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Email Domains Starting with U

Search email domains by risk status

Search and browse email domains classified by RiskMail. Identify temporary/disposable domains and safe email providers.

Jump to All 0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
letter U
u-063f3godu1.urlcash.net
No MX
Safe
u-1p2onr6ls.urlcash.net
No MX
Safe
u-1s0qhuurp.urlcash.net
No MX
Safe
u-1v6b9ggs4.urlcash.net
No MX
Safe
u-2b1j7rwec0.urlcash.net
No MX
Safe
u-2bs3mbufz.urlcash.net
No MX
Safe
u-2erk8qdrbv.urlcash.net
No MX
Safe
u-3b05lijjrp.urlcash.net
No MX
Safe
u-3bfgd1ioco.urlcash.net
No MX
Safe
u-3bnt1id0q.urlcash.net
No MX
Safe
u-3i4wf22f.urlcash.net
No MX
Safe
u-3mrs.fr
Business Domain
Safe
u-46.org
Business Shared MX
Safe
u-69.tumblr.com
No MX
Safe
u-a-furry-hoe.tumblr.com
No MX
Safe
u-a.fi
Business Shared MX
Safe
u-acg.com
Temporary / Disposable
u-aiiuawltbm.urlcash.net
No MX
Safe
u-audio.com.tw
Business Domain
Safe
u-blox.com
Business Shared MX
Safe
u-bordeaux-montaigne.fr
Business Domain
Safe
u-bordeaux.fr
Business Domain
Safe
u-bordeaux1.fr
No MX
Safe
u-bordeaux2.fr
Business Domain
Safe
u-bourgogne.fr
Business Domain
Safe
u-buy.co.uk
Business Shared MX
Safe
u-buy.com.ng
Business Shared MX
Safe
u-cam-girls-overzicht.startspot.nl
No MX
Safe
u-camtoppers.startspot.nl
No MX
Safe
u-can.co.jp
Business Domain
Safe
u-can.jp
Business Domain
Safe
u-car.co.jp
Business Domain
Safe
u-car.com.tw
Business Domain
Safe
u-cep.com
Business Shared MX
Safe
u-cergy.fr
Business Domain
Safe
u-cheats.ru
No MX
Safe
u-cho.net
No MX
Safe
u-cloud.co.za
Business Domain
Safe
u-com.at
Business Domain
Safe
u-coop.net
Business Domain
Safe
u-cum.blogspot.com
No MX
Safe
u-cursos.cl
Business Shared MX
Safe
u-e4snfvehuf.eightteen.com
No MX
Safe
u-emploi.com
Business Shared MX
Safe
u-en.cn
No MX
Safe
u-energo.ru
Business Domain
Safe
u-f-l.net
Business Domain
Safe
u-f.ru
Business Domain
Safe
u-f32ws2asz3.urlcash.net
No MX
Safe
u-fly.com
Business Domain
Safe
u-ga.fr
Business Domain
Safe
u-ghwq8l.com
No MX
Safe
u-ginekologa.ru
Business Domain
Safe
u-google.co
No MX
Safe
u-gov.it
Business Shared MX
Safe
u-hiv.com
Business Shared MX
Safe
u-host.in
Business Domain
Safe
u-id.net
No MX
Safe
u-igroup.com
Business Domain
Safe
u-igz.top
No MX
Safe
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Explore domain risk signals used by the RiskMail API

The RiskMail domain directory is a public reference for email domains we have classified. Every entry is one of two states: Temporary / Disposable (a known throwaway-mail provider) or Safe (a free public email provider, a regular business domain with valid mail infrastructure, or a domain we have not yet seen disposable signals for).

If you operate a signup or login flow, this list is a starting point — disposable providers come and go faster than any static list can track. The RiskMail API reflects the live database in real time and returns a clean verdict: disposable | safe for each request.

See something missing or misclassified? Tell us and we'll re-evaluate the domain.