In February 2026, the addition of 510,537 new ads.txt lines and the removal of 404,213 existing lines resulted in a net change of approximately 106k+ lines, showing an increase from January with an even stronger positive shift this month. This net growth has increased significantly compared to levels seen over the past few months, largely driven by rising activity among low-traffic publishers and a higher volume of reseller line additions.
The changes in the ads.txt lines show notable improvements compared to previous months. Here are some top SSPs that have gained a good number of new connections.
- Sharethrough emerged as the strongest contributor this month, reflecting accelerated onboarding among low- and mid-traffic publishers that continued to gain traction. PubMatic and Index Exchange followed closely, supported by sustained publisher adoption and established demand-side engagement across traffic tiers.
- OpenX and Rubicon also posted solid gains, indicating steady expansion of authorised supply through ongoing publisher additions. Overall, this month’s rankings reflect continued momentum from SSPs strengthening their presence across mid- and low-traffic inventory, while maintaining stability among high-traffic publishers.
Want to know more? Please download the full report for a detailed breakdown.
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