Profile: XO

View XO outages and uptime

XO Communications offers internet and managed services to business customers. XO was previously known as Nextlink Communications, Concentric Network Corporation and Allegiance Telecom.

  Uptime last 24 hours

  Response Time last 24 hours

Shows the "instant" that the monitor started returning a response (in ms).

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Current Status


For 2 months
(Since Aug 18, 2016 7:49 p.m. GMT)

  • 100.0% (last 24 hours)
  • 100.0% (last 7 days)
  • 100.0% (last 30 days)
Latest Downtime
No downtime recorded.
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Phone: 800.421.3872