`cursosmaster.com`

DNSSEC	⚠️ Not signed
A	2600:1f18:4ae:c605:dd5d:b838:5816:d7fb^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	2600:1f18:4ae:c606:78d4:4260:db4e:aeee^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	13.223.25.84^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
A	54.243.117.197^{🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix}
NS	`ns1.namebrightdns.com` ⭐
		A	2600:1f18:683a:ae1a:111c:4291:9c72:702d^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:8b2d:453e:ca75:106e^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:e0e8:f080:7325:d0f3^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.89.244.178^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-89-244-178.compute-1.amazonaws.com`
		A	54.234.54.230^{🇺🇸 Amazon54.234.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-234-54-230.compute-1.amazonaws.com`
NS	`domain-for-sale.hugedomainsdns.com`
		A	2600:1f18:683a:ae1a:7d0c:28f5:ebc9:1ac8^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:94d8:6b55:f3b0:2b6e^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:dc6d:2ff5:8ede:179e^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:ee21:228d:fab6:9af5^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	54.90.178.80^{🇺🇸 Amazon54.90.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-90-178-80.compute-1.amazonaws.com`
		A	54.157.217.233^{🇺🇸 Amazon54.156.0.0/14 EC2 IAD prefix}
			PTR	`ec2-54-157-217-233.compute-1.amazonaws.com`
		A	54.197.162.93^{🇺🇸 Amazon54.196.0.0/15 EC2 IAD 54.196.0.0/15}
			PTR	`ec2-54-197-162-93.compute-1.amazonaws.com`
		A	98.92.6.123^{🇺🇸 Amazon98.88.0.0/13 EC2 IAD prefix}
			PTR	`ec2-98-92-6-123.compute-1.amazonaws.com`
NS	`forsale.hugedomainsdns.com`
		A	2600:1f18:683a:ae1a:1778:6ee0:530:c411^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:7db3:b04b:3783:ac2^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:7758:b87:5dc2:23a9^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:ef75:e8e2:9a50:1e79^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.90.68.229^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-90-68-229.compute-1.amazonaws.com`
		A	35.171.187.120^{🇺🇸 Amazon35.168.0.0/13 EC2 IAD prefix}
			PTR	`ec2-35-171-187-120.compute-1.amazonaws.com`
		A	54.145.2.185^{🇺🇸 Amazon54.144.0.0/14 EC2 IAD NAT prefix}
			PTR	`ec2-54-145-2-185.compute-1.amazonaws.com`
		A	100.31.153.57^{🇺🇸 Amazon100.24.0.0/13 EC2 IAD prefix}
			PTR	`ec2-100-31-153-57.compute-1.amazonaws.com`
TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
TXT	`v=spf1 -all`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-04-24 #1

`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=1777093761

Same first word

cursosmaster.com

Similar names

smartcourses.net

mastercursos.net

smartcourses.com

smartsources.net

DNS History

26 records (7 active, 19 former)

●NSdomain-for-sale.hugedomainsdns.com2026-04-05 → 2026-04-25 · 3 obs

○ 2020-04-07 07:54:50
● 2026-04-05 19:29:34
● 2026-04-25 05:11:30

●NSforsale.hugedomainsdns.com2026-04-05 → 2026-04-25 · 3 obs

○ 2020-04-07 07:54:50
● 2026-04-05 19:29:34
● 2026-04-25 05:11:30

●NSns1.namebrightdns.com2015-07-15 → 2026-04-25 · 6 obs

● 2015-07-15 16:14:30
● 2016-02-26 11:23:26
○ 2016-06-27 05:46:34
○ 2020-04-07 07:54:50
● 2026-04-05 19:29:34
● 2026-04-25 05:11:30

○NSns2.namebrightdns.com2015-07-15 → 2016-02-26 · 4 obs

● 2015-07-15 16:14:30
● 2016-02-26 11:23:26
○ 2016-06-27 05:46:34
○ 2026-04-25 05:11:30

○NSnsg1.namebrightdns.com2016-06-27 → 2020-04-07 · 6 obs

○ 2016-02-26 11:23:26
● 2016-06-27 05:46:34
○ 2017-02-09 10:05:04
● 2020-04-07 07:54:50
○ 2026-04-05 19:29:34
○ 2026-04-25 05:11:30

