commcourse.com - dns.ninja

`commcourse.com`

DNSSEC	⚠️ Not signed
A	2602:ff23:0:8888::208^{🇺🇸 AS3980192602:ff23::/48 PNAP-PHX003 marla-1}
		PTR	`parked.dynu.com`
A	162.216.242.208^{🇺🇸 AS398019162.216.242.0/24 Dynu Systems Incorporated}
NS	`ns10.dynu.com` ⭐
		A	2600:3c0e::f03c:94ff:fe92:c82c^{🇳🇱 AKAMAI-LINODE-AP2600:3c0e::/32 Akamai Technologies}
			PTR	`ns10.dynu.com`
		A	172.233.50.75^{🇳🇱 AKAMAI-LINODE-AP172.233.32.0/19 Akamai Technologies}
			PTR	`ns10.dynu.com`
NS	`ns1.dynu.com` ⚠️ Not in zone NS records
		A	72.51.58.2^{🇨🇦 AS39801972.51.58.0/24 Dynu Systems Incorporated}
			PTR	`ns1.dynu.com`
NS	`ns11.dynu.com` ⚠️ Not in zone NS records
		A	2a01:7e01::f03c:92ff:fe16:814c^{🇩🇪 AKAMAI-LINODE-AP2a01:7e01::/32 Akamai Technologies}
			PTR	`ns11.dynu.com`
		A	172.104.238.151^{🇩🇪 AKAMAI-LINODE-AP172.104.224.0/19 Akamai Technologies}
			PTR	`ns11.dynu.com`
NS	`ns12.dynu.com` ⚠️ Not in zone NS records
		A	2a01:7e00::f03c:91ff:fedd:6af1^{🇬🇧 AKAMAI-LINODE-AP2a01:7e00::/32 Akamai Technologies}
			PTR	`ns12.dynu.com`
		A	139.162.195.230^{🇬🇧 AKAMAI-LINODE-AP139.162.192.0/19 Akamai Technologies}
			PTR	`ns12.dynu.com`
NS	`ns2.dynu.com`
		A	2602:ff23:0:8888::2^{🇺🇸 AS3980192602:ff23::/48 PNAP-PHX003 marla-1}
			PTR	`ns1.dynu.com`
		A	108.181.13.234^{🇺🇸 AS40676108.181.0.0/19}
			PTR	`ns2.dynu.com`
NS	`ns3.dynu.com`
		A	2605:9f80:4000:214::2^{🇺🇸 DEDICATED-HIVE2605:9f80:4000::/35}
			PTR	`ns3.dynu.com`
		A	162.251.164.146^{🇺🇸 DEDICATED-HIVE162.251.164.0/24 PNAP-LAX}
			PTR	`ns3.dynu.com`
NS	`ns4.dynu.com`
		A	2604:6600:2000:39::2^{🇺🇸 AS406762604:6600:2000::/48}
			PTR	`ns4.dynu.com`
		A	108.181.159.122^{🇺🇸 AS40676108.181.156.0/22}
			PTR	`ns4.dynu.com`
NS	`ns5.dynu.com`
		A	2605:9f80:c000:404::2^{🇺🇸 DEDICATED-HIVE2605:9f80:c000::/34 PNAP-NYM 63018}
			PTR	`ns5.dynu.com`
		A	216.105.169.98^{🇺🇸 DEDICATED-HIVE216.105.169.0/24 PNAP-LAX}
			PTR	`ns5.dynu.com`
NS	`ns6.dynu.com`
		A	2607:f8f8:631:8612::2^{🇺🇸 AS273232607:f8f8:600::/40}
			PTR	`ns6.dynu.com`
		A	173.0.55.138^{🇺🇸 AS27323173.0.55.0/24 Serverstadium - abuse@serverstadium.com}
			PTR	`ns6.dynu.com`
NS	`ns7.dynu.com` ⚠️ Not in zone NS records
		A	2400:8902::f03c:91ff:fee5:9f03^{🇯🇵 AKAMAI-LINODE-AP2400:8902::/32 Akamai Technologies}
			PTR	`ns7.dynu.com`
		A	139.162.105.137^{🇯🇵 AKAMAI-LINODE-AP139.162.96.0/19 Akamai Technologies}
			PTR	`ns7.dynu.com`
NS	`ns8.dynu.com` ⚠️ Not in zone NS records
		A	2400:8907::f03c:92ff:fe79:ad70^{🇦🇺 AKAMAI-LINODE-AP2400:8907::/32 Akamai Technologies}
			PTR	`ns8.dynu.com`
		A	172.105.178.214^{🇦🇺 AKAMAI-LINODE-AP172.105.160.0/19 Akamai Technologies}
			PTR	`ns8.dynu.com`
NS	`ns9.dynu.com` ⚠️ Not in zone NS records
		A	2400:8901::f03c:93ff:feed:6cc2^{🇸🇬 AKAMAI-LINODE-AP2400:8901::/32 Akamai Technologies}
			PTR	`ns9.dynu.com`
		A	45.118.133.11^{🇸🇬 AKAMAI-LINODE-AP45.118.132.0/22 Akamai Technologies}
			PTR	`ns9.dynu.com`
SOA	`ns1.dynu.com`administrator@dynu.com serial=1

