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: dfdb.us
Registry Domain ID: DD2DDB29B04DB4942B8C61DC8E7FBD199-GDREG
Registrar WHOIS Server: whois.cloudflare.com
Registrar URL: www.cloudflare.com
Updated Date: 2026-09-28T04:10:12Z
Creation Date: 2021-10-23T01:23:14Z
Registry Expiry Date: 2027-10-23T01:23:14Z
Registrar: Cloudflare, Inc.
Registrar IANA ID: 1910
Registrar Abuse Contact Email: registrar-abuse@cloudflare.com
Registrar Abuse Contact Phone: +1.4153197517
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: CDF25AA4A64684127B8F686E0D7E8047A-GDREG
Registrant Name: David Berndtsson
Registrant Organization: DFDB LLC
Registrant Street: 30 N Gould Street
Registrant Street:
Registrant Street:
Registrant City: Sheridan
Registrant State/Province: WY
Registrant Postal Code: 82801
Registrant Country: US
Registrant Phone: +1.8566764328
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: david.berndtsson@dfdb.us
Registrant Application Purpose: P1
Registrant Nexus Category: C21
Registry Admin ID: CD83E3C18D99B4BF68D81733D374E2F4C-GDREG
Admin Name: David Friedman
Admin Organization: DFDB LLC
Admin Street: 30 N Gould Street
Admin Street:
Admin Street:
Admin City: Sheridan
Admin State/Province: WY
Admin Postal Code: 82801
Admin Country: US
Admin Phone: +1.8566764328
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: david.friedman@dfdb.us
Admin Application Purpose: P1
Admin Nexus Category: C21
Registry Tech ID: CB9B637CA0CBE440CB62BFA7CB7AF7D2C-GDREG
Tech Name: David Friedman
Tech Organization: DFDB LLC
Tech Street: 30 N Gould Street
Tech Street:
Tech Street:
Tech City: Sheridan
Tech State/Province: WY
Tech Postal Code: 82801
Tech Country: US
Tech Phone: +1.8566764328
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: david.friedman@dfdb.us
Tech Application Purpose: P1
Tech Nexus Category: C21
Name Server: annalise.ns.cloudflare.com
Name Server: patrick.ns.cloudflare.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-10-07T07:33:42Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
.US WHOIS Complaint Tool - http://www.whoiscomplaints.us
Advanced WHOIS Instructions - http://whois.us/help.html
Registry Services, LLC, the Registry Administrator for .US, has collected this information for the WHOIS database through a .US-Accredited Registrar. This information is provided to you for informational purposes only and is designed to assist persons in determining contents of a domain name registration record in the registry database.
Registry Services, LLC makes this information available to you "as is" and 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 will you use this data:
(1) to allow, enable, or otherwise support the transmission of mass unsolicited, commercial advertising or solicitations via direct mail, electronic mail, or by telephone;
(2) in contravention of any applicable data and privacy protection laws; or
(3) to enable high volume, automated, electronic processes that apply to the registry (or its systems).
Compilation, repackaging, dissemination, or other use of the WHOIS database in its entirety, or of a substantial portion thereof, is not allowed without our prior written permission.
We reserve the right to modify or change these conditions at any time without prior or subsequent notification of any kind. By executing this query, in any manner whatsoever, you agree to abide by these terms. NOTE: FAILURE TO LOCATE A RECORD IN THE WHOIS DATABASE IS NOT INDICATIVE OF THE AVAILABILITY OF A DOMAIN NAME. All domain names are subject to certain additional domain name registration rules. For details, please visit our site at www.whois.us.
Domain Name: DFDB.US
Registry Domain ID: DD2DDB29B04DB4942B8C61DC8E7FBD199-GDREG
Registrar WHOIS Server: whois.cloudflare.com
Registrar URL: https://www.cloudflare.com
Updated Date: 2026-09-23T04:10:08Z
Creation Date: 2021-10-23T01:23:14Z
Registrar Registration Expiration Date: 2027-10-23T01:23:14Z
Registrar: Cloudflare, Inc.
Registrar IANA ID: 1910
Domain Status: clienttransferprohibited https://icann.org/epp#clienttransferprohibited
Domain Status: renewperiod https://icann.org/epp#renewperiod
Registry Registrant ID:
Registrant Name: David Berndtsson
Registrant Organization: DFDB LLC
Registrant Street: 30 N Gould Street
Registrant City: Sheridan
Registrant State/Province: WY
Registrant Postal Code: 82801
Registrant Country: US
Registrant Phone: +1.8566764328
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: david.berndtsson@dfdb.us
Registry Admin ID:
Admin Name: David Friedman
Admin Organization: DFDB LLC
Admin Street: 30 N Gould Street
Admin City: Sheridan
Admin State/Province: WY
Admin Postal Code: 82801
Admin Country: US
Admin Phone: +1.8566764328
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: david.friedman@dfdb.us
Registry Tech ID:
Tech Name: David Friedman
Tech Organization: DFDB LLC
Tech Street: 30 N Gould Street
Tech City: Sheridan
Tech State/Province: WY
Tech Postal Code: 82801
Tech Country: US
Tech Phone: +1.8566764328
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: david.friedman@dfdb.us
Registry Billing ID:
Billing Name: David Friedman
Billing Organization: DFDB LLC
Billing Street: 30 N Gould Street
Billing City: Sheridan
Billing State/Province: WY
Billing Postal Code: 82801
Billing Country: US
Billing Phone: +1.8566764328
Billing Phone Ext:
Billing Fax:
Billing Fax Ext:
Billing Email: david.friedman@dfdb.us
Name Server: annalise.ns.cloudflare.com
Name Server: patrick.ns.cloudflare.com
DNSSEC: unsigned
Registrar Abuse Contact Email: registrar-abuse@cloudflare.com
Registrar Abuse Contact Phone: +1.4153197517
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2026-10-07T07:33:42Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
Cloudflare provides more than 13 million domains with the tools to give their global users a faster, more secure, and more reliable internet experience.
NOTICE:
Data in the Cloudflare Registrar WHOIS database is provided to you by Cloudflare
under the terms and conditions at https://www.cloudflare.com/domain-registration-agreement/
By submitting this query, you agree to abide by these terms.
Register your domain name at https://www.cloudflare.com/registrar/
% Query time: 624 msec
% WHEN: Wed Oct 07 07:33:41 UTC 2026
