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Reverse AdSense Lookup

Find the AdSense publisher IDs recorded on a domain, or the sites recorded with a publisher ID, in our monthly index.

Try

No result yet. Opening this page does not run a lookup.

Use a bare domain such as example.com, or an ID that starts with pub-. Results open on their own page.

What opens after you submit

  • From a domain Every publisher ID recorded on it. Pick one to see how many sites share it.
  • From a pub- ID The sites recorded with that ID, with estimated monthly visits and the data month.
  • What you can open Rows past your plan’s preview stay locked. A site without an estimate shows a blank, never zero.

How the lookup works

Enter a domain or a publisher ID. The lookup reads our monthly index and opens a result page for what you entered.

  1. Enter a domain or an ID

    Type a domain such as example.com, or a publisher ID such as pub-XXXXXXXXXXXXXXXX. A full URL works too.

  2. We read the monthly index

    The index links sites to the publisher IDs seen in their ad code. The lookup reads what is stored, so it answers the same way whether the site is up or down.

  3. A result page opens

    A domain opens /adsense/example.com with every ID recorded on it. An ID opens /adsense/pub-XXXXXXXXXXXXXXXX with the sites recorded with it.

  4. You read the sites

    Each site comes with estimated monthly visits for the data month, its categories and its registration date.

Ways in: a domain or a publisher ID
2
Digits after pub- in a publisher ID
16
Rows per page of a list
60
Day a new data month usually opens
15th

What a lookup returns

A domain lookup starts with the IDs recorded on the domain. A publisher ID lookup goes straight to its sites. Both pages share these parts.

  • Publisher IDs on a domain

    Every ID the index records on the domain. Pick one to switch the list of sites.

    pub-XXXXXXXXXXXXXXXX

  • Active marker

    Marks an ID that the upstream record saw on the site in the last 30 days.

  • Observed domains

    How many sites the index records with the selected ID. The count covers the whole list.

  • With visits and combined visits

    How many of those sites have estimated visits above zero, and their visits added together.

  • Site rows

    Rank, name, categories, visits in the data month and the month before, and registration date.

  • Data month

    The month the list describes. Earlier months open as far back as your plan allows.

How a site joins a publisher’s list

Every site that shows ads for one AdSense account carries that account’s publisher ID in its ad code. The index records where the ID appears.

  1. Served ad code

    The upstream index links a site to an ID when the ID shows up in the ad code the site serves publicly, or in related public traces of that code.

  2. A second site, same ID

    Another site serving the same ID joins the same list. The result shows both under that ID for the data month.

  3. An ads.txt line on its own

    A seller line in ads.txt does not put a site on a list. Such lines can be copied, resold or left in place after a change.

  4. The form you enter

    Page code writes ca-pub- and results write pub-. Both name the same account. Enter the pub- form in the lookup.

Reading a result

A domain lookup opens the page below. A publisher ID opens the same list under a header with the ID, its data month and the date it was added to PubMonitor.

  1. Domain and ID count

    The domain you entered, after cleanup, and how many publisher IDs the index records on it.

  2. Publisher ID chips

    One chip per ID. Active IDs come first, then IDs with more sites. The selected chip decides every figure below it.

  3. Next links

    Traffic for the domain opens its traffic page. Publisher page opens the selected ID on a page of its own.

  4. Portfolio snapshot

    Observed domains, With visits and Combined estimated monthly visits for the selected ID, labeled with the data month.

  5. Count line and controls

    The count line says how many of the observed sites the list shows. The month row switches data month, and the sort switches between visits, growth and registration.

  6. Site rows

    Rank, name, categories, current visits with the change on the month before, previous visits and registration date. A dash stands for no estimate above zero.

  7. Locked rows

    Rows past your plan’s limit keep their rank and hide the site. The card under the list says how many names the next plan shows.

Result states

The result page, or the workbench above, shows one of these. Each calls for a different next step.

