• Does your Bay area business need to streamline network management? Are you looking for a unified communications platform that will work for your needs? XO Communications can help. Consistently named the top provider of business VoIP services in the United States, we’re adept at developing cost-effective solutions to communications and networking challenges for businesses of all sizes.

    The XO Service Portfolio: San Francisco

    Which communications and networking services make the most sense for your business? XO’s San Francisco office commonly receives requests for a range of services, including:


    Cloud-Based Solutions

    Enjoy simpler network management and a unified communications infrastructure while keeping equipment expenditures and operating costs low. Cloud-based solutions from XO help your business quickly scale to meet evolving needs and demands.

    Learn more about our Cloud-Based Solutions»

    Dedicated Internet Access

    Never share so-called "business class" bandwidth again! XO provides true business-grade service over our award-winning Tier 1 Internet backbone. That means you get superior performance and private, guaranteed bandwidth-not the headaches, delays and downtime associated with shared service.

    Learn more about our Dedicated Internet Access Services»

    MPLS Services

    Put the most up-to-date MPLS technology to work for your business. Quickly deploy applications, steer clear of security risks and make network management simpler, all while enjoying the reduced costs associated with implementing an industry leading IP-VPN.

    Learn more about our MPLS Services.»

    SIP Trunking

    Maximize the value of your existing IP-PBX investment and take advantage of the benefits inherent in a VoIP network. XO SIP Trunking helps you cut costs while integrating your voice, data and Internet.

    Learn more about our SIP Trunking Services»

    IP Flex with VPN

    Need a private network with multi-location capabilities? Consider XO IP Flex with VPN. Features include highly flexible bandwidth options, built-in routing intelligence and the ability to customize management levels.

    Learn more about our IP Flex with VPN Services»

    Explore All of What XO Has to Offer

    XO Communications has helped businesses in San Francisco, Oakland, San Jose, and other cities in the Bay area to overcome taxing communications and networking challenges. Looking for a service not mentioned here?

    See the full list of XO Communications Services»
  • 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

    San Francisco (Paul Ave.)
    200 Paul Ave
    2nd Floor

    San Francisco, CA 94124

    Freemont (Warm Spring Blvd)
    47923 Warm Springs Blvd.
    1st Floor
    Freemont, CA 94539

    San Francisco (Brannan St.)
    651 Brannan St. 
    Suite 310
    San Francisco, CA 94124

  • Uncorking the Bottleneck:
    XO Communications MPLS IP VPN and Wine.com

  • Sales Office Locations

    XO Communications
    855 Mission Court
    Building 1
    Fremont, CA 94539

    XO Communications
    55 Almaden Blvd
    Suite 700
    San Jose CA 95113

    XO Communications
    12667 Alcosta Blvd
    Suite 350
    San Ramon CA 94583

    XO Communications
    651 Brannan St
    Suite 310
    San Francisco, CA 94107

  • 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.