`mail.leon-engineering.de`

DNSSEC	⚠️ Not signed
A	91.233.87.21^{🇩🇪 IPB91.233.84.0/22 -1blu-PI}
		PTR	`mx1bln1.prossl.de`

`leon-engineering.de`

	DNSSEC	⚠️ Not signed
	A	91.233.84.253^{🇩🇪 IPB91.233.84.0/22 -1blu-PI}
	NS	`ns1.w3w.de` ⭐
	NS	`ns2.w3w.info`
	NS	`ns3.w3w.de`
	NS	`ns4.w3w.info`
	NS	`ns5.w3w.de`
	MX	`leonengineering-de01b.mail.protection.outlook.com` ⭐
	TXT	`v=spf1 include:spf.protection.outlook.com -all`
	SOA	`ns1.w3w.de`dnsmaster@prodns.de 2023-04-26 #5

Previously MX for

leon-engineering.de

Same first word

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DNS History

2 records (1 active, 1 former)

○A193.254.190.782015-05-02 → 2016-04-13 · 3 obs

● 2015-05-02 05:24:02
● 2016-04-13 18:46:14
○ 2026-04-13 12:33:34

●A91.233.87.212026-04-13 → 2026-04-13 · 2 obs

○ 2016-04-13 18:46:14
● 2026-04-13 12:33:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
leon-engineering.de	ns1.w3w.de, ns2.w3w.info, ns3.w3w.de, ns4.w3w.info...	3 records

✅ Authoritative Response

Server:3.74.199.198

NS records: ns1.w3w.de, ns2.w3w.info, ns3.w3w.de, ns4.w3w.info, ns5.w3w.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for leon-engineering.de (unsigned zone)

⏱️ Timing

Total: 1044ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`91.233.87.21`

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (ns1.w3w.de, ns3.w3w.de, ns5.w3w.de)

Analysis

IP Addresses

mail.leon-engineering.de points to a single IP: 91.233.87.21.

Other host names, for instance mail.kctech.de, mail.teamardex.at, mail.temmen.info, mail.geburtsfestival.info and mail.zahnarztpraxis-kulle.de share IP numbers with mail.leon-engineering.de.

mail.leon-engineering.de - robtex.com