Verifying against the live site and live WHOIS/DNS…
Common questions
Is t-mobile.cz legit or a scam?
AboutUs doesn't label sites "legit" or "a scam": this page lists the dated registration, DNS, HTTPS, mail-authentication and safety checks we could verify, each with its source, so you can decide for yourself.
Who owns t-mobile.cz?
Nobody has completed AboutUs's owner verification for t-mobile.cz. That's true of most sites here — it isn't itself a warning sign.
Correct a description, link or other detail. Submissions are reviewed before publication.
Registered 2001 · site is live · HTTPS valid
T-Mobile Czech Republic provides mobile phone service and tariff plans to Czech customers. The site offers plan activation through its eShop, including promotional discounts on monthly fees.
Authority 75/100— ahead of 75% of the August 2026 scored sampleClear
Why this authority score
75 is a percentile: higher than 75% of sites we score.
How it's calculated
Prominence (Tranco rank #29,028)+8
Verified continuity: 25.7 years (RDAP registration)+11
Identity corroboration (capped)+4
Security & email hygiene+3
Calibration adjustment (published map)+12
Model score: 38/99 — what these reason lines add up to.
Published Authority (percentile): 75/100 — this site's rank against the August 2026 scored sample. Public Authority is capped at 99.
What t-mobile.cz said about itself, 2007
Quoted from the site's AboutUs wiki page in each year it changed (1 version). These are the page's own words at the time, not AboutUs's assessment. New words · dropped words
2007
Stačí kliknout a máte nový tarif o 20 % levnější! Aktivujte si právě teď tarif přes eShop a půl roku budete mít o 20 % nižší paušál. Být u T-Mobile se Vám vyplatí!
Site history
Dated record — historical facts always carry their date.
2001
Domain registered (Feb 15, 2001).
2007
First tracked by AboutUs (Apr 27, 2007); profile edited 2 times through 2013.
✓ domain continuity 25 years registered✓ live verified Oct 27, 2026
Safety evidence
No unexpired threat-feed result; name-similarity check available (recorded about 67 days ago); 3/3 transport and email checks available (oldest recorded about 67 days ago). This is evidence coverage, not a probability that a website is safe.
No caution flags in the available scoring observations; this is not a complete safety assessment
Lifeline · t-mobile.cz over time
Checked in the last 30 daysOlder, dated recordFrom registration records
On AboutUs since 2007 · 5 registrar changes since Jan 5, 2009 · 3 ownership changes since 2009 · last checked Oct 17, 2026.
Registration
No registration date on file yet. AboutUs reads it from RDAP when the site is checked.
AboutUs record
AboutUs wiki pageAboutUs wiki pageApr 27, 2007 – Nov 6, 2013An AboutUs wiki page described t-mobile.cz from Apr 27, 2007 to Nov 6, 2013 (2 edits).Source: AboutUs wiki archive, 2006–2023Said about itself in 2007Jul 1, 2007“Stačí kliknout a máte nový tarif o 20 % levnější! Aktivujte si právě teď tarif přes eShop a půl roku budete mít o 20 % nižší paušál. Být u T-Mobile se Vám vyplatí!”Source: AboutUs wiki archive, 2007
Registrar
REG-GENREGREG-GENREGJan 5, 2009 – Apr 26, 2014Registrar REG-GENREG in the WHOIS and RDAP records held for t-mobile.cz, from Jan 5, 2009 to Apr 26, 2014.Source: WHOIS / RDAP archive (who.is)REG-1APIJun 30, 2014 – Feb 3, 2015Registrar REG-1API in the WHOIS and RDAP records held for t-mobile.cz, from Jun 30, 2014 to Feb 3, 2015.
