`premiumcourses.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:8f37^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:2730^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.39.48^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.143.55^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`greg.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b73^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`greg.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c173^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`greg.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2173^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`greg.ns.cloudflare.com`
		A	108.162.193.115^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`greg.ns.cloudflare.com`
		A	172.64.33.115^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`greg.ns.cloudflare.com`
		A	173.245.59.115^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`greg.ns.cloudflare.com`
NS	`vera.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a93^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vera.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c093^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`vera.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2093^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`vera.ns.cloudflare.com`
		A	108.162.192.147^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vera.ns.cloudflare.com`
		A	172.64.32.147^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vera.ns.cloudflare.com`
		A	173.245.58.147^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vera.ns.cloudflare.com`
MX	`mx1.hostinger.com` ⭐
		A	2606:4700:90:0:c1f8:f874:2386:b61f^{🇺🇸 Cloudflare2606:4700:90::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.65.182.103^{🇺🇸 Cloudflare172.65.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`mx2.hostinger.com`⁽¹⁰⁾
		A	2606:4700:90:0:c1f8:f874:2386:b61f^{🇺🇸 Cloudflare2606:4700:90::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.65.182.103^{🇺🇸 Cloudflare172.65.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
TXT	`v=spf1 include:_spf.mail.hostinger.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.39.48, 172.67.143.55
		IPv6 hints	2606:4700:3030::ac43:8f37, 2606:4700:3033::6815:2730
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=166, name=cloudflare-ech.com
SOA	`greg.ns.cloudflare.com`dns@cloudflare.com serial=2404155103

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1778793506

Previously MX for

premiumcourses.org

Same first word

premiumcourses.org

premiumcourses.io

Similar names

premiumsources.com

DNS History

12 records (8 active, 4 former)

●NSgreg.ns.cloudflare.com2026-03-27 → 2026-05-14 · 3 obs

○ 2020-02-25 16:07:30
● 2026-03-27 22:07:40
● 2026-05-14 21:41:14

○NSns21.knownsrv.com2020-02-25 → 2020-02-25 · 3 obs

● 2020-02-25 16:07:30
○ 2026-03-27 22:07:40
○ 2026-05-14 21:41:14

○NSns22.knownsrv.com2020-02-25 → 2020-02-25 · 3 obs

● 2020-02-25 16:07:30
○ 2026-03-27 22:07:40
○ 2026-05-14 21:41:14

●NSvera.ns.cloudflare.com2026-03-27 → 2026-05-14 · 3 obs

○ 2020-02-25 16:07:30
● 2026-03-27 22:07:40
● 2026-05-14 21:41:14

●MXmx1.hostinger.com2026-03-27 → 2026-05-14 · 3 obs

○ 2020-02-25 16:07:30
● 2026-03-27 22:07:40
● 2026-05-14 21:41:14

●MXmx2.hostinger.com2026-03-27 → 2026-05-14 · 3 obs

○ 2020-02-25 16:07:30
● 2026-03-27 22:07:40
● 2026-05-14 21:41:14

○MXpremiumcourses.org2020-02-25 → 2020-02-25 · 3 obs

● 2020-02-25 16:07:30
○ 2026-03-27 22:07:40
○ 2026-05-14 21:41:14

●A104.21.39.482026-03-27 → 2026-05-14 · 3 obs

○ 2020-02-25 16:07:30
● 2026-03-27 22:07:40
● 2026-05-14 21:41:14

●A172.67.143.552026-03-27 → 2026-05-14 · 3 obs

○ 2020-02-25 16:07:30
● 2026-03-27 22:07:40
● 2026-05-14 21:41:14

●A2606:4700:3030::ac43:8f372026-03-27 → 2026-05-14 · 3 obs

○ 2020-02-25 16:07:30
● 2026-03-27 22:07:40
● 2026-05-14 21:41:14

●A2606:4700:3033::6815:27302026-03-27 → 2026-05-14 · 3 obs

○ 2020-02-25 16:07:30
● 2026-03-27 22:07:40
● 2026-05-14 21:41:14

○A77.81.121.192020-02-25 → 2020-02-25 · 3 obs

● 2020-02-25 16:07:30
○ 2026-03-27 22:07:40
○ 2026-05-14 21:41:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
premiumcourses.org	greg.ns.cloudflare.com, vera.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.147

NS records: greg.ns.cloudflare.com, vera.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for premiumcourses.org (unsigned zone)

⏱️ Timing

Total: 504ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.143.55, 104.21.39.48`
AAAA	2	`2606:4700:3030::ac43:8f37, 2606:4700:3033::6815:2730`
NS	2	`greg.ns.cloudflare.com, vera.ns.cloudflare.com`
MX	2	`mx2.hostinger.com (pri: 10), mx1.hostinger.com (pri: 5)`
TXT	1	`v=spf1 include:_spf.mail.hostinger.com ~`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`greg.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

premiumcourses.org points to four IP numbers: 2606:4700:3030::ac43:8f37, 2606:4700:3033::6815:2730, 104.21.39.48 and 172.67.143.55.

Other host names, for instance sigmacenterx.pics, www.allsafe.com.tr, www.putlockerplus.org, taxneeds.com and www.go4fit.com share IP numbers with premiumcourses.org.

Name Servers

Delegation for premiumcourses.org rests with two name servers, greg.ns.cloudflare.com and vera.ns.cloudflare.com.

premiumcourses.org shares the same name server setup as other domains, including terracx.com, annuairequivalide.com, cidadeverde.com, nagaslot168menang.rest and rapidwa.com.

premiumcourses.org at least partially shares name servers with other domains, for instance owdn.com, vponederland.nl, russgeorge.net, (0x736578)shopkazanova.ru and blayva.com.

These name servers are commonly used with the name servers adaline.ns.cloudflare.com.

Host names with six IP numbers: greg.ns.cloudflare.com points to: 2606:4700:58::adf5:3b73, 2803:f800:50::6ca2:c173, 2a06:98c1:50::ac40:2173, 108.162.193.115, 172.64.33.115 and 173.245.59.115. vera.ns.cloudflare.com points to: 2606:4700:50::adf5:3a93, 2803:f800:50::6ca2:c093, 2a06:98c1:50::ac40:2093, 108.162.192.147, 172.64.32.147 and 173.245.58.147.

Mail Servers

premiumcourses.org is handled by two mail servers: mx1.hostinger.com and mx2.hostinger.com.

premiumcourses.org uses the same mail server configuration as other domains, such as emrb.com.br, pantiles.com, rentmyhouse.net, learnpysanky.com and uniadmits.com.

premiumcourses.org shares at least partially some mail servers with other domains, for example gravityx.in, smartcampusconnect.com and britbuilddevelopments.com.

Host names with two IP numbers:

mx1.hostinger.com points to 2606:4700:90:0:c1f8:f874:2386:b61f and 172.65.182.103.

mx2.hostinger.com points to 2606:4700:90:0:c1f8:f874:2386:b61f and 172.65.182.103.

Host names pointing to 2606:4700:90:0:c1f8:f874:2386:b61f: mx1.hostinger.com, mx2.hostinger.com.

Host names pointing to 172.65.182.103: mx1.hostinger.com, mx2.hostinger.com.

premiumcourses.org - robtex.com