Our database now contains whois records of 640 Million (640,561,458) domain names.
Login / Password / Signup

Domain: PROUDBUSINESS.CZ (18 similar domains)
Registrar: REG-THINLINE
Query Time: 26 Sep 2025 - 1:51 PM UTC  [3 HRS BACK] [REFRESH]

Registered: 21st June 2020  [5 years, 3 months, 5 days back]
Updated: 16th April 2025  [5 months, 10 days back]
Expiry: 21st June 2026  [8 months, 24 days left]

NAME SERVERS

ns1.thinline.cz
ns2.thinline.cz
ns3.cesky-hosting.eu

REGISTRANT CONTACT

Name: Denys Sizov (2 domains)
Company: proud business s.r.o. (2 domains)
Address: Jaurisova 515/4, Praha, 14000
Country: Czech Republic (1.46 million domains from Czech Republic for $500)

ADMINISTRATIVE CONTACT

Name: Matej Kloubek (1,424 domains)
Company: THINline s.r.o. (22,079 domains)
Address: Jeseniova 1196/52, Praha 3, 13000
Country: Czech Republic (1.46 million domains from Czech Republic for $500)

TECHNICAL CONTACT

Name: Matej Kloubek (1,424 domains)
Company: THINline s.r.o. (22,079 domains)
Address: Jeseniova 1196/52, Praha 3, 13000, Jeseniova 1196/52, Praha 3, 13000
Country: Czech Republic (1.46 million domains from Czech Republic for $500)

SHARE THIS PAGE

Short URL: whoxy.com/proudbusiness.cz
Permalink: https://www.whoxy.com/proudbusiness.cz

Facebook Twitter Google+ LinkedIn Email

--------------------------------------------------
Generator: x1.autowhois.com
Registry WHOIS: whois.nic.cz
Query Time: Fri, 26 Sep 2025 13:51:03 +0000
--------------------------------------------------

%  (c) 2006-2021 CZ.NIC, z.s.p.o.
% 
% Intended use of supplied data and information
% 
% Data contained in the domain name register, as well as information
% supplied through public information services of CZ.NIC association,
% are appointed only for purposes connected with Internet network
% administration and operation, or for the purpose of legal or other
% similar proceedings, in process as regards a matter connected
% particularly with holding and using a concrete domain name.
% 
% Full text available at:
% http://www.nic.cz/page/306/intended-use-of-supplied-data-and-information/
% 
% See also a search service at http://www.nic.cz/whois/
% 
% 
% Whoisd Server Version: 3.15.0
% Timestamp: Fri Sep 26 15:51:04 2025

domain:       proudbusiness.cz
registrant:   THIN-C-857-1592739708
admin-c:      SB:HOSTINGLINE001
nsset:        NSS:HOSTINGLINE001:1
keyset:       CH-172235-1744791039
registrar:    REG-THINLINE
registered:   21.06.2020 13:41:49
changed:      16.04.2025 10:10:40
expire:       21.06.2026

contact:      THIN-C-857-1592739708
org:          proud business s.r.o.
name:         Denys Sizov
address:      Jaurisova 515/4
address:      Praha
address:      14000
address:      CZ
registrar:    REG-THINLINE
created:      21.06.2020 13:41:48

contact:      SB:HOSTINGLINE001
org:          THINline s.r.o.
name:         Matej Kloubek
address:      Jeseniova 1196/52
address:      Praha 3
address:      13000
address:      CZ
registrar:    REG-THINLINE
created:      11.07.2003 20:31:00
changed:      24.09.2018 10:48:03

nsset:        NSS:HOSTINGLINE001:1
nserver:      ns2.thinline.cz (82.100.6.2, 2001:4de8:fa22:0:1:5264:602:1)
nserver:      ns3.cesky-hosting.eu 
nserver:      ns1.thinline.cz (91.239.200.243, 2001:67c:e94:0:1:5bef:c8f3:1)
tech-c:       SB:HOSTINGLINE001
registrar:    REG-THINLINE
created:      01.10.2007 02:00:00
changed:      11.12.2024 13:51:31