Ownership
Ownership recordsJan 5, 2009 – May 28, 2026Registration records for t-mobile.cz are held from Jan 5, 2009 to May 28, 2026 (184 records). 3 changes of registrant name or organization are marked. Privacy-service and redaction changes are not counted.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Zone file
Nameservers: nextra.cz, sloane.cz, t-mobile.czJan 5, 2009 – Nov 21, 2011Registration records listed nextra.cz, sloane.cz, t-mobile.cz nameservers (ns.t-mobile.cz, ns2.sloane.cz, sns.nextra.cz) for t-mobile.cz from Jan 5, 2009 to Nov 21, 2011.Source: From registration records (WHOIS / RDAP archive, who.is)
Certificate
Entrust LimitedApr 27, 2026 – Oct 27, 2026Entrust Limited issued 51 certificates for t-mobile.cz from Apr 27, 2026, the latest valid until May 7, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)Let's EncryptApr 29, 2026 – Oct 27, 2026
2010201520202025Apr ’26← last 12 months, drawn wider
Every dated fact on this lifeline (29)
Apr 27, 2007 – Nov 6, 2013AboutUs record: An AboutUs wiki page described t-mobile.cz from Apr 27, 2007 to Nov 6, 2013 (2 edits).Source: AboutUs wiki archive, 2006–2023
Jul 1, 2007AboutUs record: “Stačí kliknout a máte nový tarif o 20 % levnější! Aktivujte si právě teď tarif přes eShop a půl roku budete mít o 20 % nižší paušál. Být u T-Mobile se Vám vyplatí!”Source: AboutUs wiki archive, 2007
Jan 5, 2009 – Apr 26, 2014Registrar: Registrar REG-GENREG in the WHOIS and RDAP records held for t-mobile.cz, from Jan 5, 2009 to Apr 26, 2014.Source: WHOIS / RDAP archive (who.is)
Jan 5, 2009 – May 28, 2026Ownership: Registration records for t-mobile.cz are held from Jan 5, 2009 to May 28, 2026 (184 records). 3 changes of registrant name or organization are marked. Privacy-service and redaction changes are not counted.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Jan 5, 2009 – Nov 21, 2011Zone file: Registration records listed nextra.cz, sloane.cz, t-mobile.cz nameservers (ns.t-mobile.cz, ns2.sloane.cz, sns.nextra.cz) for t-mobile.cz from Jan 5, 2009 to Nov 21, 2011.Source: From registration records (WHOIS / RDAP archive, who.is)
Current AboutUs record
Jun 30, 2026 – Aug 21, 2026 (latest)
Authority and Safety last refreshed Aug 21, 2026.
Source: AboutUs checks
Source: WHOIS / RDAP archive (who.is)
REG-GENREGREG-GENREGMar 18, 2015 – Aug 24, 2019Registrar REG-GENREG in the WHOIS and RDAP records held for t-mobile.cz, from Mar 18, 2015 to Aug 24, 2019.Source: WHOIS / RDAP archive (who.is)
REG-INTERNET-CZDec 3, 2019 – Mar 30, 2021Registrar REG-INTERNET-CZ in the WHOIS and RDAP records held for t-mobile.cz, from Dec 3, 2019 to Mar 30, 2021.Source: WHOIS / RDAP archive (who.is)
REG-COREREG-COREJun 18, 2021 – May 28, 2026Registrar REG-CORE in the WHOIS and RDAP records held for t-mobile.cz, from Jun 18, 2021 to May 28, 2026.Source: WHOIS / RDAP archive (who.is)
COREHUB SL (Sociedad Unipersonal)Oct 17, 2026Registrar COREHUB SL (Sociedad Unipersonal) in the registration data recorded on Oct 17, 2026.Source: RDAP, fetched Jul 11, 2026
Ownership change
Jun 30, 2014
The registrant name or organization in the registration record changed; first recorded Jun 30, 2014. Who it changed to is in the full report.
Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Ownership changeMar 18, 2015The registrant name or organization in the registration record changed; first recorded Mar 18, 2015. Who it changed to is in the full report.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Ownership changeJun 18, 2021The registrant name or organization in the registration record changed; first recorded Jun 18, 2021. Who it changed to is in the full report.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
3 ownership changes, 2009–2026
Nameservers: nextra.cz, t-mobile.cz
Jan 3, 2012 – Apr 26, 2014
Registration records listed nextra.cz, t-mobile.cz nameservers (ns.t-mobile.cz, nss.t-mobile.cz, sns.nextra.cz) for t-mobile.cz from Jan 3, 2012 to Apr 26, 2014.
Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to nextra.cz, t-mobile.czJan 3, 2012t-mobile.cz's nameservers moved from nextra.cz, sloane.cz, t-mobile.cz to nextra.cz, t-mobile.cz between Nov 21, 2011 and Jan 3, 2012. Last seen at nextra.cz, sloane.cz, t-mobile.cz: Nov 21, 2011 (registration record). First seen at nextra.cz, t-mobile.cz: Jan 3, 2012 (registration record).Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Nameservers: t-mobile.czNameservers: t-mobile.czJun 30, 2014 – Feb 17, 2022Registration records listed t-mobile.cz nameservers (freya.t-mobile.cz, idunn.t-mobile.cz) for t-mobile.cz from Jun 30, 2014 to Feb 17, 2022.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to t-mobile.czJun 30, 2014t-mobile.cz's nameservers moved from nextra.cz, t-mobile.cz to t-mobile.cz at some point between Apr 26, 2014 and Jun 30, 2014. Last seen at nextra.cz, t-mobile.cz: Apr 26, 2014 (registration record). First seen at t-mobile.cz: Jun 30, 2014 (registration record). AboutUs holds no nameserver records for the 2 months in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Nameservers: t-mobile.cz, telekom.skMay 17, 2022 – May 20, 2024Registration records listed t-mobile.cz, telekom.sk nameservers (eira.t-mobile.cz, eisa.telekom.sk, freya.t-mobile.cz…) for t-mobile.cz from May 17, 2022 to May 20, 2024.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to t-mobile.cz, telekom.skMay 17, 2022t-mobile.cz's nameservers moved from t-mobile.cz to t-mobile.cz, telekom.sk at some point between Feb 17, 2022 and May 17, 2022. Last seen at t-mobile.cz: Feb 17, 2022 (registration record). First seen at t-mobile.cz, telekom.sk: May 17, 2022 (registration record). AboutUs holds no nameserver records for the 3 months in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Nameservers: nic.czNameservers: nic.czJun 23, 2024 – May 28, 2026Registration records listed nic.cz nameservers (tmobile1.ns.nic.cz, tmobile2.ns.nic.cz) for t-mobile.cz from Jun 23, 2024 to May 28, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
DNS moved to nic.czJun 23, 2024t-mobile.cz's nameservers moved from t-mobile.cz, telekom.sk to nic.cz between May 20, 2024 and Jun 23, 2024. Last seen at t-mobile.cz, telekom.sk: May 20, 2024 (registration record). First seen at nic.cz: Jun 23, 2024 (registration record).Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Let's Encrypt issued 61 certificates for t-mobile.cz from Apr 29, 2026, the latest valid until Jan 24, 2027.
Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
DigiCert IncMay 5, 2026 – Oct 27, 2026 (latest)DigiCert Inc issued 21 certificates for t-mobile.cz from May 5, 2026, the latest valid until May 5, 2027. Seen in use on Oct 17, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader); TLS check, Oct 17, 2026
Deutsche Telekom Security GmbHMay 6, 2026 – Oct 27, 2026Deutsche Telekom Security GmbH issued 1 certificate for t-mobile.cz from May 6, 2026, the latest valid until Nov 19, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Google Trust ServicesMay 24, 2026 – Oct 27, 2026Google Trust Services issued 6 certificates for t-mobile.cz from May 24, 2026, the latest valid until Jan 9, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
ZeroSSL GmbHJun 2, 2026 – Oct 27, 2026ZeroSSL GmbH issued 3 certificates for t-mobile.cz from Jun 2, 2026, the latest valid until Dec 29, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Sectigo LimitedJun 16, 2026 – Oct 27, 2026Sectigo Limited issued 12 certificates for t-mobile.cz from Jun 16, 2026, the latest valid until May 12, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Jan 3, 2012 – Apr 26, 2014
Zone file: Registration records listed nextra.cz, t-mobile.cz nameservers (ns.t-mobile.cz, nss.t-mobile.cz, sns.nextra.cz) for t-mobile.cz from Jan 3, 2012 to Apr 26, 2014.Source: From registration records (WHOIS / RDAP archive, who.is)
Jan 3, 2012Zone file: t-mobile.cz's nameservers moved from nextra.cz, sloane.cz, t-mobile.cz to nextra.cz, t-mobile.cz between Nov 21, 2011 and Jan 3, 2012. Last seen at nextra.cz, sloane.cz, t-mobile.cz: Nov 21, 2011 (registration record). First seen at nextra.cz, t-mobile.cz: Jan 3, 2012 (registration record).Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Jun 30, 2014 – Feb 3, 2015Registrar: Registrar REG-1API in the WHOIS and RDAP records held for t-mobile.cz, from Jun 30, 2014 to Feb 3, 2015.Source: WHOIS / RDAP archive (who.is)
Jun 30, 2014Ownership: The registrant name or organization in the registration record changed; first recorded Jun 30, 2014. Who it changed to is in the full report.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Jun 30, 2014 – Feb 17, 2022Zone file: Registration records listed t-mobile.cz nameservers (freya.t-mobile.cz, idunn.t-mobile.cz) for t-mobile.cz from Jun 30, 2014 to Feb 17, 2022.Source: From registration records (WHOIS / RDAP archive, who.is)
