`know.sk`

DNSSEC	🔒 Signed (DS record present)
A	62.109.151.80^{🇨🇿 IGNUM-AS62.109.128.0/19 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/}
		PTR	`redir-proxy2.webglobe.com`
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	`email.webglobe.cz` ⭐
		A	2001:1ab0:7e1f:1::1:5^{🇨🇿 IGNUM-AS2001:1ab0::/32 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/}
			PTR	`email.webglobe.cz`
		A	130.193.14.154^{🇨🇿 IGNUM-AS130.193.8.0/21 Webglobe s.r.o. H90}
			PTR	`email.webglobe.cz`
MX	`email2.webglobe.cz` ⭐
		A	130.193.14.154^{🇨🇿 IGNUM-AS130.193.8.0/21 Webglobe s.r.o. H90}
			PTR	`email.webglobe.cz`
MX	`email3.webglobe.cz` ⭐
		A	2001:880:0:15::2b1^{🇩🇪 ONE-NETWORK2001:880::/32}
			PTR	`email3.webglobe.cz`
		A	185.102.21.80^{🇨🇿 ONE-NETWORK185.102.21.0/24}
			PTR	`email3.webglobe.cz`
MX	`email4.webglobe.cz` ⭐
		A	185.102.21.80^{🇨🇿 ONE-NETWORK185.102.21.0/24}
			PTR	`email3.webglobe.cz`
SOA	`ns1.websupport.cz`admin@websupport.cz serial=1764777241

`sk`

	DNSSEC	🔒 Signed (DS record present)
	NS	`m.tld.sk` ⭐ 🔒
	NS	`a.tld.sk` ⚠️ Not in zone NS records 🔒
	NS	`b.tld.sk` ⚠️ Not in zone NS records 🔒
	NS	`c.tld.sk` ⚠️ Not in zone NS records 🔒
	NS	`e.tld.sk` 🔒
	NS	`f.tld.sk` 🔒
	NS	`g.tld.sk` 🔒
	NS	`h.tld.sk` 🔒
	SOA	`m.tld.sk`hostmaster@sk-nic.sk serial=2018452342

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DNS History

14 records (8 active, 6 former)

●NSns1.websupport.cz2026-03-12 → 2026-03-12 · 2 obs

○ 2015-12-31 09:13:24
● 2026-03-12 16:42:00

○NSns1.websupport.sk2015-10-17 → 2015-10-17 · 3 obs

● 2015-10-17 20:47:04
○ 2015-12-31 09:13:24
○ 2026-03-12 16:42:00

●NSns2.websupport.cz2026-03-12 → 2026-03-12 · 2 obs

○ 2015-12-31 09:13:24
● 2026-03-12 16:42:00

○NSns2.websupport.sk2015-10-17 → 2015-10-17 · 3 obs

● 2015-10-17 20:47:04
○ 2015-12-31 09:13:24
○ 2026-03-12 16:42:00

●NSns3.websupport.eu2026-03-12 → 2026-03-12 · 2 obs

○ 2015-12-31 09:13:24
● 2026-03-12 16:42:00

○NSns3.websupport.sk2015-10-17 → 2015-10-17 · 3 obs

● 2015-10-17 20:47:04
○ 2015-12-31 09:13:24
○ 2026-03-12 16:42:00

●MXemail.webglobe.cz2026-03-12 → 2026-03-12 · 2 obs

○ 2015-12-31 09:13:24
● 2026-03-12 16:42:00

●MXemail2.webglobe.cz2026-03-12 → 2026-03-12 · 2 obs

○ 2015-12-31 09:13:24
● 2026-03-12 16:42:00

●MXemail3.webglobe.cz2026-03-12 → 2026-03-12 · 2 obs

○ 2015-12-31 09:13:24
● 2026-03-12 16:42:00

●MXemail4.webglobe.cz2026-03-12 → 2026-03-12 · 2 obs

○ 2015-12-31 09:13:24
● 2026-03-12 16:42:00

○MXmailin1.know.sk2015-10-17 → 2015-10-17 · 3 obs

● 2015-10-17 20:47:04
○ 2015-12-31 09:13:24
○ 2026-03-12 16:42:00

○MXmailin2.know.sk2015-10-17 → 2015-10-17 · 3 obs

● 2015-10-17 20:47:04
○ 2015-12-31 09:13:24
○ 2026-03-12 16:42:00

○A37.9.175.62015-10-17 → 2015-10-17 · 3 obs

● 2015-10-17 20:47:04
○ 2015-12-31 09:13:24
○ 2026-03-12 16:42:00

●A62.109.151.802026-03-12 → 2026-03-12 · 2 obs

○ 2015-12-31 09:13:24
● 2026-03-12 16:42:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
sk	a.tld.sk, b.tld.sk, c.tld.sk, e.tld.sk...	14 records
know.sk	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: 1141ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`62.109.151.80`
NS	3	`ns1.websupport.cz, ns2.websupport.cz...`
MX	4	`email.webglobe.cz (pri: 10), email2.webglobe.cz (pri: 10)...`
SOA	1	`ns1.websupport.cz admin.websupport.cz`

📌 Glue Records Collected

Total: 14

In-bailiwick: 14 (a.tld.sk, b.tld.sk, c.tld.sk...)

Analysis

IP Addresses

know.sk resolves to a single IP address: 62.109.151.80.

Other host names including (0x736578)buddies.tv, baad.cz, biznispozicka.sk, asiservices.eu and praktimed.com share IP numbers with know.sk.

Name Servers

know.sk is delegated to three name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.

know.sk at least partially shares name servers with other domains, including fraenkel.cz, atil.cz, plus4u.eu, kilian.cz and e-storage.cz.

Host names with two IP numbers:

ns1.websupport.cz points to: 2a10:bbc0::11 and 45.10.97.11

ns2.websupport.cz points to: 2a02:250:3::12 and 185.71.159.12

ns3.websupport.eu points to: 2a10:bbc0::13 and 45.10.97.13

Mail Servers

know.sk is served by four mail servers: email2.webglobe.cz, email3.webglobe.cz, email4.webglobe.cz and email.webglobe.cz.

The mail servers for know.sk are shared with other domains, for instance mma-brno.cz, sojkova.org, hroznovevino.cz, hobi.cz and docile.cz.