`professional-learning.eu`

DNSSEC	🔒 Signed (DS record present)
A	2a03:4000:4d:cd2:b88f:efff:feae:890d^{🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH}
		PTR	`nobody.yourvserver.net`
A	194.36.144.159^{🇦🇹 netcup-AS194.36.144.0/22 powered by ANX}
NS	`root-dns.netcup.net` ⭐
		A	2a03:4000:0:1::e1e1^{🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH}
			PTR	`root-dns.netcup.net`
		A	46.38.225.225^{🇩🇪 netcup-AS46.38.225.0/24}
			PTR	`root-dns.netcup.net`
NS	`second-dns.netcup.net`
		A	2a03:4000:2:24b::c7c7^{🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH}
			PTR	`second-dns.netcup.net`
		A	37.221.199.199^{🇩🇪 netcup-AS37.221.196.0/22}
			PTR	`second-dns.netcup.net`
NS	`third-dns.netcup.net`
		A	2a03:4001:0:106::3f44^{🇩🇪 netcup-AS2a03:4001::/32 NETCUP-GMBH}
			PTR	`third-dns.netcup.net`
		A	188.68.63.68^{🇩🇪 netcup-AS188.68.63.0/24 NETCUP-GMBH}
			PTR	`third-dns.netcup.net`
MX	`mail.qsolutions.de` ⭐
		A	37.120.183.211^{🇩🇪 netcup-AS37.120.182.0/23}
			PTR	`mail.bin-co.de`
TXT	`v=spf1 mx -all`
SOA	`root-dns.netcup.net`dnsadmin@netcup.net 2026-04-02 #28

`eu`

	DNSSEC	🔒 Signed (DS record present)
	NS	`si.dns.eu` ⭐
	NS	`be.dns.eu`
	NS	`w.dns.eu`
	NS	`x.dns.eu`
	NS	`y.dns.eu`
	SOA	`si.dns.eu`tech@eurid.eu serial=1123577782

Same first word

professional-learning.ch

professional-learning.eu

DNS History

22 records (6 active, 16 former)

○NSns.inwx.de2015-08-06 → 2017-03-31 · 4 obs

● 2015-08-06 07:04:00
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

○NSns2.inwx.de2015-08-06 → 2017-03-31 · 4 obs

● 2015-08-06 07:04:00
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

○NSns3.inwx.de2015-08-06 → 2016-03-17 · 4 obs

● 2015-08-06 07:04:00
● 2016-03-17 02:28:16
○ 2016-07-17 17:38:58
○ 2026-04-24 05:33:14

○NSns3.inwx.eu2016-07-17 → 2017-03-31 · 5 obs

○ 2016-03-17 02:28:16
● 2016-07-17 17:38:58
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

○NSns4.inwx.com2016-07-17 → 2017-03-31 · 5 obs

○ 2016-03-17 02:28:16
● 2016-07-17 17:38:58
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

○NSns5.inwx.net2016-07-17 → 2017-03-31 · 5 obs

○ 2016-03-17 02:28:16
● 2016-07-17 17:38:58
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

