`koebsch-software.de`

DNSSEC	⚠️ Not signed
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 2023-10-23 #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=1777520882

Subdomains

mail.koebsch-software.de

Same first word

koebsch-software.de

DNS History

7 records (5 active, 2 former)

●NScns1.alfahosting.info2015-07-21 → 2026-04-30 · 2 obs

● 2015-07-21 06:29:26
● 2026-04-30 03:59:20

●NScns2.alfahosting.info2015-07-21 → 2026-04-30 · 2 obs

● 2015-07-21 06:29:26
● 2026-04-30 03:59:20

●NScns3.alfahosting.info2015-07-21 → 2026-04-30 · 2 obs

● 2015-07-21 06:29:26
● 2026-04-30 03:59:20

○MXmail.koebsch-software.de2015-07-21 → 2017-02-20 · 4 obs

● 2015-07-21 06:29:26
● 2017-02-20 06:23:58
○ 2026-02-15 12:07:52
○ 2026-04-30 03:59:20

●MXmx03.secure-mailgate.com2026-02-15 → 2026-04-30 · 3 obs

○ 2017-02-20 06:23:58
● 2026-02-15 12:07:52
● 2026-04-30 03:59:20

●MXmx04.secure-mailgate.com2026-02-15 → 2026-04-30 · 3 obs

○ 2017-02-20 06:23:58
● 2026-02-15 12:07:52
● 2026-04-30 03:59:20

○A109.237.133.762015-07-21 → 2026-02-15 · 4 obs

● 2015-07-21 06:29:26
● 2026-02-15 12:07:52
○ 2026-02-19 11:49:18
○ 2026-04-30 03:59:20

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:109.237.142.8

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for koebsch-software.de (unsigned zone)

⏱️ Timing

Total: 1254ms | Queries: -

📄 Records

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

Analysis

Hierarchy

koebsch-software.de is the parent of mail.koebsch-software.de.

Name Servers

koebsch-software.de delegates to three name servers: cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info.

koebsch-software.de shares some name servers with other domains, for example beerknietsch.de, spechtpassage.de, beste-sonne.de, m31.de and wikingerhaus.de.

Host names with two IP numbers:

cns1.alfahosting.info: 2a01:64c0:0:5000::8 and 109.237.142.8

cns2.alfahosting.info: 2a01:4f8:2b02:a88::105 and 148.251.254.105

cns3.alfahosting.info: 2a02:2b80:101:5000::8 and 109.237.143.8

Mail Servers

koebsch-software.de is served by two mail servers: mx03.secure-mailgate.com and mx04.secure-mailgate.com.

koebsch-software.de shares the mail server setup with other domains, for example musikschule-mikolasch.de, tuff.de, feinserie.de, bs-coach.de and lafa-net.de.

koebsch-software.de shares at least some mail servers with other domains, for example sebastiandubiel.de.

Host names with two IP numbers:

mx03.secure-mailgate.com points to: 46.243.88.174 and 46.243.88.176; mx04.secure-mailgate.com points to: 46.243.88.175 and 46.243.88.177.

koebsch-software.de - robtex.com