`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=1785119992

Subdomains

mail.commcourse.com

Same first word

commcourse.com

Similar names

summercoco.com

commsource.mobi

DNS History

24 records (14 active, 10 former)

●NSns1.dynu.com2026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

○NSns1.parkingcrew.net2016-09-15 → 2017-06-19 · 5 obs

○ 2016-04-05 22:43:08
● 2016-09-15 11:35:42
● 2017-06-19 07:19:20
○ 2026-02-19 08:51:02
○ 2026-07-27 03:08:04

●NSns10.dynu.com2026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

●NSns11.dynu.com2026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

●NSns12.dynu.com2026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

●NSns2.dynu.com2026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

○NSns2.parkingcrew.net2016-09-15 → 2017-06-19 · 5 obs

○ 2016-04-05 22:43:08
● 2016-09-15 11:35:42
● 2017-06-19 07:19:20
○ 2026-02-19 08:51:02
○ 2026-07-27 03:08:04

●NSns3.dynu.com2026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

○NSns37.domaincontrol.com2015-06-11 → 2016-04-05 · 4 obs

● 2015-06-11 03:45:22
● 2016-04-05 22:43:08
○ 2016-09-15 11:35:42
○ 2026-07-27 03:08:04

○NSns38.domaincontrol.com2015-06-11 → 2016-04-05 · 4 obs

● 2015-06-11 03:45:22
● 2016-04-05 22:43:08
○ 2016-09-15 11:35:42
○ 2026-07-27 03:08:04

●NSns4.dynu.com2026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

●NSns5.dynu.com2026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

●NSns6.dynu.com2026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

●NSns7.dynu.com2026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

●NSns8.dynu.com2026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

●NSns9.dynu.com2026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

○MXmail.h-email.net2016-09-15 → 2017-06-19 · 5 obs

○ 2016-04-05 22:43:08
● 2016-09-15 11:35:42
● 2017-06-19 07:19:20
○ 2026-02-19 08:51:02
○ 2026-07-27 03:08:04

○MXmailstore1.secureserver.net2015-06-11 → 2016-04-05 · 4 obs

● 2015-06-11 03:45:22
● 2016-04-05 22:43:08
○ 2016-09-15 11:35:42
○ 2026-07-27 03:08:04

○MXsmtp.secureserver.net2015-06-11 → 2016-04-05 · 4 obs

● 2015-06-11 03:45:22
● 2016-04-05 22:43:08
○ 2016-09-15 11:35:42
○ 2026-07-27 03:08:04

●A162.216.242.2082026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

○A184.168.221.412015-06-11 → 2016-04-05 · 4 obs

● 2015-06-11 03:45:22
● 2016-04-05 22:43:08
○ 2016-09-15 11:35:42
○ 2026-07-27 03:08:04

