MailSure

Is ucl.ac.uk a valid email domain?

Organisation domainChecked 2026-11-06

Mail for ucl.ac.uk is handled by 1 server at Microsoft (Outlook or Microsoft 365), with ucl-ac-uk.mail.protection.outlook.com tried first.

It is not a free provider and is not on our disposable list, so addresses here usually belong to a company, school or other organisation.

SPF is published and ends with ~all. DMARC is set to quarantine.

Check an email address at ucl.ac.uk

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MX records (Microsoft (Outlook or Microsoft 365))

PriorityMail serverResolves to
0ucl-ac-uk.mail.protection.outlook.com52.101.209.153, 52.101.73.145

SPF

Record published

v=spf1 include:_u.ucl.ac.uk._spf.dmarclyeu.com ~all

DMARC

Policy: quarantine

v=DMARC1; p=quarantine; rua=mailto:6423f25cbecf4@ag.eu.dmarcly.com,mailto:dmarc@ucl.ac.uk; ruf=mailto:6423f25cbecf4@fo.eu.dmarcly.com; fo=1; pct=100; rf=afrf

Disposable?

No, not on our disposable list.

Free provider?

No, not a known free provider.

What this means for your email list

What this means for addresses at this domain

ucl.ac.uk looks like an organisation's own domain. Those are usually good leads, and also where bounces come from: people change jobs and mailboxes get closed. Checking each address, including whether the server accepts any recipient, avoids damaging your sender reputation.

Sender authentication

ucl.ac.uk uses a DMARC quarantine policy: mail that fails authentication is sent to spam. That is a sound middle step, and a good sign the owner looks after their email setup.

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Frequently asked questions

Is ucl.ac.uk a valid email domain?
Yes. ucl.ac.uk publishes 1 MX record and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
Is ucl.ac.uk a disposable email domain?
No. ucl.ac.uk is not on our disposable list. The list is updated regularly, and new throwaway domains appear all the time.
What are the MX records for ucl.ac.uk?
ucl-ac-uk.mail.protection.outlook.com (priority 0).
Does ucl.ac.uk have SPF and DMARC?
SPF: yes, ending ~all. DMARC: yes, policy quarantine.

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