Le champs SPF est un champs important pour la délivrabilité de vos e-mails. Mal configuré, absent, cela peut vous occasionner des rejets de réception des e-mails que vous envoyez à vos correspondants. Un autre champs TXT important est la signature DKIM qui jour également, énormément, en faveur de la délivrabilité des vos e-mails
Plus généralement, le SPF, ou Sender Policy Framework, est un système de vérification conçu pour empêcher l'usurpation d'adresse électronique en validant l'expéditeur d'un e-mail. Lorsqu'un domaine met en place un enregistrement SPF, il spécifie quels serveurs de messagerie sont autorisés à envoyer des e-mails. Lorsqu'un e-mail est reçu, le serveur de réception peut vérifier cet enregistrement pour s'assurer que l'e-mail provient d'un serveur des serveurs autorisés. Si ce n'est pas le cas, il peut être marqué comme suspect ou rejeté, ce qui aide à réduire le spam et le phishing en vérifiant que les e-mails proviennent bien de la source autorisés.
Domain Name: defineci.biz
Registry Domain ID: REDACTED FOR PRIVACY
Registrar WHOIS Server: whois.nicproxy.com
Registrar URL: www.nicproxy.com
Updated Date: 2025-12-06T10:55:34Z
Creation Date: 2009-12-02T16:07:01Z
Registry Expiry Date: 2026-12-01T23:59:59Z
Registrar: Nics Telekomunikasyon A.S.
Registrar IANA ID: 1454
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone:
Domain Status: ok https://icann.org/epp#ok
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: PCdestek
Registrant Street: REDACTED FOR PRIVACY
Registrant Street: REDACTED FOR PRIVACY
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: Sisli
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: TR
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID:
Admin Name:
Admin Organization:
Admin Street:
Admin Street:
Admin Street:
Admin City:
Admin State/Province:
Admin Postal Code:
Admin Country:
Admin Phone:
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email:
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: ns1.defineci.biz
Name Server: ns2.defineci.biz
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-06-01T12:05:57Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
The Service is provided so that you may look up certain information in relation to domain names that we store in our database.
Use of the Service is subject to our policies, in particular you should familiarise yourself with our Acceptable Use Policy and our Privacy Policy.
The information provided by this Service is 'as is' and we make no guarantee of it its accuracy.
You agree that by your use of the Service you will not use the information provided by us in a way which is:
* inconsistent with any applicable laws,
* inconsistent with any policy issued by us,
* to generate, distribute, or facilitate unsolicited mass email, promotions, advertisings or other solicitations, or
* to enable high volume, automated, electronic processes that apply to the Service.
You acknowledge that:
* a response from the Service that a domain name is 'available', does not guarantee that is able to be registered,
* we may restrict, suspend or terminate your access to the Service at any time, and
* the copying, compilation, repackaging, dissemination or other use of the information provided by the Service is not permitted, without our express written consent.
This information has been prepared and published in order to represent administrative and technical management of the TLD.
We may discontinue or amend any part or the whole of these Terms of Service from time to time at our absolute discretion.
Domain Name: DEFINECI.BIZ
Registry Domain ID: D37112663-BIZ
Registrar WHOIS Server: rdap.nicproxy.com
Registrar URL: nicproxy.com
Updated Date: 2025-12-01T10:46:26Z
Creation Date: 2009-12-02T16:07:01Z
Registrar Registration Expiration Date: 2026-12-01T23:59:59Z
Registrar: NICS Telekomunikasyon A.S.
Registrar Name: NICS Telekomunikasyon A.S.
Registrar IANA ID: 1454
Registrar Email: abuse@nicproxy.com
Registrar Phone: +90.2122132963
Registrar Abuse Email: abuse@nicproxy.com
Registrar Abuse Phone: +90.2122132963
Registrar Street: Mecidiyekoy Yolu Cad. Trump Tower No:12 Iç Kapi No: 470
Registrar City: Istanbul
Registrar State / Province: Sisli
Registrar Postal Code: 34387
Registrar Country: TR
Registrar Abuse: NICS Telekomunikasyon A.S.
Registrar Abuse Name: NICS Telekomunikasyon A.S.
Domain Status: ok https://www.icann.org/epp#ok
Registrant: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant IANA ID: NICS-registrant
Registrant Organization: REDACTED FOR PRIVACY
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State / Province: REDACTED FOR PRIVACY
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: TR
Registrant Contact URI: https://whoisshelter.nicproxy.com/?d=DEFINECI.BIZ
Admin: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin IANA ID: NICS-administrative
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State / Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: TR
Admin Contact URI: https://whoisshelter.nicproxy.com/?d=DEFINECI.BIZ
Tech: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech IANA ID: NICS-technical
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State / Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: TR
Tech Contact URI: https://whoisshelter.nicproxy.com/?d=DEFINECI.BIZ
Name Server: ns2.defineci.biz
Name Server: ns1.defineci.biz
DNSSEC: Unsigned
>>>Last update of WHOIS database: 2026-06-01T12:05:58Z<<<
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
For more information on Whois status codes, please visit https://icann.org/epp
IMPORTANT: Port43 will provide the ICANN-required minimum data set per
ICANN Temporary Specification, adopted 04 Jun 2018.
Visit whois.nicproxy.com to look up contact data for domains
not covered by GDPR policy.
!****************************************************************************!
NICS Telekomunikasyon A.S., uluslararasi alan adi kayit otoritesi olan ICANN
onayli bir alan adi kayit firmasidir.
Bu alan adina ait web sitesinin icerigi ya da yayinlanmasiyla hicbir sekilde ilgisi yoktur.
Sadece, ICANN kurallari cercevesinde alan adinin kayit edilmesine aracilik yapmaktadir.
Bu alan adi sahibinin kayit sirasinda verdigi bilgiler yukaridaki gibidir.
NICS Telekomunikasyon A.S., bu bilgilerin dogrulugunu garanti edemez.
Daha fazla bilgi almak icin info [at] nicproxy.com adresine yazabilirsiniz.
!*****************************************************************************!
The data in the WHOIS database of NICS Telekomunikasyon A.S. is provided by
Nics Telekomunikasyon Ltd. for information purposes, and to assist persons in
obtaining information about or related to domain name registration
records. NICS Telekomunikasyon A.S. does not guarantee its accuracy.
By submitting a WHOIS query, you agree that you will use this data
only for lawful purposes and that, under no circumstances, you will
use this data to
1) allow, enable, or otherwise support the transmission of mass
unsolicited, commercial advertising or solicitations via E-mail(spam) or
2) enable high volume, automated, electronic processes that apply
to Nics Telekomunikasyon Ltd. or its systems.
Nics Telekomunikasyon Ltd. reserves the right to modify these terms.
By submitting this query, you agree to abide by this policy.
NICProxy Whois Server Ver.2.0
% Query time: 999 msec
% WHEN: Mon Jun 01 12:05:57 UTC 2026
