courseco.com - dns.ninja

`courseco.com`

DNSSEC	⚠️ Not signed
A	69.167.161.119^{🇺🇸 LiquidWeb69.167.128.0/18 Liquid Web LLC 2703 Ena Dr. Lansing, MI 48917}
		PTR	`host6.1-2-1marketing.com`
NS	`ns20.digicertdns.com` ⭐ ⚠️ Not in parent delegation
		A	2600:1800:10::1:1f^{🇺🇸 Tiggee2600:1800:10::/48 DNS Made Easy anycast network}
			PTR	`ns20.digicertdns.com`
		A	208.94.148.223^{🇺🇸 Tiggee208.94.148.0/24 DNS Made Easy anycast network}
			PTR	`ns20.digicertdns.com`
NS	`ns10.dnsmadeeasy.com` ⚠️ Not in zone NS records
		A	2600:1800:10::1^{🇺🇸 Tiggee2600:1800:10::/48 DNS Made Easy anycast network}
			PTR	`ns10.dnsmadeeasy.com`
		A	208.94.148.4^{🇺🇸 Tiggee208.94.148.0/24 DNS Made Easy anycast network}
			PTR	`ns10.dnsmadeeasy.com`
NS	`ns11.dnsmadeeasy.com` ⚠️ Not in zone NS records
		A	2600:1801:11::1^{🇺🇸 Tiggee2600:1801:11::/48 DNS Made Easy anycast network}
			PTR	`ns11.dnsmadeeasy.com`
		A	208.80.124.4^{🇺🇸 Tiggee208.80.124.0/24 DNS Made Easy anycast network}
			PTR	`ns11.dnsmadeeasy.com`
NS	`ns12.dnsmadeeasy.com` ⚠️ Not in zone NS records
		A	2600:1802:12::1^{🇺🇸 Tiggee2600:1802:12::/48 DNS Made Easy anycast network}
			PTR	`ns12.dnsmadeeasy.com`
		A	208.80.126.4^{🇺🇸 Tiggee208.80.126.0/24 DNS Made Easy anycast network}
			PTR	`ns12.dnsmadeeasy.com`
NS	`ns13.dnsmadeeasy.com` ⚠️ Not in zone NS records
		A	2600:1801:13::1^{🇺🇸 Tiggee2600:1801:13::/48 DNS Made Easy anycast network}
			PTR	`ns13.dnsmadeeasy.com`
		A	208.80.125.4^{🇺🇸 Tiggee208.80.125.0/24 DNS Made Easy anycast network}
			PTR	`ns13.dnsmadeeasy.com`
NS	`ns14.dnsmadeeasy.com` ⚠️ Not in zone NS records
		A	2600:1802:14::1^{🇺🇸 Tiggee2600:1802:14::/48 DNS Made Easy anycast network}
			PTR	`ns14.dnsmadeeasy.com`
		A	208.80.127.4^{🇺🇸 Tiggee208.80.127.0/24 DNS Made Easy anycast network}
			PTR	`ns14.dnsmadeeasy.com`
NS	`ns15.dnsmadeeasy.com` ⚠️ Not in zone NS records
		A	2600:1800:15::1^{🇺🇸 Tiggee2600:1800:15::/48 DNS Made Easy anycast network}
			PTR	`ns15.dnsmadeeasy.com`
		A	208.94.149.4^{🇺🇸 Tiggee208.94.149.0/24 DNS Made Easy anycast network}
			PTR	`ns15.dnsmadeeasy.com`
NS	`ns21.digicertdns.com` ⚠️ Not in parent delegation
		A	2600:1801:11::1:1f^{🇺🇸 Tiggee2600:1801:11::/48 DNS Made Easy anycast network}
			PTR	`ns21.digicertdns.com`
		A	208.80.124.223^{🇺🇸 Tiggee208.80.124.0/24 DNS Made Easy anycast network}
NS	`ns22.digicertdns.com` ⚠️ Not in parent delegation
		A	2600:1802:12::1:1f^{🇺🇸 Tiggee2600:1802:12::/48 DNS Made Easy anycast network}
			PTR	`ns22.digicertdns.com`
		A	208.80.126.223^{🇺🇸 Tiggee208.80.126.0/24 DNS Made Easy anycast network}
NS	`ns23.digicertdns.net` ⚠️ Not in parent delegation
		A	2600:1801:13::1:1f^{🇺🇸 Tiggee2600:1801:13::/48 DNS Made Easy anycast network}
			PTR	`ns23.digicertdns.net`
		A	208.80.125.223^{🇺🇸 Tiggee208.80.125.0/24 DNS Made Easy anycast network}
NS	`ns24.digicertdns.net` ⚠️ Not in parent delegation
		A	2600:1802:14::1:1f^{🇺🇸 Tiggee2600:1802:14::/48 DNS Made Easy anycast network}
			PTR	`ns24.digicertdns.net`
		A	208.80.127.223^{🇺🇸 Tiggee208.80.127.0/24 DNS Made Easy anycast network}
NS	`ns25.digicertdns.net` ⚠️ Not in parent delegation
		A	2600:1800:15::1:1f^{🇺🇸 Tiggee2600:1800:15::/48 DNS Made Easy anycast network}
			PTR	`ns25.digicertdns.net`
		A	208.94.149.223^{🇺🇸 Tiggee208.94.149.0/24 DNS Made Easy anycast network}
MX	`courseco-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj0pr03cu01602.inbound.protection.outlook.com`
		A	2a01:111:f403:c92c::4^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-dm6pr05cu00404.inbound.protection.outlook.com`
		A	2a01:111:f403:c931::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sa9pr03cu00201.inbound.protection.outlook.com`
		A	2a01:111:f403:f905::4^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-dm2pr04cu00404.inbound.protection.outlook.com`
		A	52.101.8.51^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dm1pr04cu00203.inbound.protection.outlook.com`
		A	52.101.11.7^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sa9pr04cu00107.inbound.protection.outlook.com`
		A	52.101.41.58^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr02cu00102.inbound.protection.outlook.com`
		A	52.101.194.13^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch0pr04cu00605.inbound.protection.outlook.com`
TXT	`MS=ms61283952`
TXT	`v=spf1 include:spf.protection.outlook.com include:sendgrid.com ~all`
SOA	`ns20.digicertdns.com`dns@digicertdns.com 2009-01-01 #62

