What does idnes.cz track?
Before any consent, idnes.cz loaded 42 tracking companies and set 34 advertising or analytics cookies.
That's more tracking companies than 100% of the 2,450 sites we scanned.
Scanned October 2, 2026 from Germany, loading www.idnes.cz once and clicking nothing. How we scan
- Tracking companies
- 42
- Tracking cookies
- 34
- Third-party hosts
- 114
- Cookies in total
- 59
Consent banner
The page loaded Didomi, a consent management platform. Everything below was recorded before anyone answered it. 42 tracking companies still loaded while it was unanswered.
Companies contacted before consent
37 of the 62 companies it contacted before consent were advertising companies.
- Google Ads55 requestsAdvertising
pagead2.googlesyndication.com, ep2.adtrafficquality.google, ep1.adtrafficquality.google, securepubads.g.doubleclick.net
- Smart AdServer (Equativ)53 requestsAdvertising
rtb-csync.smartadserver.com, ssb-global.smartadserver.com, apps.smartadserver.com, csync-global.smartadserver.com
- Adform24 requestsAdvertising
adx.adform.net, c1.adform.net, s1.adform.net
- Criteo23 requestsAdvertising
bidder.criteo.com, static.criteo.net, grid-bidder.criteo.com, dis.criteo.com
- Magnite17 requestsAdvertising
fastlane.rubiconproject.com, prebid-server.rubiconproject.com, eus.rubiconproject.com, token.rubiconproject.com
- RichAudience8 requestsAdvertising
shb.richaudience.com, sync.richaudience.com
- RTB House8 requestsAdvertising
prebid-eu.creativecdn.com, invstatic101.creativecdn.com
- Unruly5 requestsAdvertising
sync.1rx.io, sync.targeting.unrulymedia.com
- PubMatic4 requestsAdvertising
image6.pubmatic.com, hbopenbid.pubmatic.com, openbid.pubmatic.com
- ConnectAd3 requestsAdvertising
i.connectad.io
- Xandr (Microsoft)2 requestsAdvertising
ib.adnxs-simple.com, secure.adnxs.com
- Index Exchange2 requestsAdvertising
htlb.casalemedia.com, ssum-sec.casalemedia.com
- OpenX2 requestsAdvertising
eu-u.openx.net, u.openx.net
- Amobee (Turn)2 requestsAdvertising
ad.turn.com
- Quantcast2 requestsAdvertising
cms.quantserve.com
- Epsilon (Conversant)2 requestsAdvertising
equativ-match.dotomi.com, stx-match.dotomi.com
- The Trade Desk1 requestAdvertising
match.adsrvr.org
- MediaMath1 requestAdvertising
sync.mathtag.com
- BidSwitch1 requestAdvertising
x.bidswitch.net
- Beeswax (FreeWheel)1 requestAdvertising
match.prod.bidr.io
- Adition (Virtual Minds)1 requestAdvertising
dsp-cookie.adfarm1.adition.com
- PulsePoint (ContextWeb)1 requestAdvertising
bh.contextweb.com
- Improve Digital (Azerion)1 requestAdvertising
dsp.360yield.com
- ID51 requestAdvertising
id5-sync.com
- Outbrain1 requestAdvertising
b1sync.outbrain.com
- LoopMe1 requestAdvertising
csync.loopme.me
- AdMan Media1 requestAdvertising
cs.admanmedia.com
- Smaato1 requestAdvertising
s.ad.smaato.net
- LiveRamp1 requestAdvertising
id.rlcdn.com
- Sharethrough1 requestAdvertising
match.sharethrough.com
- Opera Ads1 requestAdvertising
t.adx.opera.com
- StackAdapt1 requestAdvertising
sync.srv.stackadapt.com
- Yahoo1 requestAdvertising
ups.analytics.yahoo.com
- DeepIntent1 requestAdvertising
match.deepintent.com
- Button1 requestAdvertising
bttrack.com
- 33Across1 requestAdvertising
ssc-cms.33across.com
- AdRoll1 requestAdvertising
d.adroll.com
- Cxense (Piano)5 requestsAnalytics
cdn.cxense.com, comcluster.cxense.com
- Gemius3 requestsAnalytics
spir.hit.gemius.pl, gacz.hit.gemius.pl
- Google Analytics3 requestsAnalytics
www.googletagmanager.com, region1.google-analytics.com
- Adobe3 requestsAnalytics
sync-tm.everesttech.net
- 6sense1 requestAnalytics
s.company-target.com
Other third parties (content delivery, consent, functional, unclassified)
- 1gr.cz152 requestsUnclassified
