ct-tech.de - dns.ninja

`ct-tech.de`

DNSSEC	⚠️ Not signed
A	89.31.143.90^{🇩🇪 UDAG89.31.143.0/24}
NS	`ns.udag.de` ⭐
		A	2001:8d8:fe:53:217:160:80:253^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns.udag.de`
		A	217.160.80.253^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns.udag.de`
NS	`ns.udag.net`
		A	2607:f1c0:fe:53:185:132:33:253^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`ns.udag.net`
		A	185.132.33.253^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns.udag.net`
NS	`ns.udag.org`
		A	2607:f1c0:fe:53:185:132:34:253^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`ns.udag.org`
		A	185.132.34.253^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns.udag.org`
MX	`mx00.udag.de` ⭐
		A	62.146.106.39^{🇩🇪 IPX-AS1559862.146.104.0/22 NorthC Deutschland GmbH}
			PTR	`mx00.udag.de`
MX	`mx01.udag.de`⁽²⁰⁾
		A	62.146.106.40^{🇩🇪 IPX-AS1559862.146.104.0/22 NorthC Deutschland GmbH}
			PTR	`mx01.udag.de`
TXT	`v=spf1 include:_smtp.udag.de ~all`
SOA	`ns.udag.de`hostmaster@united-domains.de 2024-07-24 #15

`de`

	DNSSEC	🔒 Signed (DS record present)
	NS	`f.nic.de` ⭐
	NS	`a.nic.de`
	NS	`l.de.net` ⚠️ Not in parent delegation
	NS	`n.de.net` ⚠️ Not in parent delegation
	NS	`s.de.net` ⚠️ Not in parent delegation
	NS	`z.nic.de`
	SOA	`f.nic.de`dns-operations@denic.de serial=1783960081

WOT: SAFE (68/100)

Subdomains

mail.ct-tech.de

linux3.ct-tech.de

linux1.ct-tech.de

Same first word

ct-tech.biz

ct-tech.tw

ct-tech.de

ct-tech.ru

ct-tech.cn

ct-tech.net

Similar names

tc-tech.de

tc-tech.com.vn

tc-tech.tw

tc-tech.com

the-ctc.uk

DNS History

11 records (6 active, 5 former)

○NSdocks14.rzone.de2015-06-21 → 2017-01-03 · 4 obs

● 2015-06-21 10:39:12
● 2017-01-03 18:44:34
○ 2026-03-08 20:50:40
○ 2026-07-13 16:29:56

●NSns.udag.de2026-03-08 → 2026-07-13 · 3 obs

○ 2017-01-03 18:44:34
● 2026-03-08 20:50:40
● 2026-07-13 16:29:56

●NSns.udag.net2026-03-08 → 2026-07-13 · 3 obs

○ 2017-01-03 18:44:34
● 2026-03-08 20:50:40
● 2026-07-13 16:29:56

●NSns.udag.org2026-03-08 → 2026-07-13 · 3 obs

○ 2017-01-03 18:44:34
● 2026-03-08 20:50:40
● 2026-07-13 16:29:56

○NSshades13.rzone.de2015-06-21 → 2017-01-03 · 4 obs

● 2015-06-21 10:39:12
● 2017-01-03 18:44:34
○ 2026-03-08 20:50:40
○ 2026-07-13 16:29:56

●MXmx00.udag.de2026-03-08 → 2026-07-13 · 3 obs

○ 2017-01-03 18:44:34
● 2026-03-08 20:50:40
● 2026-07-13 16:29:56

●MXmx01.udag.de2026-03-08 → 2026-07-13 · 3 obs

○ 2017-01-03 18:44:34
● 2026-03-08 20:50:40
● 2026-07-13 16:29:56

○MXsmtpin.rzone.de2015-06-21 → 2017-01-03 · 4 obs

● 2015-06-21 10:39:12
● 2017-01-03 18:44:34
○ 2026-03-08 20:50:40
○ 2026-07-13 16:29:56

○A2a01:238:20a:202:1074::2015-06-21 → 2017-01-03 · 4 obs

● 2015-06-21 10:39:12
● 2017-01-03 18:44:34
○ 2026-03-08 20:50:40
○ 2026-07-13 16:29:56

○A81.169.145.742015-06-21 → 2017-01-03 · 4 obs

● 2015-06-21 10:39:12
● 2017-01-03 18:44:34
○ 2026-03-08 20:50:40
○ 2026-07-13 16:29:56

●A89.31.143.902026-03-08 → 2026-07-13 · 3 obs

○ 2017-01-03 18:44:34
● 2026-03-08 20:50:40
● 2026-07-13 16:29:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
ct-tech.de	ns.udag.de, ns.udag.net, ns.udag.org	2 records

✅ Authoritative Response

Server:185.132.34.253

NS records: ns.udag.de, ns.udag.net, ns.udag.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ct-tech.de (unsigned zone)

⏱️ Timing

Total: 688ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`89.31.143.90`
NS	3	`ns.udag.net, ns.udag.org...`
MX	2	`mx00.udag.de (pri: 10), mx01.udag.de (pri: 20)`
TXT	1	`v=spf1 include:_smtp.udag.de ~all`
SOA	1	`ns.udag.de hostmaster.united-domains.de`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns.udag.de, ns.udag.de)

Analysis

Hierarchy

The domain ct-tech.de is parent to mail.ct-tech.de, linux3.ct-tech.de and linux1.ct-tech.de.

IP Addresses

ct-tech.de has exactly one IP address — 89.31.143.90.

taschenascher.eu, blaupunktalarm.nl, gesapost.com plus two other host names have IP numbers in common with ct-tech.de.

Name Servers

ct-tech.de carries NS records delegating to ns.udag.de, ns.udag.net and ns.udag.org.

At least some of ct-tech.de's name servers are shared with other domains, for example ecamper-mieten.de, soschildrensvillages.cn, garg.de and two more.

ns.udag.de, ns.udag.net and ns.udag.org are three hostnames that each resolve to a pair of IP addresses: ns.udag.de to 217.160.80.253 and 2001:8d8:fe:53:217:160:80:253, ns.udag.net to 185.132.33.253 and 2607:f1c0:fe:53:185:132:33:253, and ns.udag.org to 185.132.34.253 and 2607:f1c0:fe:53:185:132:34:253.

Mail Servers

ct-tech.de uses two mail servers, mx00.udag.de and mx01.udag.de.

The mail server setup of ct-tech.de matches that of other domains such as dalmi.eu, audiocolours.de, modolation.de and two others.

ct-tech.de overlaps on mail servers with certain other domains, wunschkennzeichen-reservieren.jetzt among them.

It is common to find these mail servers used together with the mail servers smx00.udag.de and smx01.udag.de.

Each of mx00.udag.de and mx01.udag.de has one IP address: mx00.udag.de uses 62.146.106.39 and mx01.udag.de uses 62.146.106.40.