`courseanalyzer.com`

DNSSEC	⚠️ Not signed
A	207.148.248.143^{🇺🇸 EIG-29873207.148.248.0/24}
NS	`ns.buydomains.com` ⭐ ⚠️ Not in zone NS records
		A	52.20.26.87^{🇺🇸 Amazon52.20.0.0/14 EC2 IAD prefix}
			PTR	`ec2-52-20-26-87.compute-1.amazonaws.com`
NS	`this-domain-for-sale.com` ⚠️ Not in zone NS records
		A	52.20.26.87^{🇺🇸 Amazon52.20.0.0/14 EC2 IAD prefix}
			PTR	`ec2-52-20-26-87.compute-1.amazonaws.com`
SOA	`ns.buydomains.com`hostmaster@buydomains.com 2015-09-17 #9

`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=1774402057

Same first word

courseanalyzer.com

DNS History

11 records (3 active, 8 former)

●NSns.buydomains.com2015-10-21 → 2026-03-25 · 3 obs

○ 2015-05-17 06:59:22
● 2015-10-21 17:59:12
● 2026-03-25 01:42:24

○NSns1.dsredirection.com2015-05-17 → 2015-05-17 · 3 obs

● 2015-05-17 06:59:22
○ 2015-10-21 17:59:12
○ 2026-03-25 01:42:24

○NSns2.dsredirection.com2015-05-17 → 2015-05-17 · 3 obs

● 2015-05-17 06:59:22
○ 2015-10-21 17:59:12
○ 2026-03-25 01:42:24

●NSthis-domain-for-sale.com2026-03-25 → 2026-03-25 · 2 obs

○ 2015-10-21 17:59:12
● 2026-03-25 01:42:24

○A141.8.225.1242015-12-27 → 2016-09-18 · 5 obs

○ 2015-10-21 17:59:12
● 2015-12-27 04:25:06
● 2016-09-18 16:21:42
○ 2017-11-03 23:14:44
○ 2026-03-25 01:42:24

●A207.148.248.1432017-11-03 → 2026-03-25 · 3 obs

○ 2016-09-18 16:21:42
● 2017-11-03 23:14:44
● 2026-03-25 01:42:24

○A208.73.210.2002015-05-17 → 2015-05-17 · 3 obs

● 2015-05-17 06:59:22
○ 2015-10-21 17:59:12
○ 2026-03-25 01:42:24

○A208.73.210.2142015-05-17 → 2015-05-17 · 3 obs

● 2015-05-17 06:59:22
○ 2015-10-21 17:59:12
○ 2026-03-25 01:42:24

○A208.73.210.2172015-05-17 → 2015-05-17 · 3 obs

● 2015-05-17 06:59:22
○ 2015-10-21 17:59:12
○ 2026-03-25 01:42:24

○A208.73.211.1782015-05-17 → 2015-05-17 · 3 obs

● 2015-05-17 06:59:22
○ 2015-10-21 17:59:12
○ 2026-03-25 01:42:24

○A50.63.202.1042015-10-21 → 2015-10-21 · 4 obs

○ 2015-05-17 06:59:22
● 2015-10-21 17:59:12
○ 2015-12-27 04:25:06
○ 2026-03-25 01:42:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net, k.gtld-servers.net...	-
courseanalyzer.com	ns.buydomains.com, this-domain-for-sale.com	2 records

✅ Authoritative Response

Server:52.20.26.87

NS records: ns.buydomains.com, this-domain-for-sale.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for courseanalyzer.com (unsigned zone)

⏱️ Timing

Total: 63ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`207.148.248.143`
SOA	1	`ns.buydomains.com hostmaster.buydomains.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns.buydomains.com, this-domain-for-sale.com)

Analysis

IP Addresses

courseanalyzer.com points to a single IP: 207.148.248.143.

Other host names, for instance glennlong.com, zeninteractive.com, alfabetica.com, waxingon.com and sevinus.com share IP numbers with courseanalyzer.com.

Name Servers

Two name servers this-domain-for-sale.com and ns.buydomains.com handle delegation for courseanalyzer.com.

courseanalyzer.com uses the same name server setup as other domains, for example ultralondon.com, focusquality.com, dtic.net, tealmoon.com and newnet.org.

Host names with one IP number

Host name this-domain-for-sale.com points to 52.20.26.87

Host name ns.buydomains.com points to 52.20.26.87

Host names that point to 52.20.26.87: this-domain-for-sale.com and ns.buydomains.com

courseanalyzer.com - robtex.com