`usabilityeducation.com`

DNSSEC	⚠️ Not signed
A	85.13.138.41^{🇩🇪 NMM-AS85.13.138.0/24 Neue Medien Muennich}
		PTR	`dd17422.kasserver.com`
NS	`ns5.kasserver.com` ⭐
		A	85.13.128.3^{🇩🇪 NMM-AS85.13.128.0/24 Neue Medien Muennich}
			PTR	`ns5.kasserver.com`
NS	`ns6.kasserver.com`
		A	85.13.159.101^{🇩🇪 NMM-AS85.13.159.0/24 Neue Medien Muennich}
			PTR	`ns6.kasserver.com`
MX	`w0079bd8.kasserver.com` ⭐
		A	85.13.138.41^{🇩🇪 NMM-AS85.13.138.0/24 Neue Medien Muennich}
			PTR	`dd17422.kasserver.com`
TXT	`v=spf1 a mx include:spf.kasserver.com ~all`
SOA	`ns5.kasserver.com`hostmaster@kasserver.com serial=2512091327

`com`

	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=1774907687

Subdomains

mail.usabilityeducation.com

Same first word

usabilityeducation.com

DNS History

7 records (4 active, 3 former)

●NSns5.kasserver.com2008-03-13 → 2026-03-30 · 2 obs

● 2008-03-13 23:33:36
● 2026-03-30 22:03:26

●NSns6.kasserver.com2008-03-13 → 2026-03-30 · 2 obs

● 2008-03-13 23:33:36
● 2026-03-30 22:03:26

○MXmail.usabilityeducation.com2008-03-13 → 2016-11-28 · 4 obs

● 2008-03-13 23:33:36
● 2016-11-28 00:22:26
○ 2017-09-03 08:13:32
○ 2026-03-30 22:03:26

●MXw0079bd8.kasserver.com2017-09-03 → 2026-03-30 · 3 obs

○ 2016-11-28 00:22:26
● 2017-09-03 08:13:32
● 2026-03-30 22:03:26

○A85.13.129.1702015-05-11 → 2017-09-03 · 5 obs

○ 2008-03-13 23:33:36
● 2015-05-11 22:49:06
● 2017-09-03 08:13:32
○ 2026-03-26 19:05:14
○ 2026-03-30 22:03:26

○A85.13.136.202008-03-13 → 2008-03-13 · 3 obs

● 2008-03-13 23:33:36
○ 2015-05-11 22:49:06
○ 2026-03-30 22:03:26

●A85.13.138.412026-03-26 → 2026-03-30 · 3 obs

○ 2017-09-03 08:13:32
● 2026-03-26 19:05:14
● 2026-03-30 22:03:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, i.gtld-servers.net, h.gtld-servers.net, b.gtld-servers.net...	-
usabilityeducation.com	ns5.kasserver.com, ns6.kasserver.com	2 records

✅ Authoritative Response

Server:85.13.128.3

NS records: ns5.kasserver.com, ns6.kasserver.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for usabilityeducation.com (unsigned zone)

⏱️ Timing

Total: 295ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`85.13.138.41`
NS	2	`ns6.kasserver.com, ns5.kasserver.com`
MX	1	`w0079bd8.kasserver.com (pri: 10)`
TXT	1	`v=spf1 a mx include:spf.kasserver.com ~a`
SOA	1	`ns5.kasserver.com hostmaster.kasserver.c`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns5.kasserver.com, ns6.kasserver.com)

Analysis

Hierarchy

usabilityeducation.com is the parent of mail.usabilityeducation.com.

IP Addresses

usabilityeducation.com resolves to one IP number: 85.13.138.41.

other host names including masterpopp.com, lehrbach.net, used-technology.com, w007ad75.kasserver.com and mail.cubonovo.de share IP numbers with usabilityeducation.com.

Name Servers

usabilityeducation.com is delegated to two name servers ns5.kasserver.com and ns6.kasserver.com.

usabilityeducation.com shares the same name server setup as other domains, for instance kuhbier.eu, sound-creatures.com, phoenixpix.at, myarzt.de and ngrick.de.

usabilityeducation.com at least partially shares name servers with other domains, for instance hmrt.de, ieweg.de, geldautomaten-essen.de and fanscan.de.

These name servers are commonly used alongside a-dns-service.de and ns3.kas-dns-server.de.

Host names with one IP number:

ns5.kasserver.com points to 85.13.128.3

ns6.kasserver.com points to 85.13.159.101

Mail Servers

usabilityeducation.com is handled by a single mail server, w0079bd8.kasserver.com.

w0079bd8.kasserver.com resolves to IP 85.13.138.41.

usabilityeducation.com - robtex.com