`sposlearning.cz`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:1e9c^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:ad35^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.30.156^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.173.53^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cleo.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b59^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cleo.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c159^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cleo.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2159^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cleo.ns.cloudflare.com`
		A	108.162.193.89^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cleo.ns.cloudflare.com`
		A	172.64.33.89^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cleo.ns.cloudflare.com`
		A	173.245.59.89^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cleo.ns.cloudflare.com`
NS	`laura.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ab7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`laura.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0b7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`laura.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20b7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`laura.ns.cloudflare.com`
		A	108.162.192.183^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`laura.ns.cloudflare.com`
		A	172.64.32.183^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`laura.ns.cloudflare.com`
		A	173.245.58.183^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`laura.ns.cloudflare.com`
MX	`mxavas.forpsi.com` ⭐
		A	81.2.195.200^{🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s.}
			PTR	`mxavas.forpsi.com`
TXT	`actalis-dcv=b4r5l7f4071r7ssdjbct088a10`
TXT	`firebase=sposlearning-group20`
TXT	`v=spf1 a mx include:_spf.forpsi.com -all`
TXT	`v=spf1 include:_spf.firebasemail.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.30.156, 172.67.173.53
		IPv6 hints	2606:4700:3032::6815:1e9c, 2606:4700:3036::ac43:ad35
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=155, name=cloudflare-ech.com
SOA	`cleo.ns.cloudflare.com`dns@cloudflare.com serial=2402725397

`cz`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.ns.nic.cz` ⭐
	NS	`b.ns.nic.cz`
	NS	`c.ns.nic.cz`
	NS	`d.ns.nic.cz`
	SOA	`a.ns.nic.cz`hostmaster@nic.cz serial=1777274236

Same first word

sposlearning.cz

Similar names

regionsplans.com

polarsensing.com

DNS History

11 records (7 active, 4 former)

●NScleo.ns.cloudflare.com2026-03-24 → 2026-04-27 · 2 obs

● 2026-03-24 11:03:28
● 2026-04-27 07:40:44

●NSlaura.ns.cloudflare.com2026-03-24 → 2026-04-27 · 2 obs

● 2026-03-24 11:03:28
● 2026-04-27 07:40:44

●MXmxavas.forpsi.com2026-03-24 → 2026-04-27 · 2 obs

● 2026-03-24 11:03:28
● 2026-04-27 07:40:44

●A104.21.30.1562026-04-27 → 2026-04-27 · 3 obs

○ 2026-03-24 11:03:28
● 2026-04-27 07:40:42
● 2026-04-27 07:40:44

●A172.67.173.532026-04-27 → 2026-04-27 · 3 obs

○ 2026-03-24 11:03:28
● 2026-04-27 07:40:42
● 2026-04-27 07:40:44

○A188.114.96.02026-03-24 → 2026-03-24 · 3 obs

● 2026-03-24 11:03:28
○ 2026-04-27 07:40:42
○ 2026-04-27 07:40:44

○A188.114.97.02026-03-24 → 2026-03-24 · 3 obs

● 2026-03-24 11:03:28
○ 2026-04-27 07:40:42
○ 2026-04-27 07:40:44

●A2606:4700:3032::6815:1e9c2026-04-27 → 2026-04-27 · 3 obs

○ 2026-03-24 11:03:28
● 2026-04-27 07:40:42
● 2026-04-27 07:40:44

●A2606:4700:3036::ac43:ad352026-04-27 → 2026-04-27 · 3 obs

○ 2026-03-24 11:03:28
● 2026-04-27 07:40:42
● 2026-04-27 07:40:44

○A2a06:98c1:3120::2026-03-24 → 2026-03-24 · 3 obs

● 2026-03-24 11:03:28
○ 2026-04-27 07:40:42
○ 2026-04-27 07:40:44

○A2a06:98c1:3121::2026-03-24 → 2026-03-24 · 3 obs

● 2026-03-24 11:03:28
○ 2026-04-27 07:40:42
○ 2026-04-27 07:40:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	d.ns.nic.cz, b.ns.nic.cz, a.ns.nic.cz, c.ns.nic.cz	-
sposlearning.cz	cleo.ns.cloudflare.com, laura.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.183

NS records: cleo.ns.cloudflare.com, laura.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sposlearning.cz (unsigned zone)

⏱️ Timing

Total: 1052ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.173.53, 104.21.30.156`
AAAA	2	`2606:4700:3036::ac43:ad35, 2606:4700:3032::6815:1e9c`
NS	2	`cleo.ns.cloudflare.com, laura.ns.cloudflare.com`
MX	1	`mxavas.forpsi.com (pri: 10)`
TXT	4	`actalis-dcv=b4r5l7f4071r7ssdjbct088a10, firebase=sposlearning-group20...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cleo.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

sposlearning.cz maps to four IP numbers: 2606:4700:3032::6815:1e9c, 2606:4700:3036::ac43:ad35, 104.21.30.156 and 172.67.173.53.

Other host names, for instance musicbackingtracks.co.uk, konyalalezarhaliyikama.com, baopinzhe.com, pathgrowy.click and lushop.de share IP numbers with sposlearning.cz.

Name Servers

Two name servers cleo.ns.cloudflare.com and laura.ns.cloudflare.com are delegated to sposlearning.cz.

sposlearning.cz uses the same name server configuration as other domains, such as jeffcoughlin.com, doolacreativeshop.com, asterpharmacyonline.com, medcare.ae and exhibitexpertsaz.com.

sposlearning.cz at least partially shares name servers with other domains such as thecarshop.com, duoxl.com, telefoniamix.com, naiopsd.org and carshop.co.

These name servers are commonly used with augustus.ns.cloudflare.com, carter.ns.cloudflare.com, mike.ns.cloudflare.com and jaime.ns.cloudflare.com.

Host names with six IP numbers: Host name cleo.ns.cloudflare.com points to 2606:4700:58::adf5:3b59, 2803:f800:50::6ca2:c159, 2a06:98c1:50::ac40:2159, 108.162.193.89, 172.64.33.89 and 173.245.59.89; host name laura.ns.cloudflare.com points to 2606:4700:50::adf5:3ab7, 2803:f800:50::6ca2:c0b7, 2a06:98c1:50::ac40:20b7, 108.162.192.183, 172.64.32.183 and 173.245.58.183.

Mail Servers

sposlearning.cz is handled by a single mail server, mxavas.forpsi.com.

sposlearning.cz shares the same mail server setup as other domains, including stet.cz, aroland.hu, skw.cz, bylok.cz and emfinance.cz.

sposlearning.cz shares some mail servers with other domains, at least partially, for instance macon.cz.

mxavas.forpsi.com points to one IP number: 81.2.195.200.

sposlearning.cz - robtex.com

sposlearning.cz

cz

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`sposlearning.cz`

`cz`