ctcourse.com - dns.ninja

`ctcourse.com`

DNSSEC	⚠️ Not signed
A	141.193.213.10^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
A	141.193.213.11^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
NS	`ns17.domaincontrol.com` ⭐
		A	2603:5:21c0::9^{🇺🇸 GODADDY-DNS2603:5:21c0::/44}
			PTR	`ns17.domaincontrol.com`
		A	97.74.108.9^{🇺🇸 GODADDY-DNS97.74.108.0/23}
			PTR	`ns17.domaincontrol.com`
NS	`ns18.domaincontrol.com`
		A	2603:5:22c0::9^{🇺🇸 GODADDY-DNS2603:5:22c0::/44}
			PTR	`ns18.domaincontrol.com`
		A	173.201.76.9^{🇺🇸 GODADDY-DNS173.201.76.0/23}
			PTR	`ns18.domaincontrol.com`
MX	`mx1-us1.ppe-hosted.com` ⭐
		A	67.231.154.162^{🇺🇸 Proofpoint67.231.154.0/24 Inc.}
			PTR	`mx1-us1.ppe-hosted.com`
		A	148.163.129.50^{🇺🇸 AS13916148.163.129.0/24 Proofpoint Inc.}
			PTR	`mx1-us1.ppe-hosted.com`
MX	`mx2-us1.ppe-hosted.com`⁽²⁰⁾
		A	67.231.154.163^{🇺🇸 Proofpoint67.231.154.0/24 Inc.}
			PTR	`mx2-us1.ppe-hosted.com`
		A	148.163.129.51^{🇺🇸 AS13916148.163.129.0/24 Proofpoint Inc.}
			PTR	`mx2-us1.ppe-hosted.com`
TXT	`brevo-code:44535550148679baa191b6632aaad25e`
TXT	`NETORG13312111.onmicrosoft.com`
TXT	`v=spf1 a:dispatch-us.ppe-hosted.com include:secureserver.net -all`
SOA	`ns17.domaincontrol.com`dns@jomax.net 2024-10-22 #0

`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=1784997797

Same first word

ctcourse.com

ctcourse.org.ua

Similar names

DNS History

15 records (6 active, 9 former)

○NSns1.bluehost.com2017-02-16 → 2017-02-16 · 3 obs

● 2017-02-16 18:05:00
○ 2020-01-04 22:49:10
○ 2026-07-25 16:53:52

○NSns1.vm1240.tmdcloud.com2020-01-04 → 2020-01-04 · 4 obs

○ 2017-02-16 18:05:00
● 2020-01-04 22:49:10
○ 2026-04-15 21:04:00
○ 2026-07-25 16:53:52

●NSns17.domaincontrol.com2026-04-15 → 2026-07-25 · 3 obs

○ 2020-01-04 22:49:10
● 2026-04-15 21:04:00
● 2026-07-25 16:53:52

●NSns18.domaincontrol.com2026-04-15 → 2026-07-25 · 3 obs

○ 2020-01-04 22:49:10
● 2026-04-15 21:04:00
● 2026-07-25 16:53:52

○NSns2.bluehost.com2017-02-16 → 2017-02-16 · 3 obs

● 2017-02-16 18:05:00
○ 2020-01-04 22:49:10
○ 2026-07-25 16:53:52

○NSns2.vm1240.tmdcloud.com2020-01-04 → 2020-01-04 · 4 obs

○ 2017-02-16 18:05:00
● 2020-01-04 22:49:10
○ 2026-04-15 21:04:00
○ 2026-07-25 16:53:52

○MXmail.ctcourse.com2017-02-16 → 2017-02-16 · 3 obs

● 2017-02-16 18:05:00
○ 2020-01-04 22:49:10
○ 2026-07-25 16:53:52

●MXmx1-us1.ppe-hosted.com2026-04-15 → 2026-07-25 · 3 obs

○ 2020-01-04 22:49:10
● 2026-04-15 21:04:00
● 2026-07-25 16:53:52

○MXmx1.tmdhosting.com2020-01-04 → 2020-01-04 · 4 obs

○ 2017-02-16 18:05:00
● 2020-01-04 22:49:10
○ 2026-04-15 21:04:00
○ 2026-07-25 16:53:52

