webdevelopment.cz - dns.ninja

`webdevelopment.cz`

DNSSEC	🔒 Signed (DS record present)
A	2001:67c:e94:1:1:5bef:c90a:1^{Blindspot2001:67c:e94::/48 THINLINE-BlindSpot}
		PTR	`rproxy7.thinline.cz`
A	91.239.201.10^{🇨🇿 Blindspot91.239.200.0/23 THINLINE-BlindSpot}
NS	`ns1.thinline.cz` ⭐
		A	2001:67c:e94:0:1:5bef:c8f3:1^{Blindspot2001:67c:e94::/48 THINLINE-BlindSpot}
			PTR	`ns1.thinline.cz`
		A	91.239.200.243^{🇨🇿 Blindspot91.239.200.0/23 THINLINE-BlindSpot}
			PTR	`ns1.thinline.cz`
NS	`ns2.thinline.cz`
		A	2001:4de8:fa22:0:1:5264:602:1^{🇨🇿 QUANTCOM-AS2001:4de8::/32 Dial Telecom, a.s.}
			PTR	`ns2.thinline.cz`
		A	82.100.6.2^{🇨🇿 QUANTCOM-AS82.100.0.0/18 Dial Telecom, a.s.}
			PTR	`ns2.thinline.cz`
NS	`ns3.cesky-hosting.eu`
		A	2001:67c:e94:1:1:5bef:ca12:1^{Blindspot2001:67c:e94::/48 THINLINE-BlindSpot}
			PTR	`ns3.cesky-hosting.eu`
		A	91.239.202.18^{🇨🇿 Blindspot91.239.202.0/23 THINLINE-BlindSpot}
			PTR	`ns3.cesky-hosting.eu`
MX	`mx1d10.thinline.cz` ⭐
		A	2001:67c:e94:0:1:5bef:c80e:1^{Blindspot2001:67c:e94::/48 THINLINE-BlindSpot}
			PTR	`mx1d10.thinline.cz`
		A	91.239.200.14^{🇨🇿 Blindspot91.239.200.0/23 THINLINE-BlindSpot}
			PTR	`mx1d10.thinline.cz`
MX	`mx1b20.thinline.cz`⁽²⁰⁾
		A	2001:4de8:fa22:0:1:5264:603:1^{🇨🇿 QUANTCOM-AS2001:4de8::/32 Dial Telecom, a.s.}
			PTR	`mx1b20.thinline.cz`
		A	82.100.6.3^{🇨🇿 QUANTCOM-AS82.100.0.0/18 Dial Telecom, a.s.}
			PTR	`mx1b20.thinline.cz`
SOA	`ns1.thinline.cz`hostmaster@webdevelopment.cz serial=1533054108

`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=1784056637

Same first word

Similar names

developmentweb.com

DNS History

13 records (7 active, 6 former)

○NSns1.fatcow.com2015-08-03 → 2015-12-12 · 4 obs

● 2015-08-03 01:41:32
● 2015-12-12 04:20:42
○ 2016-03-21 06:15:14
○ 2026-07-14 20:14:28

●NSns1.thinline.cz2017-03-21 → 2026-07-14 · 3 obs

○ 2016-03-21 06:15:14
● 2017-03-21 01:26:06
● 2026-07-14 20:14:28

○NSns2.fatcow.com2015-08-03 → 2015-12-12 · 4 obs

● 2015-08-03 01:41:32
● 2015-12-12 04:20:42
○ 2016-03-21 06:15:14
○ 2026-07-14 20:14:28

●NSns2.thinline.cz2017-03-21 → 2026-07-14 · 3 obs

○ 2016-03-21 06:15:14
● 2017-03-21 01:26:06
● 2026-07-14 20:14:28

●NSns3.cesky-hosting.eu2017-03-21 → 2026-07-14 · 3 obs

○ 2016-03-21 06:15:14
● 2017-03-21 01:26:06
● 2026-07-14 20:14:28

○MXmx.webdevelopment.cz2015-08-03 → 2015-12-12 · 4 obs

● 2015-08-03 01:41:32
● 2015-12-12 04:20:42
○ 2016-03-21 06:15:14
○ 2026-07-14 20:14:28

