`mail.lehrerapp.de`

DNSSEC	⚠️ Not signed
A	78.46.134.45^{🇩🇪 Hetzner78.46.0.0/15 HETZNER-RZ-NBG-BLK5}
		PTR	`www.lehrerapp.de`

`lehrerapp.de`

	DNSSEC	⚠️ Not signed
	A	78.46.134.45^{🇩🇪 Hetzner78.46.0.0/15 HETZNER-RZ-NBG-BLK5}
	NS	`ns1.your-server.de` ⭐
	NS	`ns.second-ns.com`
	NS	`ns3.second-ns.de`
	MX	`mail.lehrerapp.de` ⭐
	TXT	`v=spf1 a mx ptr a:dedi3339.your-server.de ip4:213.133.121.89 ~all`
	SOA	`ns1.your-server.de`postmaster@your-server.de 2026-01-14 #0

MX for

lehrerapp.de

Same first word

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DNS History

1 record (1 active, 0 former)

●A78.46.134.452015-07-12 → 2026-05-12 · 2 obs

● 2015-07-12 04:20:00
● 2026-05-12 12:32:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
lehrerapp.de	ns1.your-server.de, ns3.second-ns.de, ns.second-ns.com	4 records

✅ Authoritative Response

Server:213.133.100.102

NS records: ns1.your-server.de, ns3.second-ns.de, ns.second-ns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for lehrerapp.de (unsigned zone)

⏱️ Timing

Total: 1251ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`78.46.134.45`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns3.second-ns.de, ns1.your-server.de, ns3.second-ns.de...)

Analysis

Mail Server Role

mail.lehrerapp.de serves as the mail server for lehrerapp.de.

IP Addresses

mail.lehrerapp.de resolves to a single IP: 78.46.134.45.

Other host names, for instance, www.lehrerapp.de and lehrerapp.de share IP numbers with mail.lehrerapp.de.

mail.lehrerapp.de - robtex.com