Posted Monday, June 13, 2022, 1:00 p.m.

Scheduled Maintenance – June 14 at 5 am PST

Please be aware that on June 14th at 5 am PST, Atherton Fiber will be conducting proactive network maintenance. Some services hosted in Atherton could be affected. Customers might experience intermittent connectivity issues for 30 to 45 minutes. Services should be back to normal by 6am.

Any emails or phone calls sent to support staff during this scheduled outage window will be queued and responded to once service has been resumed.

Services impacted: Internet access. For a brief period, connectivity could be interrupted.

For more information, please contact the Support Desk by emailing or phoning 833-673-6546 ext 3.


Service & Billing Center
for Current Customers:

833-OPEN5GN | (833-673-6546)

Posted Wednesday, March 2, 2022, 3:00 p.m.

Fiber cut affecting multiple carriers impacting Bay Area Internet traffic

Please be aware that on March 1, at approximately 2:30 PM, Atherton Fiber lost connectivity on our circuit between Atherton and San Francisco. Traffic on our network automatically rerouted to an alternate path without issues.

Subsequently, we have learned that there has been a large fiber cut at Bayshore Freeway and Oyster Point Boulevard. The fiber cut has affected approximately a half dozen telecommunications providers including part of the Atherton Fiber network ring. Due to the severity of the fiber cut, a great deal of traffic is being rerouted and some Internet content providers may be having network capacity issues as well.

We have received a few support requests in the past 24 hours that we have attributed to this fiber break. The typical issue is slow connectivity to different sites and services as well as fluctuating bandwidth while using bandwidth intensive applications. This is caused by traffic taking sub-optimal network paths.

We apologize if you are being affected by this. Our network team has been monitoring this issue closely and working with our providers to actively reduce these issues.

Impact: With multiple providers affected, we expect the issue will take another 24-48 hours to resolve.

Posted Friday, December 3, 2021, 3:00 p.m.

Scheduled Proactive Network Maintenance
Thursday, December 9th at 12am
Services impacted: Internet access
Impact: For a brief period, connectivity will be interrupted.

Please be aware that on Thursday, December 9 at 12:00am, Atherton Fiber will be conducting proactive network maintenance. All services hosted in Atherton will be affected. Customers can expect a couple of ten-minute outages between 12am until 2am, and the affected time will likely be less.

Devices should reconnect automatically, but in some cases a reboot of the fiber modem (Calix, Icotera, Juniper) and wifi router may need to be performed. Any emails or phone calls sent to support staff during this scheduled outage window will be queued and responded to once service has been resumed.

Questions? For more information, please contact the Support Desk by emailing or phoning 833-673-6546, ext 3.

Posted Wednesday, November 24, 2021, 3:00 p.m.

Director of Network Engineering and Operations Steve Gibbard has written an informative blog post about how Atherton Fiber configures its DNS servers, and how using third-party DNS servers can affect your internet connection. Read the post here.

Posted Saturday, November 20, 2021, 11:00 p.m.

There appears to have been an issue over the weekend impacting customers who were using a third party DNS resolver. In order to maintain stable service, we recommend that our customers use Atherton Fiber’s DNS resolvers, so that we can fully support your Internet access.

Posted Friday, November 5, 2021, 11:00 a.m.

Our technicians are continuing to monitor and calibrate our network, but we are pleased to report that we believe that we have stabilized our network. We have seen no incidents in the past 24 hours. Please reach out if you are experiencing issues with your connection.

Posted Thursday, November 4, 2021, 11:00 a.m.

As you may be aware, the town of Atherton has recently relocated its municipal offices to the new Town Center. This has required us to temporarily move our communications hub to a new location. Yesterday, an issue with the router software in our recently-relocated hub caused a service interruption that has affected some of our users. Early this morning we performed a software upgrade intended to safeguard our network against future incidents.

We understand that your uninterrupted internet connection is essential to your life, and we apologize for any inconvenience that affected users have experienced. At the time of writing, unfortunately some of our customers continue to experience degraded performance issues with their connections. Please know that our team is currently working to restore normal performance levels.


We will post updates on this page on a regular basis as new information becomes available.