`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=1785288422

WOT: SAFE (60/100)

Same first word

courseco.com

courseco.co

Similar names

DNS History

20 records (14 active, 6 former)

●NSns10.dnsmadeeasy.com2015-08-16 → 2026-07-29 · 3 obs

○ 2008-08-26 15:20:42
● 2015-08-16 04:23:20
● 2026-07-29 01:57:28

●NSns11.dnsmadeeasy.com2015-08-16 → 2026-07-29 · 3 obs

○ 2008-08-26 15:20:42
● 2015-08-16 04:23:20
● 2026-07-29 01:57:28

●NSns12.dnsmadeeasy.com2015-08-16 → 2026-07-29 · 3 obs

○ 2008-08-26 15:20:42
● 2015-08-16 04:23:20
● 2026-07-29 01:57:28

●NSns13.dnsmadeeasy.com2015-08-16 → 2026-07-29 · 3 obs

○ 2008-08-26 15:20:42
● 2015-08-16 04:23:20
● 2026-07-29 01:57:28

●NSns14.dnsmadeeasy.com2015-08-16 → 2026-07-29 · 3 obs

○ 2008-08-26 15:20:42
● 2015-08-16 04:23:20
● 2026-07-29 01:57:28

●NSns15.dnsmadeeasy.com2015-08-16 → 2026-07-29 · 3 obs

○ 2008-08-26 15:20:42
● 2015-08-16 04:23:20
● 2026-07-29 01:57:28

●NSns20.digicertdns.com2026-02-22 → 2026-07-29 · 3 obs

○ 2015-08-16 04:23:20
● 2026-02-22 00:11:52
● 2026-07-29 01:57:28

●NSns21.digicertdns.com2026-02-22 → 2026-07-29 · 3 obs

○ 2015-08-16 04:23:20
● 2026-02-22 00:11:52
● 2026-07-29 01:57:28

●NSns22.digicertdns.com2026-02-22 → 2026-07-29 · 3 obs

○ 2015-08-16 04:23:20
● 2026-02-22 00:11:52
● 2026-07-29 01:57:28

●NSns23.digicertdns.net2026-02-22 → 2026-07-29 · 3 obs

○ 2015-08-16 04:23:20
● 2026-02-22 00:11:52
● 2026-07-29 01:57:28

●NSns24.digicertdns.net2026-02-22 → 2026-07-29 · 3 obs

○ 2015-08-16 04:23:20
● 2026-02-22 00:11:52
● 2026-07-29 01:57:28

●NSns25.digicertdns.net2026-02-22 → 2026-07-29 · 3 obs

○ 2015-08-16 04:23:20
● 2026-02-22 00:11:52
● 2026-07-29 01:57:28

○NSoak.forest.net2008-08-26 → 2008-08-26 · 3 obs

● 2008-08-26 15:20:42
○ 2015-08-16 04:23:20
○ 2026-07-29 01:57:28

○NSwillow.forest.net2008-08-26 → 2008-08-26 · 3 obs

● 2008-08-26 15:20:42
○ 2015-08-16 04:23:20
○ 2026-07-29 01:57:28

●MXcourseco-com.mail.protection.outlook.com2026-02-22 → 2026-07-29 · 3 obs

○ 2017-10-10 04:24:32
● 2026-02-22 00:11:52
● 2026-07-29 01:57:28

○MXmail.courseco.com2008-08-26 → 2008-08-26 · 3 obs

● 2008-08-26 15:20:42
○ 2015-08-16 04:23:20
○ 2026-07-29 01:57:28

○MXmx1.emailsrvr.com2015-08-16 → 2017-10-10 · 5 obs

○ 2008-08-26 15:20:42
● 2015-08-16 04:23:20
● 2017-10-10 04:24:32
○ 2026-02-22 00:11:52
○ 2026-07-29 01:57:28

○MXmx2.emailsrvr.com2015-08-16 → 2017-10-10 · 5 obs

○ 2008-08-26 15:20:42
● 2015-08-16 04:23:20
● 2017-10-10 04:24:32
○ 2026-02-22 00:11:52
○ 2026-07-29 01:57:28

○A216.168.43.1132008-08-26 → 2008-08-26 · 3 obs

● 2008-08-26 15:20:42
○ 2015-08-16 04:23:20
○ 2026-07-29 01:57:28

