`roubicek.net`

DNSSEC	🔒 Signed (DS record present)
A	31.41.203.73^{🇨🇿 Dragon31.41.200.0/21}
		PTR	`www.renegis.cz`
NS	`bristol.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:262f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c22f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bristol.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:222f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bristol.ns.cloudflare.com`
		A	108.162.194.47^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
		A	162.159.38.47^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
		A	172.64.34.47^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
NS	`tom.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b93^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c193^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tom.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2193^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tom.ns.cloudflare.com`
		A	108.162.193.147^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
		A	172.64.33.147^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
		A	173.245.59.147^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
MX	`1f0e941e64f74b3a.mx2.emailprofi.seznam.cz` ⭐
		A	2a02:598:2::1146^{🇨🇿 SEZNAM-CZ2a02:598:2::/48}
			PTR	`wildcard.mx2.emailprofi.seznam.cz`
		A	77.75.77.146^{🇨🇿 SEZNAM-CZ77.75.76.0/23 SEZNAM - III}
			PTR	`wildcard.mx2.emailprofi.seznam.cz`
MX	`1f0e941e64f74b3a.mx1.emailprofi.seznam.cz`⁽²⁰⁾
		A	2a02:598:2::1056^{🇨🇿 SEZNAM-CZ2a02:598:2::/48}
			PTR	`wildcard.mx1.emailprofi.seznam.cz`
		A	77.75.77.56^{🇨🇿 SEZNAM-CZ77.75.76.0/23 SEZNAM - III}
			PTR	`wildcard.mx1.emailprofi.seznam.cz`
TXT	`v=spf1 include:spf.seznam.cz include:mail.renegis.cz ip4:95.85.214.78 ip4:185...`
SOA	`bristol.ns.cloudflare.com`dns@cloudflare.com serial=2409737446

`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=1785279377

Subdomains

www.roubicek.net

Same first word

roubicek.de

roubicek.name

roubicek.net

roubicek.com

roubicek.eu

Similar names

rkbuieco.com

brouckie.be

kubicore.com

kubicore.de

kerbouci.com

kubicore.ch

DNS History

17 records (5 active, 12 former)

●NSbristol.ns.cloudflare.com2026-03-07 → 2026-07-28 · 3 obs

○ 2017-06-05 17:02:40
● 2026-03-07 20:21:30
● 2026-07-28 23:21:12

○NSns.wedos.com2015-07-02 → 2017-06-05 · 4 obs

● 2015-07-02 05:36:56
● 2017-06-05 17:02:40
○ 2026-03-07 20:21:30
○ 2026-07-28 23:21:12

○NSns.wedos.cz2015-07-02 → 2017-06-05 · 4 obs

● 2015-07-02 05:36:56
● 2017-06-05 17:02:40
○ 2026-03-07 20:21:30
○ 2026-07-28 23:21:12

○NSns.wedos.eu2015-07-02 → 2017-06-05 · 4 obs

● 2015-07-02 05:36:56
● 2017-06-05 17:02:40
○ 2026-03-07 20:21:30
○ 2026-07-28 23:21:12

○NSns.wedos.net2015-07-02 → 2017-06-05 · 4 obs

● 2015-07-02 05:36:56
● 2017-06-05 17:02:40
○ 2026-03-07 20:21:30
○ 2026-07-28 23:21:12

●NStom.ns.cloudflare.com2026-03-07 → 2026-07-28 · 3 obs

○ 2017-06-05 17:02:40
● 2026-03-07 20:21:30
● 2026-07-28 23:21:12

●MX1f0e941e64f74b3a.mx1.emailprofi.seznam.cz2026-03-07 → 2026-07-28 · 3 obs

○ 2017-06-05 17:02:40
● 2026-03-07 20:21:30
● 2026-07-28 23:21:12

●MX1f0e941e64f74b3a.mx2.emailprofi.seznam.cz2026-03-07 → 2026-07-28 · 3 obs

○ 2017-06-05 17:02:40
● 2026-03-07 20:21:30
● 2026-07-28 23:21:12

○MXalt1.aspmx.l.google.com2015-07-02 → 2017-06-05 · 4 obs

● 2015-07-02 05:36:56
● 2017-06-05 17:02:40
○ 2026-03-07 20:21:30
○ 2026-07-28 23:21:12

