doubleu.us was registered with Squarespace Domains II LLC on 21 Feb 2019. Its SSL certificate from Let's Encrypt is valid until 25 Dec 2026, and the site does not support HTTP/3.
On-page basics for the homepage.
Networks cache previews — changes can take time to show.
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.
0 of 6 recommended headers
Forces HTTPS on future visits.
Limits where scripts can load from — the main defence against XSS.
Stops the site being framed for clickjacking.
Prevents browsers guessing file types.
Which AI crawlers this site allows, and whether it publishes an llms.txt.
No robots.txt, so every crawler may crawl the whole site. Not every crawler follows it. llms.txt is an optional guide some sites publish for AI assistants — it is not a ranking factor.
Pages and files that show who runs the site and how it handles data.
What loads and tracks visitors when the homepage opens.
Running a full browser scan of the homepage… This takes about a minute.
Internet standards that make a site faster and safer.
The path from a typed address to the final page.
158 similar domains registered in the last 90 days — possible typosquatting or phishing.
| Domain | Why it’s similar | Registered | Status | Report |
|---|---|---|---|---|
| doubleu.si | Other extension | 7 Oct 2026 | Checking… | Report → |
| doubleu.com.cn | Other extension | 5 Oct 2026 | Checking… | Report → |
| doubleu.mobi | Other extension | 21 Sept 2026 | Checking… | Report → |
| doubleu.live | Other extension | 3 Sept 2026 | Checking… | Report → |
| doubleu.now | Other extension | 30 Aug 2026 | Checking… | Report → |
From CubDomain's daily newly registered domains. Similar doesn't mean malicious.
Is doubleu.us’s name taken on other extensions?
| Host | IPv4 address | TTL |
|---|---|---|
| doubleu.us | 99.36.166.253 | 3600 |
| Host | Mail server | TTL |
|---|---|---|
| doubleu.us | 1 aspmx.l.google.com | 3600 |
| doubleu.us | 5 alt1.aspmx.l.google.com | 3600 |
| doubleu.us | 5 alt2.aspmx.l.google.com | 3600 |
| doubleu.us | 10 aspmx2.googlemail.com | 3600 |
| doubleu.us | 10 aspmx3.googlemail.com | 3600 |
| Host | Name server | TTL |
|---|---|---|
| doubleu.us | ns-cloud-d1.googledomains.com | 21600 |
| doubleu.us | ns-cloud-d2.googledomains.com | 21600 |
| doubleu.us | ns-cloud-d3.googledomains.com | 21600 |
| doubleu.us | ns-cloud-d4.googledomains.com | 21600 |
| Host | Start of authority | TTL |
|---|---|---|
| doubleu.us | ns-cloud-d1.googledomains.com cloud-dns-hostmaster.google.com 6 21600 3600 259200 300 | 21600 |
| Host | Value | TTL |
|---|---|---|
| doubleu.us | 256 3 8 AwEAAcgTOO7AV1LOie6i5A4VbaSrTztTRuwRw/idztn/IEBaBX+C65NNM2zt7M3peVaR6lfGZ4oF6B2njg/qaOKYPVgscwkgxU+UYC7azN9mawtjdSFCdc3Xo7HvO+di27XeIl64FSZRAOWlnEH5SXBkXFQc7lBscZmqFiz2EpJs8BeX | 300 |
| doubleu.us | 257 3 8 AwEAAePEc2BWTfgo3t2+6jn79g99fs0mSPAaRbjrkFaHUR69I7tauhmUmF36mOJ+TPQNWwQtYTiZuCim4ol1S3FefQiViyYweJ8bFxEqoqSFaZIfP4vhGDz1WMy5vtH9K3USCZWvk932qX32M93cZYFnWFYVKmf2LCgvGvXQHNgFjssBCq3SXqABu0loGhx+NLprnL3eiNAXz5VWodS+8r9RYtRraSf/tHQAgX4aM1qQiLZ7HqfdA02lZ+GdVwVIILzx/clgJE5YVAPqOU7E7X3R629aTmupaV3sxGF5wbzs5arKD94xwct5P6dOPZ7HBJ2HUPYtbUCbrlociFVkYNH8/b0= | 300 |
No reviews yet. Used doubleu.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.