Result What it means What to do next
AdSense publisher IDs for example.com
The domain is in the index with at least one publisher ID. The chips list them, and the list below shows the sites recorded with the selected one.
Pick each chip in turn, then open Traffic for the domain to see its visits month by month.
Publisher portfolio
The publisher ID is in the index. The header shows the data month and the date the ID was added to PubMonitor.
Open a site from its row, or switch the data month to see how the list looked before.
No publisher ID linked yet
The domain is in the index, but none of its publisher IDs is linked to it yet.
Read the ID from the live site with the Publisher ID Finder. The page offers the same step as a button.
Website not in the index
We have no AdSense publisher ID on record for the domain. No match does not show that a site has never used AdSense.
Check what the homepage carries today in the AdSense Checker.
Publisher ID not found
Either the ID has no observed sites in our index yet, or it is not pub- followed by 16 digits. The page tells you which of the two applies.
Copy the ID again from the ad code or the ads.txt file, then look it up once more.
No observed domains for this month
The ID is known, but no site was recorded with it in the selected data month.
Another month may still show sites for this ID. Pick one from the month row.
Sign in to reveal
A row past your plan’s limit for named sites. It keeps its rank and hides the site.
Sign in for 25 named sites per list, or compare plan limits.
Sign in free for more history.
The month you picked is older than your plan opens. Signed-in plans see This month is locked on your plan instead.
Return to a recent month, or see how many months each plan opens.
New unique-target previews are paused
New domains and publisher IDs count toward a rolling fair-use limit. The pause appears on the workbench above.
Sign in for a separate budget, or wait and try again later.
Check the input and try again.
The entry was an IP address, a name without a dot, a reserved ending such as .local, an ID in the ca-pub- form or an all-zero ID.
Enter a domain such as example.com, or an ID such as pub-XXXXXXXXXXXXXXXX.

Where the index comes from

Every answer comes from stored monthly data. Each result page names the month it describes.

Publisher indexMonthly
Built upstream from publicly served pages and refreshed each month. It links each site to the publisher IDs seen in its ad code.
Data monthOn every page
The month a list and its visit figures describe. It dates the dataset as a whole, so it does not tell you when a site was first or last seen with an ID.
Estimated visitsUpstream model
Monthly visit estimates from an upstream data supplier, shown as delivered. A site without an estimate above zero shows a dash.
Categories and descriptions
Assigned upstream from each site’s public content. A site can sit in more than one category.
Added to PubMonitor
On a publisher page, the date the ID entered our index. The account behind it can be much older.

The index lists websites observed with an AdSense publisher ID. A site we have not recorded opens the Website not in the index page, whatever it runs today.

What can change a result

Two lookups of the same domain or ID can differ. These are the usual reasons.

A new data month
A new month usually opens around the 15th and covers the month before. Lists, counts and visits move to it together.
Code on the site
A site that drops an ID, adds a partner’s ID or moves to another account shows the change in a later month.
The month you pick
An older month shows the list as it was recorded then. A site can sit on the list one month and leave it the next.
The sort
Visits, growth and registration order the same sites differently, so each site’s rank follows the sort you choose.

Named sites and months by plan

Every plan sees the same list and the same counts. Plans differ in how many sites carry a name and how many data months open.

Signed out10 names · 3 months
The first 10 rows of each list show site names. The 3 latest data months open.
Free account25 names · 6 months
The first 25 rows of each list show site names. The 6 latest data months open.
Pro100 names · 36 months
Every site on lists of up to 50 sites, and the first 100 on longer lists. 36 data months open.
Business1.0K names · 60 months
The first 1.0K sites on long lists and 60 data months.

Rows past the limit keep their rank and show a link to reveal them. The card under the list says how many names the next plan shows and, where it can be counted, how many visits the hidden rows add up to.

What to enter

One field takes either a domain or a publisher ID. The lookup decides which one you typed.

Accepted

  • example.com

    A bare domain opens the list of IDs recorded on it.

