zdev.cz - dns.ninja

`zdev.cz`

DNSSEC	⚠️ Not signed
NS	`ns.gransy.com` ⚠️ Not in zone NS records
		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	`ns2.gransy.com` ⚠️ Not in zone NS records
		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	`ns3.gransy.com` ⚠️ Not in zone NS records
		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 zone NS records
		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 zone NS records
		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`

`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=1782746238

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DNS History

9 records (5 active, 4 former)

●NSns.gransy.com2026-03-27 → 2026-06-29 · 3 obs

○ 2018-05-13 06:10:36
● 2026-03-27 12:56:20
● 2026-06-29 15:47:14

○NSns1.ignum.com2018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 06:10:36
○ 2026-03-27 12:56:20
○ 2026-06-29 15:47:14

●NSns2.gransy.com2026-03-27 → 2026-06-29 · 3 obs

○ 2018-05-13 06:10:36
● 2026-03-27 12:56:20
● 2026-06-29 15:47:14

○NSns2.ignum.cz2018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 06:10:36
○ 2026-03-27 12:56:20
○ 2026-06-29 15:47:14

●NSns3.gransy.com2026-03-27 → 2026-06-29 · 3 obs

○ 2018-05-13 06:10:36
● 2026-03-27 12:56:20
● 2026-06-29 15:47:14

●NSns4.gransy.com2026-03-27 → 2026-06-29 · 3 obs

○ 2018-05-13 06:10:36
● 2026-03-27 12:56:20
● 2026-06-29 15:47:14

●NSns5.gransy.com2026-03-27 → 2026-06-29 · 3 obs

○ 2018-05-13 06:10:36
● 2026-03-27 12:56:20
● 2026-06-29 15:47:14

○MXemail.ignum.cz2018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 06:10:36
○ 2026-03-27 12:56:20
○ 2026-06-29 15:47:14

○MXemail2.ignum.cz2018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 06:10:36
○ 2026-03-27 12:56:20
○ 2026-06-29 15:47:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz	8 records
zdev.cz	ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com...	-

✅ Authoritative Response

Server:45.76.90.43

NS records: ns.gransy.com, ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com

🔒 DNSSEC Status

❌ Bogus (DNSSEC validation failed)

No DNSKEY for zdev.cz

⏱️ Timing

Total: 2649ms | Queries: -

📄 Records

Type	Count	Sample Data

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (a.ns.nic.cz, a.ns.nic.cz, c.ns.nic.cz...)

Analysis

Name Servers

Delegation for zdev.cz is to five name servers: ns2.gransy.com, ns3.gransy.com, ns4.gransy.com and two others.

At least some of zdev.cz's name servers are shared with other domains, for example autosplus.me, l-p.cz, mail.isoqar.cz and two more.

These name servers are frequently paired with the name servers ns5.gransy.com, ns.gransy.com, ns2.internetserver.cz and two others.

Host names that resolve to five IP addresses:

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

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

Host names resolving to four IP addresses:

ns4.gransy.com directs to 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 directs to 45.76.90.43, 77.78.104.149, 95.179.136.180 and 2001:19f0:5001:1caf:5400:1ff:fec5:8d50.

Host names with two IP numbers:

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