linux-profi.net - dns.ninja

`linux-profi.net`

DNSSEC	⚠️ Not signed
A	213.214.28.84^{🇩🇪 ASNETBASE213.214.24.0/21 Rockenstein AG Subnet Freiburg}
		PTR	`nb-web-001.rzfr.de`
NS	`nb-ns-001.rzfr.de` ⭐
		A	213.214.28.111^{🇩🇪 ASNETBASE213.214.24.0/21 Rockenstein AG Subnet Freiburg}
			PTR	`nb-ns-001.rzfr.de`
NS	`nb-ns-002.rzfr.de`
		A	87.106.239.17^{🇩🇪 IONOS-AS87.106.0.0/16 IONOS-PA-5}
			PTR	`nb-ns-002.rzfr.de`
NS	`nb-ns-003.rzfr.de`
		A	213.214.27.17^{🇩🇪 ASNETBASE213.214.24.0/21 Rockenstein AG Subnet Freiburg}
			PTR	`nb-ns-003.rzfr.de`
NS	`nb-ns-004.linux-profi.com` ⚠️ Not in parent delegation
		A	104.219.42.123^{🇺🇸 IONOS-AS104.219.40.0/22 1&1 Internet Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`nb-ns-004.linux-profi.com`
MX	`mx01.rzfr.de` ⭐
		A	213.214.30.3^{🇩🇪 ASNETBASE213.214.24.0/21 Rockenstein AG Subnet Freiburg}
			PTR	`mx01.rzfr.de`
MX	`mx02.rzfr.de`⁽²⁰⁾
		A	213.214.27.25^{🇩🇪 ASNETBASE213.214.24.0/21 Rockenstein AG Subnet Freiburg}
			PTR	`mx02.rzfr.de`
MX	`28-70.rzfr.de`⁽⁹⁰⁾
		A	213.214.28.70^{🇩🇪 ASNETBASE213.214.24.0/21 Rockenstein AG Subnet Freiburg}
			PTR	`mail70.rzfr.de`
TXT	`v=spf1 a mx -all`
SOA	`nb-ns-001.rzfr.de`hostmaster@rzfr.de serial=1785330303

`net`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1786381219

Subdomains

28-70.linux-profi.net

mail.linux-profi.net

Same first word

linux-profi.com

linux-profi.de

linux-profi.info

linux-profi.net

DNS History

14 records (8 active, 6 former)

○NS28-70.linux-profi.net2020-02-21 → 2026-03-28 · 5 obs

○ 2017-03-24 08:15:46
● 2020-02-21 11:51:34
● 2026-03-28 15:45:06
○ 2026-06-25 22:08:16
○ 2026-08-10 17:16:46

○NSdns1.linux-profi.com2015-07-22 → 2026-03-28 · 4 obs

● 2015-07-22 20:20:52
● 2026-03-28 15:45:06
○ 2026-06-25 22:08:16
○ 2026-08-10 17:16:46

○NSdns1.net-base.de2015-07-22 → 2026-03-28 · 4 obs

● 2015-07-22 20:20:52
● 2026-03-28 15:45:06
○ 2026-06-25 22:08:16
○ 2026-08-10 17:16:46

○NSdns2.net-base.de2015-07-22 → 2026-03-28 · 4 obs

● 2015-07-22 20:20:52
● 2026-03-28 15:45:06
○ 2026-06-25 22:08:16
○ 2026-08-10 17:16:46

○NSmail.linux-profi.net2015-07-22 → 2017-03-24 · 4 obs

● 2015-07-22 20:20:52
● 2017-03-24 08:15:46
○ 2020-02-21 11:51:34
○ 2026-08-10 17:16:46

