021uu.com was registered with whois.verisign-grs.com on 24 Aug 2022. Its SSL certificate from Google Trust Services is valid until 9 Dec 2026, and the site supports 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
The page is served over plain HTTP, so HTTPS can’t be enforced.
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.
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.
10 similar domains registered in the last 90 days — possible typosquatting or phishing.
| Domain | Why it’s similar | Registered | Status | Report |
|---|---|---|---|---|
| 012uu.cn | Typo | 16 Oct 2026 | Checking… | Report → |
| 021u8.com | Typo | 29 Oct 2026 | Checking… | Report → |
| 21uu.my | Typo | 4 Oct 2026 | Checking… | Report → |
| v21uu.com | Typo | 8 Sept 2026 | Checking… | Report → |
| 051uu.vip | Typo | 19 Oct 2026 | Checking… | Report → |
From CubDomain's daily newly registered domains. Similar doesn't mean malicious.
Is 021uu.com’s name taken on other extensions?
Every IP address 021uu.com resolves to, and where it's hosted.
| Host | IPv4 address | TTL |
|---|---|---|
| 021uu.com | 104.21.24.191 | 300 |
| 021uu.com | 172.67.220.28 | 300 |
| Host | IPv6 address | TTL |
|---|---|---|
| 021uu.com | 2606:4700:130:436c:6f75:6466:6c61:7265 | 282 |
| Host | Name server | TTL |
|---|---|---|
| 021uu.com | austin.ns.cloudflare.com | 86400 |
| 021uu.com | miki.ns.cloudflare.com | 86400 |
| Host | Start of authority | TTL |
|---|---|---|
| 021uu.com | austin.ns.cloudflare.com dns.cloudflare.com 2417626273 10000 2400 604800 1800 | 1800 |
Other domains served from 172.67.220.28. Normal for shared hosting and CDNs.
No reviews yet. Used 021uu.com? 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.
021uu.com has no community safety rating yet, and it isn't on any of the 6 blocklists we check. Its SSL certificate is valid until 9 Dec 2026. See Security →
021uu.com is registered through whois.verisign-grs.com. See WHOIS →
The registration expired on 24 Aug 2023. See Overview →
021uu.com was registered on 24 Aug 2022, making it 4 years old. See Overview →
021uu.com is served from 4 IP addresses, mainly on AS13335. See Hosting →
Raw registry data for 021uu.com. May be redacted by privacy services.
{"objectClassName":"domain","handle":"2720409737_DOMAIN_COM-VRSN","ldhName":"021UU.COM","links":[{"value":"https:\/\/rdap.verisign.com\/com\/v1\/domain\/021UU.COM","rel":"self","href":"https:\/\/rdap.verisign.com\/com\/v1\/domain\/021UU.COM","type":"application\/rdap+json"},{"value":"https:\/\/www.namesilo.com\/rdap\/domain\/021UU.COM","rel":"related","href":"https:\/\/www.namesilo.com\/rdap\/domain\/021UU.COM","type":"application\/rdap+json"}],"status":["client transfer prohibited"],"entities":[{"objectClassName":"entity","handle":"1479","roles":["registrar"],"publicIds":[{"type":"IANA Registrar ID","identifier":"1479"}],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text","NameSilo, LLC"]]],"entities":[{"objectClassName":"entity","roles":["abuse"],"vcardArray":["vcard",[["version",{},"text","4.0"],["fn",{},"text",""],["tel",{"type":"voice"},"uri","tel:+1.4805240066"],["email",{},"text","[email protected]"]]]}]}],"events":[{"eventAction":"registration","eventDate":"2022-08-24T05:22:34Z"},{"eventAction":"expiration","eventDate":"2023-08-24T05:22:34Z"},{"eventAction":"last changed","eventDate":"2022-08-24T05:22:39Z"},{"eventAction":"last update of RDAP database","eventDate":"2023-02-24T10:26:59Z"}],"secureDNS":{"delegationSigned":false},"nameservers":[{"objectClassName":"nameserver","ldhName":"AUSTIN.NS.CLOUDFLARE.COM"},{"objectClassName":"nameserver","ldhName":"MIKI.NS.CLOUDFLARE.COM"}],"rdapConformance":["rdap_level_0","icann_rdap_technical_implementation_guide_0","icann_rdap_response_profile_0"],"notices":[{"title":"Terms of Use","description":["Service subject to Terms of Use."],"links":[{"href":"https:\/\/www.verisign.com\/domain-names\/registration-data-access-protocol\/terms-service\/index.xhtml","type":"text\/html"}]},{"title":"Status Codes","description":["For more information on domain status codes, please visit https:\/\/icann.org\/epp"],"links":[{"href":"https:\/\/icann.org\/epp","type":"text\/html"}]},{"title":"RDDS Inaccuracy Complaint Form","description":["URL of the ICANN RDDS Inaccuracy Complaint Form: https:\/\/icann.org\/wicf"],"links":[{"href":"https:\/\/icann.org\/wicf","type":"text\/html"}]}]}The first response from http://www.021uu.com, before any redirect: caching, server and policy headers.
Four timed TCP connections to port 443 from CubDomain's servers.
CubDomain is not affiliated with 021uu.com. 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, http://021uu.com/
Spam and malware blocklists for the site's IP and mail servers.
0 of 6 blocklists list this domain's IP or mail servers.
Found in public certificate transparency logs.
No subdomains found in the certificate transparency logs.
When the site first appeared, and what has changed since.
No changes seen since we started recording on 2 Nov 2026.