`officeschulung.com`

DNSSEC	⚠️ Not signed
A	5.44.111.67^{🇩🇪 ONE-NETWORK5.44.108.0/22}
		PTR	`web87.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 2026-02-15 #2

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1774627822

Same first word

officeschulung.com

DNS History

8 records (6 active, 2 former)

●NScns1.alfahosting.info2019-12-20 → 2026-03-27 · 2 obs

● 2019-12-20 22:36:54
● 2026-03-27 16:29:50

●NScns2.alfahosting.info2019-12-20 → 2026-03-27 · 2 obs

● 2019-12-20 22:36:54
● 2026-03-27 16:29:50

●NScns3.alfahosting.info2019-12-20 → 2026-03-27 · 2 obs

● 2019-12-20 22:36:54
● 2026-03-27 16:29:50

○MXmail.officeschulung.com2019-12-20 → 2019-12-20 · 3 obs

● 2019-12-20 22:36:54
○ 2026-03-11 05:35:24
○ 2026-03-27 16:29:50

●MXmx03.secure-mailgate.com2026-03-11 → 2026-03-27 · 3 obs

○ 2019-12-20 22:36:54
● 2026-03-11 05:35:24
● 2026-03-27 16:29:50

●MXmx04.secure-mailgate.com2026-03-11 → 2026-03-27 · 3 obs

○ 2019-12-20 22:36:54
● 2026-03-11 05:35:24
● 2026-03-27 16:29:50

○A109.237.140.62019-12-20 → 2019-12-20 · 3 obs

● 2019-12-20 22:36:54
○ 2026-03-11 05:35:24
○ 2026-03-27 16:29:50

●A5.44.111.672026-03-11 → 2026-03-27 · 3 obs

○ 2019-12-20 22:36:54
● 2026-03-11 05:35:24
● 2026-03-27 16:29:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, l.gtld-servers.net, f.gtld-servers.net, h.gtld-servers.net...	-
officeschulung.com	cns3.alfahosting.info, cns2.alfahosting.info, cns1.alfahosting.info	-

✅ Authoritative Response

Server:148.251.254.105

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for officeschulung.com (unsigned zone)

⏱️ Timing

Total: 817ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`5.44.111.67`
NS	3	`cns2.alfahosting.info, cns1.alfahosting.info...`
MX	2	`mx04.secure-mailgate.com (pri: 10), mx03.secure-mailgate.com (pri: 10)`
SOA	1	`cns1.alfahosting.info hostmaster@alfahos`

Analysis

IP Addresses

officeschulung.com resolves to a single IP address: 5.44.111.67.

Other host names including mail.impulsar-werkstatt.de, mail.kurdmania.net, mail.ethiko.de, mail.lfcev.de and eco-solar.de share IP numbers with officeschulung.com.

Name Servers

officeschulung.com is delegated to three name servers: cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info.

officeschulung.com at least partially shares name servers with other domains, including playmobox.com, rotec.de, school-of-rock.com, salon-fessler.de and buck-collegen.de.

Host names with two IP numbers:

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

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

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

Mail Servers

officeschulung.com is handled by two mail servers: mx03.secure-mailgate.com and mx04.secure-mailgate.com.

officeschulung.com shares its mail server setup with other domains, including velesti.de, elagua.info, italien-italien.info, gr-guitars.de and kirchberghaeuschen.de.

officeschulung.com shares some mail servers with other domains, at least partially, for instance polandstudy.com.

Host names with two IPs:

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

officeschulung.com - robtex.com