El Mundo
https://www.elmundo.es · measured 2026-10-12 from GitHub servers in the US · ES
This site mainly serves readers in Spain, but it was measured from GitHub servers in the US. Sites often adapt what loads, including consent walls, to the visitor's country, so these figures may differ from what a local reader sees.
23tracking services contacted · band C
47third-party domains
255third-party requests
4.0 MBfrom third parties, 47% of 8.5 MB transferred (1.3 MB from tracking services)
16third-party cookies (64 in total)
What we measured
The page attempted 3 request(s) to private or loopback addresses. TraceGuard blocked them.
During a 12-second window with no user interaction, the page made 255 requests to 47 third-party domains (median of 3 passes).
Of 8.5 MB transferred in that window (compressed responses that finished loading), 4.0 MB (47%) came from third-party domains, 1.3 MB of it from services classified as tracking (92 requests).
23 third-party services classified as advertising, analytics, social or audience measurement were contacted before any interaction: adtrafficquality.google (Google, advertising), amazon-adsystem.com (Amazon, advertising), creativecdn.com (RTB House, advertising), criteo.com (Criteo, advertising), criteo.net (Criteo, advertising), crwdcntrl.net (Lotame, advertising), cxense.com (Piano (Cxense), advertising), doubleclick.net (Google, advertising), ebxcdn.com (Unidentified operator, analytics), facebook.com (Meta, social).
16 cookies were set by third-party domains (64 cookies in total).
The main document response did not include a Strict-Transport-Security header.
The main document response did not include a Content-Security-Policy header or meta tag.
Comparison with last week
No stable change in tracking services or third-party domains.
What each tracking service did on your computer
Counted in the browser that loaded this page, before any interaction: 23 tracking services ran 40 scripts, made 90 requests in total and set 6 cookies (6 that stay after you close the browser). We see that these things happened, not what was sent or what the service does with it afterwards. What these mean.
| Service | Operator and type | In your browser |
|---|---|---|
doubleclick.net | Google Advertising |
ran 8 scripts in the browser; made 8 background requests to send or fetch data; loaded 4 embedded frames; loaded 1 other resource (styles, fonts, media); set 1 cookie (1 that stays after you close the browser, the longest lasting about 400 days). |
cxense.com | Piano (Cxense) Advertising |
ran 11 scripts in the browser; made 1 image request (often tiny “pixels”); set 1 cookie (1 that stays after you close the browser, the longest lasting about 365 days). |
taboola.com | Taboola Advertising |
ran 1 script in the browser; made 5 image requests (often tiny “pixels”); loaded 1 embedded frame. |
googleadservices.com | Google Advertising |
made 3 image requests (often tiny “pixels”); made 3 background requests to send or fetch data. |
adtrafficquality.google | Google Advertising |
ran 1 script in the browser; made 2 image requests (often tiny “pixels”); made 1 background request to send or fetch data; loaded 1 embedded frame. |
amazon-adsystem.com | Amazon Advertising |
ran 2 scripts in the browser; made 2 background requests to send or fetch data; loaded 1 embedded frame. |
newsroom.bi | Marfeel Analytics |
made 5 background requests to send or fetch data. |
criteo.com | Criteo Advertising |
made 1 background request to send or fetch data; loaded 1 embedded frame; set 2 cookies (2 that stay after you close the browser, the longest lasting about 390 days). |
crwdcntrl.net | Lotame Advertising |
ran 1 script in the browser; made 1 background request to send or fetch data; set 2 cookies (2 that stay after you close the browser, the longest lasting about 270 days). |
facebook.net | Meta Social networks |
ran 2 scripts in the browser; made 1 background request to send or fetch data. |
google-analytics.com | Google Analytics |
ran 1 script in the browser; made 2 background requests to send or fetch data. |
googlesyndication.com | Google Advertising |
ran 1 script in the browser; made 1 background request to send or fetch data; loaded 1 embedded frame. |
mrf.io | Marfeel Analytics |
ran 3 scripts in the browser. |
ebxcdn.com | Unidentified operator Analytics |
ran 1 script in the browser; made 1 background request to send or fetch data. |
id5-sync.com | ID5 Advertising |
ran 1 script in the browser; made 1 background request to send or fetch data. |
pubmatic.com | PubMatic Advertising |
ran 1 script in the browser; made 1 background request to send or fetch data. |
creativecdn.com | RTB House Advertising |
ran 1 script in the browser. |
criteo.net | Criteo Advertising |
ran 1 script in the browser. |
facebook.com | Meta Social networks |
made 1 background request to send or fetch data. |
imasdk.googleapis.com | Google Advertising |
ran 1 script in the browser. |
openxcdn.net | OpenX Advertising |
ran 1 script in the browser. |
permutive.com | Permutive Advertising |
ran 1 script in the browser. |
scorecardresearch.com | Comscore Audience measurement |
ran 1 script in the browser. |
Companies behind the tracking services
Operators as named in our list; subsidiaries are not merged. See how many sites each operator reaches.
