`astrasecurity.eu`

DNSSEC	🔒 Signed (DS record present)
A	81.91.86.10^{🇨🇿 WEB4U81.91.80.0/21}
		PTR	`php4.web4u.cz`
NS	`ns2.web4u.cz` ⭐
		A	2a02:a40:100:28ff::12^{🇨🇿 BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s.}
			PTR	`ns2.web4u.cz`
		A	85.207.53.12^{🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block}
			PTR	`ns2.web4u.cz`
NS	`ns.web4u.cz`
		A	2001:1568:fd::241^{🇨🇿 WEB4U2001:1568::/33}
			PTR	`ns.web4u.cz`
		A	185.14.224.241^{🇨🇿 WEB4U185.14.224.0/23}
			PTR	`ns.web4u.cz`
MX	`mx.web4u.cz` ⭐
		A	2001:1568::7012^{🇨🇿 WEB4U2001:1568::/33}
			PTR	`mx.web4u.cz`
		A	81.91.87.12^{🇨🇿 WEB4U81.91.80.0/21}
			PTR	`mx.web4u.cz`
SOA	`ns.web4u.cz`admin@web4u.cz 2006-04-11 #71

`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=1126566456

Subdomains

mail.astrasecurity.eu

Same first word

astrasecurity.eu

astrasecurity.ro

astrasecurity.net

astrasecurity.co.uk

astrasecurity.com

Similar names

securityastar.xyz

astarsecurity.ca

securityastra.com

DNS History

5 records (4 active, 1 former)

●NSns.web4u.cz2015-06-13 → 2026-07-29 · 2 obs

● 2015-06-13 05:03:44
● 2026-07-29 10:04:52

●NSns2.web4u.cz2015-06-13 → 2026-07-29 · 2 obs

● 2015-06-13 05:03:44
● 2026-07-29 10:04:52

○MXmail.astrasecurity.eu2015-06-13 → 2017-08-16 · 4 obs

● 2015-06-13 05:03:44
● 2017-08-16 15:23:04
○ 2026-02-26 20:18:12
○ 2026-07-29 10:04:52

●MXmx.web4u.cz2026-02-26 → 2026-07-29 · 3 obs

○ 2017-08-16 15:23:04
● 2026-02-26 20:18:12
● 2026-07-29 10:04:52

●A81.91.86.102015-06-13 → 2026-07-29 · 2 obs

● 2015-06-13 05:03:44
● 2026-07-29 10:04:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
eu	x.dns.eu, si.dns.eu, y.dns.eu, w.dns.eu...	-
astrasecurity.eu	ns2.web4u.cz, ns.web4u.cz	-

✅ Authoritative Response

Server:85.207.53.12

NS records: ns2.web4u.cz, ns.web4u.cz

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1409ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.91.86.10`
NS	2	`ns.web4u.cz, ns2.web4u.cz`
MX	1	`mx.web4u.cz (pri: 10)`
SOA	1	`ns.web4u.cz admin.web4u.cz`

Analysis

Hierarchy

mail.astrasecurity.eu is delegated beneath astrasecurity.eu.

IP Addresses

astrasecurity.eu resolves to just one IP address, 81.91.86.10.

Two other host names, along with pudupudu.net, siringa.cz and vostrak.cz, also share IP numbers with astrasecurity.eu.

Name Servers

astrasecurity.eu is served by two delegated name servers, ns2.web4u.cz and ns.web4u.cz.

astrasecurity.eu shares its NS records with other domains, for example beautyplan.cz, ipcleaning.cz, blachere-illumination.cz and two others.

Each of the two host names carries two IP addresses: ns2.web4u.cz points to 85.207.53.12 and 2a02:a40:100:28ff::12, and ns.web4u.cz points to 185.14.224.241 and 2001:1568:fd::241.

Mail Servers

The sole mail server for astrasecurity.eu is mx.web4u.cz.

Among the domains sharing a mail server setup with astrasecurity.eu are smoger.cz, cesky-nabytek.cz, matrixfitness.cz and two others.

Some mail servers of astrasecurity.eu are also used by other domains, notably c42.cz and creditcheck.cz.

These mail servers often co-occur with the mail servers mail.c42.cz.

mx.web4u.cz carries two IP numbers: 81.91.87.12 and 2001:1568::7012.

astrasecurity.eu - robtex.com