`sumava.cz`

DNSSEC	⚠️ Not signed
A	185.28.193.35^{🇨🇿 GRANSY185.28.193.0/24 Network of Gransy s.r.o.}
		PTR	`s36.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
		A	46.21.100.103^{🇳🇱 GLESYS46.21.100.0/24 GleSYS AB}
			PTR	`46-21-100-103-static.glesys.net`
		A	109.74.7.71^{🇸🇪 GLESYS109.74.0.0/20}
			PTR	`109-74-7-71-static.glesys.net`
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 Portlane 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=2753306067

`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=1776107862

Same first word

sumava.eu

sumava.cz

sumava.net

sumava.de

sumava.com

Similar names

vamusa.com

vasuma.se

savuma.com

vsuama.org

amvusa.com

vuasam.com

avasum.com

mvausa.com

vasuma.com

muvasa.com

avamus.org

avamus.de

DNS History

18 records (10 active, 8 former)

○NSns.forpsi.cn2008-04-17 → 2008-04-17 · 3 obs

● 2008-04-17 01:26:42
○ 2015-08-03 09:42:20
○ 2026-04-13 19:51:30

○NSns.forpsi.cz2008-04-17 → 2008-04-17 · 3 obs

● 2008-04-17 01:26:42
○ 2015-08-03 09:42:20
○ 2026-04-13 19:51:30

○NSns.forpsi.net2008-04-17 → 2008-04-17 · 3 obs

● 2008-04-17 01:26:42
○ 2015-08-03 09:42:20
○ 2026-04-13 19:51:30

○NSns.forpsi.us2008-04-17 → 2008-04-17 · 3 obs

● 2008-04-17 01:26:42
○ 2015-08-03 09:42:20
○ 2026-04-13 19:51:30

●NSns.gransy.com2026-03-12 → 2026-04-13 · 3 obs

○ 2015-08-03 09:42:20
● 2026-03-12 09:08:54
● 2026-04-13 19:51:30

●NSns.internetserver.cz2015-08-03 → 2026-04-13 · 3 obs

○ 2008-04-17 01:26:42
● 2015-08-03 09:42:20
● 2026-04-13 19:51:30

●NSns2.gransy.com2026-03-12 → 2026-04-13 · 3 obs

○ 2015-08-03 09:42:20
● 2026-03-12 09:08:54
● 2026-04-13 19:51:30

●NSns2.internetserver.cz2015-08-03 → 2026-04-13 · 3 obs

○ 2008-04-17 01:26:42
● 2015-08-03 09:42:20
● 2026-04-13 19:51:30

●NSns3.dns-station.net2015-08-03 → 2026-04-13 · 3 obs

○ 2008-04-17 01:26:42
● 2015-08-03 09:42:20
● 2026-04-13 19:51:30

●NSns3.gransy.com2026-03-12 → 2026-04-13 · 3 obs

○ 2015-08-03 09:42:20
● 2026-03-12 09:08:54
● 2026-04-13 19:51:30

●NSns4.gransy.com2026-03-12 → 2026-04-13 · 3 obs

○ 2015-08-03 09:42:20
● 2026-03-12 09:08:54
● 2026-04-13 19:51:30

●NSns5.gransy.com2026-03-12 → 2026-04-13 · 3 obs

○ 2015-08-03 09:42:20
● 2026-03-12 09:08:54
● 2026-04-13 19:51:30

●MXmx.internetserver.cz2015-08-03 → 2026-04-13 · 3 obs

○ 2008-04-17 01:26:42
● 2015-08-03 09:42:20
● 2026-04-13 19:51:30

○MXwebin.cz2008-04-17 → 2008-04-17 · 3 obs

● 2008-04-17 01:26:42
○ 2015-08-03 09:42:20
○ 2026-04-13 19:51:30

●A185.28.193.352026-03-12 → 2026-04-13 · 3 obs

○ 2017-12-25 05:55:24
● 2026-03-12 09:08:54
● 2026-04-13 19:51:30

○A185.28.193.812017-12-25 → 2017-12-25 · 4 obs

○ 2016-11-28 03:51:16
● 2017-12-25 05:55:24
○ 2026-03-12 09:08:54
○ 2026-04-13 19:51:30

