concurrent.ch - dns.ninja

`concurrent.ch`

DNSSEC	⚠️ Not signed
A	51.107.58.163^{🇨🇭 Microsoft51.107.0.0/16}
NS	`ns2.webkeeper.ch` ⭐
		A	159.100.254.94^{🇨🇭 exoscale159.100.248.0/21}
			PTR	`ns2.webkeeper.ch`
NS	`ns1.webkeeper.ch`
		A	46.231.204.76^{🇨🇭 ASN-METANET46.231.200.0/21 METANET AG, Switzerland}
			PTR	`ns1.webkeeper.ch`
MX	`concurrent-ch.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::6^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00406.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::9^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db7pr03cu00601.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::f^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db7pr03cu00507.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::d^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as9pr05cu01305.inbound.protection.outlook.com`
		A	52.101.68.8^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-du0pr03cu00100.inbound.protection.outlook.com`
		A	52.101.68.12^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db9pr02cu00204.inbound.protection.outlook.com`
		A	52.101.68.21^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db4pr02cu00205.inbound.protection.outlook.com`
		A	52.101.68.36^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db5pr02cu00104.inbound.protection.outlook.com`
TXT	`google-site-verification=VG476_sFS_NqXKbizRTwn9rWfj3zB80ampPV5LeUnZw`
TXT	`v=spf1 ip4:46.140.67.74 include:spf.protection.outlook.com ~all`
TXT	`stripe-verification=98c9af2ee1dff45467edfedde27292cdb796805421f727cbd52cdf4d7...`
SOA	`ns2.webkeeper.ch`theo\@hasler.concurrent.ch 2026-01-26 #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 2026-07-14 #9

Subdomains

www.concurrent.ch

Same first word

concurrent.ca

concurrent.tech

concurrent.com

concurrent.be

concurrent.co.za

concurrent.ch

concurrent.fr

concurrent.co.uk

concurrent.work

concurrent.net

concurrent.biz

concurrent.org

concurrent.co

concurrent.dk

concurrent.eu

concurrent.jp

Similar names

currentcon.com

truconnecr.com

DNS History

8 records (4 active, 4 former)

○NSns01.vtx.ch2015-06-10 → 2017-08-19 · 4 obs

● 2015-06-10 18:34:24
● 2017-08-19 12:34:10
○ 2026-02-22 10:55:50
○ 2026-07-14 03:21:38

○NSns02.vtx.ch2015-06-10 → 2017-08-19 · 4 obs

● 2015-06-10 18:34:24
● 2017-08-19 12:34:10
○ 2026-02-22 10:55:50
○ 2026-07-14 03:21:38

●NSns1.webkeeper.ch2026-02-22 → 2026-07-14 · 3 obs

○ 2017-08-19 12:34:10
● 2026-02-22 10:55:50
● 2026-07-14 03:21:38

●NSns2.webkeeper.ch2026-02-22 → 2026-07-14 · 3 obs

○ 2017-08-19 12:34:10
● 2026-02-22 10:55:50
● 2026-07-14 03:21:38

●MXconcurrent-ch.mail.protection.outlook.com2016-12-07 → 2026-07-14 · 3 obs

○ 2016-04-11 18:08:08
● 2016-12-07 01:20:26
● 2026-07-14 03:21:38

○MXmx2.vtx.ch2015-06-10 → 2016-04-11 · 4 obs

● 2015-06-10 18:34:24
● 2016-04-11 18:08:08
○ 2016-12-07 01:20:26
○ 2026-07-14 03:21:38

●A51.107.58.1632026-02-22 → 2026-07-14 · 3 obs

○ 2017-08-19 12:34:10
● 2026-02-22 10:55:50
● 2026-07-14 03:21:38

○A91.250.86.2202015-06-10 → 2017-08-19 · 4 obs

● 2015-06-10 18:34:24
● 2017-08-19 12:34:10
○ 2026-02-22 10:55:50
○ 2026-07-14 03:21:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	e.nic.ch, d.nic.ch, a.nic.ch, f.nic.ch...	10 records
concurrent.ch	ns1.webkeeper.ch, ns2.webkeeper.ch	2 records

✅ Authoritative Response

Server:46.231.204.76

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for concurrent.ch (unsigned zone)

⏱️ Timing

Total: 1358ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`51.107.58.163`
NS	2	`ns1.webkeeper.ch, ns2.webkeeper.ch`
MX	1	`concurrent-ch.mail.protection.outlook.co`
TXT	3	`google-site-verification=VG476_sFS_NqXKb, v=spf1 ip4:46.140.67.74 include:spf.prot...`
SOA	1	`ns2.webkeeper.ch theo\.hasler.concurrent`

📌 Glue Records Collected

Total: 12

In-bailiwick: 10 (a.nic.ch, b.nic.ch, d.nic.ch...)

Out-of-bailiwick: 2 (ns2.webkeeper.ch, ns1.webkeeper.ch)

Analysis

Hierarchy

concurrent.ch is the parent zone for www.concurrent.ch.

IP Addresses

concurrent.ch directs to one IP number, which is 51.107.58.163.

Among the host names that share IP numbers with concurrent.ch are isolutions.es, concurrent.biz, displayactive.ch and two others.

Name Servers

concurrent.ch has two authoritative name servers — ns1.webkeeper.ch and ns2.webkeeper.ch.

concurrent.ch has the same name server delegation as a number of other domains, such as uster-agenda.ch, tinohorat.ch, siegmann.ch and two more.

concurrent.ch partially shares its name servers with domains like hyfly.com and altorfer-ag.ch.

ns1.webkeeper.ch resolves to 46.231.204.76. ns2.webkeeper.ch resolves to 159.100.254.94. Both host names point to a single IP number.

Mail Servers

concurrent.ch routes its mail through a single mail server, concurrent-ch.mail.protection.outlook.com.

concurrent-ch.mail.protection.outlook.com directs to 8 IP numbers, including 52.101.68.8, 52.101.68.12 and 52.101.68.21, along with 5 other.