keyset:       CH-172235-1744791039
dnskey:       257 3 13 FsB2vLDfSgO9vtJXIpSJKnTPHaDHgzxg+EbSx4rRTk6ufBlJVOpw+Qly/eUWU/4V5jv4Lqze+ozIe4GndxkuMg==
tech-c:       SB:HOSTINGLINE001
registrar:    REG-THINLINE
created:      16.04.2025 10:10:39
{
    "status": 1,
    "domain_name": "proudbusiness.cz",
    "query_time": "2025-09-26 13:51:03",
    "domain_registered": "yes",
    "create_date": "2020-06-21",
    "update_date": "2025-04-16",
    "expiry_date": "2026-06-21",
    "domain_registrar": {
        "registrar_name": "REG-THINLINE"
    },
    "registrant_contact": {
        "full_name": "Denys Sizov",
        "company_name": "proud business s.r.o.",
        "mailing_address": "Jaurisova 515/4, Praha, 14000",
        "country_name": "Czech Republic",
        "country_code": "CZ"
    },
    "administrative_contact": {
        "full_name": "Matej Kloubek",
        "company_name": "THINline s.r.o.",
        "mailing_address": "Jeseniova 1196/52, Praha 3, 13000",
        "country_name": "Czech Republic",
        "country_code": "CZ"
    },
    "technical_contact": {
        "full_name": "Matej Kloubek",
        "company_name": "THINline s.r.o.",
        "mailing_address": "Jeseniova 1196/52, Praha 3, 13000, Jeseniova 1196/52, Praha 3, 13000",
        "country_name": "Czech Republic",
        "country_code": "CZ"
    },
    "name_servers": [
        "ns1.thinline.cz",
        "ns2.thinline.cz",
        "ns3.cesky-hosting.eu"
    ],
    "raw_whois": "--------------------------------------------------\nGenerator: x1.autowhois.com\nRegistry WHOIS: whois.nic.cz\nQuery Time: Fri, 26 Sep 2025 13:51:03 +0000\n--------------------------------------------------\n\n%  (c) 2006-2021 CZ.NIC, z.s.p.o.\r\n% \r\n% Intended use of supplied data and information\r\n% \r\n% Data contained in the domain name register, as well as information\r\n% supplied through public information services of CZ.NIC association,\r\n% are appointed only for purposes connected with Internet network\r\n% administration and operation, or for the purpose of legal or other\r\n% similar proceedings, in process as regards a matter connected\r\n% particularly with holding and using a concrete domain name.\r\n% \r\n% Full text available at:\r\n% http://www.nic.cz/page/306/intended-use-of-supplied-data-and-information/\r\n% \r\n% See also a search service at http://www.nic.cz/whois/\r\n% \r\n% \r\n% Whoisd Server Version: 3.15.0\r\n% Timestamp: Fri Sep 26 15:51:04 2025\r\n\r\ndomain:       proudbusiness.cz\r\nregistrant:   THIN-C-857-1592739708\r\nadmin-c:      SB:HOSTINGLINE001\r\nnsset:        NSS:HOSTINGLINE001:1\r\nkeyset:       CH-172235-1744791039\r\nregistrar:    REG-THINLINE\r\nregistered:   21.06.2020 13:41:49\r\nchanged:      16.04.2025 10:10:40\r\nexpire:       21.06.2026\r\n\r\ncontact:      THIN-C-857-1592739708\r\norg:          proud business s.r.o.\r\nname:         Denys Sizov\r\naddress:      Jaurisova 515/4\r\naddress:      Praha\r\naddress:      14000\r\naddress:      CZ\r\nregistrar:    REG-THINLINE\r\ncreated:      21.06.2020 13:41:48\r\n\r\ncontact:      SB:HOSTINGLINE001\r\norg:          THINline s.r.o.\r\nname:         Matej Kloubek\r\naddress:      Jeseniova 1196/52\r\naddress:      Praha 3\r\naddress:      13000\r\naddress:      CZ\r\nregistrar:    REG-THINLINE\r\ncreated:      11.07.2003 20:31:00\r\nchanged:      24.09.2018 10:48:03\r\n\r\nnsset:        NSS:HOSTINGLINE001:1\r\nnserver:      ns2.thinline.cz (82.100.6.2, 2001:4de8:fa22:0:1:5264:602:1)\r\nnserver:      ns3.cesky-hosting.eu \r\nnserver:      ns1.thinline.cz (91.239.200.243, 2001:67c:e94:0:1:5bef:c8f3:1)\r\ntech-c:       SB:HOSTINGLINE001\r\nregistrar:    REG-THINLINE\r\ncreated:      01.10.2007 02:00:00\r\nchanged:      11.12.2024 13:51:31\r\n\r\nkeyset:       CH-172235-1744791039\r\ndnskey:       257 3 13 FsB2vLDfSgO9vtJXIpSJKnTPHaDHgzxg+EbSx4rRTk6ufBlJVOpw+Qly/eUWU/4V5jv4Lqze+ozIe4GndxkuMg==\r\ntech-c:       SB:HOSTINGLINE001\r\nregistrar:    REG-THINLINE\r\ncreated:      16.04.2025 10:10:39"
}
<?xml version="1.0" encoding="UTF-8"?>
<root>
 <status>1</status>
 <domain_name>proudbusiness.cz</domain_name>
 <query_time>2025-09-26 13:51:03</query_time>
 <domain_registered>yes</domain_registered>
 <create_date>2020-06-21</create_date>
 <update_date>2025-04-16</update_date>
 <expiry_date>2026-06-21</expiry_date>
 <domain_registrar>
  <registrar_name>REG-THINLINE</registrar_name>
 </domain_registrar>
 <registrant_contact>
  <full_name>Denys Sizov</full_name>
  <company_name>proud business s.r.o.</company_name>
  <mailing_address>Jaurisova 515/4, Praha, 14000</mailing_address>
  <country_name>Czech Republic</country_name>
  <country_code>CZ</country_code>
 </registrant_contact>
 <administrative_contact>
  <full_name>Matej Kloubek</full_name>
  <company_name>THINline s.r.o.</company_name>
  <mailing_address>Jeseniova 1196/52, Praha 3, 13000</mailing_address>
  <country_name>Czech Republic</country_name>
  <country_code>CZ</country_code>
 </administrative_contact>
 <technical_contact>
  <full_name>Matej Kloubek</full_name>
  <company_name>THINline s.r.o.</company_name>
  <mailing_address>Jeseniova 1196/52, Praha 3, 13000, Jeseniova 1196/52, Praha 3, 13000</mailing_address>
  <country_name>Czech Republic</country_name>
  <country_code>CZ</country_code>
 </technical_contact>
 <name_servers>
  <value>ns1.thinline.cz</value>
  <value>ns2.thinline.cz</value>
  <value>ns3.cesky-hosting.eu</value>
 </name_servers>
 <raw_whois>--------------------------------------------------
Generator: x1.autowhois.com
Registry WHOIS: whois.nic.cz
Query Time: Fri, 26 Sep 2025 13:51:03 +0000
--------------------------------------------------

