`mujblesk.cz`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:13d1^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:be33^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.19.209^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.190.51^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`kehlani.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26df^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kehlani.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2df^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kehlani.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22df^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kehlani.ns.cloudflare.com`
		A	108.162.194.223^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kehlani.ns.cloudflare.com`
		A	162.159.38.223^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kehlani.ns.cloudflare.com`
		A	172.64.34.223^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kehlani.ns.cloudflare.com`
NS	`malcolm.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c51^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`malcolm.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c351^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`malcolm.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2351^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`malcolm.ns.cloudflare.com`
		A	108.162.195.81^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`malcolm.ns.cloudflare.com`
		A	162.159.44.81^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`malcolm.ns.cloudflare.com`
		A	172.64.35.81^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`malcolm.ns.cloudflare.com`
MX	`email.webglobe.cz` ⭐
		A	2001:1ab0:7e1f:1::1:5^{🇨🇿 IGNUM-AS2001:1ab0::/32 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/}
			PTR	`email.webglobe.cz`
		A	130.193.14.154^{🇨🇿 IGNUM-AS130.193.8.0/21 Webglobe s.r.o. H90}
			PTR	`email.webglobe.cz`
MX	`email2.webglobe.cz` ⭐
		A	130.193.14.154^{🇨🇿 IGNUM-AS130.193.8.0/21 Webglobe s.r.o. H90}
			PTR	`email.webglobe.cz`
MX	`email3.webglobe.cz` ⭐
		A	2001:880:0:15::2b1^{🇩🇪 ONE-NETWORK2001:880::/32}
			PTR	`email3.webglobe.cz`
		A	185.102.21.80^{🇨🇿 ONE-NETWORK185.102.21.0/24}
			PTR	`email3.webglobe.cz`
MX	`email4.webglobe.cz` ⭐
		A	185.102.21.80^{🇨🇿 ONE-NETWORK185.102.21.0/24}
			PTR	`email3.webglobe.cz`
TXT	`v=spf1 a mx include:_spf.webglobe.cz -all`
TXT	`v=spf2.0/mfrom,pra +a +mx include:_spf2.webglobe.cz -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.19.209, 172.67.190.51
		IPv6 hints	2606:4700:3031::6815:13d1, 2606:4700:3033::ac43:be33
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=214, name=cloudflare-ech.com
SOA	`kehlani.ns.cloudflare.com`dns@cloudflare.com serial=2410366619

`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=1785631641

Same first word

mujblesk.cz

DNS History

14 records (10 active, 4 former)

