CenturyLink vs Xfinity (Comcast)
Full speed comparison based on 2,095 verified measurements.
CenturyLink
261 Mbps
151 Mbps
44 ms
Xfinity (Comcast)
WINNER357 Mbps
72 Mbps
33 ms
Speed Difference Summary
Download difference
96 Mbps
Xfinity (Comcast) is faster
Upload difference
79 Mbps
CenturyLink is faster
Ping difference
11 ms
Xfinity (Comcast) has lower latency
By Country
Head-to-head comparison where both ISPs have user data.
Test your own speed
See if your connection matches the CenturyLink or Xfinity (Comcast) average.
How CenturyLink Compares to Xfinity (Comcast)
Based on 2,095 verified speed tests from CenturyLink and Xfinity (Comcast) customers, Xfinity (Comcast) delivers faster average speeds.
CenturyLink averages 261 Mbps download with 151 Mbps upload and 44 ms ping. Xfinity (Comcast) averages 357 Mbps download with 72 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.