`openknowledgehub.org`

DNSSEC	⚠️ Not signed
A	144.76.95.21^{🇩🇪 Hetzner144.76.0.0/16 HETZNER-RZ-BLK-ERX1}
		PTR	`static.21.95.76.144.clients.your-server.de`
NS	`hydrogen.ns.hetzner.com` ⭐
		A	2a01:4f8:0:1::add:1098^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`hydrogen.ns.hetzner.com`
		A	213.133.100.98^{🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1}
			PTR	`hydrogen.ns.hetzner.com`
NS	`helium.ns.hetzner.de`
		A	2001:67c:192c::add:5^{🇩🇪 NORIS-NETWORK2001:67c:192c::/48}
			PTR	`helium.ns.hetzner.de`
		A	193.47.99.5^{🇩🇪 NORIS-NETWORK193.47.99.0/24}
			PTR	`helium.ns.hetzner.de`
NS	`oxygen.ns.hetzner.com`
		A	2a01:4f8:0:1::add:2992^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`oxygen.ns.hetzner.com`
		A	88.198.229.192^{🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4}
			PTR	`oxygen.ns.hetzner.com`
MX	`mail.openknowledgehub.org` ⭐
		A	2a01:4f8:192:301a::100^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`mail.openknowledgehub.org`
		A	144.76.95.18^{🇩🇪 Hetzner144.76.0.0/16 HETZNER-RZ-BLK-ERX1}
			PTR	`mail.openknowledgehub.org`
TXT	`v=spf1 mx a -all`
SOA	`hydrogen.ns.hetzner.com`dns@hetzner.com 2026-04-27 #6

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1777281075

Subdomains

mail.openknowledgehub.org

DNS History

11 records (5 active, 6 former)

●NShelium.ns.hetzner.de2026-04-27 → 2026-04-27 · 3 obs

○ 2017-02-07 18:20:18
● 2026-04-27 09:24:36
● 2026-04-27 09:24:38

●NShydrogen.ns.hetzner.com2026-04-27 → 2026-04-27 · 3 obs

○ 2017-02-07 18:20:18
● 2026-04-27 09:24:36
● 2026-04-27 09:24:38

○NSns.namespace4you.de2015-06-11 → 2017-02-07 · 4 obs

● 2015-06-11 21:22:24
● 2017-02-07 18:20:18
○ 2026-04-27 09:24:36
○ 2026-04-27 09:24:38

○NSns2.namespace4you.de2015-06-11 → 2017-02-07 · 4 obs

● 2015-06-11 21:22:24
● 2017-02-07 18:20:18
○ 2026-04-27 09:24:36
○ 2026-04-27 09:24:38

●NSoxygen.ns.hetzner.com2026-04-27 → 2026-04-27 · 3 obs

○ 2017-02-07 18:20:18
● 2026-04-27 09:24:36
● 2026-04-27 09:24:38

●MXmail.openknowledgehub.org2026-04-27 → 2026-04-27 · 3 obs

○ 2017-02-07 18:20:18
● 2026-04-27 09:24:36
● 2026-04-27 09:24:38

○MXmxlb.ispgateway.de2015-06-11 → 2017-02-07 · 4 obs

● 2015-06-11 21:22:24
● 2017-02-07 18:20:18
○ 2026-04-27 09:24:36
○ 2026-04-27 09:24:38

●A144.76.95.212026-04-27 → 2026-04-27 · 3 obs

○ 2017-02-07 18:20:18
● 2026-04-27 09:24:36
● 2026-04-27 09:24:38

○A2a00:1158:0:300:b1fe::12015-06-11 → 2016-05-02 · 4 obs

● 2015-06-11 21:22:24
● 2016-05-02 10:16:42
○ 2017-02-07 18:20:18
○ 2026-04-27 09:24:38

○A2a00:1158:1000:300::2502017-02-07 → 2017-02-07 · 4 obs

○ 2016-05-02 10:16:42
● 2017-02-07 18:20:18
○ 2026-04-27 09:24:36
○ 2026-04-27 09:24:38

○A80.67.17.802015-06-11 → 2017-02-07 · 4 obs

● 2015-06-11 21:22:24
● 2017-02-07 18:20:18
○ 2026-04-27 09:24:36
○ 2026-04-27 09:24:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, c0.org.afilias-nst.info, d0.org.afilias-nst.org...	-
openknowledgehub.org	hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com, helium.ns.hetzner.de	-

✅ Authoritative Response

Server:193.47.99.5

NS records: hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com, helium.ns.hetzner.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for openknowledgehub.org (unsigned zone)

⏱️ Timing

Total: 675ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`144.76.95.21`
NS	3	`helium.ns.hetzner.de, hydrogen.ns.hetzner.com...`
MX	1	`mail.openknowledgehub.org (pri: 10)`
TXT	1	`v=spf1 mx a -all`
SOA	1	`hydrogen.ns.hetzner.com dns.hetzner.com`

Analysis

Hierarchy

The parent of mail.openknowledgehub.org is openknowledgehub.org.

IP Addresses

openknowledgehub.org points to a single IP: 144.76.95.21.

Name Servers

openknowledgehub.org is delegated to three name servers: hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com and helium.ns.hetzner.de.

openknowledgehub.org partially shares name servers with other domains; examples include ogger.club, stolarija-rusan.com, cityjacken.de, dpl.at and arabul.web.tr.

these name servers are commonly used with the name servers ns1.first-ns.de.

Host names with two IP numbers:

hydrogen.ns.hetzner.com points to 2a01:4f8:0:1::add:1098 and 213.133.100.98.

oxygen.ns.hetzner.com points to 2a01:4f8:0:1::add:2992 and 88.198.229.192.

helium.ns.hetzner.de points to 2001:67c:192c::add:5 and 193.47.99.5.

Mail Servers

openknowledgehub.org is handled by a single mail server, mail.openknowledgehub.org.

Host mail.openknowledgehub.org resolves to two IPs: 2a01:4f8:192:301a::100 and 144.76.95.18.

openknowledgehub.org - robtex.com