%  (c) 2006-2021 CZ.NIC, z.s.p.o.&#13;
% &#13;
% Intended use of supplied data and information&#13;
% &#13;
% Data contained in the domain name register, as well as information&#13;
% supplied through public information services of CZ.NIC association,&#13;
% are appointed only for purposes connected with Internet network&#13;
% administration and operation, or for the purpose of legal or other&#13;
% similar proceedings, in process as regards a matter connected&#13;
% particularly with holding and using a concrete domain name.&#13;
% &#13;
% Full text available at:&#13;
% http://www.nic.cz/page/306/intended-use-of-supplied-data-and-information/&#13;
% &#13;
% See also a search service at http://www.nic.cz/whois/&#13;
% &#13;
% &#13;
% Whoisd Server Version: 3.15.0&#13;
% Timestamp: Fri Sep 26 15:51:04 2025&#13;
&#13;
domain:       proudbusiness.cz&#13;
registrant:   THIN-C-857-1592739708&#13;
admin-c:      SB:HOSTINGLINE001&#13;
nsset:        NSS:HOSTINGLINE001:1&#13;
keyset:       CH-172235-1744791039&#13;
registrar:    REG-THINLINE&#13;
registered:   21.06.2020 13:41:49&#13;
changed:      16.04.2025 10:10:40&#13;
expire:       21.06.2026&#13;
&#13;
contact:      THIN-C-857-1592739708&#13;
org:          proud business s.r.o.&#13;
name:         Denys Sizov&#13;
address:      Jaurisova 515/4&#13;
address:      Praha&#13;
address:      14000&#13;
address:      CZ&#13;
registrar:    REG-THINLINE&#13;
created:      21.06.2020 13:41:48&#13;
&#13;
contact:      SB:HOSTINGLINE001&#13;
org:          THINline s.r.o.&#13;
name:         Matej Kloubek&#13;
address:      Jeseniova 1196/52&#13;
address:      Praha 3&#13;
address:      13000&#13;
address:      CZ&#13;
registrar:    REG-THINLINE&#13;
created:      11.07.2003 20:31:00&#13;
changed:      24.09.2018 10:48:03&#13;
&#13;
nsset:        NSS:HOSTINGLINE001:1&#13;
nserver:      ns2.thinline.cz (82.100.6.2, 2001:4de8:fa22:0:1:5264:602:1)&#13;
nserver:      ns3.cesky-hosting.eu &#13;
nserver:      ns1.thinline.cz (91.239.200.243, 2001:67c:e94:0:1:5bef:c8f3:1)&#13;
tech-c:       SB:HOSTINGLINE001&#13;
registrar:    REG-THINLINE&#13;
created:      01.10.2007 02:00:00&#13;
changed:      11.12.2024 13:51:31&#13;
&#13;
keyset:       CH-172235-1744791039&#13;
dnskey:       257 3 13 FsB2vLDfSgO9vtJXIpSJKnTPHaDHgzxg+EbSx4rRTk6ufBlJVOpw+Qly/eUWU/4V5jv4Lqze+ozIe4GndxkuMg==&#13;
tech-c:       SB:HOSTINGLINE001&#13;
registrar:    REG-THINLINE&#13;
created:      16.04.2025 10:10:39</raw_whois>
</root>
SIMILAR DOMAINS