○NSnsg2.namebrightdns.com2016-06-27 → 2020-04-07 · 6 obs

○ 2016-02-26 11:23:26
● 2016-06-27 05:46:34
○ 2017-02-09 10:05:04
● 2020-04-07 07:54:50
○ 2026-04-05 19:29:34
○ 2026-04-25 05:11:30

○NSnst1.namebrightdns.com2017-02-09 → 2017-02-09 · 4 obs

○ 2016-06-27 05:46:34
● 2017-02-09 10:05:04
○ 2020-04-07 07:54:50
○ 2026-04-25 05:11:30

○NSnst2.namebrightdns.com2017-02-09 → 2017-02-09 · 4 obs

○ 2016-06-27 05:46:34
● 2017-02-09 10:05:04
○ 2020-04-07 07:54:50
○ 2026-04-25 05:11:30

○MXanmail.namebrightmail.com2015-07-15 → 2015-07-15 · 3 obs

● 2015-07-15 16:14:30
○ 2015-11-14 02:34:20
○ 2026-04-25 05:11:30

○A107.23.42.502016-02-26 → 2016-02-26 · 4 obs

○ 2015-11-14 02:34:20
● 2016-02-26 11:23:26
○ 2016-06-27 05:46:34
○ 2026-04-25 05:11:30

●A13.223.25.842026-04-05 → 2026-04-25 · 3 obs

○ 2020-04-07 07:54:50
● 2026-04-05 19:29:34
● 2026-04-25 05:11:30

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-04-05 → 2026-04-25 · 3 obs

○ 2020-04-07 07:54:50
● 2026-04-05 19:29:34
● 2026-04-25 05:11:30

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-04-05 → 2026-04-25 · 3 obs

○ 2020-04-07 07:54:50
● 2026-04-05 19:29:34
● 2026-04-25 05:11:30

○A34.199.151.1632017-02-09 → 2017-02-09 · 4 obs

○ 2016-06-27 05:46:34
● 2017-02-09 10:05:04
○ 2020-04-07 07:54:50
○ 2026-04-25 05:11:30

○A52.20.154.32017-02-09 → 2017-02-09 · 4 obs

○ 2016-06-27 05:46:34
● 2017-02-09 10:05:04
○ 2020-04-07 07:54:50
○ 2026-04-25 05:11:30

○A52.20.172.332015-11-14 → 2015-11-14 · 4 obs

○ 2015-07-15 16:14:30
● 2015-11-14 02:34:20
○ 2016-02-26 11:23:26
○ 2026-04-25 05:11:30

○A52.200.243.1232016-06-27 → 2016-06-27 · 4 obs

○ 2016-02-26 11:23:26
● 2016-06-27 05:46:34
○ 2017-02-09 10:05:04
○ 2026-04-25 05:11:30

○A52.73.136.1402016-02-26 → 2016-02-26 · 4 obs

○ 2015-11-14 02:34:20
● 2016-02-26 11:23:26
○ 2016-06-27 05:46:34
○ 2026-04-25 05:11:30

○A54.152.144.2432016-06-27 → 2016-06-27 · 4 obs

○ 2016-02-26 11:23:26
● 2016-06-27 05:46:34
○ 2017-02-09 10:05:04
○ 2026-04-25 05:11:30

○A54.174.31.2542015-07-15 → 2015-07-15 · 3 obs

● 2015-07-15 16:14:30
○ 2017-02-09 10:05:04
○ 2026-04-25 05:11:30

○A54.208.74.2152015-07-15 → 2015-07-15 · 3 obs

● 2015-07-15 16:14:30
○ 2017-02-09 10:05:04
○ 2026-04-25 05:11:30

●A54.243.117.1972026-04-05 → 2026-04-25 · 3 obs

○ 2020-04-07 07:54:50
● 2026-04-05 19:29:34
● 2026-04-25 05:11:30

○A54.85.189.12015-11-14 → 2015-11-14 · 4 obs

○ 2015-07-15 16:14:30
● 2015-11-14 02:34:20
○ 2016-02-26 11:23:26
○ 2026-04-25 05:11:30

