`kolping-nu.de`

DNSSEC	⚠️ Not signed
NS	`ns1.m-online.net` ⭐
		A	2001:a60:0:11::53^{🇩🇪 MNET-AS2001:a60::/29 DE-MNET-20021223 M-net Telekommunikations GmbH}
			PTR	`ns1.m-online.net`
		A	212.18.0.8^{🇩🇪 MNET-AS212.18.0.0/19 DE-MNET-980227}
			PTR	`ns1.m-online.net`
NS	`ns2.m-online.net`
		A	212.18.3.8^{🇩🇪 MNET-AS212.18.0.0/19 DE-MNET-980227}
			PTR	`ns2.m-online.net`
NS	`ns3.m-online.net`
		A	2001:8d8:1801:8039::1^{🇩🇪 IONOS-AS2001:8d8::/32 DE-IONOS-20020910}
			PTR	`ns3.m-online.net`
		A	217.160.41.67^{🇩🇪 IONOS-AS217.160.0.0/16 IONOS-PA-3}
			PTR	`ns3.m-online.net`
NS	`ns4.m-online.net`
		A	2001:a60:0:20::53^{🇩🇪 MNET-AS2001:a60::/29 DE-MNET-20021223 M-net Telekommunikations GmbH}
			PTR	`ns4.m-online.net`
		A	212.114.171.64^{🇩🇪 MNET-AS212.114.128.0/17 DE-MNET-981209}
			PTR	`ns4.m-online.net`
MX	`kolpingnu-de01i.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca27::^{🇩🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-beup281cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca2d::^{🇩🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-fr5p281cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:ca2d::1^{🇩🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-fr4p281cu03101.inbound.protection.outlook.com`
		A	2a01:111:f403:ca2d::2^{🇩🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-fr6p281cu00202.inbound.protection.outlook.com`
		A	52.101.168.0^{🇩🇪 Microsoft52.96.0.0/12 MICROSOFT}
		A	52.101.170.0^{🇩🇪 Microsoft52.96.0.0/12 MICROSOFT}
		A	52.101.170.1^{🇩🇪 Microsoft52.96.0.0/12 MICROSOFT}
		A	52.101.170.2^{🇩🇪 Microsoft52.96.0.0/12 MICROSOFT}
TXT	`v=spf1 include:spf.protection.outlook.com -all`
TXT	`MS=ms43558219`
SOA	`ns1.m-online.net`hostmaster@m-net.de 2022-02-08 #0

`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=1784925336

Subdomains

mail.kolping-nu.de

Same first word

kolping-nu.de

DNS History

13 records (5 active, 8 former)

○NSns1.augustakom.net2007-08-14 → 2007-08-14 · 3 obs

● 2007-08-14 23:59:42
○ 2015-06-07 20:45:56
○ 2026-07-24 20:51:20

●NSns1.m-online.net2015-06-07 → 2026-07-24 · 3 obs

○ 2007-08-14 23:59:42
● 2015-06-07 20:45:56
● 2026-07-24 20:51:20

○NSns2.augustakom.net2007-08-14 → 2007-08-14 · 3 obs

● 2007-08-14 23:59:42
○ 2015-06-07 20:45:56
○ 2026-07-24 20:51:20

●NSns2.m-online.net2015-06-07 → 2026-07-24 · 3 obs

○ 2007-08-14 23:59:42
● 2015-06-07 20:45:56
● 2026-07-24 20:51:20

●NSns3.m-online.net2015-06-07 → 2026-07-24 · 3 obs

○ 2007-08-14 23:59:42
● 2015-06-07 20:45:56
● 2026-07-24 20:51:20

●NSns4.m-online.net2015-06-07 → 2026-07-24 · 3 obs

○ 2007-08-14 23:59:42
● 2015-06-07 20:45:56
● 2026-07-24 20:51:20

●MXkolpingnu-de01i.mail.protection.outlook.com2026-02-17 → 2026-07-24 · 3 obs

○ 2017-10-11 02:25:12
● 2026-02-17 07:24:52
● 2026-07-24 20:51:20

○MXmail.kolping-nu.de2016-11-26 → 2017-10-11 · 5 obs

○ 2016-04-24 08:42:18
● 2016-11-26 14:46:58
● 2017-10-11 02:25:12
○ 2026-02-17 07:24:52
○ 2026-07-24 20:51:20

○MXmail1.kolping-nu.de2007-08-14 → 2016-04-24 · 4 obs

● 2007-08-14 23:59:42
● 2016-04-24 08:42:18
○ 2016-11-26 14:46:58
○ 2026-07-24 20:51:20

○MXmx01.m-online.net2015-06-07 → 2016-04-24 · 5 obs

○ 2007-08-14 23:59:42
● 2015-06-07 20:45:56
● 2016-04-24 08:42:18
○ 2016-11-26 14:46:58
○ 2026-07-24 20:51:20

○MXmx02.m-online.net2015-06-07 → 2016-04-24 · 5 obs

○ 2007-08-14 23:59:42
● 2015-06-07 20:45:56
● 2016-04-24 08:42:18
○ 2016-11-26 14:46:58
○ 2026-07-24 20:51:20

○MXmx1.augustakom.net2007-08-14 → 2007-08-14 · 3 obs

● 2007-08-14 23:59:42
○ 2015-06-07 20:45:56
○ 2026-07-24 20:51:20

○MXmx2.augustakom.net2007-08-14 → 2007-08-14 · 3 obs

● 2007-08-14 23:59:42
○ 2015-06-07 20:45:56
○ 2026-07-24 20:51:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
kolping-nu.de	ns4.m-online.net, ns2.m-online.net, ns1.m-online.net, ns3.m-online.net	-

✅ Authoritative Response

Server:212.18.3.8

NS records: ns4.m-online.net, ns2.m-online.net, ns1.m-online.net, ns3.m-online.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kolping-nu.de (unsigned zone)

⏱️ Timing

Total: 1540ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns3.m-online.net, ns4.m-online.net...`
MX	1	`kolpingnu-de01i.mail.protection.outlook.`
TXT	2	`v=spf1 include:spf.protection.outlook.co, MS=ms43558219`
SOA	1	`ns1.m-online.net hostmaster.m-net.de`

Analysis

Hierarchy

mail.kolping-nu.de is delegated beneath kolping-nu.de.

Name Servers

kolping-nu.de has four authoritative name servers: ns1.m-online.net, ns2.m-online.net, ns3.m-online.net and ns4.m-online.net.

There is at least partial name server overlap between kolping-nu.de and other domains — 127.104.93.in-addr.arpa, notare-bju.de, 4.217.88.in-addr.arpa and two more among them.

The name servers dns-001.securepoint.de, ns2.bayern.de and ns.bayern.de are often found in combination with these name servers.

Host names with two IP numbers:

ns1.m-online.net points to 212.18.0.8 and 2001:a60:0:11::53.

ns3.m-online.net points to 217.160.41.67 and 2001:8d8:1801:8039::1.

ns4.m-online.net points to 212.114.171.64 and 2001:a60:0:20::53.

Host names pointing to a single IP address:

ns2.m-online.net points to 212.18.3.8.