`srf.cz`

DNSSEC	⚠️ Not signed
NS	`gamma1.rdrhost.com` ⚠️ Not in zone NS records
		A	78.141.239.248^{🇬🇧 AS-VULTR78.141.224.0/19 Vultr Assigned Prefix}
			PTR	`78.141.239.248.vultrusercontent.com`
NS	`gamma2.rdrhost.com` ⚠️ Not in zone NS records
		A	45.77.230.88^{🇬🇧 AS-VULTR45.77.224.0/21 Vultr Assigned Prefix}
			PTR	`45.77.230.88.vultrusercontent.com`

`cz`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.ns.nic.cz` ⭐
	NS	`b.ns.nic.cz`
	NS	`c.ns.nic.cz`
	NS	`d.ns.nic.cz`
	SOA	`a.ns.nic.cz`hostmaster@nic.cz serial=1784927841

Subdomains

www.srf.cz

Same first word

srf.me

srf.gov.al

srf.no

srf.ir

srf.info

srf.email

srf.sk

srf.com.au

srf.ch

srf.nyc

srf.kz

srf.com.mx

srf.se

srf.au

srf.eu

srf.de

srf.life

srf.im

srf.or.jp

srf.co.jp

srf.xyz

srf.be

srf.org

srf.network

srf.lt

srf.company

srf.co.nz

srf.com.tr

srf.tokyo

srf.tv

srf.gov.jo

srf.cc

srf.ac.uk

srf.sg

srf.es

srf.dk

srf.net

srf.us

srf.fi

srf.com.sa

srf.law

srf.com

srf.pl

srf.cn

srf.ae

srf.cz

srf.co.kr

srf.ru

srf.at

srf.nu

srf.it

srf.nl

srf.fr

srf.myds.me

Similar names

sfr.fr

rfs.com.tr

sfr.net

rfs.me

frs.com

sfr.info

rfs.ro

rfs.gov.kz

frs.ir

rfs.cz

frs.world

sfr.pro

sfr.ma

frs.dk

rfs.cn

fsr.co.za

rsf.properties

rsf.rentals

sfr.tel

rsf.be

sfr.business

frs.nl

fsr.fi

rsf.or.jp

frs.cz

fsr.co.id

rfs.nu

fsr.eu

frs.gov.tw

frs.net.au

frs.edu.br

fsr.fail

fsr.com

frs.solutions

sfr.fi

rfs.co

sfr.vn

rsf.ro

frs.gr

sfr.re

frs.it

rsf.co.uk

rsf.at

rfs.agency

sfr.li

rsf.it

sfr.ca

frs.eu

rfs.fr

frs.co.uk

frs.company

fsr.us

sfr.ie

rfs.jp

rsf.org

sfr.co.za

frs.de

fsr.org

frs.co.in

rfs.pt

fsr.co

sfr.co

fsr.org.pl

rsf.is

rsf.fo

fsr.sk

rfs.at

rfs.co.th

sfr.cl

rfs.edu.ps

rsf.us

fsr.de

frs.academy

sfr.com.au

fsr.ca

fsr.ac.ma

frs.jp

rfs.de

sfr.com.tr

fsr.info

rsf.de

rfs.gr

rsf.ch

rsf.fr

fsr.com.ru

rsf.es

rfs.nl

sfr.gr

rfs.com.au

frs.international

sfr.red

rfs.co.jp

fsr.at

frs.info

sfr.se

fsr.net

fsr.saarland

sfr.gov.ru

rsf.dk

rfs.lt

fsr.co.ir

sfr.dk

rfs.se

rsf.cl

fsr.pl

frs.email

rsf.pl

fsr.com.tw

fsr.cz

sfr.live

frs.com.au

sfr.gp

frs.ie

sfr.no

sfr.holdings

frs.be

rfs.sk

fsr.jp

sfr.sk

DNS History

24 records (2 active, 22 former)

○NSa.ns.gohost.cz2020-10-04 → 2021-04-24 · 5 obs

○ 2017-07-22 15:44:18
● 2020-10-04 02:23:24
● 2021-04-24 20:19:02
○ 2026-07-21 19:21:50
○ 2026-07-24 22:24:04

○NSb.ns.gohost.cz2020-10-04 → 2021-04-24 · 5 obs

○ 2017-07-22 15:44:18
● 2020-10-04 02:23:24
● 2021-04-24 20:19:02
○ 2026-07-21 19:21:50
○ 2026-07-24 22:24:04

●NSgamma1.rdrhost.com2026-07-21 → 2026-07-24 · 3 obs

○ 2021-04-24 20:19:02
● 2026-07-21 19:21:50
● 2026-07-24 22:24:04

●NSgamma2.rdrhost.com2026-07-21 → 2026-07-24 · 3 obs

○ 2021-04-24 20:19:02
● 2026-07-21 19:21:50
● 2026-07-24 22:24:04

○NSns.parktons.com2026-07-21 → 2026-07-21 · 3 obs

○ 2021-04-24 20:19:02
● 2026-07-21 19:21:50
○ 2026-07-24 22:24:04

○NSns.wedos.com2016-01-02 → 2017-07-22 · 5 obs

○ 2015-11-01 10:47:46
● 2016-01-02 23:07:18
● 2017-07-22 15:44:18
○ 2020-10-04 02:23:24
○ 2026-07-24 22:24:04

○NSns.wedos.cz2016-01-02 → 2017-07-22 · 5 obs

○ 2015-11-01 10:47:46
● 2016-01-02 23:07:18
● 2017-07-22 15:44:18
○ 2020-10-04 02:23:24
○ 2026-07-24 22:24:04

