`mail.mastblau.com`

DNSSEC	⚠️ Not signed
A	37.218.254.117^{🇩🇪 ONE-NETWORK37.218.248.0/21}
		PTR	`c17.hostmaschine.de`

`mastblau.com`

	DNSSEC	⚠️ Not signed
	A	37.218.254.117^{🇩🇪 ONE-NETWORK37.218.248.0/21}
	NS	`dns3.nsdns.info` ⭐
	NS	`dns1.nsdns.info`
	NS	`dns2.nsdns.info`
	MX	`mail.mastblau.com` ⭐
	SOA	`dns3.nsdns.info`tech@key-systems.net 2019-01-28 #0

MX for

mastblau.com

Same first word

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DNS History

2 records (1 active, 1 former)

●A37.218.254.1172026-02-18 → 2026-04-26 · 3 obs

○ 2016-02-18 20:05:04
● 2026-02-18 10:19:04
● 2026-04-26 22:37:02

○A80.74.154.1612008-03-16 → 2016-02-18 · 4 obs

● 2008-03-16 10:57:36
● 2016-02-18 20:05:04
○ 2026-02-18 10:19:04
○ 2026-04-26 22:37:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
mastblau.com	dns2.nsdns.info, dns1.nsdns.info, dns3.nsdns.info	-

✅ Authoritative Response

Server:194.50.187.33

NS records: dns2.nsdns.info, dns1.nsdns.info, dns3.nsdns.info

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mastblau.com (unsigned zone)

⏱️ Timing

Total: 192ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`37.218.254.117`

Analysis

Mail Server Role

mail.mastblau.com acts as a mail server for mastblau.com.

IP Addresses

mail.mastblau.com points to a single IP number: 37.218.254.117.

Other host names, for instance mail.biberbau-badsaarow.de, moskal.eu, bizibox.de, mail.soyou.de and ctb-hof.de share IP numbers with mail.mastblau.com.

mail.mastblau.com - robtex.com