○A185.53.177.62016-09-15 → 2016-09-15 · 4 obs

○ 2016-04-05 22:43:08
● 2016-09-15 11:35:42
○ 2017-06-19 07:19:20
○ 2026-07-27 03:08:04

○A185.53.178.62017-06-19 → 2017-06-19 · 4 obs

○ 2016-09-15 11:35:42
● 2017-06-19 07:19:20
○ 2026-02-19 08:51:02
○ 2026-07-27 03:08:04

●A2602:ff23:0:8888::2082026-02-19 → 2026-07-27 · 3 obs

○ 2017-06-19 07:19:20
● 2026-02-19 08:51:02
● 2026-07-27 03:08:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
commcourse.com	ns1.dynu.com, ns2.dynu.com, ns3.dynu.com, ns4.dynu.com...	23 records

✅ Authoritative Response

Server:108.181.13.234

NS records: ns1.dynu.com, ns2.dynu.com, ns3.dynu.com, ns4.dynu.com, ns5.dynu.com, ns6.dynu.com, ns7.dynu.com, ns8.dynu.com, ns9.dynu.com, ns10.dynu.com, ns11.dynu.com, ns12.dynu.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for commcourse.com (unsigned zone)

⏱️ Timing

Total: 646ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`162.216.242.208`
AAAA	1	`2602:ff23:0:8888::208`
NS	6	`ns6.dynu.com, ns5.dynu.com...`
SOA	1	`ns1.dynu.com administrator.dynu.com`

📌 Glue Records Collected

Total: 23

Out-of-bailiwick: 23 (ns1.dynu.com, ns2.dynu.com, ns2.dynu.com...)

Analysis

Hierarchy

The domain mail.commcourse.com falls under the parent commcourse.com.

IP Addresses

commcourse.com points to the IP addresses 162.216.242.208 and 2602:ff23:0:8888::208

Among the host names that share IP numbers with commcourse.com are loosestring-designs.com, dynuddns.net, mail.fuaicn.com and two others.

Name Servers

commcourse.com is served by 12 authoritative name servers — among them ns10.dynu.com, ns11.dynu.com, ns12.dynu.com and 9 others.

At least some of commcourse.com's name servers are shared with other domains, for example ddns.maydayoffice.kz, mail.sancb.org.za, onegenius.com and two more.

These name servers tend to co-occur with ns1.dynu.com, ns3.dynu.com, ns2.dynu.com and 6 other name servers in the same DNS delegations.

Hosts with two IP numbers each:

ns10.dynu.com resolves to two addresses: 172.233.50.75 and 2600:3c0e::f03c:94ff:fe92:c82c.

ns11.dynu.com resolves to two addresses: 172.104.238.151 and 2a01:7e01::f03c:92ff:fe16:814c.

ns12.dynu.com resolves to two addresses: 139.162.195.230 and 2a01:7e00::f03c:91ff:fedd:6af1.

ns2.dynu.com resolves to two addresses: 108.181.13.234 and 2602:ff23:0:8888::2.

ns3.dynu.com resolves to two addresses: 162.251.164.146 and 2605:9f80:4000:214::2.

ns4.dynu.com resolves to two addresses: 108.181.159.122 and 2604:6600:2000:39::2.

ns5.dynu.com resolves to two addresses: 216.105.169.98 and 2605:9f80:c000:404::2.

ns6.dynu.com resolves to two addresses: 173.0.55.138 and 2607:f8f8:631:8612::2.

ns7.dynu.com resolves to two addresses: 139.162.105.137 and 2400:8902::f03c:91ff:fee5:9f03.

ns8.dynu.com resolves to two addresses: 172.105.178.214 and 2400:8907::f03c:92ff:fe79:ad70.

ns9.dynu.com resolves to two addresses: 45.118.133.11 and 2400:8901::f03c:93ff:feed:6cc2.

Hosts that resolve to one IP address:

The hostname ns1.dynu.com resolves to 72.51.58.2.