coursesys.com - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`coursesys.com`

DNSSEC	⚠️ Not signed
A	199.188.200.56^{🇺🇸 NAMCHEAP-PH199.188.200.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
		PTR	`server242-1.web-hosting.com`
NS	`dns1.namecheaphosting.com` ⭐
		A	2610:a1:1024::200^{🇺🇸 MAINT-ID-120082610:a1:1024::/48 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
		A	156.154.132.200^{🇺🇸 MAINT-ID-12008156.154.132.0/24 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
NS	`dns2.namecheaphosting.com`
		A	2610:a1:1025::200^{🇺🇸 MAINT-ID-120082610:a1:1025::/48 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
		A	156.154.133.200^{🇺🇸 MAINT-ID-12008156.154.133.0/24 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
MX	`mx1-hosting.jellyfish.systems` ⭐
		A	162.255.118.28^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`oxse3a.privateemail.com`
MX	`mx2-hosting.jellyfish.systems`⁽²⁰⁾
		A	162.255.118.29^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`oxse2b.privateemail.com`
MX	`mx3-hosting.jellyfish.systems`⁽³⁰⁾
		A	162.255.118.13^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`mx3-hosting.jellyfish.systems`
TXT	`MAltYWlsLmNvdXJzZXN5cy5jb20uCg==`
SOA	`dns1.namecheaphosting.com`cpanel@tech.namecheap.com serial=1715481877

`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=1787001744

Same first word

coursesys.com

Similar names

cursosyes.com

securosys.com

securosys.ch

securosys.swiss

Previous names

Next names

DNS History

11 records (6 active, 5 former)

●NSdns1.namecheaphosting.com2026-08-17 → 2026-08-17 · 3 obs

○ 2018-06-24 13:04:06
● 2026-08-17 17:09:22
● 2026-08-17 21:30:06

●NSdns2.namecheaphosting.com2026-08-17 → 2026-08-17 · 3 obs

○ 2018-06-24 13:04:06
● 2026-08-17 17:09:22
● 2026-08-17 21:30:06

○NSns77.domaincontrol.com2015-06-22 → 2018-06-24 · 4 obs

● 2015-06-22 17:47:38
● 2018-06-24 13:04:06
○ 2026-08-17 17:09:22
○ 2026-08-17 21:30:06

○NSns78.domaincontrol.com2015-06-22 → 2018-06-24 · 4 obs

● 2015-06-22 17:47:38
● 2018-06-24 13:04:06
○ 2026-08-17 17:09:22
○ 2026-08-17 21:30:06

○MXmailstore1.secureserver.net2015-06-22 → 2018-06-24 · 4 obs

● 2015-06-22 17:47:38
● 2018-06-24 13:04:06
○ 2026-08-17 17:09:22
○ 2026-08-17 21:30:06

●MXmx1-hosting.jellyfish.systems2026-08-17 → 2026-08-17 · 3 obs

○ 2018-06-24 13:04:06
● 2026-08-17 17:09:22
● 2026-08-17 21:30:06

●MXmx2-hosting.jellyfish.systems2026-08-17 → 2026-08-17 · 3 obs

○ 2018-06-24 13:04:06
● 2026-08-17 17:09:22
● 2026-08-17 21:30:06

●MXmx3-hosting.jellyfish.systems2026-08-17 → 2026-08-17 · 3 obs

○ 2018-06-24 13:04:06
● 2026-08-17 17:09:22
● 2026-08-17 21:30:06

○MXsmtp.secureserver.net2015-06-22 → 2018-06-24 · 4 obs

● 2015-06-22 17:47:38
● 2018-06-24 13:04:06
○ 2026-08-17 17:09:22
○ 2026-08-17 21:30:06

○A184.168.221.402015-06-22 → 2018-06-24 · 4 obs

● 2015-06-22 17:47:38
● 2018-06-24 13:04:06
○ 2026-08-17 17:09:22
○ 2026-08-17 21:30:06

●A199.188.200.562026-08-17 → 2026-08-17 · 3 obs

○ 2018-06-24 13:04:06
● 2026-08-17 17:09:22
● 2026-08-17 21:30:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
coursesys.com	dns1.namecheaphosting.com, dns2.namecheaphosting.com	4 records

✅ Authoritative Response

Server:156.154.132.200

NS records: dns1.namecheaphosting.com, dns2.namecheaphosting.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coursesys.com (unsigned zone)

⏱️ Timing

Total: 944ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`199.188.200.56`
NS	2	`dns1.namecheaphosting.com, dns2.namecheaphosting.com`
MX	3	`mx1-hosting.jellyfish.systems (pri: 10), mx2-hosting.jellyfish.systems (pri: 20)...`
TXT	1	`MAltYWlsLmNvdXJzZXN5cy5jb20uCg==`
SOA	1	`dns1.namecheaphosting.com cpanel.tech.na`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (dns1.namecheaphosting.com, dns1.namecheaphosting.com, dns2.namecheaphosting.com...)

Analysis

IP Addresses

coursesys.com resolves to one IP address: 199.188.200.56.

116profile.giaoxudatdo.net, com.htmlwww.giaoxudatdo.net, myremote.giaoxudatdo.net and two other host names share IP numbers with coursesys.com.

Name Servers

The NS records for coursesys.com delegate to dns1.namecheaphosting.com and dns2.namecheaphosting.com.

coursesys.com uses the same name servers as several other domains — among them ulanov.net, vacantlight.com, isacalahore.org and two more.

coursesys.com has at least partial name server overlap with other domains, such as rob-s.net, hub-ba.com, jobseekersnews.com and two others.

It is common to find these name servers paired with the name servers dns1.registrar-servers.com.

dns1.namecheaphosting.com resolves to 156.154.132.200 and 2610:a1:1024::200. Likewise, dns2.namecheaphosting.com resolves to 156.154.133.200 and 2610:a1:1025::200 — two IP addresses apiece.

Mail Servers

coursesys.com has three mail servers: mx1-hosting.jellyfish.systems, mx2-hosting.jellyfish.systems and mx3-hosting.jellyfish.systems.

coursesys.com has at least partial mail server overlap with other domains such as coachesdrivingschool.com, mura.africa, 1ife.xyz and two more.

mx1-hosting.jellyfish.systems has IP address 162.255.118.28, mx2-hosting.jellyfish.systems has IP address 162.255.118.29 and mx3-hosting.jellyfish.systems has IP address 162.255.118.13 — one address each.