●NSnb-ns-001.rzfr.de2026-06-25 → 2026-08-10 · 3 obs

○ 2026-03-28 15:45:06
● 2026-06-25 22:08:16
● 2026-08-10 17:16:46

●NSnb-ns-002.rzfr.de2026-06-25 → 2026-08-10 · 3 obs

○ 2026-03-28 15:45:06
● 2026-06-25 22:08:16
● 2026-08-10 17:16:46

●NSnb-ns-003.rzfr.de2026-06-25 → 2026-08-10 · 3 obs

○ 2026-03-28 15:45:06
● 2026-06-25 22:08:16
● 2026-08-10 17:16:46

●NSnb-ns-004.linux-profi.com2026-06-25 → 2026-08-10 · 3 obs

○ 2026-03-28 15:45:06
● 2026-06-25 22:08:16
● 2026-08-10 17:16:46

●MX28-70.rzfr.de2015-07-22 → 2026-08-10 · 2 obs

● 2015-07-22 20:20:52
● 2026-08-10 17:16:46

●MXmx01.rzfr.de2015-07-22 → 2026-08-10 · 2 obs

● 2015-07-22 20:20:52
● 2026-08-10 17:16:46

●MXmx02.rzfr.de2015-07-22 → 2026-08-10 · 2 obs

● 2015-07-22 20:20:52
● 2026-08-10 17:16:46

○A213.214.28.702015-07-22 → 2026-03-28 · 4 obs

● 2015-07-22 20:20:52
● 2026-03-28 15:45:06
○ 2026-06-25 22:08:16
○ 2026-08-10 17:16:46

●A213.214.28.842026-06-25 → 2026-08-10 · 3 obs

○ 2026-03-28 15:45:06
● 2026-06-25 22:08:16
● 2026-08-10 17:16:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
linux-profi.net	nb-ns-001.rzfr.de, nb-ns-002.rzfr.de, nb-ns-003.rzfr.de	-

✅ Authoritative Response

Server:87.106.239.17

NS records: nb-ns-001.rzfr.de, nb-ns-002.rzfr.de, nb-ns-003.rzfr.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for linux-profi.net (unsigned zone)

⏱️ Timing

Total: 754ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`213.214.28.84`
NS	4	`nb-ns-004.linux-profi.com, nb-ns-002.rzfr.de...`
MX	3	`mx01.rzfr.de (pri: 10), 28-70.rzfr.de (pri: 90)...`
TXT	1	`v=spf1 a mx -all`
SOA	1	`nb-ns-001.rzfr.de hostmaster.rzfr.de`

Analysis

Hierarchy

linux-profi.net serves as the parent of 28-70.linux-profi.net and mail.linux-profi.net.

IP Addresses

linux-profi.net has exactly one IP address — 213.214.28.84.

rzfr.de, juedische-gemeinde-freiburg.de, nb-web-001.rzfr.de plus two other host names have IP numbers in common with linux-profi.net.

Name Servers

Four name servers handle the delegation for linux-profi.net: nb-ns-004.linux-profi.com, nb-ns-001.rzfr.de, nb-ns-002.rzfr.de and nb-ns-003.rzfr.de.

The name servers of linux-profi.net overlap at least partially with those of other domains — among them uhgz.de, linux-profi.info, homelearning.de and two more.

Four host names, each with one IP address: nb-ns-004.linux-profi.com has 104.219.42.123, nb-ns-001.rzfr.de has 213.214.28.111, nb-ns-002.rzfr.de has 87.106.239.17 and nb-ns-003.rzfr.de has 213.214.27.17.

Mail Servers

Mail for linux-profi.net is routed through three mail servers — 28-70.rzfr.de, mx01.rzfr.de and mx02.rzfr.de.

At least some of the mail servers used by linux-profi.net are shared with other domains: immobilien-in-vae.de, cm-rental.de, silver-fleet.de and two others among them.

These mail servers are often deployed together with 28-40.rzfr.de, 28-54.rzfr.de, 28-51.rzfr.de and 7 other mail servers.

Three hostnames, one IP address apiece: 28-70.rzfr.de resolves to 213.214.28.70, mx01.rzfr.de resolves to 213.214.30.3 and mx02.rzfr.de resolves to 213.214.27.25.