Why aren't ads showing well in our area?

First paragraph — summary conclusion

Ads may not appear well in a specific area because platforms support different geographic targeting units and because IP-based location data vary in accuracy. First check which unit (e.g., city, postal code, etc.) your platform allows you to target for the area you want.

Different platforms offer different geographic target units and ranges

For example, Google Ad Manager can target ranges such as country, city, or postal code, but not every country offers the same level of precision. If an advertiser or developer sets an overly granular area, impressions can drop sharply.

Also, in some countries postal codes are very small or sparsely populated, which can reduce targeting accuracy; and if you exclude a parent region in targeting, lower-level postal codes may be automatically excluded.

• Google Ad Manager supports targeting units like city and postal code, but available options vary by country.
• If the specified postal code range is too narrow or a higher-level region is excluded, ads may not be served.

Accuracy and limits of IP-based geolocation

Determining a user's location from their IP address is relatively accurate on Wi‑Fi but often only reliable at the country level on cellular networks. Because of this, ads may not appear consistently even within the same general area.

Especially with third‑party providers, the last octet of the IP can be trimmed, lowering accuracy. After setting targets, it's recommended to test whether ads actually appear in the intended area.

• On Wi‑Fi, city-level locations are relatively accurate, but on mobile networks, country-level accuracy is more reliable.
• External providers may truncate parts of the IP address, reducing location accuracy.

Checks advertisers can perform

1. Check the ad platform's geographic targeting options. Example: in Google Ad Manager's “targeting region” settings, verify whether the desired area (city/postal code) is available. 2. Consider the expected IP accuracy for the area and whether there is a difference between Wi‑Fi and cellular. 3. The most reliable method is to test whether the ads actually appear in that area after you apply the settings.

• Confirm whether the platform's targeting unit supports regional-level targeting
• Consider IP-based location accuracy separately for different environments
• Test ad delivery directly in the target area

Frequently asked questions

What if the platform doesn't let me select our area?

In that case, try targeting the closest unit the platform supports (e.g., a neighboring city or postal code); if needed, contact customer support.

Can low IP accuracy cause ads not to appear?

Yes. In particular, cellular IPs often only provide reliable country-level location, so it's important to test whether ads are actually delivered in your target area.