kcl.ac.uk - Email Domain Verification & Deliverability Report

Active Education Email
Organization: King's College London
Mail Server: Microsoft 365
Verified 4 days ago

Verify email addresses @kcl.ac.uk. View MX records, mail server configuration, and authentication status for King's College London.

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MX Records for kcl.ac.uk

PriorityMail ServerIP Address
10 kcl-ac-uk.mail.protection.outlook.com 52.101.73.12
SMTP Status: Responding
SMTP Banner:
220 DU2PEPF00028D07.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Sun, 8 Mar 2026 18:10:34 +0000 [08DE79B2E7B8BA1E]

kcl.ac.uk uses Microsoft 365 mail servers, which means emails are processed through Microsoft 365 infrastructure with their built-in spam filtering and security controls.

Email Authentication for kcl.ac.uk

SPF Record Pass

v=spf1 include:spf1.kcl.ac.uk include:spf2.kcl.ac.uk include:spf3.kcl.ac.uk include:servers.mcsv.net include:spf.protection.outlook.com include:spf-eu.exlibrisgroup.com include:_spf.mlsend.com include:27107063.spf04.hubspotemail.net include:spf2.accessacloud.com ~all
Authorized Senders:
spf1.kcl.ac.uk spf2.kcl.ac.uk spf3.kcl.ac.uk servers.mcsv.net spf.protection.outlook.com spf-eu.exlibrisgroup.com _spf.mlsend.com 27107063.spf04.hubspotemail.net spf2.accessacloud.com

SPF (Sender Policy Framework) specifies which mail servers are authorized to send email on behalf of kcl.ac.uk.

DMARC Record Quarantine

v=DMARC1;p=quarantine;pct=100;sp=none;rua=mailto:dmarc-rua@dmarc.service.gov.uk,mailto:dmarc_agg@vali.email,mailto:kcldmarcreportsvc@kcl.ac.uk;ruf=mailto:kcldmarcfdr@kcl.ac.uk;

Policy applied to: 100% of emails

DMARC (Domain-based Message Authentication) tells receiving servers what to do with emails that fail authentication checks.

DKIM Found

DKIM signatures were detected for kcl.ac.uk, confirming that this domain cryptographically signs outgoing emails.

Authentication Summary: kcl.ac.uk has full email authentication configured with SPF, DMARC, and DKIM. This provides strong protection against email spoofing and phishing. Emails sent from this domain are well-authenticated and likely to have high deliverability.

WHOIS & Domain Information

Registration Details

Domain
kcl.ac.uk
TLD
.ac.uk
Created
2003-11-03
Updated
2025-11-01
Expires
2028-02-01
Domain Age
22 years

Registrar

Name
Jisc Services Limited
IANA ID
1485

Registrant Contact

Name
Nick Leake
Organization
King's College London
Location
London, UNITED KINGDOM

Name Servers

  • ndc-cns-ext-01.kcl.ac.uk193.61.207.73
  • sdc-cns-ext-01.kcl.ac.uk193.61.202.150
  • ns3.ja.net

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Verify kcl.ac.uk Emails via API in Real-Time
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Frequently Asked Questions

Yes, kcl.ac.uk is a valid educational institution email domain operated by King's College London. It is used by students, faculty, and staff for academic correspondence.
No, kcl.ac.uk is not a disposable or temporary email provider. It is an institutional email domain. However, student email addresses may be deactivated after graduation depending on the institution's policy.
kcl.ac.uk uses mail servers managed by or on behalf of King's College London. Many universities use Microsoft 365 or Google Workspace for their email infrastructure. Check the MX records section above for details.
You can send emails to kcl.ac.uk addresses with proper consent. Be aware that educational institutions often employ strict spam filtering, and student addresses may become inactive after graduation. Regular list hygiene is recommended.
Use BulkEmailChecker to verify kcl.ac.uk addresses. Educational domains may use catch-all configurations or have specific SMTP behaviors. Our tool handles these institution-specific configurations automatically.
The fastest and most accurate way to verify a kcl.ac.uk email address is to use BulkEmailChecker's free email verification tool. Simply enter the full email address and our system performs SMTP-level validation by connecting directly to kcl.ac.uk's mail servers. You'll get instant results showing whether the mailbox exists, is deliverable, and is safe to send to, all without sending a single email.
Yes. BulkEmailChecker uses SMTP verification to check if a kcl.ac.uk mailbox exists without ever delivering an email. Our system connects to the domain's mail server, performs an SMTP handshake, and queries the mail server to confirm whether the recipient address is valid. This process is completely invisible to the email recipient and does not affect your sender reputation.
Sending to invalid email addresses causes hard bounces, which directly damage your sender reputation. Internet Service Providers (ISPs) and email providers track your bounce rate, and if it exceeds 2%, your emails may start landing in spam folders or get blocked entirely. Verifying kcl.ac.uk addresses with BulkEmailChecker before sending prevents bounces and keeps your deliverability high.
BulkEmailChecker's bulk verification service lets you upload a CSV or TXT file containing thousands of kcl.ac.uk email addresses and verify them all at once. Each address goes through 30+ verification checks including syntax validation, DNS/MX lookup, SMTP verification, disposable domain detection, and spam trap identification. Results are typically ready within minutes and can be downloaded as a clean, verified list.
Email verification is the process of confirming that an email address is real, properly formatted, and capable of receiving messages. It matters because sending to invalid addresses causes bounces, damages your sender reputation, wastes marketing budget, and can get your sending IP blacklisted. BulkEmailChecker verifies addresses at the SMTP level, the most accurate method available, ensuring your emails reach real people.
MX (Mail Exchange) records are DNS entries that specify which mail servers are responsible for receiving email for a domain. When you send an email, your mail server looks up the recipient domain's MX records to find where to deliver the message. If a domain has no MX records, it cannot receive email. BulkEmailChecker checks MX records as part of every verification to confirm the domain is configured for email delivery.
A catch-all (or accept-all) domain is configured to accept email sent to any address at that domain, regardless of whether the specific mailbox exists. This makes it harder to verify individual addresses because the server always responds positively. BulkEmailChecker detects catch-all configurations and flags them in verification results so you can make informed decisions about sending to those addresses.
Yes. BulkEmailChecker offers a real-time email verification API that you can integrate into signup forms, CRM systems, lead capture tools, and any application that collects email addresses. The API validates addresses at the point of entry, blocking invalid, disposable, and risky emails before they enter your database. Integration takes just a single API call with response times under 3 seconds.

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