Currently there are 18 domain names similar to proudbusiness.cz in our database:

View all Similar Domain Names

REVERSE WHOIS

Matej Kloubek is linked with 1,424 domain names:

View all Related Domain Names

WHOIS HISTORY
  • 26 September 2025  [1 Whois Record]

View all Historical Whois Records

RECENT WHOIS LOOKUP

View all Recent Whois Lookups

Whois API Demo

Whois Lookup API

You can fetch the above results using our Whois Lookup API.

https://api.whoxy.com/?key=xxxxx&whois=proudbusiness.cz

Whois API digs into WHOIS registry referral chains until the correct WHOIS servers are found, for the most complete WHOIS data.
Our WHOIS parser converts WHOIS data into well-structured fields (XML & JSON), which can easily be read by your application.
Whois API supports a total of 2026 Domain Extensions (gTLDs, ccTLDs & new gTLDs), ensuring all domains are supported.

Sample Output: JSON Schema • XML Schema • JSON Live Results • XML Live Results

Whois Lookup Pricing Total API Calls Price CPM Purchase
1,000 Whois Lookup API Queries 1,000 $2 $2.00 Order Now
10,000 Whois Lookup API Queries 10,000 $20 $2.00 Order Now
50,000 Whois Lookup API Queries 50,000 $75 $1.50 Order Now
250,000 Whois Lookup API Queries 250,000 $300 $1.20 Order Now
1 Million Whois Lookup API Queries 1,000,000 $1,000 $1.00 Order Now
10 Million Whois Lookup API Queries 10,000,000 $5,000 $0.50 Order Now
25 Million Whois Lookup API Queries 25,000,000 $10,000 $0.40 Order Now

Who owned proudbusiness.cz in the past? (1 record)

26 SEP 2025

Name: Denys Sizov (2 domains)
Company: proud business s.r.o. (2 domains)
Country: Czech Republic (1.46 million domains from Czech Republic for $500)
Nameservers: ns1.thinline.cz, ns2.thinline.cz, ns3.cesky-hosting.eu

Whois History API returns all the historical WHOIS records of a domain name. For more details, please visit https://www.whoxy.com/whois-history/