openbrook.de - dns.ninja

`openbrook.de`

DNSSEC	🔒 Signed (DS record present)
A	2a01:4f8:c17:c19c::1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
		PTR	`cs3.web-redirect.eu`
A	2a01:4f8:c2c:abf5::1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
A	2a01:4f8:c010:3f9c::1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
A	116.202.9.166^{🇩🇪 Hetzner116.202.0.0/16 HETZNER-DC}
A	116.202.21.136^{🇩🇪 Hetzner116.202.0.0/16 HETZNER-DC}
A	116.203.213.72^{🇩🇪 Hetzner116.203.0.0/16 HETZNER-DC}
NS	`ns1.domainoffensive.de` ⭐
		A	2001:67c:1bc::21^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast}
			PTR	`ns1.mainns.de`
		A	192.174.68.21^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net}
			PTR	`ns1.mainns.de`
NS	`ns2.domainoffensive.eu`
		A	2001:67c:10b8::21^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns2.mainns.eu`
		A	176.97.158.21^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns2.mainns.eu`
NS	`ns3.domainoffensive.net`
		A	2001:67c:1bc::20^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast}
			PTR	`ns3.mainns.net`
		A	192.174.68.20^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net}
			PTR	`ns3.mainns.net`
MX	`mx01.mail-redirect.de` ⭐
		A	2a01:4f8:1c17:52e9::1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`mx01.mail-redirect.de`
		A	88.99.82.73^{🇩🇪 Hetzner88.99.0.0/16 HETZNER-DC}
			PTR	`mx01.mail-redirect.de`
MX	`mx02.mail-redirect.eu` ⭐
		A	2a01:4f8:c2c:9ff::1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`mx02.mail-redirect.eu`
		A	159.69.107.183^{🇩🇪 Hetzner159.69.0.0/16 HETZNER-DC}
			PTR	`mx02.mail-redirect.eu`
TXT	`ad440a847138fe82a6458cc424deae6cd4371ed6`
TXT	`v=spf1 mx mx:mx01.mail-redirect.de mx:mx02.mail-redirect.eu ~all`
SOA	`ns1.domainoffensive.de`info@domains.resellerinterface.de serial=1784764800

`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=1785127990

Same first word

openbrook.com

openbrook.de

Similar names

boorkopen.nl

kopborneo.com

bonopoker.com

DNS History

16 records (11 active, 5 former)

●NSns1.domainoffensive.de2026-04-11 → 2026-07-27 · 3 obs

○ 2020-01-27 04:28:48
● 2026-04-11 03:21:46
● 2026-07-27 05:23:26

●NSns2.domainoffensive.eu2026-04-11 → 2026-07-27 · 3 obs

○ 2020-01-27 04:28:48
● 2026-04-11 03:21:46
● 2026-07-27 05:23:26

●NSns3.domainoffensive.net2026-04-11 → 2026-07-27 · 3 obs

○ 2020-01-27 04:28:48
● 2026-04-11 03:21:46
● 2026-07-27 05:23:26

○NSns5.kasserver.com2015-08-12 → 2020-01-27 · 4 obs

● 2015-08-12 15:57:58
● 2020-01-27 04:28:48
○ 2026-04-11 03:21:46
○ 2026-07-27 05:23:26

○NSns6.kasserver.com2015-08-12 → 2020-01-27 · 4 obs

● 2015-08-12 15:57:58
● 2020-01-27 04:28:48
○ 2026-04-11 03:21:46
○ 2026-07-27 05:23:26

○MXmail.openbrook.de2015-08-12 → 2016-04-27 · 4 obs

● 2015-08-12 15:57:58
● 2016-04-27 05:42:10
○ 2017-01-17 13:48:28
○ 2026-07-27 05:23:26

●MXmx01.mail-redirect.de2026-04-11 → 2026-07-27 · 3 obs

○ 2020-01-27 04:28:48
● 2026-04-11 03:21:46
● 2026-07-27 05:23:26

●MXmx02.mail-redirect.eu2026-04-11 → 2026-07-27 · 3 obs

○ 2020-01-27 04:28:48
● 2026-04-11 03:21:46
● 2026-07-27 05:23:26

○MXw00e1a58.kasserver.com2017-01-17 → 2020-01-27 · 5 obs

○ 2016-04-27 05:42:10
● 2017-01-17 13:48:28
● 2020-01-27 04:28:48
○ 2026-04-11 03:21:46
○ 2026-07-27 05:23:26