○NSns.wedos.eu2016-01-02 → 2017-07-22 · 5 obs

○ 2015-11-01 10:47:46
● 2016-01-02 23:07:18
● 2017-07-22 15:44:18
○ 2020-10-04 02:23:24
○ 2026-07-24 22:24:04

○NSns.wedos.net2016-01-02 → 2017-07-22 · 5 obs

○ 2015-11-01 10:47:46
● 2016-01-02 23:07:18
● 2017-07-22 15:44:18
○ 2020-10-04 02:23:24
○ 2026-07-24 22:24:04

○NSns1.hostinger.cz2015-08-22 → 2015-11-01 · 4 obs

● 2015-08-22 02:13:28
● 2015-11-01 10:47:46
○ 2016-01-02 23:07:18
○ 2026-07-24 22:24:04

○NSns2.hostinger.cz2015-08-22 → 2015-11-01 · 4 obs

● 2015-08-22 02:13:28
● 2015-11-01 10:47:46
○ 2016-01-02 23:07:18
○ 2026-07-24 22:24:04

○NSns3.hostinger.cz2015-08-22 → 2015-11-01 · 4 obs

● 2015-08-22 02:13:28
● 2015-11-01 10:47:46
○ 2016-01-02 23:07:18
○ 2026-07-24 22:24:04

○NSns4.hostinger.cz2015-08-22 → 2015-11-01 · 4 obs

● 2015-08-22 02:13:28
● 2015-11-01 10:47:46
○ 2016-01-02 23:07:18
○ 2026-07-24 22:24:04

○MXmail.gohost.cz2020-10-04 → 2021-04-24 · 5 obs

○ 2017-07-22 15:44:18
● 2020-10-04 02:23:24
● 2021-04-24 20:19:02
○ 2026-07-21 19:21:50
○ 2026-07-24 22:24:04

○MXmail.parktons.com2026-07-21 → 2026-07-21 · 3 obs

○ 2021-04-24 20:19:02
● 2026-07-21 19:21:50
○ 2026-07-24 22:24:04

○MXmx1.hostinger.cz2015-08-22 → 2015-11-01 · 4 obs

● 2015-08-22 02:13:28
● 2015-11-01 10:47:46
○ 2016-01-02 23:07:18
○ 2026-07-24 22:24:04

○MXwes1-mx1.wedos.net2016-01-02 → 2017-07-22 · 5 obs

○ 2015-11-01 10:47:46
● 2016-01-02 23:07:18
● 2017-07-22 15:44:18
○ 2020-10-04 02:23:24
○ 2026-07-24 22:24:04

○MXwes1-mx2.wedos.net2016-01-02 → 2017-07-22 · 5 obs

○ 2015-11-01 10:47:46
● 2016-01-02 23:07:18
● 2017-07-22 15:44:18
○ 2020-10-04 02:23:24
○ 2026-07-24 22:24:04

○A185.28.20.1602015-08-22 → 2015-11-01 · 4 obs

● 2015-08-22 02:13:28
● 2015-11-01 10:47:46
○ 2016-01-02 23:07:18
○ 2026-07-24 22:24:04

○A2001:41d0:302:2100::5ca62020-10-04 → 2021-04-24 · 5 obs

○ 2017-07-22 15:44:18
● 2020-10-04 02:23:24
● 2021-04-24 20:19:02
○ 2026-07-21 19:21:50
○ 2026-07-24 22:24:04

○A2a02:2b88:1:4::462016-01-02 → 2017-07-22 · 5 obs

○ 2015-11-01 10:47:46
● 2016-01-02 23:07:18
● 2017-07-22 15:44:18
○ 2020-10-04 02:23:24
○ 2026-07-24 22:24:04

○A46.28.105.922016-01-02 → 2017-07-22 · 5 obs

○ 2015-11-01 10:47:46
● 2016-01-02 23:07:18
● 2017-07-22 15:44:18
○ 2020-10-04 02:23:24
○ 2026-07-24 22:24:04

○A78.141.239.2482026-07-21 → 2026-07-21 · 3 obs

○ 2021-04-24 20:19:02
● 2026-07-21 19:21:50
○ 2026-07-24 22:24:04

○A79.137.34.1032020-10-04 → 2021-04-24 · 5 obs

○ 2017-07-22 15:44:18
● 2020-10-04 02:23:24
● 2021-04-24 20:19:02
○ 2026-07-21 19:21:50
○ 2026-07-24 22:24:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	c.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz	-
srf.cz	gamma1.rdrhost.com, gamma2.rdrhost.com	-

✅ Authoritative Response

Server:78.141.239.248

NS records: gamma1.rdrhost.com, gamma2.rdrhost.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for srf.cz (unsigned zone)

⏱️ Timing

Total: 842ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`78.141.239.248`
NS	2	`gamma1.rdrhost.com, gamma2.rdrhost.com`
MX	1	`mail.parktons.com (pri: 10)`
SOA	1	`ns.parktons.com root.parktons.com`

Analysis

Hierarchy

srf.cz is a parent domain of www.srf.cz.

Name Servers

srf.cz uses two name servers for its delegation: gamma1.rdrhost.com and gamma2.rdrhost.com.

srf.cz shares its name server setup with other domains, including investacademy.cz, boj.cz, vykupbytu.cz and two others.

srf.cz shares at least some of its name servers with other domains, including mx10.shopino.cz, kinopraha.cz, zlatyretrivr.cz and two others.

These name servers are frequently seen alongside the name servers ns.parktons.com.

gamma1.rdrhost.com and gamma2.rdrhost.com each resolve to one IP number: gamma1.rdrhost.com points to 78.141.239.248 and gamma2.rdrhost.com points to 45.77.230.88.

srf.cz - robtex.com

srf.cz

cz

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

Name Servers

`srf.cz`

`cz`