Is CenturyLink or Xfinity (Comcast) faster?

Based on 1,130 verified speed tests, Xfinity (Comcast) is faster overall. CenturyLink averages 179 Mbps download, Xfinity (Comcast) averages 360 Mbps download.

What is the average speed difference between CenturyLink and Xfinity (Comcast)?

The average download speed difference is 181 Mbps. Upload speed difference is 21 Mbps. Ping difference is 18 ms.

Should I choose CenturyLink or Xfinity (Comcast)?

It depends on your use case. Xfinity (Comcast) offers faster average speeds, but actual performance varies by location and plan. Test your current connection and compare to both averages before switching.

CenturyLink vs Xfinity (Comcast)

Full speed comparison based on 1,130 verified measurements.

Overall Winner: Xfinity (Comcast)

CenturyLink

Download

179 Mbps

Upload Wins

107 Mbps

Ping

51 ms

Based on 139 measurements · Full CenturyLink stats →

Xfinity (Comcast)

WINNER

Download Wins

360 Mbps

Upload

86 Mbps

Ping Wins

33 ms

Based on 991 measurements · Full Xfinity (Comcast) stats →

Speed Difference Summary

Download difference

181 Mbps

Xfinity (Comcast) is faster

Upload difference

21 Mbps

CenturyLink is faster

Ping difference

18 ms

Xfinity (Comcast) has lower latency

By Country

Head-to-head comparison where both ISPs have user data.

United States Xfinity (Comcast) wins

CenturyLink 179 Mbps (139 tests)

Xfinity (Comcast) 360 Mbps (991 tests)

Test your own speed

See if your connection matches the CenturyLink or Xfinity (Comcast) average.

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How CenturyLink Compares to Xfinity (Comcast)

Based on 1,130 verified speed tests from CenturyLink and Xfinity (Comcast) customers, Xfinity (Comcast) delivers faster average speeds.

CenturyLink averages 179 Mbps download with 107 Mbps upload and 51 ms ping. Xfinity (Comcast) averages 360 Mbps download with 86 Mbps upload and 33 ms ping.

Averages tell only part of the story — actual speeds vary by your specific plan, location, time of day, and whether you use Ethernet or Wi-Fi. Run a speed test on your current connection to see how it compares to both averages before making a switching decision.

CenturyLink speed Xfinity (Comcast) speed All ISPs Country speeds