  • blog.example.com

    A subdomain is looked up as a site of its own.

  • pub-XXXXXXXXXXXXXXXX

    pub- and the 16 digits. An ID of another length opens a page that asks you to check it.

Changed before the lookup

  • https://www.example.com/post?id=7becomesexample.com

    Scheme, www, path and query are removed.

  • PUB-XXXXXXXXXXXXXXXXbecomespub-XXXXXXXXXXXXXXXX

    Letters are lowercased, in IDs and domains alike.

  • example.com:8080becomesexample.com

    Port numbers are dropped. Names in other scripts are converted to their ASCII form.

Not accepted

  • ca-pub-XXXXXXXXXXXXXXXX

    Drop the ca- prefix and enter the pub- form.

  • pub-0000000000000000

    An all-zero ID is a placeholder. No account uses it.

  • 192.0.2.10

    IP addresses are not looked up.

  • intranet.local

    Names without a dot and reserved endings such as .local, .test and .internal are not looked up.

Example lookups

Four entries, four different result pages. Each example uses a placeholder domain or ID.

A domain with one ID

example.com
You see
AdSense publisher IDs for example.com with a single chip, then Portfolio snapshot and the list of sites using that ID.
What it means
The index records one publisher ID on the domain. The list shows the other sites recorded with it in the data month.
Next
Open Traffic for example.com, or check the live homepage in the AdSense Checker.

A domain with several IDs

blog.example.com
You see
Several chips. The first one is selected: Active IDs come first, then IDs with more sites.
What it means
More than one account’s code was recorded on the site. Ad partners, revenue-share deals and earlier owners can all leave an ID behind.
Next
Pick each chip and compare the lists. The Active marker shows which IDs were seen on the site recently.

An ID with a long list

pub-XXXXXXXXXXXXXXXX
You see
Publisher portfolio with the data month. Signed out, the first 10 rows name their sites, later rows say Sign in to reveal, and a card under the list offers more names.
What it means
The index records more sites with this ID than your plan names. The counts in the snapshot still cover every site.
Next
Sign in for 25 named sites per list, or compare plan limits on the pricing page.

A domain outside the index

example.net
You see
Website not in the index, with a button that finds the ID on the live site.
What it means
We hold no publisher ID record for the domain. The site may still run AdSense code that the index has not recorded.
Next
Read the live homepage with the AdSense Checker or the Publisher ID Finder.

Checks before you rely on a shared ID

A shared ID is a lead. These checks show how much weight it can carry.

  1. The ID is on the live page today

    Run the domain through the AdSense Checker. Code in today’s HTML is newer evidence than a monthly record.

  2. All 16 digits match

    Compare the IDs digit by digit. Two IDs that differ in one digit belong to two accounts.

  3. The ID is Active on each site

    Active means the upstream record saw the ID on that site in the last 30 days. An ID without it may be an old trace.

  4. The sites overlap in time

    Switch the data month. Sites that carry the ID in the same months make a closer pair than sites seen years apart.

  5. The site’s ads.txt names the ID

    Paste the site’s ads.txt into the Publisher ID Finder. A matching line is the site’s own declaration about who sells its ads.

  6. The traffic pages fit together

    Open each site’s traffic page and compare categories, top regions and visit trends before you draw a conclusion.

Questions this lookup leaves to other tools

The index answers which sites were recorded with which IDs. These questions need a different source.

Question Why the lookup cannot answer it Where to look
Who owns these sites?
Ad networks, agencies, revenue-share partners and site sales can all put one ID on many sites. A shared publisher ID is an observed monetization relationship, not proof of common ownership.
WHOIS on each site’s traffic page, and the contact details the sites publish.
Is the ID on the site today?
The index is monthly, and a site can change its code after the data month.
AdSense Checker reads the homepage at the moment you run it.
How much does the account earn?
Earnings belong to the account holder and are never public.
Website Earning Checker models display-ad revenue for one site from its traffic.
Is the account in good standing?
Account status, policy notices and payment holds are private to the account holder.
AdSense Ban Checker shows how a site answers a public request.

