`tutorials.cz`

DNSSEC	⚠️ Not signed
A	185.28.193.57^{🇨🇿 GRANSY185.28.193.0/24 Network of Gransy s.r.o.}
		PTR	`s04.station.cz`
NS	`ns2.gransy.com` ⭐ ⚠️ Not in parent delegation
		A	2001:19f0:6801:474:5400:1ff:fec5:8efb^{🇫🇷 AS-VULTR2001:19f0:6800::/38 Vultr Assigned Prefix}
		A	2001:19f0:7401:81e0:5400:1ff:fec5:8ef6^{🇬🇧 AS-VULTR2001:19f0:7400::/38 Vultr Assigned Prefix}
		A	95.179.192.121^{🇬🇧 AS-VULTR95.179.192.0/20 Vultr Assigned Prefix}
			PTR	`95.179.192.121.vultrusercontent.com`
		A	217.16.185.221^{🇨🇿 VSHOSTING217.16.176.0/20 III.}
			PTR	`ns2.gransy.com`
		A	217.69.4.49^{🇫🇷 AS-VULTR217.69.0.0/20 Vultr Assigned Prefix}
			PTR	`217.69.4.49.vultrusercontent.com`
NS	`ns.gransy.com` ⚠️ Not in parent delegation
		A	2001:19f0:5001:1caf:5400:1ff:fec5:8d50^{🇳🇱 AS-VULTR2001:19f0:5000::/38 Vultr Assigned Prefix}
		A	45.76.90.43^{🇩🇪 AS-VULTR45.76.80.0/20 Vultr Assigned Prefix}
			PTR	`45.76.90.43.vultrusercontent.com`
		A	77.78.104.149^{🇨🇿 CASABLANCA-AS77.78.96.0/20 Casablanca INT}
			PTR	`ns.gransy.com`
		A	95.179.136.180^{🇳🇱 AS-VULTR95.179.128.0/20 Vultr Assigned Prefix}
			PTR	`95.179.136.180.vultrusercontent.com`
NS	`ns.internetserver.cz` ⚠️ Not in zone NS records
		A	45.76.90.43^{🇩🇪 AS-VULTR45.76.80.0/20 Vultr Assigned Prefix}
			PTR	`45.76.90.43.vultrusercontent.com`
		A	95.179.136.180^{🇳🇱 AS-VULTR95.179.128.0/20 Vultr Assigned Prefix}
			PTR	`95.179.136.180.vultrusercontent.com`
NS	`ns2.internetserver.cz` ⚠️ Not in zone NS records
		A	95.179.192.121^{🇬🇧 AS-VULTR95.179.192.0/20 Vultr Assigned Prefix}
			PTR	`95.179.192.121.vultrusercontent.com`
		A	217.16.185.221^{🇨🇿 VSHOSTING217.16.176.0/20 III.}
			PTR	`ns2.gransy.com`
		A	217.69.4.49^{🇫🇷 AS-VULTR217.69.0.0/20 Vultr Assigned Prefix}
			PTR	`217.69.4.49.vultrusercontent.com`
NS	`ns3.dns-station.net` ⚠️ Not in zone NS records
NS	`ns3.gransy.com` ⚠️ Not in parent delegation
		A	2a02:750:7::2e7^{🇸🇪 GLESYS2a02:750::/29}
			PTR	`2a02-750-7--2e7-static.glesys.net`
		A	2a02:750:8::32^{🇳🇱 GLESYS2a02:750:8::/48 GleSYS AB}
			PTR	`2a02-750-8--32-static.glesys.net`
		A	46.21.100.103^{🇳🇱 GLESYS46.21.100.0/24 GleSYS AB}
			PTR	`46-21-100-103-static.glesys.net`
		A	77.78.126.35^{🇨🇿 CASABLANCA-AS77.78.124.0/22 Casablanca INT}
		A	109.74.7.71^{🇸🇪 GLESYS109.74.0.0/20}
			PTR	`109-74-7-71-static.glesys.net`
NS	`ns4.gransy.com` ⚠️ Not in parent delegation
		A	2001:19f0:5401:69b:5400:1ff:fec5:8f3f^{🇺🇸 AS-VULTR2001:19f0:5400::/38 Vultr Assigned Prefix}
		A	2a00:1a28:2010:1::89^{🇳🇴 GLESYS2a00:1a28::/32 Portlane Network}
			PTR	`2a00-1a28-2010-1--89-static.glesys.net`
		A	66.42.94.136^{🇺🇸 AS-VULTR66.42.80.0/20 Vultr Assigned Prefix}
			PTR	`66.42.94.136.vultrusercontent.com`
		A	80.67.7.209^{🇳🇴 GLESYS80.67.0.0/20 Glesys Network}
			PTR	`80-67-7-209-static.glesys.net`
NS	`ns5.gransy.com` ⚠️ Not in parent delegation
		A	2a02:750:5::538^{🇸🇪 GLESYS2a02:750::/29}
			PTR	`2a02-750-5--538-static.glesys.net`
		A	31.192.227.223^{🇸🇪 GLESYS31.192.224.0/21}
			PTR	`31-192-227-223-static.glesys.net`
MX	`mx.internetserver.cz` ⭐
		A	185.28.193.36^{🇨🇿 GRANSY185.28.193.0/24 Network of Gransy s.r.o.}
			PTR	`mail.gransy.cz`
TXT	`v=spf1 a mx include:gransy.com`
SOA	`ns.gransy.com`root@gransy.com serial=2753308454

`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=1784931443

WOT: SAFE (86/100)

Subdomains

mgate1-backup.tutorials.cz

Same first word

Similar names

DNS History

11 records (10 active, 1 former)

