`mastercursos.net`

DNSSEC	⚠️ Not signed
A	78.46.108.164^{🇩🇪 Hetzner78.46.0.0/15 HETZNER-RZ-NBG-BLK5}
		PTR	`development.idea-factory.pt`
NS	`dns1.registrar-servers.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.registrar-servers.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`
TXT	`google-site-verification=c5qrXM9453rp1f23CJMQVXBwLF0Nb88PKsF8CStxvok`
SOA	`dns1.registrar-servers.com`hostmaster@registrar-servers.com serial=1761163540

`net`

	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=1777086776

Same first word

mastercursos.net

Similar names

smartsources.net

smartcourses.net

cursosmaster.com

smartcourses.com

DNS History

15 records (3 active, 12 former)

●NSdns1.registrar-servers.com2026-03-27 → 2026-04-25 · 3 obs

○ 2020-03-03 05:27:20
● 2026-03-27 10:29:12
● 2026-04-25 03:23:00

●NSdns2.registrar-servers.com2026-03-27 → 2026-04-25 · 3 obs

○ 2020-03-03 05:27:20
● 2026-03-27 10:29:12
● 2026-04-25 03:23:00

○NSns21.domaincontrol.com2015-05-28 → 2020-03-03 · 4 obs

● 2015-05-28 09:40:04
● 2020-03-03 05:27:20
○ 2026-03-27 10:29:12
○ 2026-04-25 03:23:00

○NSns22.domaincontrol.com2015-05-28 → 2020-03-03 · 4 obs

● 2015-05-28 09:40:04
● 2020-03-03 05:27:20
○ 2026-03-27 10:29:12
○ 2026-04-25 03:23:00

○MXalt1.aspmx.l.google.com2020-03-03 → 2020-03-03 · 4 obs

○ 2017-04-02 14:12:48
● 2020-03-03 05:27:20
○ 2026-03-27 10:29:12
○ 2026-04-25 03:23:00

○MXalt2.aspmx.l.google.com2020-03-03 → 2020-03-03 · 4 obs

○ 2017-04-02 14:12:48
● 2020-03-03 05:27:20
○ 2026-03-27 10:29:12
○ 2026-04-25 03:23:00

○MXaspmx.l.google.com2020-03-03 → 2020-03-03 · 4 obs

○ 2017-04-02 14:12:48
● 2020-03-03 05:27:20
○ 2026-03-27 10:29:12
○ 2026-04-25 03:23:00

○MXaspmx2.googlemail.com2020-03-03 → 2020-03-03 · 4 obs

○ 2017-04-02 14:12:48
● 2020-03-03 05:27:20
○ 2026-03-27 10:29:12
○ 2026-04-25 03:23:00

○MXaspmx3.googlemail.com2020-03-03 → 2020-03-03 · 4 obs

○ 2017-04-02 14:12:48
● 2020-03-03 05:27:20
○ 2026-03-27 10:29:12
○ 2026-04-25 03:23:00

○MXmailstore1.secureserver.net2015-05-28 → 2017-04-02 · 4 obs

● 2015-05-28 09:40:04
● 2017-04-02 14:12:48
○ 2020-03-03 05:27:20
○ 2026-04-25 03:23:00

○MXsmtp.secureserver.net2015-05-28 → 2017-04-02 · 4 obs

● 2015-05-28 09:40:04
● 2017-04-02 14:12:48
○ 2020-03-03 05:27:20
○ 2026-04-25 03:23:00

○A52.17.23.2522015-10-17 → 2017-04-02 · 5 obs

○ 2015-05-28 09:40:04
● 2015-10-17 06:28:54
● 2017-04-02 14:12:48
○ 2020-03-03 05:27:20
○ 2026-04-25 03:23:00

○A63.32.18.1352020-03-03 → 2020-03-03 · 4 obs

○ 2017-04-02 14:12:48
● 2020-03-03 05:27:20
○ 2026-03-27 10:29:12
○ 2026-04-25 03:23:00

●A78.46.108.1642026-03-27 → 2026-04-25 · 3 obs

○ 2020-03-03 05:27:20
● 2026-03-27 10:29:12
● 2026-04-25 03:23:00

○A80.241.208.2102015-05-28 → 2015-05-28 · 3 obs

● 2015-05-28 09:40:04
○ 2015-10-17 06:28:54
○ 2026-04-25 03:23:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	m.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net...	-
mastercursos.net	dns1.registrar-servers.com, dns2.registrar-servers.com	-

✅ Authoritative Response

Server:156.154.133.200

NS records: dns1.registrar-servers.com, dns2.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mastercursos.net (unsigned zone)

⏱️ Timing

Total: 377ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`78.46.108.164`
NS	2	`dns1.registrar-servers.com, dns2.registrar-servers.com`
TXT	1	`google-site-verification=c5qrXM9453rp1f2`
SOA	1	`dns1.registrar-servers.com hostmaster.re`

Analysis

IP Addresses

mastercursos.net maps to IP address 78.46.108.164.

Other host names, for example development.idea-factory.pt, idea-factory.pt and www.idea-factory.pt share the same IP as mastercursos.net.

Name Servers

Two name servers dns1.registrar-servers.com and dns2.registrar-servers.com are delegated to mastercursos.net.

mastercursos.net uses the same name server configuration as other domains, such as origo.info, overseasdigest.com, optiquity.co, cqfsbw.com and settlesrealestatellc.com.

mastercursos.net at least partially shares name servers with other domains such as playlearnteach.com, patil.org, blockeddrainsnorthwest.com, staxup.com and makeuponyourmind.com.

These name servers are commonly used alongside dns3.registrar-servers.com, dns4.registrar-servers.com and dns5.registrar-servers.com.

Host names with two IPs:

dns1.registrar-servers.com points to 2610:a1:1024::200 and 156.154.132.200.

dns2.registrar-servers.com points to 2610:a1:1025::200 and 156.154.133.200.

mastercursos.net - robtex.com