28
● 2016-04-16 19:30:50
● 2016-05-21 22:02:42
○ 2016-05-29 12:48:44
○ 2026-02-23 01:19:00

○A213.156.239.1142017-09-20 → 2019-02-04 · 5 obs

○ 2017-09-16 11:24:04
● 2017-09-20 02:50:06
● 2019-02-04 10:31:42
○ 2020-12-12 18:35:48
○ 2026-02-23 01:19:00

○A213.156.239.1162015-09-03 → 2017-09-16 · 8 obs

● 2015-09-03 00:47:20
● 2016-04-04 04:27:28
○ 2016-04-16 19:30:50
○ 2016-05-21 22:02:42
● 2016-05-29 12:48:44
● 2017-09-16 11:24:04
○ 2017-09-20 02:50:06
○ 2026-02-23 01:19:00

○A2a00:db0:6:a08::42015-09-03 → 2016-05-21 · 4 obs

● 2015-09-03 00:47:20
● 2016-05-21 22:02:42
○ 2016-05-29 12:48:44
○ 2026-02-23 01:19:00

○A2a00:db0:8:a08::42015-09-03 → 2019-02-04 · 8 obs

● 2015-09-03 00:47:20
● 2016-04-04 04:27:28
○ 2016-04-16 19:30:50
○ 2016-05-21 22:02:42
● 2016-05-29 12:48:44
● 2019-02-04 10:31:42
○ 2020-12-12 18:35:48
○ 2026-02-23 01:19:00

○A35.203.181.442020-12-12 → 2021-09-16 · 5 obs

○ 2019-02-04 10:31:42
● 2020-12-12 18:35:48
● 2021-09-16 18:31:22
○ 2026-02-15 12:11:04
○ 2026-02-23 01:19:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
open.ch	ns-cloud-c3.googledomains.com, ns-cloud-c2.googledomains.com, ns-cloud-c1.googledomains.com, ns-cloud-c4.googledomains.com	-

✅ Authoritative Response

Server: 216.239.32.108

NS records: ns-cloud-c3.googledomains.com, ns-cloud-c2.googledomains.com, ns-cloud-c1.googledomains.com, ns-cloud-c4.googledomains.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for open.ch (unsigned zone)

⏱️ Timing

Total: 198ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`162.159.135.42`
NS	4	`ns-cloud-c1.googledomains.com, ns-cloud-c2.googledomains.com...`
MX	2	`mx2.open.ch (pri: 10), mx1.open.ch (pri: 10)`
TXT	20	`nq43175trmb6k001jh0q93y4ww2gnl9z, bw=IBPZrYrkw7uE8VJ6LhvxsV6iuQ9RY5BWwOyB8...`
SOA	1	`ns-cloud-c1.googledomains.com cloud-dns-`

AI analysis

open.ch is a parent of mx501.open.ch, asa-f150-main.open.ch, asa-tix-main.open.ch, adns3.open.ch, mx1.open.ch and a few other host names.

open.ch resolves to a single IP address: 162.159.135.42.

Other host names including vinestudios.co, quell.com.au, littlebigsteps.org.au, prob3.com and edisononcology.com share IP numbers with open.ch.

open.ch is delegated to four name servers: ns-cloud-c1.googledomains.com, ns-cloud-c2.googledomains.com, ns-cloud-c3.googledomains.com and ns-cloud-c4.googledomains.com.

open.ch at least partially shares name servers with other domains, including hollyfiock.com, yayoigroup.jp, kordablaw.com, brightlightpartners.com and clingen.app.

Hosts with two IP numbers:

Host ns-cloud-c1.googledomains.com points to 2001:4860:4802:32::6c and 216.239.32.108

Host ns-cloud-c2.googledomains.com points to 2001:4860:4802:34::6c and 216.239.34.108

Host ns-cloud-c3.googledomains.com points to 2001:4860:4802:36::6c and 216.239.36.108

Host ns-cloud-c4.googledomains.com points to 2001:4860:4802:38::6c and 216.239.38.108

open.ch is handled by two mail servers: mx1.open.ch and mx2.open.ch.

open.ch shares the same mail server setup as other domains, such as open-systems.com, sqooba.io and opensystems.ch.

Host names with a single IP:

mx1.open.ch points to 213.156.227.108.

mx2.open.ch points to 213.156.239.108.

open.ch - robtex.com

open.ch

ch

Up

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

AI analysis

`open.ch`

`ch`