- Google — adtrafficquality.google, doubleclick.net, google-analytics.com, googleadservices.com, googlesyndication.com, imasdk.googleapis.com (72% of the measured sites)
- Amazon — amazon-adsystem.com (54% of the measured sites)
- Comscore — scorecardresearch.com (46% of the measured sites)
- PubMatic — pubmatic.com (38% of the measured sites)
- Criteo — criteo.com, criteo.net (36% of the measured sites)
- OpenX — openxcdn.net (36% of the measured sites)
- RTB House — creativecdn.com (36% of the measured sites)
- ID5 — id5-sync.com (31% of the measured sites)
- Permutive — permutive.com (31% of the measured sites)
- Lotame — crwdcntrl.net (28% of the measured sites)
- Marfeel — mrf.io, newsroom.bi (28% of the measured sites)
- Taboola — taboola.com (28% of the measured sites)
- Meta — facebook.com, facebook.net (21% of the measured sites)
- Piano (Cxense) — cxense.com (18% of the measured sites)
- Unidentified operator — ebxcdn.com (18% of the measured sites)
Third-party domains
Only changes seen in most passes count as stable. “Unclassified” means the domain is not in our list, not that it is harmless.
| Domain | Service | Category | Passes seen |
|---|---|---|---|
| adtrafficquality.google | Advertising | 3/3 | |
| amazon-adsystem.com | Amazon | Advertising | 3/3 |
| creativecdn.com | RTB House | Advertising | 3/3 |
| criteo.com | Criteo | Advertising | 3/3 |
| criteo.net | Criteo | Advertising | 3/3 |
| crwdcntrl.net | Lotame | Advertising | 3/3 |
| cxense.com | Piano (Cxense) | Advertising | 3/3 |
| doubleclick.net | Advertising | 3/3 | |
| ebxcdn.com | Unidentified operator | Analytics | 3/3 |
| facebook.com | Meta | Social networks | 3/3 |
| facebook.net | Meta | Social networks | 3/3 |
| google-analytics.com | Analytics | 3/3 | |
| googleadservices.com | Advertising | 3/3 | |
| googleapis.com | Advertising | 3/3 | |
| googlesyndication.com | Advertising | 3/3 | |
| googletagmanager.com | Tag managers | 3/3 | |
| id5-sync.com | ID5 | Advertising | 3/3 |
| mrf.io | Marfeel | Analytics | 3/3 |
| newsroom.bi | Marfeel | Analytics | 3/3 |
| openxcdn.net | OpenX | Advertising | 3/3 |
| permutive.com | Permutive | Advertising | 3/3 |
| piano.io | Piano | Paywalls and subscriptions | 3/3 |
| pubmatic.com | PubMatic | Advertising | 3/3 |
| scorecardresearch.com | Comscore | Audience measurement | 3/3 |
| taboola.com | Taboola | Advertising | 3/3 |
| tinypass.com | Piano | Paywalls and subscriptions | 3/3 |
| tiqcdn.com | Tealium | Tag managers | 3/3 |
| cloudflare.com | Unclassified | 3/3 | |
| fusion-platform.com | Unclassified | 3/3 | |
| google.com | Unclassified | 3/3 | |
| gstatic.com | Unclassified | 3/3 | |
| im-apps.net | Unclassified | 3/3 | |
| jquery.com | Unclassified | 3/3 | |
| jsdelivr.net | Unclassified | 3/3 | |
| marca.com | Unclassified | 3/3 | |
| mgaru.dev | Unclassified | 3/3 | |
| mygaru.com | Unclassified | 3/3 | |
| ocmtag.com | Unclassified | 3/3 | |
| ocmthood.com | Unclassified | 3/3 | |
| privacy-center.org | Unclassified | 3/3 | |
| sensic.net | Unclassified | 3/3 | |
| spadsync.com | Unclassified | 3/3 | |
| tradedoubler.com | Unclassified | 3/3 | |
| visualwebsiteoptimizer.com | Unclassified | 3/3 | |
| yahoo.com | Unclassified | 3/3 | |
| youtube.com | Unclassified | 3/3 | |
| zeotap.com | Unclassified | 3/3 |
Evolution
Tracking services contacted each week. Only weeks measured from the same place are plotted together.
History
| Date | Measured from | Status | Tracking services |
|---|---|---|---|
| 2026-10-09 | GitHub servers in the US | ok | 23 |
| 2026-10-12 | GitHub servers in the US | ok | 23 |
Raw report: JSON