`computer-masters.de`

DNSSEC	⚠️ Not signed
A	81.88.34.241^{🇩🇪 CLOUDPIT81.88.32.0/20}
		PTR	`host230.alfahosting-server.de`
NS	`cns1.alfahosting.info` ⭐
		A	2a01:64c0:0:5000::8^{🇩🇪 CLOUDPIT2a01:64c0::/32}
			PTR	`cns1.cloudpit.de`
		A	109.237.142.8^{🇩🇪 CLOUDPIT109.237.128.0/20}
			PTR	`cns1.cloudpit.de`
NS	`cns2.alfahosting.info`
		A	2a01:4f8:2b02:a88::105^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`cns2.cloudpit.com`
		A	148.251.254.105^{🇩🇪 Hetzner148.251.0.0/16 HETZNER-RZ-BLK-ERX2}
			PTR	`cns2.cloudpit.com`
NS	`cns3.alfahosting.info`
		A	2a02:2b80:101:5000::8^{🇩🇪 CLOUDPIT2a02:2b80:101::/48}
			PTR	`cns3.cloudpit.io`
		A	109.237.143.8^{🇩🇪 CLOUDPIT109.237.128.0/20}
			PTR	`cns3.cloudpit.io`
MX	`mx03.secure-mailgate.com` ⭐
		A	46.243.88.174^{🇩🇪 CLOUDPIT46.243.88.0/21}
			PTR	`node03.secure-mailgate.com`
		A	46.243.88.176^{🇩🇪 CLOUDPIT46.243.88.0/21}
			PTR	`node04.secure-mailgate.com`
MX	`mx04.secure-mailgate.com` ⭐
		A	46.243.88.175^{🇩🇪 CLOUDPIT46.243.88.0/21}
			PTR	`node03.secure-mailgate.com`
		A	46.243.88.177^{🇩🇪 CLOUDPIT46.243.88.0/21}
			PTR	`node04.secure-mailgate.com`
SOA	`cns1.alfahosting.info`hostmaster@alfahosting.de 2026-01-23 #1

`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=1786015863

WOT: SAFE (79/100)

Subdomains

mail.computer-masters.de

Same first word

computer-masters.de

DNS History

8 records (6 active, 2 former)

●NScns1.alfahosting.info2015-07-23 → 2026-08-06 · 2 obs

● 2015-07-23 18:42:14
● 2026-08-06 11:37:02

●NScns2.alfahosting.info2015-07-23 → 2026-08-06 · 2 obs

● 2015-07-23 18:42:14
● 2026-08-06 11:37:02

●NScns3.alfahosting.info2015-07-23 → 2026-08-06 · 2 obs

● 2015-07-23 18:42:14
● 2026-08-06 11:37:02

○MXmail.computer-masters.de2015-07-23 → 2017-02-01 · 4 obs

● 2015-07-23 18:42:14
● 2017-02-01 20:13:16
○ 2026-05-12 12:26:16
○ 2026-08-06 11:37:02

●MXmx03.secure-mailgate.com2026-05-12 → 2026-08-06 · 3 obs

○ 2017-02-01 20:13:16
● 2026-05-12 12:26:16
● 2026-08-06 11:37:02

●MXmx04.secure-mailgate.com2026-05-12 → 2026-08-06 · 3 obs

○ 2017-02-01 20:13:16
● 2026-05-12 12:26:16
● 2026-08-06 11:37:02

○A109.237.138.342015-07-23 → 2017-02-01 · 4 obs

● 2015-07-23 18:42:14
● 2017-02-01 20:13:16
○ 2026-05-12 12:26:16
○ 2026-08-06 11:37:02

●A81.88.34.2412026-05-12 → 2026-08-06 · 3 obs

○ 2017-02-01 20:13:16
● 2026-05-12 12:26:16
● 2026-08-06 11:37:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
computer-masters.de	cns3.alfahosting.info, cns2.alfahosting.info, cns1.alfahosting.info	-

✅ Authoritative Response

Server:109.237.143.8

NS records: cns3.alfahosting.info, cns2.alfahosting.info, cns1.alfahosting.info

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for computer-masters.de (unsigned zone)

⏱️ Timing

Total: 1052ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.88.34.241`
NS	3	`cns1.alfahosting.info, cns3.alfahosting.info...`
MX	2	`mx04.secure-mailgate.com (pri: 10), mx03.secure-mailgate.com (pri: 10)`
SOA	1	`cns1.alfahosting.info hostmaster.alfahos`

Analysis

Hierarchy

mail.computer-masters.de is a subdomain of computer-masters.de.

IP Addresses

computer-masters.de resolves to just one IP address, 81.88.34.241.

Two other host names, along with fiely.de, hollop.net and mail.valisan-baden-baden.de, also share IP numbers with computer-masters.de.

Name Servers

Three name servers are authoritative for computer-masters.de: cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info.

The name servers of computer-masters.de overlap at least partially with those of other domains — among them bambey.com, (0x666574697368)-tattoo.com, reifen-rechberger.at and two more.

cns1.alfahosting.info resolves to 109.237.142.8 and 2a01:64c0:0:5000::8. cns2.alfahosting.info resolves to 148.251.254.105 and 2a01:4f8:2b02:a88::105. cns3.alfahosting.info resolves to 109.237.143.8 and 2a02:2b80:101:5000::8. All three hostnames point to two IP numbers each.

Mail Servers

computer-masters.de is served by two mail servers, mx03.secure-mailgate.com and mx04.secure-mailgate.com.

Among the domains sharing a mail server setup with computer-masters.de are sbgl.at, tabakwelt.net, hunde-buch.com and two others.

The mail servers for computer-masters.de overlap at least partially with those of other domains, including berndkofler.at and boulderkeskus.com.

Each of the two host names carries two IP addresses: mx03.secure-mailgate.com points to 46.243.88.174 and 46.243.88.176, and mx04.secure-mailgate.com points to 46.243.88.175 and 46.243.88.177.

computer-masters.de - robtex.com