●NSroot-dns.netcup.net2026-03-17 → 2026-04-24 · 3 obs

○ 2017-03-31 08:47:06
● 2026-03-17 10:35:08
● 2026-04-24 05:33:14

●NSsecond-dns.netcup.net2026-03-17 → 2026-04-24 · 3 obs

○ 2017-03-31 08:47:06
● 2026-03-17 10:35:08
● 2026-04-24 05:33:14

●NSthird-dns.netcup.net2026-03-17 → 2026-04-24 · 3 obs

○ 2017-03-31 08:47:06
● 2026-03-17 10:35:08
● 2026-04-24 05:33:14

○MXalt1.aspmx.l.google.com2015-08-06 → 2017-03-31 · 4 obs

● 2015-08-06 07:04:00
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

○MXalt2.aspmx.l.google.com2015-08-06 → 2017-03-31 · 4 obs

● 2015-08-06 07:04:00
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

○MXaspmx.l.google.com2015-08-06 → 2017-03-31 · 4 obs

● 2015-08-06 07:04:00
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

○MXaspmx2.googlemail.com2015-08-06 → 2017-03-31 · 4 obs

● 2015-08-06 07:04:00
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

○MXaspmx3.googlemail.com2015-08-06 → 2017-03-31 · 4 obs

● 2015-08-06 07:04:00
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

○MXaspmx4.googlemail.com2015-08-06 → 2017-03-31 · 4 obs

● 2015-08-06 07:04:00
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

●MXmail.qsolutions.de2026-03-17 → 2026-04-24 · 3 obs

○ 2017-03-31 08:47:06
● 2026-03-17 10:35:08
● 2026-04-24 05:33:14

○A130.185.108.1972015-08-06 → 2015-11-26 · 4 obs

● 2015-08-06 07:04:00
● 2015-11-26 06:43:00
○ 2016-03-17 02:28:16
○ 2026-04-24 05:33:14

○A188.68.53.2542016-03-17 → 2017-03-31 · 5 obs

○ 2015-11-26 06:43:00
● 2016-03-17 02:28:16
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

●A194.36.144.1592026-03-17 → 2026-04-24 · 3 obs

○ 2017-03-31 08:47:06
● 2026-03-17 10:35:08
● 2026-04-24 05:33:14

○A2a01:4a0:2002:2171::1022015-08-06 → 2015-11-26 · 4 obs

● 2015-08-06 07:04:00
● 2015-11-26 06:43:00
○ 2016-03-17 02:28:16
○ 2026-04-24 05:33:14

●A2a03:4000:4d:cd2:b88f:efff:feae:890d2026-03-17 → 2026-04-24 · 3 obs

○ 2017-03-31 08:47:06
● 2026-03-17 10:35:08
● 2026-04-24 05:33:14

○A2a03:4000:6:e05b::32016-03-17 → 2017-03-31 · 5 obs

○ 2015-11-26 06:43:00
● 2016-03-17 02:28:16
● 2017-03-31 08:47:06
○ 2026-03-17 10:35:08
○ 2026-04-24 05:33:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
eu	x.dns.eu, y.dns.eu, be.dns.eu, si.dns.eu...	-
professional-learning.eu	second-dns.netcup.net, root-dns.netcup.net, third-dns.netcup.net	-

✅ Authoritative Response

Server:37.221.199.199

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 902ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`194.36.144.159`
AAAA	1	`2a03:4000:4d:cd2:b88f:efff:feae:890d`
NS	3	`third-dns.netcup.net, root-dns.netcup.net...`
MX	1	`mail.qsolutions.de (pri: 10)`
TXT	1	`v=spf1 mx -all`
SOA	1	`root-dns.netcup.net dnsadmin.netcup.net`

Analysis

IP Addresses

professional-learning.eu resolves to two IPs: 2a03:4000:4d:cd2:b88f:efff:feae:890d and 194.36.144.159.

other host names for instance buber.de, vpsn3.qsolutions.de, martin-buber.de, allinone-browser.de and v2202512287728413374.nicesrv.de share IP numbers with professional-learning.eu.

Name Servers

professional-learning.eu is delegated to three name servers: root-dns.netcup.net, second-dns.netcup.net and third-dns.netcup.net.

professional-learning.eu at least partially shares name servers with other domains, for instance pbmichel.de, zweckjaeger.com, muselab.de, loker-it.de and nexxt-step.de.

Host names with two IP numbers:

Host root-dns.netcup.net points to 2a03:4000:0:1::e1e1 and 46.38.225.225.

Host second-dns.netcup.net points to 2a03:4000:2:24b::c7c7 and 37.221.199.199.

Host third-dns.netcup.net points to 2a03:4001:0:106::3f44 and 188.68.63.68.

Mail Servers

professional-learning.eu is handled by a single mail server, mail.qsolutions.de.

professional-learning.eu shares the same mail server setup as other domains, such as buber.de, martin-buber.de and allinone-browser.de.

Host name mail.qsolutions.de points to IP address 37.120.183.211.

professional-learning.eu - robtex.com