shdtech.net - dns.ninja

`shdtech.net`

DNSSEC	⚠️ Not signed
A	87.236.196.128^{🇨🇿 COOLHOUSING-AS87.236.196.0/23 Network of Coolhousing}
		PTR	`postman.shdtech.net`
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	`postman.shdtech.net` ⭐
		A	2a01:5f0:c001:106:39:0:10:600^{🇨🇿 COOLHOUSING-AS2a01:5f0::/32 Network of Coolhousing}
		A	87.236.196.128^{🇨🇿 COOLHOUSING-AS87.236.196.0/23 Network of Coolhousing}
			PTR	`postman.shdtech.net`
MX	`postman2.shdtech.net`⁽¹⁰⁾
		A	2a01:5f0:c001:106:39:0:10:600^{🇨🇿 COOLHOUSING-AS2a01:5f0::/32 Network of Coolhousing}
		A	87.236.196.128^{🇨🇿 COOLHOUSING-AS87.236.196.0/23 Network of Coolhousing}
			PTR	`postman.shdtech.net`
TXT	`v=spf1 mx ip4:77.93.216.0/24 ip4:87.236.196.0/24 ip6:2a01:430:286:0::/64 ip6:...`
SOA	`ns1.websupport.cz`admin@websupport.cz serial=1779651452

`net`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1784211767

Subdomains

postman2.shdtech.net

zen.shdtech.net

postman.shdtech.net

node1.shdtech.net

Same first word

shdtech.cz

shdtech.synology.me

shdtech.net

Similar names

dshtech.net

dshtech.cn

hdtechs.com

hdchest.com

hsdtech.com

hdstech.com.au

dhstech.com

hdstech.com

DNS History

12 records (6 active, 6 former)

○NSalfa.ns.active24.cz2015-05-01 → 2019-04-02 · 4 obs

● 2015-05-01 10:41:26
● 2019-04-02 18:18:22
○ 2026-02-14 21:07:30
○ 2026-07-16 14:50:44

○NSbeta.ns.active24.cz2015-05-01 → 2019-04-02 · 4 obs

● 2015-05-01 10:41:26
● 2019-04-02 18:18:22
○ 2026-02-14 21:07:30
○ 2026-07-16 14:50:44

○NSgama.ns.active24.sk2015-05-01 → 2019-04-02 · 4 obs

● 2015-05-01 10:41:26
● 2019-04-02 18:18:22
○ 2026-02-14 21:07:30
○ 2026-07-16 14:50:44

●NSns1.websupport.cz2026-02-14 → 2026-07-16 · 3 obs

○ 2019-04-02 18:18:22
● 2026-02-14 21:07:30
● 2026-07-16 14:50:44

●NSns2.websupport.cz2026-02-14 → 2026-07-16 · 3 obs

○ 2019-04-02 18:18:22
● 2026-02-14 21:07:30
● 2026-07-16 14:50:44

●NSns3.websupport.eu2026-02-14 → 2026-07-16 · 3 obs

○ 2019-04-02 18:18:22
● 2026-02-14 21:07:30
● 2026-07-16 14:50:44

●MXpostman.shdtech.net2015-05-01 → 2026-07-16 · 2 obs

● 2015-05-01 10:41:26
● 2026-07-16 14:50:44

●MXpostman2.shdtech.net2026-02-14 → 2026-07-16 · 3 obs

○ 2015-05-01 10:41:26
● 2026-02-14 21:07:30
● 2026-07-16 14:50:44

○A2a01:430:286::4002026-02-14 → 2026-05-24 · 5 obs

○ 2019-04-02 18:18:22
● 2026-02-14 21:07:30
● 2026-05-24 12:05:30
○ 2026-06-13 16:36:36
○ 2026-07-16 14:50:44

○A77.93.216.182026-02-14 → 2026-05-24 · 5 obs

○ 2019-04-02 18:18:22
● 2026-02-14 21:07:30
● 2026-05-24 12:05:30
○ 2026-06-13 16:36:36
○ 2026-07-16 14:50:44

○A77.93.216.292015-05-01 → 2019-04-02 · 4 obs

● 2015-05-01 10:41:26
● 2019-04-02 18:18:22
○ 2026-02-14 21:07:30
○ 2026-07-16 14:50:44

●A87.236.196.1282026-06-13 → 2026-07-16 · 3 obs

○ 2026-05-24 12:05:30
● 2026-06-13 16:36:36
● 2026-07-16 14:50:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	m.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net...	-
shdtech.net	ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu	-

✅ Authoritative Response

Server:45.10.97.13

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: 929ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`87.236.196.128`
NS	3	`ns1.websupport.cz, ns2.websupport.cz...`
MX	2	`postman2.shdtech.net (pri: 5), postman.shdtech.net (pri: 10)`
TXT	1	`v=spf1 mx ip4:77.93.216.0/24 ip4:87.236.`
SOA	1	`ns1.websupport.cz admin.websupport.cz`

Analysis

Hierarchy

shdtech.net has four subdomains: postman2.shdtech.net, zen.shdtech.net, postman.shdtech.net and node1.shdtech.net.

IP Addresses

shdtech.net has exactly one IP address — 87.236.196.128.

postman.shdtech.net, ungrad.cz, shdtech.cz plus two other host names have IP numbers in common with shdtech.net.

Name Servers

Three name servers are authoritative for shdtech.net: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.

There is at least partial name server overlap between shdtech.net and other domains — basketmagazin.cz, csac.cz, lj.cz and two more among them.

The name servers ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk are often found in combination with these name servers.

ns1.websupport.cz resolves to 45.10.97.11 and 2a10:bbc0::11. ns2.websupport.cz resolves to 185.71.159.12 and 2a02:250:3::12. ns3.websupport.eu resolves to 45.10.97.13 and 2a10:bbc0::13. All three hostnames point to two IP numbers each.

Mail Servers

shdtech.net uses two mail servers, postman2.shdtech.net and postman.shdtech.net.

shdtech.net and a number of other domains — ungrad.cz, shdtech.cz, dr-haase.cz and shdtechnologies.net among them — share at least some of the same mail servers.

The host names postman2.shdtech.net and postman.shdtech.net both direct to 87.236.196.128 and 2a01:5f0:c001:106:39:0:10:600.

These two host names — postman2.shdtech.net and postman.shdtech.net — each point to 2a01:5f0:c001:106:39:0:10:600 IP addresses.

These two host names — postman2.shdtech.net and postman.shdtech.net — each point to 87.236.196.128 IP addresses.