courstack.com - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`courstack.com`

	CNAME	`exp.gname.net`
	DNSSEC	⚠️ Not signed
	A	172.65.211.209^{🇺🇸 Cloudflare172.65.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}

`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=1788798348

Same first word

courstack.com

Similar names

rackscout.net

cusotrack.com

cuackstor.org

cuackstor.net

cuackstor.com

accustork.com

coatrucks.com

aoctrucks.fr

Previous names

Next names

DNS History

15 records (3 active, 12 former)

○NSbrenna.ns.cloudflare.com2026-08-26 → 2026-08-26 · 4 obs

○ 2017-09-17 17:45:36
● 2026-08-26 11:51:40
○ 2026-09-07 16:34:24
○ 2026-09-07 16:34:26

○NSdns10.hichina.com2016-12-15 → 2017-09-17 · 4 obs

● 2016-12-15 03:46:02
● 2017-09-17 17:45:36
○ 2026-08-26 11:51:40
○ 2026-09-07 16:34:26

○NSdns9.hichina.com2016-12-15 → 2017-09-17 · 4 obs

● 2016-12-15 03:46:02
● 2017-09-17 17:45:36
○ 2026-08-26 11:51:40
○ 2026-09-07 16:34:26

●NSexpire1.gname-dns.com2026-09-07 → 2026-09-07 · 3 obs

○ 2026-08-26 11:51:40
● 2026-09-07 16:34:24
● 2026-09-07 16:34:26

●NSexpire2.gname-dns.com2026-09-07 → 2026-09-07 · 3 obs

○ 2026-08-26 11:51:40
● 2026-09-07 16:34:24
● 2026-09-07 16:34:26

○NSricardo.ns.cloudflare.com2026-08-26 → 2026-08-26 · 4 obs

○ 2017-09-17 17:45:36
● 2026-08-26 11:51:40
○ 2026-09-07 16:34:24
○ 2026-09-07 16:34:26

○A104.21.12.192026-08-26 → 2026-08-26 · 3 obs

● 2026-08-26 11:51:40
○ 2026-08-31 19:15:40
○ 2026-09-07 16:34:26

○A172.67.151.752026-08-26 → 2026-08-26 · 3 obs

● 2026-08-26 11:51:40
○ 2026-08-31 19:15:40
○ 2026-09-07 16:34:26

○A188.114.96.02026-08-31 → 2026-08-31 · 4 obs

○ 2026-08-26 11:51:40
● 2026-08-31 19:15:40
○ 2026-09-07 16:34:24
○ 2026-09-07 16:34:26

○A188.114.97.02026-08-31 → 2026-08-31 · 4 obs

○ 2026-08-26 11:51:40
● 2026-08-31 19:15:40
○ 2026-09-07 16:34:24
○ 2026-09-07 16:34:26

○A2606:4700:3036::6815:c132026-08-26 → 2026-08-26 · 3 obs

● 2026-08-26 11:51:40
○ 2026-08-31 19:15:40
○ 2026-09-07 16:34:26

○A2606:4700:3037::ac43:974b2026-08-26 → 2026-08-26 · 3 obs

● 2026-08-26 11:51:40
○ 2026-08-31 19:15:40
○ 2026-09-07 16:34:26

○A2a06:98c1:3120::2026-08-31 → 2026-08-31 · 4 obs

○ 2026-08-26 11:51:40
● 2026-08-31 19:15:40
○ 2026-09-07 16:34:24
○ 2026-09-07 16:34:26

○A2a06:98c1:3121::2026-08-31 → 2026-08-31 · 4 obs

○ 2026-08-26 11:51:40
● 2026-08-31 19:15:40
○ 2026-09-07 16:34:24
○ 2026-09-07 16:34:26

●CNAMEexp.gname.net2026-09-07 → 2026-09-07 · 2 obs

● 2026-09-07 16:34:24
● 2026-09-07 16:34:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, j.gtld-servers.net, f.gtld-servers.net, b.gtld-servers.net...	-
courstack.com	expire1.gname-dns.com, expire2.gname-dns.com	2 records

✅ Authoritative Response

Server:172.64.53.233

NS records: expire1.gname-dns.com, expire2.gname-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for courstack.com (unsigned zone)

⏱️ Timing

Total: 888ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`expire1.gname-dns.com, expire2.gname-dns.com`
CNAME	1	`exp.gname.net`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (expire1.gname-dns.com, expire2.gname-dns.com)

Analysis

IP Addresses

courstack.com directs to one IP number, which is 172.65.211.209.

Among the host names that share IP numbers with courstack.com are 73f.net, lydsxh.com, 75425020.xyz and two others.