`tec-joint.ch`

DNSSEC	⚠️ Not signed
A	51.96.35.205^{🇨🇭 Amazon51.96.0.0/16 EC2 ZRH prefix}
		PTR	`venus.ctekag.ch`
NS	`4.ctekns.ch` ⭐
		A	2600:9000:5305:db00::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1499.awsdns-59.org`
		A	205.251.197.219^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1499.awsdns-59.org`
NS	`1.ctekns.ch`
		A	2600:9000:5302:2b00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-555.awsdns-05.net`
		A	205.251.194.43^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-555.awsdns-05.net`
NS	`2.ctekns.ch`
		A	2600:9000:5306:a900::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1705.awsdns-21.co.uk`
		A	205.251.198.169^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1705.awsdns-21.co.uk`
NS	`3.ctekns.ch`
		A	2600:9000:5301:300::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-259.awsdns-32.com`
		A	205.251.193.3^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-259.awsdns-32.com`
MX	`tecjoint-ch0i.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca3c::^{🇨🇭 Microsoft2a01:111:f000::/36}
			PTR	`mail-zrap278cu00300.inbound.protection.outlook.com`
		A	2a01:111:f403:ca3c::1^{🇨🇭 Microsoft2a01:111:f000::/36}
			PTR	`mail-zrzp278cu00201.inbound.protection.outlook.com`
		A	2a01:111:f403:ca3c::2^{🇨🇭 Microsoft2a01:111:f000::/36}
			PTR	`mail-zr1p278cu00202.inbound.protection.outlook.com`
		A	2a01:111:f403:ca3e::1^{🇨🇭 Microsoft2a01:111:f000::/36}
			PTR	`mail-gvap278cu00301.inbound.protection.outlook.com`
		A	52.101.185.12^{🇨🇭 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-zrap278cu00304.inbound.protection.outlook.com`
		A	52.101.185.13^{🇨🇭 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-zrzp278cu00205.inbound.protection.outlook.com`
		A	52.101.185.14^{🇨🇭 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-zr1p278cu00206.inbound.protection.outlook.com`
		A	52.101.187.1^{🇨🇭 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-gvap278cu00301.inbound.protection.outlook.com`
TXT	`v=spf1 a mx ip4:212.243.55.4 ip4:212.243.55.2 a:mx.schoop.com a:smtp.schoop.c...`
SOA	`4.ctekns.ch`hostmaster@ctekns.ch 2024-11-24 #7

`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 2026-08-06 #41

Same first word

tec-joint.ch

DNS History

11 records (6 active, 5 former)

●NS1.ctekns.ch2026-07-11 → 2026-08-06 · 3 obs

○ 2020-03-13 01:40:34
● 2026-07-11 11:53:30
● 2026-08-06 18:54:12

●NS2.ctekns.ch2026-07-11 → 2026-08-06 · 3 obs

○ 2020-03-13 01:40:34
● 2026-07-11 11:53:30
● 2026-08-06 18:54:12

●NS3.ctekns.ch2026-07-11 → 2026-08-06 · 3 obs

○ 2020-03-13 01:40:34
● 2026-07-11 11:53:30
● 2026-08-06 18:54:12

●NS4.ctekns.ch2026-07-11 → 2026-08-06 · 3 obs

○ 2020-03-13 01:40:34
● 2026-07-11 11:53:30
● 2026-08-06 18:54:12

○NSns.ch-meta.net2015-08-13 → 2020-03-13 · 4 obs

● 2015-08-13 03:20:54
● 2020-03-13 01:40:34
○ 2026-07-11 11:53:30
○ 2026-08-06 18:54:12

○NSns2.ch-meta.net2015-08-13 → 2020-03-13 · 4 obs

● 2015-08-13 03:20:54
● 2020-03-13 01:40:34
○ 2026-07-11 11:53:30
○ 2026-08-06 18:54:12

○NSns3.ch-meta.net2015-08-13 → 2020-03-13 · 4 obs

● 2015-08-13 03:20:54
● 2020-03-13 01:40:34
○ 2026-07-11 11:53:30
○ 2026-08-06 18:54:12

○MXmail.tec-joint.ch2015-08-13 → 2020-03-13 · 4 obs

● 2015-08-13 03:20:54
● 2020-03-13 01:40:34
○ 2026-07-11 11:53:30
○ 2026-08-06 18:54:12

●MXtecjoint-ch0i.mail.protection.outlook.com2026-07-11 → 2026-08-06 · 3 obs

○ 2020-03-13 01:40:34
● 2026-07-11 11:53:30
● 2026-08-06 18:54:12

●A51.96.35.2052026-07-11 → 2026-08-06 · 3 obs

○ 2020-03-13 01:40:34
● 2026-07-11 11:53:30
● 2026-08-06 18:54:12

○A80.74.158.1002015-08-13 → 2020-03-13 · 4 obs

● 2015-08-13 03:20:54
● 2020-03-13 01:40:34
○ 2026-07-11 11:53:30
○ 2026-08-06 18:54:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	a.nic.ch, b.nic.ch, d.nic.ch, e.nic.ch...	-
tec-joint.ch	4.ctekns.ch, 1.ctekns.ch, 2.ctekns.ch, 3.ctekns.ch	8 records

✅ Authoritative Response

Server:205.251.197.219

NS records: 4.ctekns.ch, 1.ctekns.ch, 2.ctekns.ch, 3.ctekns.ch

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tec-joint.ch (unsigned zone)

⏱️ Timing

Total: 421ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`51.96.35.205`
NS	4	`1.ctekns.ch, 2.ctekns.ch...`
MX	1	`tecjoint-ch0i.mail.protection.outlook.co`
TXT	1	`v=spf1 a mx ip4:212.243.55.4 ip4:212.243`
SOA	1	`4.ctekns.ch hostmaster.ctekns.ch`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (4.ctekns.ch, 3.ctekns.ch, 2.ctekns.ch...)

Analysis

IP Addresses

tec-joint.ch resolves to just one IP address, 51.96.35.205.

Two other host names, along with aparthotel-baden.ch, klimaaktiv.ch and citywettingen.ch, also share IP numbers with tec-joint.ch.

Name Servers

The NS records for tec-joint.ch point to four name servers: 1.ctekns.ch, 2.ctekns.ch, 3.ctekns.ch and 4.ctekns.ch.

tec-joint.ch has at least partial name server overlap with other domains, such as soba-inter.com, sahli.ch, intergrund.ch and two others.

It is common to find these name servers paired with the name servers ns1.ctek.ch, ns2.ctek.ch, ns1.netwings.net and ns2.netwings.net.

1.ctekns.ch, 2.ctekns.ch, 3.ctekns.ch and 4.ctekns.ch all point to exactly two IP numbers each: 1.ctekns.ch → 205.251.194.43 and 2600:9000:5302:2b00::1; 2.ctekns.ch → 205.251.198.169 and 2600:9000:5306:a900::1; 3.ctekns.ch → 205.251.193.3 and 2600:9000:5301:300::1; 4.ctekns.ch → 205.251.197.219 and 2600:9000:5305:db00::1.

Mail Servers

The sole mail server for tec-joint.ch is tecjoint-ch0i.mail.protection.outlook.com.

With 8 IP addresses total, tecjoint-ch0i.mail.protection.outlook.com resolves to 52.101.185.12, 52.101.185.13, 52.101.185.14 and 5 others.

tec-joint.ch - robtex.com

tec-joint.ch

ch

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`tec-joint.ch`

`ch`