Visitor

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1 Message

Saturday, April 18th, 2026 2:17 PM

Mark Underground Cable

I need the underground cable marked for my landscaper who will be doing some digging and edging around the house.  

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Official Employee

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3.4K Messages

3 months ago

 

user_kb2b3y

Hi there! Great question, and we’re glad you checked before any digging, that’s always the safest move.

 

For marking underground lines, you’ll want to contact 811 (Call Before You Dig). That’s a free nationwide service that notifies all utility providers, including Xfinity, to come out and mark their lines on your property.

 

You can either call 811 or submit a request online at Call 811. Once the request is submitted, technicians will come out and mark the lines, usually within a few business days.

 

We definitely recommend doing this before any digging or landscaping to avoid damage and keep everyone safe. Let us know if you have any questions along the way!

 
 

 

Expert

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119.4K Messages

3 months ago

The concern is not "accessibility / disability" help related............ Topic moved here to the proper help section. 

Visitor

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1 Message

3 months ago

I called 811 to have my line marked. I got an email from Comcast’s saying there are no lines 

we know there are lines and need them marked. Who do I call?

Official Employee

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1.1K Messages

Greetings @user_hvzt8t, and thanks for posting your question to the Xfinity forums, I hope this message finds you well. It is possible that there are lines that are buried in your yard, but if you called 811 and were told that there are no Comcast lines, then it is possible that there are some from another provider.

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
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Visitor

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1 Message

3 months ago

I am getting irrigation installed at my home and submitted a request with 811 and comcast to locate buried lines. Comcast promptly closed the case "No conflict" we know for fac that there are buried lines on the property.  I filed a second notice with 811 and called comcast directly.  Comcast sent out a technician who showed up at my home ready to install and setup my new service??? This is ridiculous. 


I work from home and cant be without internet should the irrigation contractor cut a line on accident because comcast didn't mark them.

Official Employee

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3K Messages

 

user_ubf6o9 Thank you for reaching out so we can check for the work order to mark your underground lines before installing the new underground downspout drain line. 
 
Please send us a direct message with your full name and complete service address to “Xfinity Support”. To do so, click on the direct messaging icon located at the top right of this forums page.
How to Send Us a Direct Message: https://forums.xfinity.com/conversations/guidelines/how-to-direct-messaging-within-the-forum/697ba1e570934d009185c514
1. Click "Sign In" if necessary.
2. Click the "Direct Messaging" icon.
3. Click the "Start new conversation" (pencil and paper) icon. 
4. In the "To:" line, type "Xfinity Support".
5. As you type, a drop-down list will appear. Select "Xfinity Support" from that list.
6. An "Xfinity Support" graphic will replace the "To:" line.
7. Type your message in the text area near the bottom of the window.
8. Press Enter to send it. 

 

(edited)

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please mark as Best Answer.tick
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