`mail.ff-blumenthal.de`

DNSSEC	⚠️ Not signed
A	2a03:4000:1c:3a4::1^{🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH}
		PTR	`mail.ff-blumenthal.de`
A	185.194.143.4^{🇩🇪 netcup-AS185.194.140.0/22 NETCUP-GMBH}

`ff-blumenthal.de`

	DNSSEC	🔒 Signed (DS record present)
	A	2a03:4000:30:995c::13:9773^{🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH}
	A	91.204.46.100^{🇩🇪 netcup-AS91.204.46.0/24}
	NS	`root-dns.netcup.net` ⭐
	NS	`second-dns.netcup.net`
	NS	`third-dns.netcup.net`
	MX	`mail.ff-blumenthal.de` ⭐
	TXT	`v=spf1 a mx ip4:185.194.143.4/32 ip6:2a03:4000:1c:3a4::1/64 ~all`
	SOA	`root-dns.netcup.net`dnsadmin@netcup.net 2026-04-09 #1

PTR for

4.143.194.185.in-addr.arpa

1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.4.a.3.0.c.1.0.0.0.0.0.4.3.0.a.2.ip6.arpa

MX for

ff-blumenthal.de

Same first word

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DNS History

5 records (2 active, 3 former)

●A185.194.143.42026-02-15 → 2026-04-13 · 3 obs

○ 2016-04-24 01:05:14
● 2026-02-15 04:59:24
● 2026-04-13 18:53:58

○A185.21.103.672015-05-20 → 2015-10-28 · 4 obs

● 2015-05-20 16:04:52
● 2015-10-28 01:14:16
○ 2016-01-22 18:57:48
○ 2026-04-13 18:53:58

○A2a02:a00:e012:4000::1:22016-01-22 → 2016-04-24 · 5 obs

○ 2015-10-28 01:14:16
● 2016-01-22 18:57:48
● 2016-04-24 01:05:14
○ 2026-02-15 04:59:24
○ 2026-04-13 18:53:58

●A2a03:4000:1c:3a4::12026-02-15 → 2026-04-13 · 3 obs

○ 2016-04-24 01:05:14
● 2026-02-15 04:59:24
● 2026-04-13 18:53:58

○A46.41.21.592016-01-22 → 2016-04-24 · 5 obs

○ 2015-10-28 01:14:16
● 2016-01-22 18:57:48
● 2016-04-24 01:05:14
○ 2026-02-15 04:59:24
○ 2026-04-13 18:53:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
ff-blumenthal.de	third-dns.netcup.net, second-dns.netcup.net, root-dns.netcup.net	-

✅ Authoritative Response

Server:46.38.225.225

NS records: third-dns.netcup.net, second-dns.netcup.net, root-dns.netcup.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1621ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.194.143.4`
AAAA	1	`2a03:4000:1c:3a4::1`

Analysis

Mail Server Role

mail.ff-blumenthal.de serves as a mail server for ff-blumenthal.de.

IP Addresses

mail.ff-blumenthal.de has two IP numbers: 2a03:4000:1c:3a4::1 and 185.194.143.4.

mail.ff-blumenthal.de - robtex.com