`open-source-blog.de`

DNSSEC	⚠️ Not signed
A	195.90.211.226^{🇩🇪 EVANZOAS195.90.192.0/18}
		PTR	`god.behrens.biz`
NS	`ns1.axcoredns.com` ⭐ ⚠️ Not in parent delegation
		A	2a09:71c0::101:0:12^{🇩🇪 SYNLINQ2a09:71c0::/29}
		A	45.67.68.12^{🇩🇪 SYNLINQ45.67.68.0/24}
			PTR	`ns1-tec.de`
NS	`ns1-tec.de` ⚠️ Not in zone NS records
		A	2a09:71c0::101:0:12^{🇩🇪 SYNLINQ2a09:71c0::/29}
		A	45.67.68.12^{🇩🇪 SYNLINQ45.67.68.0/24}
			PTR	`ns1-tec.de`
NS	`ns2-tec.de` ⚠️ Not in zone NS records
		A	2a01:4f8:c014:d47::12^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
		A	46.224.169.132^{🇮🇷 Hetzner46.224.0.0/15 HETZNER-DC}
			PTR	`ns2-tec.de`
NS	`ns2.axcoredns.org` ⚠️ Not in parent delegation
		A	2a01:4f8:c014:d47::12^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
		A	46.224.169.132^{🇮🇷 Hetzner46.224.0.0/15 HETZNER-DC}
			PTR	`ns2-tec.de`
SOA	`ns1.axcoredns.com`webmaster@open-source-blog.de 2026-02-18 #2

`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=1776062943

Subdomains

www.open-source-blog.de

Same first word

open-source-blog.com

open-source-blog.de

DNS History

12 records (5 active, 7 former)

●NSns1-tec.de2026-02-24 → 2026-04-13 · 3 obs

○ 2018-12-18 14:21:14
● 2026-02-24 14:09:34
● 2026-04-13 07:12:50

●NSns1.axcoredns.com2026-04-13 → 2026-04-13 · 2 obs

○ 2026-02-24 14:09:34
● 2026-04-13 07:12:50

●NSns2-tec.de2026-02-24 → 2026-04-13 · 3 obs

○ 2018-12-18 14:21:14
● 2026-02-24 14:09:34
● 2026-04-13 07:12:50

●NSns2.axcoredns.org2026-04-13 → 2026-04-13 · 2 obs

○ 2026-02-24 14:09:34
● 2026-04-13 07:12:50

○NSnsa2.schlundtech.de2015-08-18 → 2018-12-18 · 4 obs

● 2015-08-18 21:40:48
● 2018-12-18 14:21:14
○ 2026-02-24 14:09:34
○ 2026-04-13 07:12:50

○NSnsb2.schlundtech.de2015-08-18 → 2018-12-18 · 4 obs

● 2015-08-18 21:40:48
● 2018-12-18 14:21:14
○ 2026-02-24 14:09:34
○ 2026-04-13 07:12:50

○NSnsc2.schlundtech.de2015-08-18 → 2018-12-18 · 4 obs

● 2015-08-18 21:40:48
● 2018-12-18 14:21:14
○ 2026-02-24 14:09:34
○ 2026-04-13 07:12:50

○NSnsd2.schlundtech.de2015-08-18 → 2018-12-18 · 4 obs

● 2015-08-18 21:40:48
● 2018-12-18 14:21:14
○ 2026-02-24 14:09:34
○ 2026-04-13 07:12:50

○MXwww.open-source-blog.de2015-08-18 → 2018-12-18 · 4 obs

● 2015-08-18 21:40:48
● 2018-12-18 14:21:14
○ 2026-02-24 14:09:34
○ 2026-04-13 07:12:50

○A195.201.177.1022018-12-18 → 2018-12-18 · 4 obs

○ 2017-01-23 22:36:08
● 2018-12-18 14:21:14
○ 2026-02-24 14:09:34
○ 2026-04-13 07:12:50

●A195.90.211.2262026-02-24 → 2026-04-13 · 3 obs

○ 2018-12-18 14:21:14
● 2026-02-24 14:09:34
● 2026-04-13 07:12:50

○A88.198.81.1322015-08-18 → 2017-01-23 · 4 obs

● 2015-08-18 21:40:48
● 2017-01-23 22:36:08
○ 2018-12-18 14:21:14
○ 2026-04-13 07:12:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
open-source-blog.de	ns1-tec.de, ns2-tec.de	4 records

✅ Authoritative Response

Server:45.67.68.12

NS records: ns1-tec.de, ns2-tec.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for open-source-blog.de (unsigned zone)

⏱️ Timing

Total: 729ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`195.90.211.226`
NS	2	`ns2.axcoredns.org, ns1.axcoredns.com`
SOA	1	`ns1.axcoredns.com webmaster.open-source-`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1-tec.de, ns2-tec.de, ns1-tec.de...)

Analysis

Hierarchy

open-source-blog.de is the parent of www.open-source-blog.de.

IP Addresses

open-source-blog.de resolves to one IP number: 195.90.211.226.

other host names including mail.sydns.de, sisol.net, mail.sisol.net, linux-oldenburg.de and syphone.de share IP numbers with open-source-blog.de.

Name Servers

open-source-blog.de is delegated to four name servers: ns1-tec.de, ns2-tec.de, ns1.axcoredns.com and ns2.axcoredns.org.

open-source-blog.de at least partially shares name servers with other domains, for instance vulpesimmobilien.de, schrammgrundbesitz.com, oeko-gui.de, r7t.de and apotheke-billig.de.

Host names with two IP numbers:

ns1-tec.de points to: 2a09:71c0::101:0:12 and 45.67.68.12

ns2-tec.de points to: 2a01:4f8:c014:d47::12 and 46.224.169.132

ns1.axcoredns.com points to: 2a09:71c0::101:0:12 and 45.67.68.12

ns2.axcoredns.org points to: 2a01:4f8:c014:d47::12 and 46.224.169.132

Host names that point to 2a09:71c0::101:0:12: ns1-tec.de and ns1.axcoredns.com

Host names that point to 45.67.68.12: ns1-tec.de and ns1.axcoredns.com

Host names that point to 2a01:4f8:c014:d47::12: ns2-tec.de and ns2.axcoredns.org

Host names that point to 46.224.169.132: ns2-tec.de and ns2.axcoredns.org

open-source-blog.de - robtex.com