`crossczech.cz`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:3236^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:c98c^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.50.54^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.201.140^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ken.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b7f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ken.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c17f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ken.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:217f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ken.ns.cloudflare.com`
		A	108.162.193.127^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ken.ns.cloudflare.com`
		A	172.64.33.127^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ken.ns.cloudflare.com`
		A	173.245.59.127^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ken.ns.cloudflare.com`
NS	`zoe.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a95^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zoe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c095^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`zoe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2095^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`zoe.ns.cloudflare.com`
		A	108.162.192.149^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zoe.ns.cloudflare.com`
		A	172.64.32.149^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zoe.ns.cloudflare.com`
		A	173.245.58.149^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zoe.ns.cloudflare.com`
TXT	`google-site-verification=rZKRYlwSfqikjG26OPFIuWIyRns-V08lk3pL2rf_uvk`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.50.54, 172.67.201.140
		IPv6 hints	2606:4700:3033::6815:3236, 2606:4700:3037::ac43:c98c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=110, name=cloudflare-ech.com
SOA	`ken.ns.cloudflare.com`dns@cloudflare.com serial=2410202503

`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=1786180641

rank #308721 globally
rank #1364 in the tld

Same first word

crossczech.cz

DNS History

27 records (6 active, 21 former)

○NSalfa.ns.active24.cz2015-07-15 → 2016-05-10 · 4 obs

● 2015-07-15 11:43:40
● 2016-05-10 08:08:56
○ 2017-02-06 00:28:32
○ 2026-08-08 09:46:50

○NSbeta.ns.active24.cz2015-07-15 → 2016-05-10 · 4 obs

● 2015-07-15 11:43:40
● 2016-05-10 08:08:56
○ 2017-02-06 00:28:32
○ 2026-08-08 09:46:50

○NSgama.ns.active24.sk2015-07-15 → 2016-05-10 · 4 obs

● 2015-07-15 11:43:40
● 2016-05-10 08:08:56
○ 2017-02-06 00:28:32
○ 2026-08-08 09:46:50

●NSken.ns.cloudflare.com2026-06-08 → 2026-08-08 · 3 obs

○ 2017-02-06 00:28:32
● 2026-06-08 07:03:58
● 2026-08-08 09:46:50

○NSns.dns4.cz2015-07-15 → 2016-05-10 · 4 obs

● 2015-07-15 11:43:40
● 2016-05-10 08:08:56
○ 2017-02-06 00:28:32
○ 2026-08-08 09:46:50

○NSns1.sonexo.eu2017-02-06 → 2017-02-06 · 4 obs

○ 2016-05-10 08:08:56
● 2017-02-06 00:28:32
○ 2026-06-08 07:03:58
○ 2026-08-08 09:46:50

○NSns2.sonexo.com2017-02-06 → 2017-02-06 · 4 obs

○ 2016-05-10 08:08:56
● 2017-02-06 00:28:32
○ 2026-06-08 07:03:58
○ 2026-08-08 09:46:50

●NSzoe.ns.cloudflare.com2026-06-08 → 2026-08-08 · 3 obs

○ 2017-02-06 00:28:32
● 2026-06-08 07:03:58
● 2026-08-08 09:46:50

○MXalt1.aspmx.l.google.com2015-07-15 → 2016-05-10 · 4 obs

● 2015-07-15 11:43:40
● 2016-05-10 08:08:56
○ 2017-02-06 00:28:32
○ 2026-08-08 09:46:50

○MXalt2.aspmx.l.google.com2015-07-15 → 2016-05-10 · 4 obs

● 2015-07-15 11:43:40
● 2016-05-10 08:08:56
○ 2017-02-06 00:28:32
○ 2026-08-08 09:46:50

○MXaspmx.l.google.com2015-07-15 → 2016-05-10 · 4 obs

● 2015-07-15 11:43:40
● 2016-05-10 08:08:56
○ 2017-02-06 00:28:32
○ 2026-08-08 09:46:50

○MXaspmx2.googlemail.com2015-07-15 → 2016-05-10 · 4 obs

● 2015-07-15 11:43:40
● 2016-05-10 08:08:56
○ 2017-02-06 00:28:32
○ 2026-08-08 09:46:50

○MXaspmx3.googlemail.com2015-07-15 → 2016-05-10 · 4 obs

● 2015-07-15 11:43:40
● 2016-05-10 08:08:56
○ 2017-02-06 00:28:32
○ 2026-08-08 09:46:50

○MXmail.crossczech.cz2015-07-15 → 2016-05-10 · 4 obs

● 2015-07-15 11:43:40
● 2016-05-10 08:08:56
○ 2017-02-06 00:28:32
○ 2026-08-08 09:46:50

●A104.21.50.542026-06-08 → 2026-08-08 · 5 obs

○ 2017-02-06 00:28:32
● 2026-06-08 07:03:58
○ 2026-07-18 19:21:52
● 2026-08-05 16:34:14
● 2026-08-08 09:46:50