○CNAMEhdredirect-lb-399551664.us-east-1.elb.amazonaws.com2015-07-15 → 2016-06-27 · 4 obs

● 2015-07-15 16:14:30
● 2016-06-27 05:46:34
○ 2017-02-09 10:05:04
○ 2026-04-25 05:11:30

○CNAMEhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com2017-02-09 → 2017-02-09 · 4 obs

○ 2016-06-27 05:46:34
● 2017-02-09 10:05:04
○ 2020-04-07 07:54:50
○ 2026-04-25 05:11:30

○CNAMEhdredirect-lb5-1afb6e2973825a56.elb.us-east-1.amazonaws.com2020-04-07 → 2020-04-07 · 4 obs

○ 2017-02-09 10:05:04
● 2020-04-07 07:54:50
○ 2026-04-05 19:29:34
○ 2026-04-25 05:11:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
cursosmaster.com	domain-for-sale.hugedomainsdns.com, forsale.hugedomainsdns.com	16 records

✅ Authoritative Response

Server:54.157.217.233

NS records: domain-for-sale.hugedomainsdns.com, forsale.hugedomainsdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cursosmaster.com (unsigned zone)

⏱️ Timing

Total: 163ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`54.243.117.197, 13.223.25.84`
AAAA	2	`2600:1f18:4ae:c606:78d4:4260:db4e:aeee, 2600:1f18:4ae:c605:dd5d:b838:5816:d7fb`
NS	2	`domain-for-sale.hugedomainsdns.com, forsale.hugedomainsdns.com`
TXT	2	`afternic-verification-G9G3tM8T8EwEizzPzj, v=spf1 -all`
SOA	1	`ns1.namebrightdns.com dns.namebright.com`

📌 Glue Records Collected

Total: 16

Out-of-bailiwick: 16 (domain-for-sale.hugedomainsdns.com, domain-for-sale.hugedomainsdns.com, domain-for-sale.hugedomainsdns.com...)

Analysis

IP Addresses

cursosmaster.com points to four IP numbers: 2600:1f18:4ae:c605:dd5d:b838:5816:d7fb, 2600:1f18:4ae:c606:78d4:4260:db4e:aeee, 13.223.25.84 and 54.243.117.197.

Other host names, for instance umdpsp.org.siteaero.com, corehackers.com, www.huntersspeak.com, greateratlantahomes.com and eonmatrix.com share IP numbers with cursosmaster.com.

Name Servers

cursosmaster.com is delegated to three name servers: domain-for-sale.hugedomainsdns.com, forsale.hugedomainsdns.com and ns1.namebrightdns.com.

cursosmaster.com at least partially shares its name servers with other domains, for instance deprim.com, vetstemcell.com, greenbeez.com, leccauto.com and nobleci.com.

These name servers are commonly used with nsg1.namebrightdns.com, nsg2.namebrightdns.com and ns2.namebrightdns.com.

Host names with eight IP numbers

domain-for-sale.hugedomainsdns.com points to: 2600:1f18:683a:ae1a:7d0c:28f5:ebc9:1ac8, 2600:1f18:683a:ae1a:94d8:6b55:f3b0:2b6e, 2600:1f18:683a:ae1b:dc6d:2ff5:8ede:179e, 2600:1f18:683a:ae1b:ee21:228d:fab6:9af5, 54.90.178.80, 54.157.217.233, 54.197.162.93 and 98.92.6.123

forsale.hugedomainsdns.com points to: 2600:1f18:683a:ae1a:1778:6ee0:530:c411, 2600:1f18:683a:ae1a:7db3:b04b:3783:ac2, 2600:1f18:683a:ae1b:7758:b87:5dc2:23a9, 2600:1f18:683a:ae1b:ef75:e8e2:9a50:1e79, 3.90.68.229, 35.171.187.120, 54.145.2.185 and 100.31.153.57

Host names with five IP numbers

ns1.namebrightdns.com points to: 2600:1f18:683a:ae1a:111c:4291:9c72:702d, 2600:1f18:683a:ae1a:8b2d:453e:ca75:106e, 2600:1f18:683a:ae1a:e0e8:f080:7325:d0f3, 3.89.244.178 and 54.234.54.230

cursosmaster.com - robtex.com