Reverse AdSense Lookup and related tools

Four tools answer questions about publisher IDs and the sites behind them. Pick by the question you have.

Reverse AdSense Lookup compared with related tools
Reverse AdSense Lookup This tool AdSense Checker Publisher ID Finder Website Traffic Checker
Answers Which publisher IDs the index records on a domain, and which sites share each one Which publisher IDs a homepage carries right now Which IDs appear on a page or in source you paste About how many monthly visits a domain gets
You enter A domain or a pub- ID A domain A domain, or pasted HTML or ads.txt text A domain
It reads Our monthly index The live homepage, with fallback records One live page, or your text in your browser Our monthly index and its visit estimates
Result A page of IDs and sites with visits and the data month IDs with source, date and index match ID candidates with the text around them The domain’s traffic page

Who runs a reverse lookup

An AdSense reverse lookup turns one ID into a list of sites. That list is useful at a few specific moments.

  • Researchers

    Map the sites recorded with an ID, then read each one’s traffic, categories and registration date.

  • Site buyers

    See which other sites a seller’s ID appears on before you ask about the ad setup.

  • Publishers

    Look up your own ID. An unfamiliar site on the list can mean someone copied your ad code.

  • Ad operations teams

    Check which IDs the index records on the properties you manage, one domain per lookup.

Terms used on the result page

The words on the result page, in the order they appear.

Publisher ID
The number that identifies an AdSense account, written pub- followed by 16 digits.
Active
An ID the upstream record saw on the site in the last 30 days.
Portfolio
The sites the index records with one publisher ID in one data month.
Observed domains
How many sites the index records with the selected ID in the data month.
With visits
Sites on the list with estimated visits above zero that month.
Combined estimated monthly visits
The estimated visits of every site on the list, added together.
Data month
The month a list and its figures describe. It opens around the 15th of the month after.
Leaderboard months
The data months your plan opens on lists and portfolios.
Locked row
A row past your plan’s limit. It keeps its rank and hides the site name.

Common questions

What is a reverse pub ID lookup?

It starts from an AdSense publisher ID and lists the sites recorded with it. This page works both ways: enter a domain to see the IDs recorded on it, or enter a pub- ID to go straight to its sites.

Does a shared publisher ID mean the sites have one owner?

It means the index saw the same ID in the ad code of each site. Agencies, ad partners, revenue-share deals and site sales all produce shared IDs, so read it as a lead and run the checks above.

Why does my domain show more than one ID?

Ad partners, revenue-share setups and earlier account changes can each leave an ID in the code. The chips list every ID the index records on the domain, Active ones first.

Why is a site I know runs AdSense missing?

The index holds sites observed with a publisher ID in the code they serve. A site we have not recorded, or one that added its code after the data month, is missing until a later month picks it up.

How current is the list?

It describes the data month shown on the page. A new month usually opens around the 15th and covers the month before. To see what a site carries today, run the AdSense Checker.

Why do some rows show a dash for visits?

A dash means the site has no estimate above zero for that month. Lists print a dash in place of 0, because some stored zeros are missing estimates.

Does a lookup count toward a limit?

Each new domain or publisher ID you open counts toward a rolling fair-use limit, and opening the same one again does not. A domain lookup and that domain’s traffic page share one count.

Can I share a result?

Yes. Every result has its own address, such as /adsense/example.com or /adsense/pub-XXXXXXXXXXXXXXXX. Anyone who opens it sees the page under their own plan.

Can an AI assistant run this lookup?

Yes, through the PubMonitor MCP server. A free account can create a key, and the publisher tools return the same lists within your plan’s limits.

Look up another domain or ID

Enter a domain or a pub- ID in the lookup above. The result opens on its own page.

Look up a domain or ID