Visitor

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7 Messages

Monday, July 7th, 2025

CODA56 - Only getting 5.8Mbps uplink

On the NOW200 plan. Supposed to be 200/20 speeds.

I'm blowing past the 200Mbps downlink but the uplink almost seems like there's something that is actively preventing anything higher than 5.8Mbps. I say that because the downlink speed varies quite a bit (time of day, etc) but the uplink speed ALWAYS max out at 5.8Mbps w/o fail. It creeps up and then bounces back and forth between 5.7 and 5.8Mbps.

This is a owner-bought brand new CODA56. The previous is an Xfinity supplied modem that consistently gave about 25Mbps uplink speeds in tests.

I have access to the CODA56 admin page, but from what I understand about the different things there, nothing stands out. Signal levels look really good. (about 43dBmV)

Ideas?

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Official Employee

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2.3K Messages

2 months ago

Hi there, @user_nrqes5 I'm sorry to hear about your slow speeds that you have been experiencing. Since it's been a few days since you last posted, are you still experiencing issues with your speeds? If so, please don't hesitate to reach back out.-Richard

Visitor

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7 Messages

2 months ago

Yes. No changes in speed so far

Official Employee

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2.3K Messages

Thank you, @user_nrqes5 Are you getting that speed while you are using Wi-Fi or when you are hard-wired directly into the modem?-Richard

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Visitor

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7 Messages

I'm connecting directly to one of the modems Ethernet ports.

Official Employee

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2.1K Messages

@user_nrqes5 Have you checked to make sure all your coaxial cabling is in good condition? This would mean no damage, signs of age, hard bends or kinks on them. If so, we recommend you swap them out for new ones. This would help ensure the connection is solid. Also, have you reached out to NOW Internet Support for assistance with your connection? They may be able to provide additional help.

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 a reply as the Accepted Answer.tick

Visitor

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7 Messages

2 months ago

Yes. No changes in speed so far

Contributor

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32 Messages

1 month ago

@user_nrqes5 per this link https://www.xfinity.com/support/articles/now-internet-faqs you need to use the Xfinity pre paid modem, I recommend connecting the pre paid Xfinity modem and jump on the xfinity app and run a speed test , the app actually test the speeds coming into the Xfinity modem 

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