Zillow’s dominant market share of desktop traffic to listing portals is even more pronounced among mobile users, according to new mobile Web traffic metrics from Experian Marketing Services.

Until now, third-party Web traffic metrics excluded measurements from mobile devices, which left a large chunk — about 25 percent, by some estimates — of traffic unaccounted for.

The new Experian data must also be taken with a grain of salt, because it doesn’t include mobile app usage — only website visits by mobile users who are surfing the Internet using a browser or Web app.

Desktop and mobile traffic data in January tracked each other with some notable exceptions, according to Experian, which surveys mobile data from Apple and Android smartphones and tablets over 3G and 4G networks, and from all mobile device platforms over Wi-Fi.

As is the case with the previously released numbers for desktop traffic, Zillow, Trulia and Realtor.com are the three real estate sites with the most traffic in the category. But Zillow takes a significantly larger chunk of traffic from mobile users (19.78 percent), compared with a 9.17 percent share of desktop traffic.

Redfin (3.69 percent of mobile traffic) and ZipRealty (2.77 percent) also fared much better on mobile than desktop, rising to No. 4 and No. 6 on list of most visited real estate sites from mobile. On desktop, they captured 0.83 percent and 1.13 percent of traffic, respectively, which made them the 18th and 12th most-visited sites in January.