●A69.167.161.1192015-08-16 → 2026-07-29 · 3 obs

○ 2008-08-26 15:20:42
● 2015-08-16 04:23:20
● 2026-07-29 01:57:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, l.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net...	-
courseco.com	ns10.dnsmadeeasy.com, ns11.dnsmadeeasy.com, ns12.dnsmadeeasy.com, ns13.dnsmadeeasy.com...	12 records

✅ Authoritative Response

Server:208.80.125.4

NS records: ns10.dnsmadeeasy.com, ns11.dnsmadeeasy.com, ns12.dnsmadeeasy.com, ns13.dnsmadeeasy.com, ns14.dnsmadeeasy.com, ns15.dnsmadeeasy.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for courseco.com (unsigned zone)

⏱️ Timing

Total: 378ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`69.167.161.119`
NS	6	`ns23.digicertdns.net, ns24.digicertdns.net...`
MX	1	`courseco-com.mail.protection.outlook.com`
TXT	2	`MS=ms61283952, v=spf1 include:spf.protection.outlook.co`
SOA	1	`ns20.digicertdns.com dns.digicertdns.com`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (ns10.dnsmadeeasy.com, ns10.dnsmadeeasy.com, ns11.dnsmadeeasy.com...)

Analysis

IP Addresses

courseco.com resolves to one IP address: 69.167.161.119.

www.piquacountryclub.com, marriottgolfacademy.com, rcmail.rushcreek.com and two other host names share IP numbers with courseco.com.

Name Servers

courseco.com delegates authority to 12 name servers: ns20.digicertdns.com, ns21.digicertdns.com, ns22.digicertdns.com plus 9 other.

At least some of courseco.com's name servers are shared with other domains, for example mychristiancare.org, piazzaofeaston.com, rottnestgeneralstore.com.au and two more.

These name servers tend to co-occur with ns10.dnsmadeeasy.com, ns11.dnsmadeeasy.com, ns12.dnsmadeeasy.com and 6 other name servers in the same DNS delegations.

Hostnames that resolve to two IP addresses:

ns20.digicertdns.com directs traffic to 208.94.148.223 and 2600:1800:10::1:1f.

ns21.digicertdns.com directs traffic to 208.80.124.223 and 2600:1801:11::1:1f.

ns22.digicertdns.com directs traffic to 208.80.126.223 and 2600:1802:12::1:1f.

ns10.dnsmadeeasy.com directs traffic to 208.94.148.4 and 2600:1800:10::1.

ns11.dnsmadeeasy.com directs traffic to 208.80.124.4 and 2600:1801:11::1.

ns12.dnsmadeeasy.com directs traffic to 208.80.126.4 and 2600:1802:12::1.

ns13.dnsmadeeasy.com directs traffic to 208.80.125.4 and 2600:1801:13::1.

ns14.dnsmadeeasy.com directs traffic to 208.80.127.4 and 2600:1802:14::1.

ns15.dnsmadeeasy.com directs traffic to 208.94.149.4 and 2600:1800:15::1.

ns23.digicertdns.net directs traffic to 208.80.125.223 and 2600:1801:13::1:1f.

ns24.digicertdns.net directs traffic to 208.80.127.223 and 2600:1802:14::1:1f.