Why is PayPal connecting to adnxs.com and paypal.d1.sc.omtrdc.net?

Martin Brinkmann
May 25, 2015
Updated • May 25, 2015

Back in 2010 I noticed that PayPal was loading content from paypal.112.2o7.net during connection to the site which was worrying at that time as there was no indication why a secure site would do this.

Most financial sites, online banks for instance, take security and privacy of their customers serious by loading contents only from company-owned domains.

The connection that PayPal makes to 2o7.net turned out to be to servers operated by a company called Omniture which was acquired by Adobe Systems in 2009. Omniture, an online marketing and web analytics business, was later integrated into Adobe Marketing Cloud.

If you connect to PayPal.com today, you will notice additional third-party requests that the site makes. One of the easier ways to verify this is to use network monitors that are integrated into the developer tools of most browsers.

In Firefox and Google Chrome, hit f12, switch to network and load the PayPal website afterwards.

paypal third-party connections

PayPal.com makes several connections to third-party servers:

  • akamaihd.net
  • secure.adnxs.com
  • paypal.d1.sc.omtrdc.net
  • www.youtube.com
  • s.ytimg.com
  • stats.g.doubleclick.net

Lets find out why those connections are made.



  • Domain name: akamaihd.net
  • Registrar:  Tucows, INC.
  • Registrant Organization: Akamai Technologies, inc.

Akamai Technologies is a US-based company that is probably best known for its content delivery network (CDN). It is a cloud services provider that operates one of the world's latest distributed computing platforms.




  • Domain name: adnxs.com
  • Registrar:  MarkMonitor, INC.
  • Registrant Organization: AppNexus Inc

Secure.adnxs.com and adnxs.com are run by AppNexus, an Internet advertising company that offers a variety of services including an advertisement exchange, data aggregation and ad server.

It is not entirely clear which AppNexus services PayPal uses. A "sess" cookie is stored on the user system which acts as a test cookie to find out whether cookies can be placed on user systems.

According to the company's cookies information and platform policy page the following information may be tracked by its cookies:

  • Unique random identifier to distinguish devices and browsers.
  • The ads shown in the browser and interaction with ads.
  • The IP address.
  • The pages visited by the browser.

The service allows customers to match cookie data (cookie matching) with data collected by other services.



  • Domain name: cmtrdc.net
  • Registrar: CSC Corporate Domains, INC.
  • Registrant Organization: Adobe Systems Incorporated

Adobe collections information with its analytics and on-site personalization service (the tech which came from the Omniture business).

Adobe notes on the company's analytics privacy page:

If you look at your cookie settings in your browser, you may notice cookies from 2o7.net and omtrdc.net domains. These are the cookies Adobe uses to collect the information described above. Most Internet browsers classify these as "third-party" cookies because they are not set by the website you are visiting. Companies using our services have the choice of using these Adobe cookies or using their own cookies (often called "first-party" cookies).

The same page reveals the type of information that Adobe's analytics service collects:

  • The referring url, the url that you visit and the time spent on them.
  • Searches performed on the company website and searches that led to the company website.
  • Browser and device information including browser, operating system, connection speed and display settings.
  • The device's IP address
  • Information you provide on company websites.
  • Ad clicks.
  • Purchases or items added to shopping carts.
  • Social network profile information.

www.youtube.com and s.ytimg.com


  • Domain name: youtube.com and ytimg.com
  • Registrar: MarkMonitor, Inc.
  • Registrant Organization: Google Inc.


Used to play videos from the video hosting site YouTube.



  • Domain name: doubleclick.net
  • Registrar: MarkMonitor, Inc.
  • Registrant Organization: Google Inc.


This is not loaded all the time it seems. Doubleclick is operated by Google and this particular connection powers a specific version of Google Analytics with Display Advertising.

The core difference between it and the regular Google Analytics script is that it supports display advertising and remarketing tracking out of the box.

The code itself behaves similar to Google Analytics code.

What happens if you block these third-party connections?

If you block all third-party requests when connecting to Paypal.com (using uMatrix for instance), you can still use the service as before.

Since all third-party connections are not powering core functionality but only analytics, ads, content distribution and videos, it is safe to block these connections to improve privacy and speed up the connection to the PayPal website.

