`academiccourses.pl`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:dbc5^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:18ad^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.24.173^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.219.197^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dana.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a69^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dana.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c069^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dana.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2069^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dana.ns.cloudflare.com`
		A	108.162.192.105^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dana.ns.cloudflare.com`
		A	172.64.32.105^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dana.ns.cloudflare.com`
		A	173.245.58.105^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dana.ns.cloudflare.com`
NS	`jay.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b7b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jay.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c17b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jay.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:217b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jay.ns.cloudflare.com`
		A	108.162.193.123^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jay.ns.cloudflare.com`
		A	172.64.33.123^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jay.ns.cloudflare.com`
		A	173.245.59.123^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jay.ns.cloudflare.com`
MX	`mfwd.ebrandservices.com` ⭐
		A	80.92.65.53^{🇱🇺 DCLUX-AS80.92.65.0/24}
			PTR	`mfwd.ebrandservices.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.24.173, 172.67.219.197
		IPv6 hints	2606:4700:3031::ac43:dbc5, 2606:4700:3033::6815:18ad
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=177, name=cloudflare-ech.com
SOA	`dana.ns.cloudflare.com`dns@cloudflare.com serial=2403983860

`pl`

	DNSSEC	⚠️ Not signed
	NS	`a-dns.pl` ⭐
	NS	`b-dns.pl`
	NS	`d-dns.pl`
	NS	`f-dns.pl`
	NS	`h-dns.pl`
	NS	`j-dns.pl`
	TXT	`ccTLD of Poland`
	SOA	`a-dns.pl`dnsmaster@nask.pl serial=1778481118

Same first word

Similar names

academicsources.com

DNS History

7 records (7 active, 0 former)

●NSdana.ns.cloudflare.com2026-03-25 → 2026-05-11 · 2 obs

● 2026-03-25 18:47:44
● 2026-05-11 16:43:12

●NSjay.ns.cloudflare.com2026-03-25 → 2026-05-11 · 2 obs

● 2026-03-25 18:47:44
● 2026-05-11 16:43:12

●MXmfwd.ebrandservices.com2026-03-25 → 2026-05-11 · 2 obs

● 2026-03-25 18:47:44
● 2026-05-11 16:43:12

●A104.21.24.1732026-03-25 → 2026-05-11 · 2 obs

● 2026-03-25 18:47:44
● 2026-05-11 16:43:12

●A172.67.219.1972026-03-25 → 2026-05-11 · 2 obs

● 2026-03-25 18:47:44
● 2026-05-11 16:43:12

●A2606:4700:3031::ac43:dbc52026-03-25 → 2026-05-11 · 2 obs

● 2026-03-25 18:47:44
● 2026-05-11 16:43:12

●A2606:4700:3033::6815:18ad2026-03-25 → 2026-05-11 · 2 obs

● 2026-03-25 18:47:44
● 2026-05-11 16:43:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pl	a-dns.pl, b-dns.pl, d-dns.pl, f-dns.pl...	-
academiccourses.pl	dana.ns.cloudflare.com, jay.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.105

NS records: dana.ns.cloudflare.com, jay.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for academiccourses.pl (unsigned zone)

⏱️ Timing

Total: 2116ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.24.173, 172.67.219.197`
AAAA	2	`2606:4700:3033::6815:18ad, 2606:4700:3031::ac43:dbc5`
NS	2	`dana.ns.cloudflare.com, jay.ns.cloudflare.com`
MX	1	`mfwd.ebrandservices.com (pri: 10)`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dana.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

academiccourses.pl resolves to four IP numbers: 2606:4700:3031::ac43:dbc5, 2606:4700:3033::6815:18ad, 104.21.24.173 and 172.67.219.197.

other host names for instance mail.ct118.net, aixapps.com, truyen4u.com, seeei.org.il and andipoeme.com share IP numbers with academiccourses.pl.

Name Servers

academiccourses.pl is delegated to two name servers: dana.ns.cloudflare.com and jay.ns.cloudflare.com.

academiccourses.pl shares the same name server setup as other domains, for example masterstudies.gr, academiccourses.fr, dirassatalqanon.com, 9979.com and marksdmw.com.

academiccourses.pl at least partially shares name servers with other domains, for instance binmitdabei.com, startlinetiming.com, vitalsleep.com, up256.com and gayfishdating.com.

These name servers are commonly used with jose.ns.cloudflare.com, dave.ns.cloudflare.com and lily.ns.cloudflare.com.

Host names with six IP numbers:

dana.ns.cloudflare.com points to: 2606:4700:50::adf5:3a69, 2803:f800:50::6ca2:c069, 2a06:98c1:50::ac40:2069, 108.162.192.105, 172.64.32.105 and 173.245.58.105; jay.ns.cloudflare.com points to: 2606:4700:58::adf5:3b7b, 2803:f800:50::6ca2:c17b, 2a06:98c1:50::ac40:217b, 108.162.193.123, 172.64.33.123 and 173.245.59.123.

Mail Servers

academiccourses.pl is handled by a single mail server, mfwd.ebrandservices.com.

academiccourses.pl shares the same mail server setup as other domains, for instance spocha.de, glasdonlitterbins.com, aerosoft.ru, simulatorworld.fr and thelocal.dating.

Host name mfwd.ebrandservices.com points to IP address 80.92.65.53.

academiccourses.pl - robtex.com