`mail.systemguide.de`

DNSSEC	⚠️ Not signed
A	167.235.72.137^{🇩🇪 Hetzner167.235.0.0/16 HETZNER-DC}
		PTR	`cs601.fc-server.com`

`systemguide.de`

	DNSSEC	⚠️ Not signed
	A	167.235.72.137^{🇩🇪 Hetzner167.235.0.0/16 HETZNER-DC}
	NS	`dns.dns1.de` ⭐
	NS	`dns.dns2.de`
	NS	`dns.dns3.de`
	NS	`dns.dns4.de`
	MX	`mail.systemguide.de` ⭐
	SOA	`dns.dns1.de`hostmaster@internetwire.de 2025-09-11 #1

MX for

systemguide.de

Same first word

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DNS History

3 records (1 active, 2 former)

●A167.235.72.1372026-02-18 → 2026-03-27 · 3 obs

○ 2016-04-30 13:09:38
● 2026-02-18 07:47:44
● 2026-03-27 10:24:58

○A80.77.31.2322016-04-30 → 2016-04-30 · 4 obs

○ 2016-02-06 13:55:14
● 2016-04-30 13:09:38
○ 2026-02-18 07:47:44
○ 2026-03-27 10:24:58

○A83.243.43.1582015-07-08 → 2016-02-06 · 4 obs

● 2015-07-08 00:43:46
● 2016-02-06 13:55:14
○ 2016-04-30 13:09:38
○ 2026-03-27 10:24:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
systemguide.de	dns.dns4.de, dns.dns2.de, dns.dns1.de, dns.dns3.de	-

✅ Authoritative Response

Server:144.76.91.137

NS records: dns.dns4.de, dns.dns2.de, dns.dns1.de, dns.dns3.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for systemguide.de (unsigned zone)

⏱️ Timing

Total: 1268ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`167.235.72.137`

Analysis

Mail Server Role

mail.systemguide.de acts as a mail server for systemguide.de.

IP Addresses

mail.systemguide.de points to a single IP number: 167.235.72.137.

Other host names, for instance mail.buechold-online.de, crw-feindraht.de, mail.seildraht.eu, systemguide.de and mail.sicherungsdraht.com share IP numbers with mail.systemguide.de.

mail.systemguide.de - robtex.com