Short answer
An ad history tracker shows when each of a business's Google ads was first and last shown, using records from Google's Ads Transparency Center. It draws a timeline for every ad, counts the ads active in each month, ranks the longest-running ads and flags ads that are new in the last 30 days, so you can spot a competitor's seasons, tests and long-term messages.
How to use the Ad History Tracker
- Enter the competitor's website and run the lookup.
- Scan the ads active by month to spot their busy and quiet periods.
- Review the longest-running ads first, since these are the messages the business has kept.
- Check the ads that are new in the last 30 days to see what they started recently.
How can you see a competitor's ad history?
Google's Ads Transparency Center records the ads an advertiser has run and the last date each one ran (Google's launch post), and you can filter it by date (My Ad Center Help). The ad history tracker takes those records for one website and turns them into a timeline, so you see patterns instead of a pile of ads.
Our Ads Transparency Center guide covers Google's own site. Lookups here use live data fetched through a data provider, which costs money, so free lookups are limited each month and results are cached for a few days. A competitor's newest ads can take a few days to appear.
How do you read first shown, last shown and days shown?
| Measure | What it means | How to read it |
|---|---|---|
| First shown | The first date the ad ran | When that message started |
| Last shown | The most recent date it ran | A date in the last few days suggests it is still live |
| Days shown | The days the ad actually ran between its first and last dates | Far fewer days than the gap between the dates means it ran on and off |
| Ads active by month | How many of their ads were running in each month | Rises and dips show seasons, launches and pauses |
| New in the last 30 days | Ads first shown in the past 30 days | What they started recently |
What does a long-running ad tell you?
It tells you the business kept the ad in use. The tracker shows dates, not clicks, costs or sales, so it cannot tell you whether the ad made money.
Still, a business paying for an ad has a reason to drop it if it seems to fail, so an ad that keeps running is a fair place to start. Treat it as a hint, not proof: some ads run for months simply because nobody checked them.
Look for what the long runners share. The same offer, call to action or proof point across several of them is likely the core message the business has settled on.
Patterns worth spotting
- Seasonal rises. A heating and cooling company adding ads before summer and winter, or a tax preparer before filing season.
- A steady base. The same few ads all year point to an always-on campaign.
- Bursts of new ads. Many first shown dates in one month can mean a new campaign, a new offer or a rebrand.
- Gaps. A quiet month can be a pause, a budget cut or a shift to other channels.
- An old last shown date. If nothing has run for months, they may have stopped advertising on Google.
Tips for using ad history in your own planning
- Time your pushes. If competitors ramp up before a season, have your own new ads and budget ready a few weeks earlier, so they are live when demand rises.
- Study the long runners. Paste their text into the Competitor Messaging Analyzer to pull out themes, offers and gaps.
- Keep a dated record. Export the full list with the Advertiser Research Exporter each quarter and compare.
- Get told about new ads. The New Ad Monitor emails you each week when a tracked competitor starts new ones.
- Do not chase every change. One new ad may be a test. A run of new ads on the same theme is a shift worth answering.
Sources
- Announcing the launch of the new Ads Transparency Center (Google blog)
- About advertiser verification (My Ad Center Help)
- Ads transparency (Google Advertising Policies Help)
- Ads Transparency Center (Google)
Updated 2 October 2026 by the Paid Pilot team. Google Ads is a trademark of Google LLC; Paid Pilot is an independent agency.