●A116.202.21.1362026-04-11 → 2026-07-27 · 3 obs

○ 2020-01-27 04:28:48
● 2026-04-11 03:21:46
● 2026-07-27 05:23:26

●A116.202.9.1662026-04-11 → 2026-07-27 · 3 obs

○ 2020-01-27 04:28:48
● 2026-04-11 03:21:46
● 2026-07-27 05:23:26

●A116.203.213.722026-04-11 → 2026-07-27 · 3 obs

○ 2020-01-27 04:28:48
● 2026-04-11 03:21:46
● 2026-07-27 05:23:26

●A2a01:4f8:c010:3f9c::12026-04-11 → 2026-07-27 · 3 obs

○ 2020-01-27 04:28:48
● 2026-04-11 03:21:46
● 2026-07-27 05:23:26

●A2a01:4f8:c17:c19c::12026-04-11 → 2026-07-27 · 3 obs

○ 2020-01-27 04:28:48
● 2026-04-11 03:21:46
● 2026-07-27 05:23:26

●A2a01:4f8:c2c:abf5::12026-04-11 → 2026-07-27 · 3 obs

○ 2020-01-27 04:28:48
● 2026-04-11 03:21:46
● 2026-07-27 05:23:26

○A85.13.130.652015-08-12 → 2020-01-27 · 4 obs

● 2015-08-12 15:57:58
● 2020-01-27 04:28:48
○ 2026-04-11 03:21:46
○ 2026-07-27 05:23:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	z.nic.de, a.nic.de, f.nic.de	-
openbrook.de	ns3.domainoffensive.net, ns1.domainoffensive.de, ns2.domainoffensive.eu	-

✅ Authoritative Response

Server:192.174.68.20

NS records: ns3.domainoffensive.net, ns1.domainoffensive.de, ns2.domainoffensive.eu

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1202ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`116.202.9.166, 116.202.21.136...`
AAAA	3	`2a01:4f8:c17:c19c::1, 2a01:4f8:c2c:abf5::1...`
NS	3	`ns1.domainoffensive.de, ns2.domainoffensive.eu...`
MX	2	`mx01.mail-redirect.de (pri: 10), mx02.mail-redirect.eu (pri: 10)`
TXT	2	`ad440a847138fe82a6458cc424deae6cd4371ed6, v=spf1 mx mx:mx01.mail-redirect.de mx:mx`
SOA	1	`ns1.domainoffensive.de info.domains.rese`

Analysis

IP Addresses

openbrook.de has 6 IP addresses — 116.202.9.166, 116.202.21.136, 116.203.213.72 and 3 more.

ki-telegram.online, niobi.de, seoagenturhamburg.de and two other host names share IP numbers with openbrook.de.

Name Servers

openbrook.de carries NS records delegating to ns1.domainoffensive.de, ns2.domainoffensive.eu and ns3.domainoffensive.net.

openbrook.de has at least partial name server overlap with other domains, such as scheibe.tv, screenspace.de, cvbg.de and two others.

It is common to see these name servers used together with name servers ns2.domainoffensive.de and ns3.domainoffensive.de.

ns1.domainoffensive.de, ns2.domainoffensive.eu and ns3.domainoffensive.net are three hostnames that each resolve to a pair of IP addresses: ns1.domainoffensive.de to 192.174.68.21 and 2001:67c:1bc::21, ns2.domainoffensive.eu to 176.97.158.21 and 2001:67c:10b8::21, and ns3.domainoffensive.net to 192.174.68.20 and 2001:67c:1bc::20.

Mail Servers

Mail for openbrook.de is handled by two mail servers — mx01.mail-redirect.de and mx02.mail-redirect.eu.

openbrook.de uses an identical mail server configuration to several other domains — among them sachsperformance.at, topf24.com, firbman.com and two more.

The mail servers of openbrook.de are at least partially shared with other domains, including nt-invest.com.

mx01.mail-redirect.de and mx02.mail-redirect.eu both carry two IP addresses. The A records for mx01.mail-redirect.de are 88.99.82.73 and 2a01:4f8:1c17:52e9::1; the A records for mx02.mail-redirect.eu are 159.69.107.183 and 2a01:4f8:c2c:9ff::1.