MAID-HEM 60
Specifications
Release: October 21, 2025
Version: 2.48.0
Size: 612.1 G (.csv), 248.4 G (parquet)
Update Freq: Monthly
Note: This file is a subset of the full MAID-HEM linkage file, limited to signals observed within the last 60 days.
Data Schema, Counts, and Fill Rates
| Feature | Description | Counts | Fill Rate |
|---|---|---|---|
| maid_lc | Mobile 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. | 1,602,065,840 | 100% |
| maid_last_seen | The 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. | 1,602,065,840 | 100% |
| sha25_lc_hem | The most observed Sha25 lowercase Hashed Email (HEM) for this person. Used for identity management and file matching. | 1,602,065,840 | 100% |
| md5_lc_hem | md5 lowercase HEM (Hashed Email) for the purpose of matching and identity management. | 1,602,065,840 | 100% |
| sha1_lc_hem | The most observed Sha1 lowercase Hashed Email (HEM) for this person. Used for identity management and file matching. | 1,602,065,840 | 100% |
| MAID_platform | The OS platform associated with the MAID based on the structure of the MAID itself. Values are: 'android', 'ios'. | 1,602,065,840 | 100% |
Updated 10 days ago
What’s Next
For additional information, please see the release notes linked below.