Highline internet phone number. Tell us the approximate time the outage started, or when you first noticed loss of connection. Email: HighlineCO@highlinefast. See where Highline offers its high-speed internet and voice services in Michigan, Colorado, Georgia and other states across the country. If you have an immediate concern or question, please call our Customer Care team directly at 1-888-212-0054 so that you do not experience any delays in response from us; otherwise, complete our contact form below. Enter your address to see if high-speed internet and voice services are available where you live. We will respond as quickly as possible. Call us at 1-888-212-0054 or fill out the form below. Speak to a representative to sign up for Highline services. Highline serves over 600 square miles in central Colorado and provides a suite of communication services including Internet and phone service. If you have an immediate concern or question, please call our Customer Care team directly at 1-888-212-0054 so that you do not experience any delays in response from us; otherwise, complete our contact form below. Get help with issues you may be experiencing with Highline internet and voice services. All rights reserved. © 2025 Highline. . Check availability or contact us online. Order Now! Upgrade Now! Phone: (719) 837-6400. com. koyn fgrr wdvh rinvqhm zbzajzhx ehzkllo qsw fqiwp mia are