• Every day, businesses throughout the United States count on XO Communications for customizable, secure networking solutions—and your Seattle business can too.  As the nation’s number one provider for business VoIP services, we know what it takes to deliver customizable, secure communications solutions for businesses of all sizes.  No matter if your small business needs a solid networking foundation to get started or your growing enterprise is adding another location, you can count on XO to create a customized communications solution that meets your unique concerns. 

  • The XO Service Portfolio: Seattle

    At XO, we own the network upon which we build all of our services—that means that at the root of every XO offering is our award-winning, secure nationwide network. We offer a variety of communications services, and in Seattle our most-requested services include:  

    Business Internet

    A scalable, customized solution for true business grade Internet access, XO’s Business Internet services are perfect for both small businesses and multi-location enterprise organizations.  Experience guaranteed bandwidth and superior speed delivered on your own private, never shared connection.  Learn more about our Business Internet Services>>

    Cloud Computing (IaaS - Infrastructure as a Service)

    Whether you’re exploring Infrastructure as a Service (IaaS) solutions or are searching for a way to better manage costs and increase business agility, consider Cloud Computing services from XO. With our secure, nationwide network environment you can count on XO to deliver the highest level of performance possible.  Learn more about our Cloud Computing Services>>

    Voice & Data Services

    Experience the ease-of-management that comes with integrated voice and data communications.  XO’s Voice & Data Services bundle your communications to provide you with the most reliable, most scalable, easiest-to-manage communications solution available today.  Learn more about our Voice & Data Services>>


    Looking for a way to get costs under control and make managing your network easier?  Consider SIP services from XO.  Because our SIP services build upon your existing technology and network resources, you can avoid unnecessary IT expenses while you take advantage of the cost savings, ease-of-management and productivity benefits associated with SIP.  Learn more about our SIP Services>>

    Cloud Security

    Looking for an affordable, effective, and easy-to-manage security solution?  Explore Cloud Security services from XO. Our fully-managed suite of network-based security functionality offers your infrastructure and applications the highest level of protection against today’s security threats, and tomorrow’s. Learn more about our Cloud Security Services>>

    Business Internet, Cloud Solutions and Beyond - XO Offers a Plethora of Enterprise Services

    XO Communications offers the proven networking and communications experience your business requires. As the nation’s top provider of business VoIP services, we have real world experience in helping businesses of all size to integrate their communications and simplify their network and communications management—and we can help your Seattle business too.  

  • The Right Network for Your Business

    Better solutions demand door-to-door delivery of communications traffic at the fastest speeds available. With XO, you’ll have leading IP and networking solutions delivered over our own private, award winning nationwide network to all your locations. Our unique combination of nationwide IP and transport networks, metro networks and fixed wireless capabilities allows us to provide maximum coverage, performance and scalability.

    Learn more about why we have The Right Network for your business >>

  • Medium.Enterprise Sales

    Let our local experts design a solution to meet your unique business needs with a free consultation.


  • Small Business Sales

    Call to talk to one of our Small Business Consultants, or click to fill out the form


    Request Small Business Pricing
  • Colocation Facilities

    Denny Way
    1000 Denny Way
    3rd Floor
    Seattle, WA 98109

    Second Avenue
    1100 Second Avenue
    First Floor
    Seattle, WA 98101

  • Reduce Mobile Costs with XO WorkTime

  • Revving Up to Compete: XO Communications MPLS-enabled WAN and Kawasaki Motors Corp. U.S.A.

  • Sales Office Location

    XO Communications
    1000 Denny Way
    Suite 200
    Seattle, WA 98109

  • Curious about our network coverage?

    The core of the XO IP network is a mesh of multiple 10 Gigabit (Gbps) circuits, connecting XO network nodes, peering POPs and XO Data Centers nationwide. The XO IP backbone runs across its own intercity fiber facilities, supported by terabit-capable core routing platforms and high-capacity peering interconnections. XO offers Dedicated Internet Access (DIA) and IP Transit customers enhanced Internet connectivity. This network design delivers maximum end-to-end throughput as well as high levels of protection, redundancy, and Quality of Service required to support XO Voice over IP services

    The XO IP network utilizes an advanced IP design, ensuring scalability as well as the ability to offer advanced future IP services plus the added benefit of no single IP point of failure past the customers' access port

    And since the XO IP network and market connections run end-to-end across XO facilities, XO can quickly resolve any problems that may occur; which eliminates many of the common failure points found in older network designs.

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    XO serves businesses nationwide and has global reach to more than 50 countries. Submit your U.S. business address to find out service options at your location.