Jun 30, 2014Zone file: t-mobile.cz's nameservers moved from nextra.cz, t-mobile.cz to t-mobile.cz at some point between Apr 26, 2014 and Jun 30, 2014. Last seen at nextra.cz, t-mobile.cz: Apr 26, 2014 (registration record). First seen at t-mobile.cz: Jun 30, 2014 (registration record). AboutUs holds no nameserver records for the 2 months in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Mar 18, 2015 – Aug 24, 2019Registrar: Registrar REG-GENREG in the WHOIS and RDAP records held for t-mobile.cz, from Mar 18, 2015 to Aug 24, 2019.Source: WHOIS / RDAP archive (who.is)
Mar 18, 2015Ownership: The registrant name or organization in the registration record changed; first recorded Mar 18, 2015. Who it changed to is in the full report.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
Dec 3, 2019 – Mar 30, 2021Registrar: Registrar REG-INTERNET-CZ in the WHOIS and RDAP records held for t-mobile.cz, from Dec 3, 2019 to Mar 30, 2021.Source: WHOIS / RDAP archive (who.is)
Jun 18, 2021 – May 28, 2026Registrar: Registrar REG-CORE in the WHOIS and RDAP records held for t-mobile.cz, from Jun 18, 2021 to May 28, 2026.Source: WHOIS / RDAP archive (who.is)
Jun 18, 2021Ownership: The registrant name or organization in the registration record changed; first recorded Jun 18, 2021. Who it changed to is in the full report.Source: WHOIS / RDAP archive (who.is); counted by registrant name and organization only
May 17, 2022 – May 20, 2024Zone file: Registration records listed t-mobile.cz, telekom.sk nameservers (eira.t-mobile.cz, eisa.telekom.sk, freya.t-mobile.cz…) for t-mobile.cz from May 17, 2022 to May 20, 2024.Source: From registration records (WHOIS / RDAP archive, who.is)
May 17, 2022Zone file: t-mobile.cz's nameservers moved from t-mobile.cz to t-mobile.cz, telekom.sk at some point between Feb 17, 2022 and May 17, 2022. Last seen at t-mobile.cz: Feb 17, 2022 (registration record). First seen at t-mobile.cz, telekom.sk: May 17, 2022 (registration record). AboutUs holds no nameserver records for the 3 months in between, so the date of the move is not known more closely.Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Jun 23, 2024 – May 28, 2026Zone file: Registration records listed nic.cz nameservers (tmobile1.ns.nic.cz, tmobile2.ns.nic.cz) for t-mobile.cz from Jun 23, 2024 to May 28, 2026.Source: From registration records (WHOIS / RDAP archive, who.is)
Jun 23, 2024Zone file: t-mobile.cz's nameservers moved from t-mobile.cz, telekom.sk to nic.cz between May 20, 2024 and Jun 23, 2024. Last seen at t-mobile.cz, telekom.sk: May 20, 2024 (registration record). First seen at nic.cz: Jun 23, 2024 (registration record).Source: Derived from the nameserver records on this lifeline (registration record → registration record)
Apr 27, 2026 – Oct 27, 2026Certificate: Entrust Limited issued 51 certificates for t-mobile.cz from Apr 27, 2026, the latest valid until May 7, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Apr 29, 2026 – Oct 27, 2026Certificate: Let's Encrypt issued 61 certificates for t-mobile.cz from Apr 29, 2026, the latest valid until Jan 24, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
May 5, 2026 – Oct 27, 2026Certificate: DigiCert Inc issued 21 certificates for t-mobile.cz from May 5, 2026, the latest valid until May 5, 2027. Seen in use on Oct 17, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader); TLS check, Oct 17, 2026
May 6, 2026 – Oct 27, 2026Certificate: Deutsche Telekom Security GmbH issued 1 certificate for t-mobile.cz from May 6, 2026, the latest valid until Nov 19, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
May 24, 2026 – Oct 27, 2026Certificate: Google Trust Services issued 6 certificates for t-mobile.cz from May 24, 2026, the latest valid until Jan 9, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Jun 2, 2026 – Oct 27, 2026Certificate: ZeroSSL GmbH issued 3 certificates for t-mobile.cz from Jun 2, 2026, the latest valid until Dec 29, 2026.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Jun 16, 2026 – Oct 27, 2026Certificate: Sectigo Limited issued 12 certificates for t-mobile.cz from Jun 16, 2026, the latest valid until May 12, 2027.Source: Certificate Transparency logs (AboutUs's own certificate-log reader)
Jun 30, 2026 – Aug 21, 2026AboutUs record: Authority and Safety last refreshed Aug 21, 2026.Source: AboutUs checks
Oct 17, 2026Registrar: Registrar COREHUB SL (Sociedad Unipersonal) in the registration data recorded on Oct 17, 2026.Source: RDAP, fetched Jul 11, 2026