doubleu.us has no community safety rating yet, and it isn't on any of the 6 blocklists we check. Its SSL certificate is valid until 25 Dec 2026. See Security →
doubleu.us is registered through Squarespace Domains II LLC. The owner's details are hidden by a privacy service in the public WHOIS record. See WHOIS →
The registration expires on 21 Feb 2027 — in 3 months. See Overview →
doubleu.us was registered on 21 Feb 2019, making it 7 years old. See Overview →
Raw registry data for doubleu.us. May be redacted by privacy services.
Domain Name: doubleu.us Registry Domain ID: D46D4F95C23F94015A0CFE288D25D5690-NSR Registrar WHOIS Server: whois.squarespace.domains Registrar URL: https://domains.squarespace.com Updated Date: 2026-02-11T01:07:05Z Creation Date: 2019-02-21T00:28:24Z Registry Expiry Date: 2027-02-21T00:28:24Z Registrar: Squarespace Domains II LLC Registrar IANA ID: 895 Registrar Abuse Contact Email: [email protected] Registrar Abuse Contact Phone: +1.6466935324 Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited Registry Registrant ID: C0AEAEB554A2242DB9B31CD63C152D816-NSR Registrant Name: Scott Hess Registrant Organization: Registrant Street: 4016 Orme St Registrant Street: Registrant Street: Registrant City: Palo Alto Registrant State/Province: CA Registrant Postal Code: 94306 Registrant Country: US Registrant Phone: +1.6502235944 Registrant Phone Ext: Registrant Fax: Registrant Fax Ext: Registrant Email: [email protected] Registrant Application Purpose: P3 Registrant Nexus Category: C11 Registry Admin ID: C6A699FE1C1E642D18BE11D48E1ACC99A-NSR Admin Name: Scott Hess Admin Organization: Admin Street: 4016 Orme St Admin Street: Admin Street: Admin City: Palo Alto Admin State/Province: CA Admin Postal Code: 94306 Admin Country: US Admin Phone: +1.6502235944 Admin Phone Ext: Admin Fax: Admin Fax Ext: Admin Email: [email protected] Admin Application Purpose: P3 Admin Nexus Category: C11 Registry Tech ID: C8314ADC598314B9F8F885A18E4A2D9BB-NSR Tech Name: Scott Hess Tech Organization: Tech Street: 4016 Orme St Tech Street: Tech Street: Tech City: Palo Alto Tech State/Province: CA Tech Postal Code: 94306 Tech Country: US Tech Phone: +1.6502235944 Tech Phone Ext: Tech Fax: Tech Fax Ext: Tech Email: [email protected] Tech Application Purpose: P3 Tech Nexus Category: C11 Name Server: ns-cloud-d2.googledomains.com Name Server: ns-cloud-d3.googledomains.com Name Server: ns-cloud-d4.googledomains.com Name Server: ns-cloud-d1.googledomains.com DNSSEC: signedDelegation URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/ >>> Last update of WHOIS database: 2026-11-01T13:01:07Z <<< 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.
The first response from http://www.doubleu.us, before any redirect: caching, server and policy headers.
Four timed TCP connections to port 443 from CubDomain's servers.
CubDomain is not affiliated with doubleu.us. Data is collected independently from public sources and some figures are estimates, provided for information only.
Controls how much of the URL is shared with other sites.
Restricts camera, microphone and other browser features.
From the homepage's response, https://doubleu.us/
Spam and malware blocklists for the site's IP and mail servers.
0 of 6 blocklists list this domain's IP or mail servers.
When the site first appeared, and what has changed since.
No changes seen since we started recording on 1 Nov 2026.
Found in public certificate transparency logs.
No subdomains found in the certificate transparency logs.