○A141.8.224.1232017-02-06 → 2017-02-06 · 4 obs

○ 2016-05-10 08:08:56
● 2017-02-06 00:28:32
○ 2026-06-08 07:03:58
○ 2026-08-08 09:46:50

○A146.255.24.2432015-07-15 → 2016-05-10 · 4 obs

● 2015-07-15 11:43:40
● 2016-05-10 08:08:56
○ 2017-02-06 00:28:32
○ 2026-08-08 09:46:50

●A172.67.201.1402026-06-08 → 2026-08-08 · 5 obs

○ 2017-02-06 00:28:32
● 2026-06-08 07:03:58
○ 2026-07-18 19:21:52
● 2026-08-05 16:34:14
● 2026-08-08 09:46:50

○A188.114.96.02026-07-18 → 2026-07-18 · 4 obs

○ 2026-06-08 07:03:58
● 2026-07-18 19:21:52
○ 2026-08-05 16:34:14
○ 2026-08-08 09:46:50

○A188.114.97.02026-07-18 → 2026-07-18 · 4 obs

○ 2026-06-08 07:03:58
● 2026-07-18 19:21:52
○ 2026-08-05 16:34:14
○ 2026-08-08 09:46:50

●A2606:4700:3033::6815:32362026-08-05 → 2026-08-08 · 3 obs

○ 2026-07-18 19:21:52
● 2026-08-05 16:34:14
● 2026-08-08 09:46:50

○A2606:4700:3034::ac43:c98c2026-06-08 → 2026-06-08 · 4 obs

○ 2017-02-06 00:28:32
● 2026-06-08 07:03:58
○ 2026-07-18 19:21:52
○ 2026-08-08 09:46:50

○A2606:4700:3035::6815:32362026-06-08 → 2026-06-08 · 4 obs

○ 2017-02-06 00:28:32
● 2026-06-08 07:03:58
○ 2026-07-18 19:21:52
○ 2026-08-08 09:46:50

●A2606:4700:3037::ac43:c98c2026-08-05 → 2026-08-08 · 3 obs

○ 2026-07-18 19:21:52
● 2026-08-05 16:34:14
● 2026-08-08 09:46:50

○A2a02:4a8:ac24:102::96:942015-07-15 → 2016-05-10 · 4 obs

● 2015-07-15 11:43:40
● 2016-05-10 08:08:56
○ 2017-02-06 00:28:32
○ 2026-08-08 09:46:50

○A2a06:98c1:3120::2026-07-18 → 2026-07-18 · 4 obs

○ 2026-06-08 07:03:58
● 2026-07-18 19:21:52
○ 2026-08-05 16:34:14
○ 2026-08-08 09:46:50

○A2a06:98c1:3121::2026-07-18 → 2026-07-18 · 4 obs

○ 2026-06-08 07:03:58
● 2026-07-18 19:21:52
○ 2026-08-05 16:34:14
○ 2026-08-08 09:46:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, d.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz	-
crossczech.cz	zoe.ns.cloudflare.com, ken.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.127

NS records: zoe.ns.cloudflare.com, ken.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for crossczech.cz (unsigned zone)

⏱️ Timing

Total: 681ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.201.140, 104.21.50.54`
AAAA	2	`2606:4700:3037::ac43:c98c, 2606:4700:3033::6815:3236`
NS	2	`ken.ns.cloudflare.com, zoe.ns.cloudflare.com`
TXT	1	`google-site-verification=rZKRYlwSfqikjG2`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`ken.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

crossczech.cz directs to four IP numbers, which are 104.21.50.54, 172.67.201.140, 2606:4700:3033::6815:3236 and 2606:4700:3037::ac43:c98c.

ngelmat.net, australiandoctors.net, cungvuichoi.com and two other host names share IP numbers with crossczech.cz.

Name Servers

crossczech.cz is served by two delegated name servers, ken.ns.cloudflare.com and zoe.ns.cloudflare.com.

crossczech.cz uses the same name servers as several other domains — among them minervision.com, schoolplaten.com, sfgo.us and two more.

At least some of crossczech.cz's name servers are shared with other domains, for example xansite.com, rpc.com.my, kylechallis.com and two more.

It is common for these name servers to be used in conjunction with the name servers lisa.ns.cloudflare.com, aiden.ns.cloudflare.com and ns1.colocrossing.com.

Hostnames that resolve to 6 IP addresses:

ken.ns.cloudflare.com carries IP addresses 108.162.193.127, 172.64.33.127 and 173.245.59.127, with 3 other addresses beyond those.

zoe.ns.cloudflare.com carries IP addresses 108.162.192.149, 172.64.32.149 and 173.245.58.149, with 3 other addresses beyond those.

crossczech.cz - robtex.com

crossczech.cz

cz

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`crossczech.cz`

`cz`