`sfcopava.com`

DNSSEC	⚠️ Not signed
A	81.91.85.211^{🇨🇿 WEB4U81.91.80.0/21}
		PTR	`m137.server4u.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	`mail.sfcopava.com` ⭐
		A	81.91.85.211^{🇨🇿 WEB4U81.91.80.0/21}
			PTR	`m137.server4u.cz`
SOA	`ns.web4u.cz`admin@web4u.cz 2020-10-11 #1

`com`

	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=1776012537

WOT: SAFE (61/100)

Subdomains

mail.sfcopava.com

Same first word

sfcopava.com

DNS History

6 records (4 active, 2 former)

●NSns.web4u.cz2026-02-18 → 2026-04-12 · 3 obs

○ 2017-03-22 11:39:58
● 2026-02-18 03:58:38
● 2026-04-12 16:51:24

○NSns1.ignum.com2015-08-14 → 2017-03-22 · 4 obs

● 2015-08-14 02:44:48
● 2017-03-22 11:39:58
○ 2026-02-18 03:58:38
○ 2026-04-12 16:51:24

○NSns2.ignum.cz2015-08-14 → 2017-03-22 · 4 obs

● 2015-08-14 02:44:48
● 2017-03-22 11:39:58
○ 2026-02-18 03:58:38
○ 2026-04-12 16:51:24

●NSns2.web4u.cz2026-02-18 → 2026-04-12 · 3 obs

○ 2017-03-22 11:39:58
● 2026-02-18 03:58:38
● 2026-04-12 16:51:24

●MXmail.sfcopava.com2015-08-14 → 2026-04-12 · 2 obs

● 2015-08-14 02:44:48
● 2026-04-12 16:51:24

●A81.91.85.2112015-08-14 → 2026-04-12 · 2 obs

● 2015-08-14 02:44:48
● 2026-04-12 16:51:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, f.gtld-servers.net, c.gtld-servers.net, h.gtld-servers.net...	-
sfcopava.com	ns.web4u.cz, ns2.web4u.cz	-

✅ Authoritative Response

Server:185.14.224.241

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sfcopava.com (unsigned zone)

⏱️ Timing

Total: 813ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.91.85.211`
NS	2	`ns.web4u.cz, ns2.web4u.cz`
MX	1	`mail.sfcopava.com (pri: 10)`
SOA	1	`ns.web4u.cz admin.web4u.cz`

Analysis

Hierarchy

sfcopava.com is the parent of mail.sfcopava.com.

IP Addresses

sfcopava.com resolves to one IP number: 81.91.85.211.

other host names including pop3.pivorohan.cz, olas.cz, krasnaprace.cz, mail.cedarcervenka.cz and mail.happysnack.cz share IP numbers with sfcopava.com.

Name Servers

sfcopava.com is delegated to two name servers ns2.web4u.cz and ns.web4u.cz.

sfcopava.com shares the same name server setup as other domains, for instance rmplus.org, aiteq.cz, dominion-nails.com, dirshop.cz and nejlevnejsi-fasady.cz.

Host names with two IP numbers:

The host name ns2.web4u.cz points to 2a02:a40:100:28ff::12 and 85.207.53.12; the host name ns.web4u.cz points to 2001:1568:fd::241 and 185.14.224.241.

Mail Servers

sfcopava.com is handled by a single mail server, mail.sfcopava.com.

mail.sfcopava.com resolves to IP 81.91.85.211.

sfcopava.com - robtex.com

sfcopava.com

com