●MXmx2-us1.ppe-hosted.com2026-04-15 → 2026-07-25 · 3 obs

○ 2020-01-04 22:49:10
● 2026-04-15 21:04:00
● 2026-07-25 16:53:52

○MXmx2.tmdhosting.com2020-01-04 → 2020-01-04 · 4 obs

○ 2017-02-16 18:05:00
● 2020-01-04 22:49:10
○ 2026-04-15 21:04:00
○ 2026-07-25 16:53:52

●A141.193.213.102026-04-15 → 2026-07-25 · 3 obs

○ 2020-01-04 22:49:10
● 2026-04-15 21:04:00
● 2026-07-25 16:53:52

●A141.193.213.112026-04-15 → 2026-07-25 · 3 obs

○ 2020-01-04 22:49:10
● 2026-04-15 21:04:00
● 2026-07-25 16:53:52

○A65.60.51.1972020-01-04 → 2020-01-04 · 4 obs

○ 2017-02-16 18:05:00
● 2020-01-04 22:49:10
○ 2026-04-15 21:04:00
○ 2026-07-25 16:53:52

○A66.147.244.722017-02-16 → 2017-02-16 · 3 obs

● 2017-02-16 18:05:00
○ 2020-01-04 22:49:10
○ 2026-07-25 16:53:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
ctcourse.com	ns17.domaincontrol.com, ns18.domaincontrol.com	4 records

✅ Authoritative Response

Server:97.74.108.9

NS records: ns17.domaincontrol.com, ns18.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctcourse.com (unsigned zone)

⏱️ Timing

Total: 134ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`141.193.213.10, 141.193.213.11`
NS	2	`ns17.domaincontrol.com, ns18.domaincontrol.com`
MX	2	`mx1-us1.ppe-hosted.com (pri: 10), mx2-us1.ppe-hosted.com (pri: 20)`
TXT	3	`brevo-code:44535550148679baa191b6632aaad, NETORG13312111.onmicrosoft.com...`
SOA	1	`ns17.domaincontrol.com dns.jomax.net`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns17.domaincontrol.com, ns17.domaincontrol.com, ns18.domaincontrol.com...)

Analysis

IP Addresses

ctcourse.com has two IP addresses: 141.193.213.10 and 141.193.213.11

Among the host names that share IP numbers with ctcourse.com are tjtraveladventures.com, iceskatingclasses.com, aiht.edu and two others.

Name Servers

ctcourse.com uses two name servers for its delegation: ns17.domaincontrol.com and ns18.domaincontrol.com.

ctcourse.com has the same name server delegation as a number of other domains, such as gescorp.com, samsbeauty.mobi, pentopaperconsulting.com and two more.

The two host names ns17.domaincontrol.com and ns18.domaincontrol.com each have a pair of IP addresses: ns17.domaincontrol.com has 97.74.108.9 and 2603:5:21c0::9, and ns18.domaincontrol.com has 173.201.76.9 and 2603:5:22c0::9.

Mail Servers

The MX records for ctcourse.com point to two mail servers: mx1-us1.ppe-hosted.com and mx2-us1.ppe-hosted.com.

ctcourse.com has the same mail server arrangement as a number of other domains, for example engeladvice.com, procompanies.com, customfencemichiana.com and two more.

ctcourse.com shares at least some of its mail servers with other domains — for example schoolrunner.org, lvplks.org, dhsolutions.net and two more.

The two host names mx1-us1.ppe-hosted.com and mx2-us1.ppe-hosted.com each have a pair of IP addresses: mx1-us1.ppe-hosted.com has 67.231.154.162 and 148.163.129.50, and mx2-us1.ppe-hosted.com has 67.231.154.163 and 148.163.129.51.