○MXalt2.aspmx.l.google.com2015-07-02 → 2017-06-05 · 4 obs

● 2015-07-02 05:36:56
● 2017-06-05 17:02:40
○ 2026-03-07 20:21:30
○ 2026-07-28 23:21:12

○MXaspmx.l.google.com2015-07-02 → 2017-06-05 · 4 obs

● 2015-07-02 05:36:56
● 2017-06-05 17:02:40
○ 2026-03-07 20:21:30
○ 2026-07-28 23:21:12

○MXaspmx2.googlemail.com2015-07-02 → 2017-06-05 · 4 obs

● 2015-07-02 05:36:56
● 2017-06-05 17:02:40
○ 2026-03-07 20:21:30
○ 2026-07-28 23:21:12

○MXaspmx3.googlemail.com2015-07-02 → 2017-06-05 · 4 obs

● 2015-07-02 05:36:56
● 2017-06-05 17:02:40
○ 2026-03-07 20:21:30
○ 2026-07-28 23:21:12

○MXaspmx4.googlemail.com2015-07-02 → 2017-06-05 · 4 obs

● 2015-07-02 05:36:56
● 2017-06-05 17:02:40
○ 2026-03-07 20:21:30
○ 2026-07-28 23:21:12

○MXaspmx5.googlemail.com2015-07-02 → 2017-06-05 · 4 obs

● 2015-07-02 05:36:56
● 2017-06-05 17:02:40
○ 2026-03-07 20:21:30
○ 2026-07-28 23:21:12

○A185.8.238.272015-07-02 → 2017-06-05 · 4 obs

● 2015-07-02 05:36:56
● 2017-06-05 17:02:40
○ 2026-03-07 20:21:30
○ 2026-07-28 23:21:12

●A31.41.203.732026-03-07 → 2026-07-28 · 3 obs

○ 2017-06-05 17:02:40
● 2026-03-07 20:21:30
● 2026-07-28 23:21:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, m.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net...	-
roubicek.net	tom.ns.cloudflare.com, bristol.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.38.47

NS records: tom.ns.cloudflare.com, bristol.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 330ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`31.41.203.73`
NS	2	`bristol.ns.cloudflare.com, tom.ns.cloudflare.com`
MX	2	`1f0e941e64f74b3a.mx2.emailprofi.seznam.c, 1f0e941e64f74b3a.mx1.emailprofi.seznam.c`
TXT	1	`v=spf1 include:spf.seznam.cz include:mai`
SOA	1	`bristol.ns.cloudflare.com dns.cloudflare`

Analysis

Hierarchy

www.roubicek.net is delegated beneath roubicek.net.

IP Addresses

roubicek.net has exactly one IP address — 31.41.203.73.

renegis.cz, www.renegis.cz, www.roubicek.net plus two other host names have IP numbers in common with roubicek.net.

Name Servers

roubicek.net uses two name servers for its delegation: bristol.ns.cloudflare.com and tom.ns.cloudflare.com.

The name server configuration of roubicek.net is shared with other domains, for instance lime-update.com, renegair.com, workdata.net and two others.

There is at least partial name server overlap between roubicek.net and other domains — brasilpromoativa.biz, ldda.cn, bandhubase.click and two more among them.

These name servers tend to appear in combination with the name servers kia.ns.cloudflare.com, edna.ns.cloudflare.com, hugh.ns.cloudflare.com and lewis.ns.cloudflare.com.

Hosts with 6 IP addresses each:

Hostname bristol.ns.cloudflare.com directs to 108.162.194.47, 162.159.38.47 and 172.64.34.47 along with 3 other IP addresses.

Hostname tom.ns.cloudflare.com directs to 108.162.193.147, 172.64.33.147 and 173.245.59.147 along with 3 other IP addresses.

Mail Servers

roubicek.net uses two mail servers, 1f0e941e64f74b3a.mx1.emailprofi.seznam.cz and 1f0e941e64f74b3a.mx2.emailprofi.seznam.cz.

The two host names 1f0e941e64f74b3a.mx1.emailprofi.seznam.cz and 1f0e941e64f74b3a.mx2.emailprofi.seznam.cz each have a pair of IP addresses: 1f0e941e64f74b3a.mx1.emailprofi.seznam.cz has 77.75.77.56 and 2a02:598:2::1056, and 1f0e941e64f74b3a.mx2.emailprofi.seznam.cz has 77.75.77.146 and 2a02:598:2::1146.

roubicek.net - robtex.com

roubicek.net

net

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`roubicek.net`

`net`