polytechna.eu - dns.ninja

`polytechna.eu`

DNSSEC	🔒 Signed (DS record present)
A	2a00:4b40:aaaa:2011::5^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
A	37.9.175.212^{🇸🇰 WEBSUPPORT-SRO-SK-AS37.9.175.0/24}
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	`mailin1.polytechna.eu` ⭐
		A	2a00:4b40:aaaa:2101:45:13:137:105^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
		A	45.13.137.103^{🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24}
			PTR	`m1-u5-mx.websupport.cz`
MX	`mailin2.polytechna.eu`⁽¹⁰⁰⁾
		A	2a00:4b40:aaaa:2101:45:13:137:103^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
			PTR	`mx10.websupport.cz`
		A	45.13.137.111^{🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24}
			PTR	`m1-u7-mx.websupport.sk`
TXT	`MS=BF92BE0D50E2B6700BA53BBB76BC1D527B2F552D`
SOA	`ns1.websupport.cz`admin@websupport.cz serial=1778764015

`eu`

	DNSSEC	🔒 Signed (DS record present)
	NS	`si.dns.eu` ⭐
	NS	`be.dns.eu`
	NS	`w.dns.eu`
	NS	`x.dns.eu`
	NS	`y.dns.eu`
	SOA	`si.dns.eu`tech@eurid.eu serial=1125230605

WOT: UNKNOWN (68/100)

Subdomains

mailin2.polytechna.eu

www.polytechna.eu

mailin1.polytechna.eu

Same first word

polytechna.ch

polytechna.eu

polytechna.cz

polytechna.com

Similar names

DNS History

15 records (7 active, 8 former)

○NSalfa.ns.active24.cz2015-07-26 → 2019-12-25 · 4 obs

● 2015-07-26 11:41:50
● 2019-12-25 09:24:56
○ 2026-05-11 04:25:00
○ 2026-06-16 01:44:18

○NSbeta.ns.active24.cz2015-07-26 → 2019-12-25 · 4 obs

● 2015-07-26 11:41:50
● 2019-12-25 09:24:56
○ 2026-05-11 04:25:00
○ 2026-06-16 01:44:18

●NSns1.websupport.cz2026-05-11 → 2026-06-16 · 3 obs

○ 2019-12-25 09:24:56
● 2026-05-11 04:25:00
● 2026-06-16 01:44:18

●NSns2.websupport.cz2026-05-11 → 2026-06-16 · 3 obs

○ 2019-12-25 09:24:56
● 2026-05-11 04:25:00
● 2026-06-16 01:44:18

●NSns3.websupport.eu2026-05-11 → 2026-06-16 · 3 obs

○ 2019-12-25 09:24:56
● 2026-05-11 04:25:00
● 2026-06-16 01:44:18

○MXin.smtp.cz2015-07-26 → 2016-03-03 · 4 obs

● 2015-07-26 11:41:50
● 2016-03-03 12:59:26
○ 2017-02-17 13:38:48
○ 2026-06-16 01:44:18

●MXmailin1.polytechna.eu2026-05-11 → 2026-06-16 · 3 obs

○ 2019-12-25 09:24:56
● 2026-05-11 04:25:00
● 2026-06-16 01:44:18

●MXmailin2.polytechna.eu2026-05-11 → 2026-06-16 · 3 obs

○ 2019-12-25 09:24:56
● 2026-05-11 04:25:00
● 2026-06-16 01:44:18

○MXmx.smtp.cz2015-07-26 → 2016-03-03 · 4 obs

● 2015-07-26 11:41:50
● 2016-03-03 12:59:26
○ 2017-02-17 13:38:48
○ 2026-06-16 01:44:18

○MXmx1.active24.com2017-02-17 → 2019-12-25 · 5 obs

○ 2016-03-03 12:59:26
● 2017-02-17 13:38:48
● 2019-12-25 09:24:56
○ 2026-05-11 04:25:00
○ 2026-06-16 01:44:18

○MXmx2.active24.com2017-02-17 → 2019-12-25 · 5 obs

○ 2016-03-03 12:59:26
● 2017-02-17 13:38:48
● 2019-12-25 09:24:56
○ 2026-05-11 04:25:00
○ 2026-06-16 01:44:18

●A2a00:4b40:aaaa:2011::52026-05-11 → 2026-06-16 · 3 obs

○ 2019-12-25 09:24:56
● 2026-05-11 04:25:00
● 2026-06-16 01:44:18

○A2a02:4a8:ac24:108::96:1482015-07-26 → 2019-12-25 · 4 obs

● 2015-07-26 11:41:50
● 2019-12-25 09:24:56
○ 2026-05-11 04:25:00
○ 2026-06-16 01:44:18

●A37.9.175.2122026-05-11 → 2026-06-16 · 3 obs

○ 2019-12-25 09:24:56
● 2026-05-11 04:25:00
● 2026-06-16 01:44:18

○A81.95.96.1482015-07-26 → 2019-12-25 · 4 obs

● 2015-07-26 11:41:50
● 2019-12-25 09:24:56
○ 2026-05-11 04:25:00
○ 2026-06-16 01:44:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
eu	be.dns.eu, x.dns.eu, y.dns.eu, w.dns.eu...	-
polytechna.eu	ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu	-

✅ Authoritative Response

Server:45.10.97.11

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: 1558ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`37.9.175.212`
AAAA	1	`2a00:4b40:aaaa:2011::5`
NS	3	`ns1.websupport.cz, ns2.websupport.cz...`
MX	2	`mailin1.polytechna.eu (pri: 10), mailin2.polytechna.eu (pri: 100)`
TXT	1	`MS=BF92BE0D50E2B6700BA53BBB76BC1D527B2F5`
SOA	1	`ns1.websupport.cz admin.websupport.cz`

Analysis

Hierarchy

The domain polytechna.eu is parent to mailin2.polytechna.eu, www.polytechna.eu and mailin1.polytechna.eu.

IP Addresses

polytechna.eu has two IP addresses: 37.9.175.212 and 2a00:4b40:aaaa:2011::5

Additional host names — remedium.cz, acmetalinox.sk, limby.cz and two others — share IP numbers with polytechna.eu.

Name Servers

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

At least some of polytechna.eu's name servers are shared with other domains, for example sage.cz, spanielova1254-1260.info, infoappin.com and two more.

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

polytechna.eu has two mail servers: mailin1.polytechna.eu and mailin2.polytechna.eu.

Each of the two host names carries two IP addresses: mailin1.polytechna.eu points to 45.13.137.103 and 2a00:4b40:aaaa:2101:45:13:137:105, and mailin2.polytechna.eu points to 45.13.137.111 and 2a00:4b40:aaaa:2101:45:13:137:103.