○A81.0.237.382015-08-03 → 2016-11-28 · 5 obs

○ 2008-04-17 01:26:42
● 2015-08-03 09:42:20
● 2016-11-28 03:51:16
○ 2017-12-25 05:55:24
○ 2026-04-13 19:51:30

○A88.86.107.152008-04-17 → 2008-04-17 · 3 obs

● 2008-04-17 01:26:42
○ 2015-08-03 09:42:20
○ 2026-04-13 19:51:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz	-
sumava.cz	ns.internetserver.cz, ns2.internetserver.cz, ns3.dns-station.net	-

✅ Authoritative Response

Server:46.21.100.103

NS records: ns.internetserver.cz, ns2.internetserver.cz, ns3.dns-station.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sumava.cz (unsigned zone)

⏱️ Timing

Total: 1545ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.28.193.35`
NS	5	`ns2.gransy.com, ns4.gransy.com...`
MX	1	`mx.internetserver.cz (pri: 10)`
TXT	1	`v=spf1 a mx include:gransy.com`
SOA	1	`ns.gransy.com root.gransy.com`

Analysis

IP Addresses

sumava.cz points to a single IP address: 185.28.193.35.

Other host names such as mevald.cz, acskoly.cz, topnor.com, tynka.eu and 4its.cz share IP numbers with sumava.cz.

Name Servers

sumava.cz delegates to eight name servers: ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com, ns.gransy.com, ns2.internetserver.cz, ns.internetserver.cz and ns3.dns-station.net.

At least part of the name servers for sumava.cz are shared with other domains, for instance extraflame.cz, kdb.cz, vzvgroup.pt, software-deals.hu and rowan.accountants.

Host names by IP count:

Five IP numbers

The host name ns2.gransy.com points to: 2001:19f0:6801:474:5400:1ff:fec5:8efb, 2001:19f0:7401:81e0:5400:1ff:fec5:8ef6, 95.179.192.121, 217.16.185.221 and 217.69.4.49.

The host name ns3.gransy.com points to: 2a02:750:7::2e7, 2a02:750:8::32, 46.21.100.103, 77.78.126.35 and 109.74.7.71.

Four IP numbers

The host name ns4.gransy.com points to: 2001:19f0:5401:69b:5400:1ff:fec5:8f3f, 2a00:1a28:2010:1::89, 66.42.94.136 and 80.67.7.209.

The host name ns.gransy.com points to: 2001:19f0:5001:1caf:5400:1ff:fec5:8d50, 45.76.90.43, 77.78.104.149 and 95.179.136.180.

Three IP numbers

The host name ns2.internetserver.cz points to: 95.179.192.121, 217.16.185.221 and 217.69.4.49.

Two IP numbers

The host name ns5.gransy.com points to: 2a02:750:5::538 and 31.192.227.223.

The host name ns.internetserver.cz points to: 45.76.90.43 and 95.179.136.180.

The host name ns3.dns-station.net points to: 46.21.100.103 and 109.74.7.71.

Host names that point to 95.179.192.121: ns2.gransy.com and ns2.internetserver.cz.

Host names that point to 217.16.185.221: ns2.gransy.com and ns2.internetserver.cz.

Host names that point to 217.69.4.49: ns2.gransy.com and ns2.internetserver.cz.

Host names that point to 46.21.100.103: ns3.gransy.com and ns3.dns-station.net.

Host names that point to 109.74.7.71: ns3.gransy.com and ns3.dns-station.net.

Host names that point to 45.76.90.43: ns.gransy.com and ns.internetserver.cz.

Host names that point to 95.179.136.180: ns.gransy.com and ns.internetserver.cz.

Mail Servers

The mail server for sumava.cz is mx.internetserver.cz.

sumava.cz uses the same mail server setup as other domains, for instance vrastil.info, fizz.cz, stp-brno.cz, secas.cz and kodeda.name.

sumava.cz shares some mail servers with other domains at least partially, for example piwro.cz, hcletci.cz and japafoods.cz.

Host mx.internetserver.cz points to IP 185.28.193.36.

sumava.cz - robtex.com

sumava.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

`sumava.cz`

`cz`