Is CenturyLink or Xfinity (Comcast) faster?

Based on 1,286 verified speed tests, Xfinity (Comcast) is faster overall. CenturyLink averages 185 Mbps download, Xfinity (Comcast) averages 351 Mbps download.

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

The average download speed difference is 166 Mbps. Upload speed difference is 25 Mbps. Ping difference is 16 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 1,286 verified measurements.

Overall Winner: Xfinity (Comcast)

CenturyLink

Download

185 Mbps

Upload Wins

106 Mbps

Ping

49 ms

Based on 152 measurements · Full CenturyLink stats →

Xfinity (Comcast)

WINNER

Download Wins

351 Mbps

Upload

81 Mbps

Ping Wins

33 ms

Based on 1,134 measurements · Full Xfinity (Comcast) stats →

Speed Difference Summary

Download difference

166 Mbps

Xfinity (Comcast) is faster

Upload difference

25 Mbps

CenturyLink is faster

Ping difference

16 ms

Xfinity (Comcast) has lower latency

By Country

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

United States Xfinity (Comcast) wins

CenturyLink 185 Mbps (152 tests)

Xfinity (Comcast) 351 Mbps (1134 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 1,286 verified speed tests from CenturyLink and Xfinity (Comcast) customers, Xfinity (Comcast) delivers faster average speeds.

CenturyLink averages 185 Mbps download with 106 Mbps upload and 49 ms ping. Xfinity (Comcast) averages 351 Mbps download with 81 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