coursemat.com - dns.ninja

`coursemat.com`

DNSSEC	⚠️ Not signed
A	74.208.236.126^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
		PTR	`74-208-236-126.elastic-ssl.ui-r.com`
NS	`ns1038.ui-dns.org` ⭐
		A	2001:8d8:fe:53:0:d9a0:5326:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1038.ui-dns.org`
		A	217.160.83.38^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1038.ui-dns.org`
NS	`ns1038.ui-dns.biz`
		A	2001:8d8:fe:53:0:d9a0:5126:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1038.ui-dns.biz`
		A	217.160.81.38^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1038.ui-dns.biz`
NS	`ns1038.ui-dns.com`
		A	2001:8d8:fe:53:0:d9a0:5226:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1038.ui-dns.com`
		A	217.160.82.38^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1038.ui-dns.com`
NS	`ns1038.ui-dns.de`
		A	2001:8d8:fe:53:0:d9a0:5026:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1038.ui-dns.de`
		A	217.160.80.38^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1038.ui-dns.de`
MX	`mx00.ionos.com` ⭐
		A	74.208.5.3^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
			PTR	`mx00.perfora.net`
MX	`mx01.ionos.com` ⭐
		A	74.208.5.21^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
			PTR	`mx01.perfora.net`
TXT	`v=spf1 include:_spf-us.ionos.com ~all`
SOA	`ns1038.ui-dns.org`hostmaster@1and1.com 2016-07-25 #3

`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=1781725325

Same first word

coursemat.com

Similar names

DNS History

13 records (7 active, 6 former)

●NSns1038.ui-dns.biz2026-03-30 → 2026-06-17 · 3 obs

○ 2017-09-30 21:16:56
● 2026-03-30 01:40:38
● 2026-06-17 20:09:56

●NSns1038.ui-dns.com2026-03-30 → 2026-06-17 · 3 obs

○ 2017-09-30 21:16:56
● 2026-03-30 01:40:38
● 2026-06-17 20:09:56

●NSns1038.ui-dns.de2026-03-30 → 2026-06-17 · 3 obs

○ 2017-09-30 21:16:56
● 2026-03-30 01:40:38
● 2026-06-17 20:09:56

●NSns1038.ui-dns.org2026-03-30 → 2026-06-17 · 3 obs

○ 2017-09-30 21:16:56
● 2026-03-30 01:40:38
● 2026-06-17 20:09:56

○NSns29.1and1.com2015-08-07 → 2017-09-30 · 4 obs

● 2015-08-07 03:18:18
● 2017-09-30 21:16:56
○ 2026-03-30 01:40:38
○ 2026-06-17 20:09:56

○NSns30.1and1.com2015-08-07 → 2017-09-30 · 4 obs

● 2015-08-07 03:18:18
● 2017-09-30 21:16:56
○ 2026-03-30 01:40:38
○ 2026-06-17 20:09:56

○MXmx00.1and1.com2015-08-07 → 2017-09-30 · 4 obs

● 2015-08-07 03:18:18
● 2017-09-30 21:16:56
○ 2026-03-30 01:40:38
○ 2026-06-17 20:09:56

●MXmx00.ionos.com2026-03-30 → 2026-06-17 · 3 obs

○ 2017-09-30 21:16:56
● 2026-03-30 01:40:38
● 2026-06-17 20:09:56

○MXmx01.1and1.com2015-08-07 → 2017-09-30 · 4 obs

● 2015-08-07 03:18:18
● 2017-09-30 21:16:56
○ 2026-03-30 01:40:38
○ 2026-06-17 20:09:56

●MXmx01.ionos.com2026-03-30 → 2026-06-17 · 3 obs

○ 2017-09-30 21:16:56
● 2026-03-30 01:40:38
● 2026-06-17 20:09:56

○A216.250.121.402016-08-08 → 2017-09-30 · 5 obs

○ 2016-03-26 13:17:06
● 2016-08-08 04:27:26
● 2017-09-30 21:16:56
○ 2026-03-30 01:40:38
○ 2026-06-17 20:09:56

●A74.208.236.1262026-03-30 → 2026-06-17 · 3 obs

○ 2017-09-30 21:16:56
● 2026-03-30 01:40:38
● 2026-06-17 20:09:56

○A74.208.29.1942015-08-07 → 2016-03-26 · 4 obs

● 2015-08-07 03:18:18
● 2016-03-26 13:17:06
○ 2016-08-08 04:27:26
○ 2026-06-17 20:09:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
coursemat.com	ns1038.ui-dns.de, ns1038.ui-dns.biz, ns1038.ui-dns.org, ns1038.ui-dns.com	2 records

✅ Authoritative Response

Server:217.160.80.38

NS records: ns1038.ui-dns.de, ns1038.ui-dns.biz, ns1038.ui-dns.org, ns1038.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coursemat.com (unsigned zone)

⏱️ Timing

Total: 561ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`74.208.236.126`
NS	4	`ns1038.ui-dns.de, ns1038.ui-dns.biz...`
MX	2	`mx01.ionos.com (pri: 10), mx00.ionos.com (pri: 10)`
TXT	1	`v=spf1 include:_spf-us.ionos.com ~all`
SOA	1	`ns1038.ui-dns.org hostmaster.1and1.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1038.ui-dns.com, ns1038.ui-dns.com)

Analysis

IP Addresses

coursemat.com points to a single IP number: 74.208.236.126.

Additional host names — s93159594.onlinehome.us, namaya.net, reyma.net and two others — share IP numbers with coursemat.com.

Name Servers

coursemat.com has four authoritative name servers: ns1038.ui-dns.biz, ns1038.ui-dns.com, ns1038.ui-dns.de and ns1038.ui-dns.org.

The name servers of coursemat.com overlap at least partially with those of other domains — among them modeboss.info, distronow.com, e-sinc.co.uk and two more.

These name servers commonly appear in delegations together with ns1072.ui-dns.org, ns1070.ui-dns.biz, ns1079.ui-dns.de and 4 other.

Each of the four hosts ns1038.ui-dns.biz, ns1038.ui-dns.com, ns1038.ui-dns.de and ns1038.ui-dns.org has two IP addresses. ns1038.ui-dns.biz points to 217.160.81.38 and 2001:8d8:fe:53:0:d9a0:5126:100. ns1038.ui-dns.com points to 217.160.82.38 and 2001:8d8:fe:53:0:d9a0:5226:100. ns1038.ui-dns.de points to 217.160.80.38 and 2001:8d8:fe:53:0:d9a0:5026:100. ns1038.ui-dns.org points to 217.160.83.38 and 2001:8d8:fe:53:0:d9a0:5326:100.

Mail Servers

coursemat.com has two mail servers: mx00.ionos.com and mx01.ionos.com.

coursemat.com shares the same mail server setup as other domains, including topdrawer.com, perfectlypressed.net, ecarcanada.com and two others.

Both mx00.ionos.com and mx01.ionos.com have a single IP address each — mx00.ionos.com resolves to 74.208.5.3 while mx01.ionos.com resolves to 74.208.5.21.