Why is PayPal connecting to adnxs.com and paypal.d1.sc.omtrdc.net?
Article Name
Why is PayPal connecting to adnxs.com and paypal.d1.sc.omtrdc.net?
PayPal connects to several third-party domains when you load the site in your browser of choice. Find out why those connections are made.

Tutorials & Tips

Previous Post: «
Next Post: «


  1. ilev said on August 4, 2012 at 7:53 pm

    Doesn’t Windows 8 know that www. or http:// are passe ?

    1. Martin Brinkmann said on August 4, 2012 at 7:57 pm

      Well it is a bit difficulty to distinguish between name.com domains and files for instance.

    2. Leonidas Burton said on September 4, 2023 at 4:51 am

      I know a service made by google that is similar to Google bookmarks.

  2. VioletMoon said on August 16, 2023 at 5:26 pm

    @Ashwin–Thankful you delighted my comment; who knows how many “gamers” would have disagreed!

  3. Karl said on August 17, 2023 at 10:36 pm


    The comments section under this very article (3 comments) is identical to the comments section found under the following article:

    Not sure what the issue is, but have seen this issue under some other articles recently but did not report it back then.

  4. Anonymous said on August 25, 2023 at 11:44 am

    Omg a badge!!!
    Some tangible reward lmao.

    It sucks that redditors are going to love the fuck out of it too.

  5. Scroogled said on August 25, 2023 at 10:57 pm

    With the cloud, there is no such thing as unlimited storage or privacy. Stop relying on these tech scums. Purchase your own hardware and develop your own solutions.

    1. lollmaoeven said on August 27, 2023 at 6:24 am

      This is a certified reddit cringe moment. Hilarious how the article’s author tries to dress it up like it’s anything more than a png for doing the reddit corporation’s moderation work for free (or for bribes from companies and political groups)

  6. El Duderino said on August 25, 2023 at 11:14 pm

    Almost al unlmited services have a real limit.

    And this comment is written on the dropbox article from August 25, 2023.

  7. John G. said on August 26, 2023 at 1:29 am

    First comment > @ilev said on August 4, 2012 at 7:53 pm

    For the God’s sake, fix the comments soon please! :[

  8. Kalmly said on August 26, 2023 at 4:42 pm

    Yes. Please. Fix the comments.

  9. Kim Schmidt said on September 3, 2023 at 3:42 pm

    With Google Chrome, it’s only been 1,500 for some time now.

    Anyone who wants to force me in such a way into buying something that I can get elsewhere for free will certainly never see a single dime from my side. I don’t even know how stupid their marketing department is to impose these limits on users instead of offering a valuable product to the paying faction. But they don’t. Even if you pay, you get something that is also available for free elsewhere.

    The algorithm has also become less and less savvy in terms of e.g. English/German translations. It used to be that the bot could sort of sense what you were trying to say and put it into different colloquialisms, which was even fun because it was like, “I know what you’re trying to say here, how about…” Now it’s in parts too stupid to translate the simplest sentences correctly, and the suggestions it makes are at times as moronic as those made by Google Translations.

    If this is a deep-learning AI that learns from users’ translations and the phrases they choose most often – which, by the way, is a valuable, moneys worthwhile contribution of every free user to this project: They invest their time and texts, thereby providing the necessary data for the AI to do the thing as nicely as they brag about it in the first place – alas, the more unprofessional users discovered the translator, the worse the language of this deep-learning bot has become, the greater the aggregate of linguistically illiterate users has become, and the worse the language of this deep-learning bot has become, as it now learns the drivel of every Tom, Dick and Harry out there, which is why I now get their Mickey Mouse language as suggestions: the inane language of people who can barely spell the alphabet, it seems.

    And as a thank you for our time and effort in helping them and their AI learn, they’ve lowered the limit from what was once 5,000 to now 1,500…? A big “fuck off” from here for that! Not a brass farthing from me for this attitude and behaviour, not in a hundred years.

Leave a Reply

Check the box to consent to your data being stored in line with the guidelines set out in our privacy policy

We love comments and welcome thoughtful and civilized discussion. Rudeness and personal attacks will not be tolerated. Please stay on-topic.
Please note that your comment may not appear immediately after you post it.