improtech.cz - dns.ninja

`improtech.cz`

DNSSEC	🔒 Signed (DS record present)
A	37.9.175.165^{🇸🇰 WEBSUPPORT-SRO-SK-AS37.9.175.0/24}
		PTR	`ing.r3.websupport.sk`
NS	`ns1.websupport.cz` ⭐
		A	2a10:bbc0::11^{🇨🇿 ACTIVE24-AS2a10:bbc0::/32}
			PTR	`ns1.websupport.eu`
		A	45.10.97.11^{🇨🇿 ACTIVE24-AS45.10.97.0/24}
			PTR	`ns1.websupport.eu`
NS	`ns2.websupport.cz`
		A	2a02:250:3::12^{🇸🇪 ACTIVE24-AS2a02:250:3::/48}
			PTR	`ns2.websupport.eu`
		A	185.71.159.12^{🇸🇪 ACTIVE24-AS185.71.159.0/24}
			PTR	`ns2.websupport.eu`
NS	`ns3.websupport.eu`
		A	2a10:bbc0::13^{🇨🇿 ACTIVE24-AS2a10:bbc0::/32}
			PTR	`ns3.websupport.eu`
		A	45.10.97.13^{🇨🇿 ACTIVE24-AS45.10.97.0/24}
			PTR	`ns3.websupport.eu`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c06::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bg-in-f27.1e100.net`
		A	64.233.180.27^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f27.1e100.net`
			PTR	`pe-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`google-site-verification=lQPeHF44P3b2UygWW66SltaF34h65gvC4BlChFrkDn4`
SOA	`ns1.websupport.cz`admin@websupport.cz serial=1777266762

`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=1781876838

Same first word

improtech.com

improtech.nl

improtech.cl

improtech.eu

improtech.net

improtech.cz

improtech.co.uk

Similar names

DNS History

14 records (9 active, 5 former)

○NSalfa.ns.active24.cz2015-05-23 → 2020-02-21 · 4 obs

● 2015-05-23 04:56:48
● 2020-02-21 07:16:02
○ 2026-03-16 22:55:40
○ 2026-06-19 14:15:36

○NSbeta.ns.active24.cz2015-05-23 → 2020-02-21 · 4 obs

● 2015-05-23 04:56:48
● 2020-02-21 07:16:02
○ 2026-03-16 22:55:40
○ 2026-06-19 14:15:36

○NSgama.ns.active24.sk2015-05-23 → 2020-02-21 · 4 obs

● 2015-05-23 04:56:48
● 2020-02-21 07:16:02
○ 2026-03-16 22:55:40
○ 2026-06-19 14:15:36

●NSns1.websupport.cz2026-03-16 → 2026-06-19 · 3 obs

○ 2020-02-21 07:16:02
● 2026-03-16 22:55:40
● 2026-06-19 14:15:36

●NSns2.websupport.cz2026-03-16 → 2026-06-19 · 3 obs

○ 2020-02-21 07:16:02
● 2026-03-16 22:55:40
● 2026-06-19 14:15:36

●NSns3.websupport.eu2026-03-16 → 2026-06-19 · 3 obs

○ 2020-02-21 07:16:02
● 2026-03-16 22:55:40
● 2026-06-19 14:15:36

●MXalt1.aspmx.l.google.com2017-02-11 → 2026-06-19 · 3 obs

○ 2016-01-27 16:32:02
● 2017-02-11 22:59:00
● 2026-06-19 14:15:36

●MXalt2.aspmx.l.google.com2017-02-11 → 2026-06-19 · 3 obs

○ 2016-01-27 16:32:02
● 2017-02-11 22:59:00
● 2026-06-19 14:15:36

●MXalt3.aspmx.l.google.com2017-02-11 → 2026-06-19 · 3 obs

○ 2016-01-27 16:32:02
● 2017-02-11 22:59:00
● 2026-06-19 14:15:36

●MXalt4.aspmx.l.google.com2017-02-11 → 2026-06-19 · 3 obs

○ 2016-01-27 16:32:02
● 2017-02-11 22:59:00
● 2026-06-19 14:15:36

●MXaspmx.l.google.com2017-02-11 → 2026-06-19 · 3 obs

○ 2016-01-27 16:32:02
● 2017-02-11 22:59:00
● 2026-06-19 14:15:36

○MXint.khnet.cz2015-05-23 → 2016-01-27 · 4 obs

● 2015-05-23 04:56:48
● 2016-01-27 16:32:02
○ 2017-02-11 22:59:00
○ 2026-06-19 14:15:36

●A37.9.175.1652026-03-16 → 2026-06-19 · 3 obs

○ 2020-02-21 07:16:02
● 2026-03-16 22:55:40
● 2026-06-19 14:15:36

○A81.95.96.292015-05-23 → 2020-02-21 · 4 obs

● 2015-05-23 04:56:48
● 2020-02-21 07:16:02
○ 2026-03-16 22:55:40
○ 2026-06-19 14:15:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
improtech.cz	ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu	-

✅ Authoritative Response

Server:185.71.159.12

NS records: ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1035ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`37.9.175.165`
NS	3	`ns1.websupport.cz, ns2.websupport.cz...`
MX	5	`aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)...`
TXT	1	`google-site-verification=lQPeHF44P3b2Uyg`
SOA	1	`ns1.websupport.cz admin.websupport.cz`

Analysis

IP Addresses

improtech.cz has exactly one IP address — 37.9.175.165.

dkn.cz, bazarmix.cz, auto-centrum.cz plus two other host names have IP numbers in common with improtech.cz.

Name Servers

improtech.cz is served by three name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.

improtech.cz has at least partial name server overlap with other domains, such as koubovsky.cz, davinus.cz, projectint.eu and two others.

The hostnames ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu each direct to two IP addresses — ns1.websupport.cz to 45.10.97.11 and 2a10:bbc0::11, ns2.websupport.cz to 185.71.159.12 and 2a02:250:3::12, and ns3.websupport.eu to 45.10.97.13 and 2a10:bbc0::13.

Mail Servers

Mail for improtech.cz is handled by five mail servers, namely aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

At least some of the mail servers used by improtech.cz are shared with other domains: jcs.k12.oh.us, cacham.com, acceleratedappraisals.net and two others among them.

These mail servers often appear in conjunction with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names pointing to two IP addresses:

The A records for aspmx.l.google.com return 64.233.180.27 and 2607:f8b0:4004:c06::1b.

The A records for alt1.aspmx.l.google.com return 108.177.123.26 and 2800:3f0:4003:c0f::1a.

The A records for alt2.aspmx.l.google.com return 172.253.116.27 and 2a00:1450:400b:c02::1a.

The A records for alt3.aspmx.l.google.com return 192.178.223.27 and 2a00:1450:4009:c0f::1b.

The A records for alt4.aspmx.l.google.com return 172.253.157.26 and 2a00:1450:400c:c23::1a.