Thank you for contacting ISC!

We will be in touch shortly

Thank you for your interest in ISC’s software and services. An ISC representative will respond to your message as soon as possible. We are a small team, so please allow 1-2 business days. You may also call us at +1 650 423 1300.

In the meantime, for more information about our BIND 9, Kea DHCP, or ISC DHCP support contracts, please visit ISC Support.

If you have a question about BIND 9, Kea DHCP, or ISC DHCP and you are not looking for a support contract, you might want to try asking the user community via one of the user mailing lists we host at

If you are trying to report an issue with one of our software projects, please visit the appropriate site:

If you think your issue could be a security vulnerability in one of our projects, please do not open a GitLab issue; instead, email us at

ISC is located in Redwood City, California, United States. Our business hours are Monday through Friday, 9:00 AM to 5:00 PM, Pacific Time.

Thank you and we look forward to speaking with you soon.

–The ISC team