`dedicated4u.net`

DNSSEC	⚠️ Not signed
A	81.31.45.146^{🇨🇿 MASTER-AS81.31.32.0/20 MASTER-NET-1}
		PTR	`81-31-45-146.static.masterinter.net`
NS	`ns1.master.cz` ⭐
		A	2a01:430:100:16::2^{🇨🇿 MASTER-AS2a01:430::/32 MASTER-IPV6-1-MAI-CZ}
			PTR	`ns1.master.cz`
		A	81.31.33.23^{🇨🇿 MASTER-AS81.31.32.0/20 MASTER-NET-1}
			PTR	`ns1.master.cz`
NS	`ns2.master.cz`
		A	2a01:430:200:b::2^{🇨🇿 MASTER-AS2a01:430::/32 MASTER-IPV6-1-MAI-CZ}
			PTR	`ns2.master.cz`
		A	81.31.33.6^{🇨🇿 MASTER-AS81.31.32.0/20 MASTER-NET-1}
			PTR	`ns2.master.cz`
SOA	`ns1.master.cz`dnsadmin@master.cz 2023-04-04 #2

`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=1771291465

Same first word

dedicated4u.cz

dedicated4u.com

dedicated4u.net

dedicated4u.nl

dedicated4u.eu

DNS History

4 records (3 active, 1 former)

●NSns1.master.cz2015-06-13 → 2026-03-24 · 2 obs

● 2015-06-13 18:41:02
● 2026-03-24 03:34:46

●NSns2.master.cz2015-06-13 → 2026-03-24 · 2 obs

● 2015-06-13 18:41:02
● 2026-03-24 03:34:46

○A81.31.33.202015-06-13 → 2017-04-10 · 4 obs

● 2015-06-13 18:41:02
● 2017-04-10 18:49:48
○ 2026-02-16 10:53:22
○ 2026-03-24 03:34:46

●A81.31.45.1462026-02-16 → 2026-03-24 · 3 obs

○ 2017-04-10 18:49:48
● 2026-02-16 10:53:22
● 2026-03-24 03:34:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	d.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net...	-
dedicated4u.net	ns1.master.cz, ns2.master.cz	-

✅ Authoritative Response

Server:81.31.33.23

NS records: ns1.master.cz, ns2.master.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dedicated4u.net (unsigned zone)

⏱️ Timing

Total: 755ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.31.45.146`
NS	2	`ns2.master.cz, ns1.master.cz`
SOA	1	`ns1.master.cz dnsadmin.master.cz`

Analysis

IP Addresses

dedicated4u.net points to a single IP number: 81.31.45.146.

Other host names, for instance 80-79-20-6.static.rebelhost.cz, www.cloud4data.sg, rackservers.cz, masterinternet.eu and masterdc.cz share IP numbers with dedicated4u.net.

Name Servers

Delegation for dedicated4u.net rests with two name servers, ns1.master.cz and ns2.master.cz.

dedicated4u.net shares the same name server setup as other domains, including masterdc.sk, dedicated4u.cz, rackspace.cz, cbix.cz and masterestate.eu.

dedicated4u.net at least partially shares name servers with other domains, for instance 150.62.149.in-addr.arpa, masterdc.com, 217.93.77.in-addr.arpa, 251.167.83.in-addr.arpa and 209.93.77.in-addr.arpa.

These name servers are commonly used with ns3.master.cz, ns1.westmaster.com, ns2.westmaster.com, ns1.cloud4data.com, ns2.cloud4data.com and ns3.cloud4data.com.

Host names with two IP numbers: ns1.master.cz points to 2a01:430:100:16::2 and 81.31.33.23; ns2.master.cz points to 2a01:430:200:b::2 and 81.31.33.6.

dedicated4u.net - robtex.com

dedicated4u.net

net