postfast.us was registered with Dynadot Inc on 6 Apr 2026. We couldn't read an SSL certificate for it when we last analysed it.
What security vendors and the WOT community say about this domain.
0 of 5 protections set up
No SPF record: any server can send mail that claims to come from this domain.
—No key at the 12 common selectors we checked. A custom selector can’t be found from DNS alone.
—No DMARC policy: receivers aren’t told what to do with mail that fails SPF and DKIM.
—Forces encrypted delivery between mail servers.
—Shows the brand logo in supporting inboxes. Optional; needs DMARC enforcement.
—Read from the domain's public DNS records.
What loads and tracks visitors when the homepage opens.
Running a full browser scan of the homepage… This takes about a minute.
We couldn't read an SSL certificate on port 443 when we last analysed postfast.us. Refresh the analysis to check again.
Internet standards that make a site faster and safer.
9 similar domains registered in the last 90 days — possible typosquatting or phishing.
| Domain | Why it’s similar | Registered | Status | Report |
|---|---|---|---|---|
| postcast.site | Typo | 9 Sept 2026 | Active website | Report → |
| postfat.xyz | Typo | 6 Oct 2026 | Parked | Report → |
| mostfast.se | Typo | 28 Oct 2026 | Active website | Report → |
| portfast.xyz | Typo | 7 Oct 2026 | Parked | Report → |
| postlast.xyz | Typo | 7 Oct 2026 | Parked | Report → |
From CubDomain's daily newly registered domains. Similar doesn't mean malicious.
Is postfast.us’s name taken on other extensions?
| Host | Mail server | TTL |
|---|---|---|
| postfast.us | 10 mail.hotmailyx.us | 300 |
| Host | Name server | TTL |
|---|---|---|
| postfast.us | ns1.dyna-ns.net | 300 |
| postfast.us | ns2.dyna-ns.net | 300 |
| Host | Start of authority | TTL |
|---|---|---|
| postfast.us | ns1.dyna-ns.net hostmaster.postfast.us 2026040503 16384 2048 1209600 300 | 300 |
No reviews yet. Used postfast.us? Be the first to say how it went.
Reviews are from CubDomain users and are separate from the security verdicts above.
Common questions, answered from this report's data.
postfast.us has no community safety rating yet. We couldn't read an SSL certificate on it when we last analysed it. See Security →
postfast.us is registered through Dynadot Inc. The owner's details are hidden by a privacy service in the public WHOIS record. See WHOIS →
The registration expires on 6 Apr 2027 — in 5 months. See Overview →
postfast.us was registered on 6 Apr 2026, making it 6 months old. See Overview →
Raw registry data for postfast.us. May be redacted by privacy services.
Domain Name: postfast.us Registry Domain ID: D8FAEAD3656B14B95A422D940C3462BAD-GDREG Registrar WHOIS Server: whois.dynadot.com Registrar URL: https://www.dynadot.com/ Updated Date: 2026-06-05T06:30:46Z Creation Date: 2026-04-06T06:30:43Z Registry Expiry Date: 2027-04-06T06:30:43Z Registrar: Dynadot Inc Registrar IANA ID: 472 Registrar Abuse Contact Email: [email protected] Registrar Abuse Contact Phone: +1.6502620100 Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited Registry Registrant ID: C96FACFB978A1465496BDC95FC4B5198E-GDREG Registrant Name: sunny smith Registrant Organization: Registrant Street: 3354 Little Street Registrant Street: Registrant Street: Registrant City: INDIO Registrant State/Province: Registrant Postal Code: none Registrant Country: US Registrant Phone: +376.8458695131 Registrant Phone Ext: Registrant Fax: Registrant Fax Ext: Registrant Email: [email protected] Registrant Application Purpose: P3 Registrant Nexus Category: C31/US Registry Admin ID: C96FACFB978A1465496BDC95FC4B5198E-GDREG Admin Name: sunny smith Admin Organization: Admin Street: 3354 Little Street Admin Street: Admin Street: Admin City: INDIO Admin State/Province: Admin Postal Code: none Admin Country: US Admin Phone: +376.8458695131 Admin Phone Ext: Admin Fax: Admin Fax Ext: Admin Email: [email protected] Admin Application Purpose: P3 Admin Nexus Category: C31/US Registry Tech ID: C96FACFB978A1465496BDC95FC4B5198E-GDREG Tech Name: sunny smith Tech Organization: Tech Street: 3354 Little Street Tech Street: Tech Street: Tech City: INDIO Tech State/Province: Tech Postal Code: none Tech Country: US Tech Phone: +376.8458695131 Tech Phone Ext: Tech Fax: Tech Fax Ext: Tech Email: [email protected] Tech Application Purpose: P3 Tech Nexus Category: C31/US Name Server: ns2.dyna-ns.net Name Server: ns1.dyna-ns.net DNSSEC: unsigned URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/ >>> Last update of WHOIS database: 2026-10-31T08:26:25Z <<< 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.
Four timed TCP connections to port 443 from CubDomain's servers.
CubDomain is not affiliated with postfast.us. Data is collected independently from public sources and some figures are estimates, provided for information only.
Spam and malware blocklists for the site's IP and mail servers.
Found in public certificate transparency logs.
Searching the certificate transparency logs… This can take up to a minute.
When the site first appeared, and what has changed since.
No changes seen since we started recording on 31 Oct 2026.