Contact Us

CoreSite is committed to responding to your inquiries and feedback as quickly as possible.

+1 866.777.CORE
+1 303.405.1000

Please fill out the form below or email our customer service team at

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form. Please try again.


Local CoreSite service personnel is stationed in the CoreSite offices in the main regional data center location, reachable in-person, by email or phone from 8 a.m. to 5 p.m. local time. Corporate service personnel is available from 8 a.m. to 5 p.m. Mountain time.

  • Operations support center service personnel are available 24 hours a day via phone or email.
  • You can also reach any CoreSite department via our automated phone routing system, accessible by dialing +1 866.777.CORE.
  • Every customer also receives the direct extension and email for their dedicated account manager and service representative for easy outreach.



Our operations and facilities teams work 24x7x365, providing the following options for emergency support:

Option 1: Login to MyCoreSite and submit a trouble ticket
Option 2: Email CoreSite Emergency Support at
Option 3: Contact a local operations team member


Should you have any questions or concerns regarding a statement, contact our accounting group directly via or by calling +1 866.777.CORE. As always, if you wish to involve our Customer Service team in any inquiry, please contact them at


If you are having difficulties logging in to your account in MyCoreSite, our service delivery platform, our customer service team will assist you. Whether you need to change a password or have any another issue, please email with details regarding your need and a representative will assist you as quickly as possible.

Subscribe to CoreSite

Thank you! Your submission has been received.
Oops! Something went wrong while submitting the form.