●NSns.gransy.com2026-06-13 → 2026-07-24 · 6 obs

○ 2015-05-18 21:45:06
● 2026-06-13 08:55:08
● 2026-06-15 16:32:56
○ 2026-06-17 00:41:14
● 2026-07-09 19:21:02
● 2026-07-24 22:31:02

●NSns.internetserver.cz2015-05-18 → 2026-07-24 · 2 obs

● 2015-05-18 21:45:06
● 2026-07-24 22:31:02

●NSns2.gransy.com2026-06-13 → 2026-07-24 · 6 obs

○ 2015-05-18 21:45:06
● 2026-06-13 08:55:08
● 2026-06-15 16:32:56
○ 2026-06-17 00:41:14
● 2026-07-09 19:21:02
● 2026-07-24 22:31:02

●NSns2.internetserver.cz2015-05-18 → 2026-07-24 · 2 obs

● 2015-05-18 21:45:06
● 2026-07-24 22:31:02

●NSns3.dns-station.net2015-05-18 → 2026-07-24 · 2 obs

● 2015-05-18 21:45:06
● 2026-07-24 22:31:02

●NSns3.gransy.com2026-06-13 → 2026-07-24 · 6 obs

○ 2015-05-18 21:45:06
● 2026-06-13 08:55:08
● 2026-06-15 16:32:56
○ 2026-06-17 00:41:14
● 2026-07-09 19:21:02
● 2026-07-24 22:31:02

●NSns4.gransy.com2026-06-13 → 2026-07-24 · 6 obs

○ 2015-05-18 21:45:06
● 2026-06-13 08:55:08
● 2026-06-15 16:32:56
○ 2026-06-17 00:41:14
● 2026-07-09 19:21:02
● 2026-07-24 22:31:02

●NSns5.gransy.com2026-06-13 → 2026-07-24 · 6 obs

○ 2015-05-18 21:45:06
● 2026-06-13 08:55:08
● 2026-06-15 16:32:56
○ 2026-06-17 00:41:14
● 2026-07-09 19:21:02
● 2026-07-24 22:31:02

●MXmx.internetserver.cz2015-05-18 → 2026-07-24 · 5 obs

● 2015-05-18 21:45:06
● 2026-06-15 16:32:56
○ 2026-06-17 00:41:14
● 2026-07-09 19:21:02
● 2026-07-24 22:31:02

●A185.28.193.572026-06-13 → 2026-07-24 · 6 obs

○ 2017-05-17 05:50:26
● 2026-06-13 08:55:08
● 2026-06-15 16:32:56
○ 2026-06-17 00:41:14
● 2026-07-09 19:21:02
● 2026-07-24 22:31:02

○A77.78.126.242015-05-18 → 2017-05-17 · 4 obs

● 2015-05-18 21:45:06
● 2017-05-17 05:50:26
○ 2026-06-13 08:55:08
○ 2026-07-24 22:31:02

🔍 DNS Trace

Analysis

Hierarchy

tutorials.cz serves as the parent of mgate1-backup.tutorials.cz.

IP Addresses

tutorials.cz directs to one IP number, which is 185.28.193.57.

Among the host names that share IP numbers with tutorials.cz are hristinageorgievska.com, velkoplosny-tisk.net, postav.eu and two others.

Name Servers

tutorials.cz has 8 name servers — ns2.gransy.com, ns3.gransy.com, ns4.gransy.com and 5 others.

tutorials.cz has at least partial name server overlap with other domains, such as einfo.cz, wp-hosting.org, viatherm.cz and two others.

These name servers are routinely co-deployed with the name servers ns5.gransy.com, ns.gransy.com, ns2.internetserver.cz and two others.

Hostnames that point to five IP numbers:

ns2.gransy.com directs to 95.179.192.121, 217.16.185.221, 217.69.4.49 and two other IP addresses.

ns3.gransy.com directs to 46.21.100.103, 77.78.126.35, 109.74.7.71 and two other IP addresses.

Hosts pointing to four IP addresses:

ns4.gransy.com has four IP addresses: 66.42.94.136, 80.67.7.209, 2001:19f0:5401:69b:5400:1ff:fec5:8f3f and 2a00:1a28:2010:1::89.

ns.gransy.com has four IP addresses: 45.76.90.43, 77.78.104.149, 95.179.136.180 and 2001:19f0:5001:1caf:5400:1ff:fec5:8d50.

Hosts with three IP address records:

ns2.internetserver.cz resolves to 95.179.192.121, 217.16.185.221 and 217.69.4.49.

Hosts with two IP numbers each:

ns5.gransy.com resolves to 31.192.227.223 and 2a02:750:5::538.

ns.internetserver.cz resolves to 45.76.90.43 and 95.179.136.180.

The host names ns2.gransy.com and ns2.internetserver.cz both resolve to 95.179.192.121 IP addresses.

The host names ns2.gransy.com and ns2.internetserver.cz both resolve to 217.16.185.221 IP addresses.

The host names ns2.gransy.com and ns2.internetserver.cz both resolve to 217.69.4.49 IP addresses.

The host names ns.gransy.com and ns.internetserver.cz both resolve to 45.76.90.43 IP addresses.

The host names ns.gransy.com and ns.internetserver.cz both resolve to 95.179.136.180 IP addresses.

Mail Servers

tutorials.cz routes its mail through a single mail server, mx.internetserver.cz.

tutorials.cz has the same mail server arrangement as a number of other domains, for example siebdruck-maschinen.eu, mkr-group.eu, zemezeme.cz and two more.

tutorials.cz shares at least some of its mail servers with other domains — for example mises.cz, radoxist.com, spaceorigin.com and two more.

mx.internetserver.cz points to one IP number — 185.28.193.36.

tutorials.cz - robtex.com

tutorials.cz

cz

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`tutorials.cz`

`cz`