MAID-HEM 90-Day

Specifications

Release: January 21, 2025

Version: 1.35.0

Size: 319.5G parquet, 190.9G .csv

Update Freq: Monthly

Note: This file is a subset of the full MAID-HEM linkage file, limited to signals observed within the last 90 days.

Key Feature Trends

Data Schema, Counts, and Fill Rates

FeatureDescriptionCountsFill Rate
maid_lcMobile Ad ID that can be used to resolve identity and in-market traffic. MAIDs come in 2 flavors; Apple and Android. Apple IDs (IDFA) specifically attributed to iOS are formatted as all UPPERCASE, while Android (aaid) and other IDs are formatted as lowercase. maid_lc are the lowercase-only MAIDs.1,909,685,974100%
maid_last_seenThe date by which a MAID was last seen in our data flows. This date should be updated to the latest date when processing any incoming dataset. Dates should be formatted in Epoch time.1,909,685,974100%
sha25_lc_hem1,909,685,974100%
md5_lc_hemmd5 lowercase HEM (Hashed EMail) for the purpose of matching and identity management.1,909,685,974100%
sha1_lc_hemThe most observed Sha1 lowercase Hashed EMail (HEM) for this person. Used for identity management and file matching.1,909,685,974100%
MAID_platformThe OS platform associated with the MAID based on the structure of the MAID itself. Values are: 'android', 'ios'.1,909,685,974100%

What’s Next

For additional information, please see the release notes linked below.