`sleva24.cz`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:1753^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:d1d8^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.23.83^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.209.216^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`may.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a87^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`may.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c087^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`may.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2087^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`may.ns.cloudflare.com`
		A	108.162.192.135^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`may.ns.cloudflare.com`
		A	172.64.32.135^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`may.ns.cloudflare.com`
		A	173.245.58.135^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`may.ns.cloudflare.com`
NS	`ray.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b8a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ray.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c18a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ray.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:218a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ray.ns.cloudflare.com`
		A	108.162.193.138^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ray.ns.cloudflare.com`
		A	172.64.33.138^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ray.ns.cloudflare.com`
		A	173.245.59.138^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ray.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.23.83, 172.67.209.216
		IPv6 hints	2606:4700:3030::6815:1753, 2606:4700:3037::ac43:d1d8
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=13, name=cloudflare-ech.com
SOA	`may.ns.cloudflare.com`dns@cloudflare.com serial=2407534131

`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=1785185240

⚠️ On DNS blocklist: tif

Same first word

sleva24.cz

Similar names

slave24.at

slave24.net

slave24.com

DNS History

16 records (6 active, 10 former)

●NSmay.ns.cloudflare.com2026-07-24 → 2026-07-27 · 3 obs

○ 2017-02-14 09:07:44
● 2026-07-24 20:07:56
● 2026-07-27 21:40:00

○NSns1.eurodns.com2016-07-04 → 2017-02-14 · 5 obs

○ 2016-03-07 01:35:38
● 2016-07-04 04:00:42
● 2017-02-14 09:07:44
○ 2026-07-24 20:07:56
○ 2026-07-27 21:40:00

○NSns1.netnames.net2015-08-06 → 2016-03-07 · 4 obs

● 2015-08-06 16:06:42
● 2016-03-07 01:35:38
○ 2016-07-04 04:00:42
○ 2026-07-27 21:40:00

○NSns2.eurodns.com2016-07-04 → 2017-02-14 · 5 obs

○ 2016-03-07 01:35:38
● 2016-07-04 04:00:42
● 2017-02-14 09:07:44
○ 2026-07-24 20:07:56
○ 2026-07-27 21:40:00

○NSns2.netnames.net2015-08-06 → 2016-03-07 · 4 obs

● 2015-08-06 16:06:42
● 2016-03-07 01:35:38
○ 2016-07-04 04:00:42
○ 2026-07-27 21:40:00

○NSns3.eurodns.com2016-07-04 → 2017-02-14 · 5 obs

○ 2016-03-07 01:35:38
● 2016-07-04 04:00:42
● 2017-02-14 09:07:44
○ 2026-07-24 20:07:56
○ 2026-07-27 21:40:00

○NSns4.eurodns.com2016-07-04 → 2017-02-14 · 5 obs

○ 2016-03-07 01:35:38
● 2016-07-04 04:00:42
● 2017-02-14 09:07:44
○ 2026-07-24 20:07:56
○ 2026-07-27 21:40:00

○NSns5.netnames.net2015-08-06 → 2016-03-07 · 4 obs

● 2015-08-06 16:06:42
● 2016-03-07 01:35:38
○ 2016-07-04 04:00:42
○ 2026-07-27 21:40:00

○NSns6.netnames.net2015-08-06 → 2016-03-07 · 4 obs

● 2015-08-06 16:06:42
● 2016-03-07 01:35:38
○ 2016-07-04 04:00:42
○ 2026-07-27 21:40:00

●NSray.ns.cloudflare.com2026-07-24 → 2026-07-27 · 3 obs

○ 2017-02-14 09:07:44
● 2026-07-24 20:07:56
● 2026-07-27 21:40:00

●A104.21.23.832026-07-24 → 2026-07-27 · 3 obs

○ 2017-02-14 09:07:44
● 2026-07-24 20:07:56
● 2026-07-27 21:40:00

●A172.67.209.2162026-07-24 → 2026-07-27 · 3 obs

○ 2017-02-14 09:07:44
● 2026-07-24 20:07:56
● 2026-07-27 21:40:00

●A2606:4700:3030::6815:17532026-07-24 → 2026-07-27 · 3 obs

○ 2017-02-14 09:07:44
● 2026-07-24 20:07:56
● 2026-07-27 21:40:00

●A2606:4700:3037::ac43:d1d82026-07-24 → 2026-07-27 · 3 obs

○ 2017-02-14 09:07:44
● 2026-07-24 20:07:56
● 2026-07-27 21:40:00

○A80.92.65.532016-07-04 → 2017-02-14 · 5 obs

○ 2016-03-07 01:35:38
● 2016-07-04 04:00:42
● 2017-02-14 09:07:44
○ 2026-07-24 20:07:56
○ 2026-07-27 21:40:00

○A81.2.196.602015-08-06 → 2016-03-07 · 4 obs

● 2015-08-06 16:06:42
● 2016-03-07 01:35:38
○ 2016-07-04 04:00:42
○ 2026-07-27 21:40:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
sleva24.cz	may.ns.cloudflare.com, ray.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.138

NS records: may.ns.cloudflare.com, ray.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sleva24.cz (unsigned zone)

⏱️ Timing

Total: 1899ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.209.216, 104.21.23.83`
AAAA	2	`2606:4700:3030::6815:1753, 2606:4700:3037::ac43:d1d8`
NS	2	`may.ns.cloudflare.com, ray.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`may.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

sleva24.cz has four IP addresses: 104.21.23.83, 172.67.209.216, 2606:4700:3030::6815:1753 and 2606:4700:3037::ac43:d1d8.

Two other host names, along with www.linkooerdoll.com, investorm.net and ohiofarmer.com, also share IP numbers with sleva24.cz.

Name Servers

sleva24.cz is delegated to two name servers: may.ns.cloudflare.com and ray.ns.cloudflare.com.

sleva24.cz shares its NS records with other domains, for example hiddenhearing.com.au, muirwoods.net, mri-design.com.au and two others.

sleva24.cz has at least partial name server overlap with other domains, such as mytownsends.shop, fitflicks.biz, mangystau-view.com and two others.

It is common to see these name servers used together with name servers marjory.ns.cloudflare.com and ines.ns.cloudflare.com.

DNS names with 6 IP addresses:

may.ns.cloudflare.com resolves to 108.162.192.135, 172.64.32.135, 173.245.58.135 and 3 other IP addresses.

ray.ns.cloudflare.com resolves to 108.162.193.138, 172.64.33.138, 173.245.59.138 and 3 other IP addresses.

sleva24.cz - robtex.com

sleva24.cz

cz

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`sleva24.cz`

`cz`