●NSkehlani.ns.cloudflare.com2026-07-08 → 2026-08-02 · 3 obs

○ 2026-03-06 02:20:14
● 2026-07-08 14:12:08
● 2026-08-02 01:27:22

●NSmalcolm.ns.cloudflare.com2026-07-08 → 2026-08-02 · 3 obs

○ 2026-03-06 02:20:14
● 2026-07-08 14:12:08
● 2026-08-02 01:27:22

○NSns1.webglobe.cz2026-03-06 → 2026-03-06 · 3 obs

● 2026-03-06 02:20:14
○ 2026-07-08 14:12:08
○ 2026-08-02 01:27:22

○NSns2.webglobe.cz2026-03-06 → 2026-03-06 · 3 obs

● 2026-03-06 02:20:14
○ 2026-07-08 14:12:08
○ 2026-08-02 01:27:22

○NSns3.webglobe.com2026-03-06 → 2026-03-06 · 3 obs

● 2026-03-06 02:20:14
○ 2026-07-08 14:12:08
○ 2026-08-02 01:27:22

●MXemail.webglobe.cz2026-03-06 → 2026-08-02 · 2 obs

● 2026-03-06 02:20:14
● 2026-08-02 01:27:22

●MXemail2.webglobe.cz2026-03-06 → 2026-08-02 · 2 obs

● 2026-03-06 02:20:14
● 2026-08-02 01:27:22

●MXemail3.webglobe.cz2026-03-06 → 2026-08-02 · 2 obs

● 2026-03-06 02:20:14
● 2026-08-02 01:27:22

●MXemail4.webglobe.cz2026-03-06 → 2026-08-02 · 2 obs

● 2026-03-06 02:20:14
● 2026-08-02 01:27:22

●A104.21.19.2092026-07-08 → 2026-08-02 · 3 obs

○ 2026-03-06 02:20:14
● 2026-07-08 14:12:08
● 2026-08-02 01:27:22

●A172.67.190.512026-07-08 → 2026-08-02 · 3 obs

○ 2026-03-06 02:20:14
● 2026-07-08 14:12:08
● 2026-08-02 01:27:22

●A2606:4700:3031::6815:13d12026-07-08 → 2026-08-02 · 3 obs

○ 2026-03-06 02:20:14
● 2026-07-08 14:12:08
● 2026-08-02 01:27:22

●A2606:4700:3033::ac43:be332026-07-08 → 2026-08-02 · 3 obs

○ 2026-03-06 02:20:14
● 2026-07-08 14:12:08
● 2026-08-02 01:27:22

○A62.109.151.802026-03-06 → 2026-03-06 · 3 obs

● 2026-03-06 02:20:14
○ 2026-07-08 14:12:08
○ 2026-08-02 01:27:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
mujblesk.cz	kehlani.ns.cloudflare.com, malcolm.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.34.223

NS records: kehlani.ns.cloudflare.com, malcolm.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mujblesk.cz (unsigned zone)

⏱️ Timing

Total: 2365ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.19.209, 172.67.190.51`
AAAA	2	`2606:4700:3033::ac43:be33, 2606:4700:3031::6815:13d1`
NS	2	`kehlani.ns.cloudflare.com, malcolm.ns.cloudflare.com`
MX	4	`email.webglobe.cz (pri: 10), email2.webglobe.cz (pri: 10)...`
TXT	2	`v=spf1 a mx include:_spf.webglobe.cz -al, v=spf2.0/mfrom,pra +a +mx include:_spf2.`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`kehlani.ns.cloudflare.com dns.cloudflare`

Analysis

IP Addresses

mujblesk.cz points to the four IP addresses 104.21.19.209, 172.67.190.51, 2606:4700:3031::6815:13d1 and 2606:4700:3033::ac43:be33.

xerq.io, jd6.com.br, wxhlysb.com and two other host names share IP numbers with mujblesk.cz.

Name Servers

Two name servers handle the delegation for mujblesk.cz: kehlani.ns.cloudflare.com and malcolm.ns.cloudflare.com.

mujblesk.cz uses the same name servers as several other domains — among them jeruknih.pages.dev, 4rne5.dev, thebrownbird.com and two more.

There is at least partial name server overlap between mujblesk.cz and other domains — nigos.com.tr, gwtnp.com, (0x706f726e)burger.me and two more among them.

The name servers fish.ns.cloudflare.com, otto.ns.cloudflare.com and sarah.ns.cloudflare.com are often found in combination with these name servers.

Hostnames that resolve to 6 IP addresses:

kehlani.ns.cloudflare.com resolves to 108.162.194.223, 162.159.38.223 and 172.64.34.223 among others, with 3 other IP addresses in total.

malcolm.ns.cloudflare.com resolves to 108.162.195.81, 162.159.44.81 and 172.64.35.81 among others, with 3 other IP addresses in total.

Mail Servers

The four mail servers for mujblesk.cz are email2.webglobe.cz, email3.webglobe.cz, email4.webglobe.cz and email.webglobe.cz.

mujblesk.cz has at least partial mail server overlap with other domains such as hotelbonsai.cz, specvdf.cz, aqua-thermo.cz and two more.

Hostnames that resolve to two IP addresses:

email3.webglobe.cz resolves to two addresses: 185.102.21.80 and 2001:880:0:15::2b1.

email.webglobe.cz resolves to two addresses: 130.193.14.154 and 2001:1ab0:7e1f:1::1:5.

Hosts with just one IP address:

The hostname email2.webglobe.cz resolves to 130.193.14.154.

The hostname email4.webglobe.cz resolves to 185.102.21.80.

email3.webglobe.cz along with email4.webglobe.cz each resolve to 185.102.21.80 IP addresses.

email.webglobe.cz along with email2.webglobe.cz each resolve to 130.193.14.154 IP addresses.

mujblesk.cz - robtex.com

mujblesk.cz

cz

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`mujblesk.cz`

`cz`