●MXmx1b20.thinline.cz2017-03-21 → 2026-07-14 · 3 obs

○ 2016-03-21 06:15:14
● 2017-03-21 01:26:06
● 2026-07-14 20:14:28

●MXmx1d10.thinline.cz2017-03-21 → 2026-07-14 · 3 obs

○ 2016-03-21 06:15:14
● 2017-03-21 01:26:06
● 2026-07-14 20:14:28

●A2001:67c:e94:1:1:5bef:c90a:12026-03-26 → 2026-07-14 · 3 obs

○ 2020-01-17 14:31:32
● 2026-03-26 05:19:18
● 2026-07-14 20:14:28

○A2a00:1ed0:2:1:1:5bef:c90c:12017-03-21 → 2020-01-17 · 5 obs

○ 2016-03-21 06:15:14
● 2017-03-21 01:26:06
● 2020-01-17 14:31:32
○ 2026-03-26 05:19:18
○ 2026-07-14 20:14:28

○A65.254.248.1762015-08-03 → 2015-12-12 · 4 obs

● 2015-08-03 01:41:32
● 2015-12-12 04:20:42
○ 2016-03-21 06:15:14
○ 2026-07-14 20:14:28

●A91.239.201.102026-03-26 → 2026-07-14 · 3 obs

○ 2020-01-17 14:31:32
● 2026-03-26 05:19:18
● 2026-07-14 20:14:28

○A91.239.201.122017-03-21 → 2020-01-17 · 5 obs

○ 2016-03-21 06:15:14
● 2017-03-21 01:26:06
● 2020-01-17 14:31:32
○ 2026-03-26 05:19:18
○ 2026-07-14 20:14:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
webdevelopment.cz	ns1.thinline.cz, ns2.thinline.cz, ns3.cesky-hosting.eu	4 records

✅ Authoritative Response

Server:91.239.202.18

NS records: ns1.thinline.cz, ns2.thinline.cz, ns3.cesky-hosting.eu

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 3032ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`91.239.201.10`
AAAA	1	`2001:67c:e94:1:1:5bef:c90a:1`
NS	3	`ns3.cesky-hosting.eu, ns1.thinline.cz...`
MX	2	`mx1b20.thinline.cz (pri: 20), mx1d10.thinline.cz (pri: 10)`
SOA	1	`ns1.thinline.cz hostmaster.webdevelopmen`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.thinline.cz, ns1.thinline.cz, ns2.thinline.cz...)

Analysis

IP Addresses

webdevelopment.cz points to the IP addresses 91.239.201.10 and 2001:67c:e94:1:1:5bef:c90a:1

Two other host names, along with www.minidroid.cz, www.drahomirasinova.cz and adenik.cz, also share IP numbers with webdevelopment.cz.

Name Servers

webdevelopment.cz is served by three name servers: ns1.thinline.cz, ns2.thinline.cz and ns3.cesky-hosting.eu.

The name servers of webdevelopment.cz overlap at least partially with those of other domains — among them hostan.eu, hostee.it, mpes.cz and two more.

The hostnames ns1.thinline.cz, ns2.thinline.cz and ns3.cesky-hosting.eu each direct to two IP addresses — ns1.thinline.cz to 91.239.200.243 and 2001:67c:e94:0:1:5bef:c8f3:1, ns2.thinline.cz to 82.100.6.2 and 2001:4de8:fa22:0:1:5264:602:1, and ns3.cesky-hosting.eu to 91.239.202.18 and 2001:67c:e94:1:1:5bef:ca12:1.

Mail Servers

webdevelopment.cz is served by two mail servers, mx1b20.thinline.cz and mx1d10.thinline.cz.

Among the domains sharing a mail server setup with webdevelopment.cz are acvov.cz, repix.org, soulsound.cz and two others.

mx1b20.thinline.cz resolves to 82.100.6.3 and 2001:4de8:fa22:0:1:5264:603:1. Likewise, mx1d10.thinline.cz resolves to 91.239.200.14 and 2001:67c:e94:0:1:5bef:c80e:1 — two IP addresses apiece.