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: siflex.us
Registry Domain ID: D5BF0F8344DE140C5AC0D8E12F08B3E5F-GDREG
Registrar WHOIS Server: whois.cloudflare.com
Registrar URL: www.cloudflare.com
Updated Date: 2025-07-21T01:23:05Z
Creation Date: 2025-07-16T01:23:05Z
Registry Expiry Date: 2026-07-16T01:23:05Z
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: CA559D33ED304466BADBE02F10BF6C9FA-GDREG
Registrant Name: Yakdol Jo
Registrant Organization:
Registrant Street: Kyonggi-do
Registrant Street:
Registrant Street:
Registrant City: Suwon
Registrant State/Province: -
Registrant Postal Code: 16501
Registrant Country: KR
Registrant Phone: +82.1031020006
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: ourpebble@gmail.com
Registrant Application Purpose: P4
Registrant Nexus Category: C31/KR
Registry Admin ID: C6D850A1F18FC41D58471AF80139B0D02-GDREG
Admin Name: Yakdol Jo
Admin Organization:
Admin Street: Kyonggi-do
Admin Street:
Admin Street:
Admin City: Suwon
Admin State/Province: -
Admin Postal Code: 16501
Admin Country: KR
Admin Phone: +82.1031020006
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: ourpebble@gmail.com
Admin Application Purpose: P4
Admin Nexus Category: C31/KR
Registry Tech ID: C5E2D64D59B5E4FD9AA9E3E464ECC5345-GDREG
Tech Name: Yakdol Jo
Tech Organization:
Tech Street: Kyonggi-do
Tech Street:
Tech Street:
Tech City: Suwon
Tech State/Province: -
Tech Postal Code: 16501
Tech Country: KR
Tech Phone: +82.1031020006
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: ourpebble@gmail.com
Tech Application Purpose: P4
Tech Nexus Category: C31/KR
Name Server: ali.ns.cloudflare.com
Name Server: arnold.ns.cloudflare.com
DNSSEC: signedDelegation
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2026-06-03T19:22:41Z <<<
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: SIFLEX.US
Registry Domain ID: D5BF0F8344DE140C5AC0D8E12F08B3E5F-GDREG
Registrar WHOIS Server: whois.cloudflare.com
Registrar URL: https://www.cloudflare.com
Updated Date: 2025-09-18T01:56:13Z
Creation Date: 2025-07-16T01:23:05Z
Registrar Registration Expiration Date: 2026-07-16T01:23:05Z
Registrar: Cloudflare, Inc.
Registrar IANA ID: 1910
Domain Status: clienttransferprohibited https://icann.org/epp#clienttransferprohibited
Registry Registrant ID:
Registrant Name: Yakdol Jo
Registrant Organization:
Registrant Street: Kyonggi-do
Registrant City: Suwon
Registrant State/Province: -
Registrant Postal Code: 16501
Registrant Country: KR
Registrant Phone: +82.1031020006
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: ourpebble@gmail.com
Registry Admin ID:
Admin Name: Yakdol Jo
Admin Organization:
Admin Street: Kyonggi-do
Admin City: Suwon
Admin State/Province: -
Admin Postal Code: 16501
Admin Country: KR
Admin Phone: +82.1031020006
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: ourpebble@gmail.com
Registry Tech ID:
Tech Name: Yakdol Jo
Tech Organization:
Tech Street: Kyonggi-do
Tech City: Suwon
Tech State/Province: -
Tech Postal Code: 16501
Tech Country: KR
Tech Phone: +82.1031020006
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: ourpebble@gmail.com
Registry Billing ID:
Billing Name: Yakdol Jo
Billing Organization:
Billing Street: Kyonggi-do
Billing City: Suwon
Billing State/Province: -
Billing Postal Code: 16501
Billing Country: KR
Billing Phone: +82.1031020006
Billing Phone Ext:
Billing Fax:
Billing Fax Ext:
Billing Email: ourpebble@gmail.com
Name Server: ali.ns.cloudflare.com
Name Server: arnold.ns.cloudflare.com
DNSSEC: signedDelegation
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: 2026-06-03T19:22:41Z <<<
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: 569 msec
% WHEN: Wed Jun 03 19:22:40 UTC 2026
