`holdermann.de`

DNSSEC	⚠️ Not signed
A	85.214.239.136^{🇩🇪 STRATO85.214.0.0/15 AG}
		PTR	`h2180433.stratoserver.net`
NS	`ns4.stratoserver.net` ⭐
		A	2001:8d8:fe:53:5747:2a74:d:32^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns4.stratoserver.net`
		A	217.160.80.159^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns4.stratoserver.net`
NS	`ns3.stratoserver.net`
		A	2607:f1c0:fe:53:185:132:34:159^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`ns3.stratoserver.net`
		A	185.132.34.159^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns3.stratoserver.net`
MX	`mail.deutsche-blister.de` ⭐
		A	194.25.146.4^{🇩🇪 DTAG194.25.0.0/16 Deutsche Telekom AG, Internet service provider}
TXT	`v=spf1 mx -all`
SOA	`ns4.stratoserver.net`hostmaster@strato-rz.de 2020-05-14 #6

`de`

	DNSSEC	🔒 Signed (DS record present)
	NS	`f.nic.de` ⭐
	NS	`a.nic.de`
	NS	`l.de.net` ⚠️ Not in parent delegation
	NS	`n.de.net` ⚠️ Not in parent delegation
	NS	`s.de.net` ⚠️ Not in parent delegation
	NS	`z.nic.de`
	SOA	`f.nic.de`dns-operations@denic.de serial=1778745377

Previously MX for

*.holdermann.de

holdermann.de

Subdomains

www.holdermann.de

*.holdermann.de

mail.holdermann.de

Same first word

holdermann.de

holdermann.net

holdermann.me

DNS History

8 records (4 active, 4 former)

○NSns.stratoserver.net2015-07-25 → 2016-07-29 · 4 obs

● 2015-07-25 22:58:10
● 2016-07-29 01:22:20
○ 2017-03-29 15:53:02
○ 2026-05-14 08:08:06

○NSns2.stratoserver.net2015-07-25 → 2016-07-29 · 4 obs

● 2015-07-25 22:58:10
● 2016-07-29 01:22:20
○ 2017-03-29 15:53:02
○ 2026-05-14 08:08:06

●NSns3.stratoserver.net2017-03-29 → 2026-05-14 · 3 obs

○ 2016-07-29 01:22:20
● 2017-03-29 15:53:02
● 2026-05-14 08:08:06

●NSns4.stratoserver.net2017-03-29 → 2026-05-14 · 3 obs

○ 2016-07-29 01:22:20
● 2017-03-29 15:53:02
● 2026-05-14 08:08:06

○MXholdermann.de2015-07-25 → 2017-03-29 · 4 obs

● 2015-07-25 22:58:10
● 2017-03-29 15:53:02
○ 2026-02-18 01:00:56
○ 2026-05-14 08:08:06

●MXmail.deutsche-blister.de2026-02-18 → 2026-05-14 · 3 obs

○ 2017-03-29 15:53:02
● 2026-02-18 01:00:56
● 2026-05-14 08:08:06

○A194.25.146.42015-07-25 → 2017-03-29 · 4 obs

● 2015-07-25 22:58:10
● 2017-03-29 15:53:02
○ 2026-02-18 01:00:56
○ 2026-05-14 08:08:06

●A85.214.239.1362026-02-18 → 2026-05-14 · 3 obs

○ 2017-03-29 15:53:02
● 2026-02-18 01:00:56
● 2026-05-14 08:08:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	z.nic.de, l.de.net, n.de.net, s.de.net...	-
holdermann.de	ns4.stratoserver.net, ns3.stratoserver.net	-

✅ Authoritative Response

Server:217.160.80.159

NS records: ns4.stratoserver.net, ns3.stratoserver.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for holdermann.de (unsigned zone)

⏱️ Timing

Total: 1230ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`85.214.239.136`
NS	2	`ns3.stratoserver.net, ns4.stratoserver.net`
MX	1	`mail.deutsche-blister.de (pri: 10)`
TXT	1	`v=spf1 mx -all`
SOA	1	`ns4.stratoserver.net hostmaster.strato-r`

Analysis

Hierarchy

holdermann.de is a parent of www.holdermann.de, *.holdermann.de and mail.holdermann.de.

IP Addresses

holdermann.de resolves to a single IP address: 85.214.239.136.

Other host names, such as www.holdermann.de and h2180433.stratoserver.net, share IP numbers with holdermann.de.

Name Servers

holdermann.de's delegation uses two name servers, ns3.stratoserver.net and ns4.stratoserver.net.

holdermann.de shares the same name server setup as other domains, for example elmanshar.com, mein-kraeutergarten.eu, mura.mobi, terra-ruhr.de and dinschede.de.

Host names with two IPs:

ns3.stratoserver.net points to: 2607:f1c0:fe:53:185:132:34:159 and 185.132.34.159

ns4.stratoserver.net points to: 2001:8d8:fe:53:5747:2a74:d:32 and 217.160.80.159

Mail Servers

holdermann.de is handled by a single mail server, mail.deutsche-blister.de.

holdermann.de uses the same mail server setup as other domains, such as deutsche-blister.de.

mail.deutsche-blister.de points to a single IP: 194.25.146.4.

holdermann.de - robtex.com

holdermann.de

de