1gr.cz, a.1gr.cz, aa.1gr.cz, privacy.1gr.cz
- seznam.cz31 requestsUnclassified
ssp.seznam.cz, h.seznam.cz, cmp.seznam.cz
- r2b2.cz14 requestsUnclassified
delivery.r2b2.cz
- cpex.cz8 requestsUnclassified
cdn.cpex.cz
- imedia.cz6 requestsUnclassified
89.c-ng.imedia.cz, 45.c-ng.imedia.cz, 56.c-oa.imedia.cz, 93.c-ko.imedia.cz
- impuls.cz4 requestsUnclassified
www.impuls.cz
- us.org3 requestsUnclassified
track.us.org
- wp.pl2 requestsUnclassified
ssp.wp.pl
- sdn.cz2 requestsUnclassified
d49-a.sdn.cz
- a-mo.net2 requestsUnclassified
prebid.a-mo.net
- visx.net2 requestsUnclassified
sync.visx.net
- datachine.com1 requestUnclassified
ingest.datachine.com
- adotmob.com1 requestUnclassified
sync.adotmob.com
- iqm.com1 requestUnclassified
pxl.iqm.com
- omnitagjs.com1 requestUnclassified
visitor.omnitagjs.com
- ctnsnet.com1 requestUnclassified
i.ctnsnet.com
- mediagotechnology.com1 requestUnclassified
go.mediagotechnology.com
- Google5 requestsFunctional
accounts.google.com, fonts.gstatic.com, fonts.googleapis.com
- Disqus1 requestFunctional
ssp.disqus.com
- jsDelivr1 requestContent delivery
cdn.jsdelivr.net
Cookies set before consent
The longest-lived tracking cookie it set was CDIPARTNERS, from DeepIntent, lasting about 13 months.
| Cookie | Purpose | Set by | Lasts |
|---|---|---|---|
| _rxuuid | Advertising | 1rx.io (third party) | 12 months |
| _rxuuid | Advertising | targeting.unrulymedia.com (third party) | 12 months |
| ac_r | Advertising | admanmedia.com (third party) | 7 days |
| admtr | Advertising | admanmedia.com (third party) | 7 days |
| C | Advertising | adform.net (third party) | 31 days |
| CDIPARTNERS | Advertising | deepintent.com (third party) | 13 months |
| CDIUSER | Advertising | deepintent.com (third party) | 13 months |
| csync | Advertising | smartadserver.com (third party) | 30 days |
| cto_bundle | Advertising | criteo.com (third party) | 13 months |
| everest_g_v2 | Advertising | everesttech.net (third party) | 12 months |
| KADUSERCOOKIE | Advertising | pubmatic.com (third party) | 12 months |
| OAU | Advertising | opera.com (third party) | 12 months |
| pb_rtb_ev_part | Advertising | contextweb.com (third party) | 12 months |
| pid | Advertising | smartadserver.com (third party) | 3 months |
| sa-user-id | Advertising | sync.srv.stackadapt.com (third party) | 12 months |
| sa-user-id | Advertising | srv.stackadapt.com (third party) | 12 months |
| sa-user-id-v2 | Advertising | sync.srv.stackadapt.com (third party) | 12 months |
| sa-user-id-v2 | Advertising | srv.stackadapt.com (third party) | 12 months |
| sa-user-id-v4 | Advertising | sync.srv.stackadapt.com (third party) | 12 months |
| sa-user-id-v4 | Advertising | srv.stackadapt.com (third party) | 12 months |
| TestIfCookieP | Advertising | smartadserver.com (third party) | 13 months |
| tuuid | Advertising | company-target.com (third party) | 13 months |
| tuuid_lu | Advertising | company-target.com (third party) | 13 months |
| uid | Advertising | adotmob.com (third party) | 6 months |
| uid | Advertising | criteo.com (third party) | 13 months |
| uid | Advertising | adform.net (third party) | 2 months |
| uid | Advertising | turn.com (third party) | 6 months |
| uuid | Advertising | adotmob.com (third party) | 6 months |
| uuid | Advertising | mathtag.com (third party) | 13 months |
| uuid | Advertising | visx.net (third party) | 12 months |
| viewer_token | Advertising | csync.loopme.me (third party) | 3 months |
| VP | Advertising | contextweb.com (third party) | 12 months |
| Gdynp | Analytics | hit.gemius.pl (third party) | 13 months |
| Gtest | Analytics | hit.gemius.pl (third party) | 7 days |
| _mmid | Unclassified | idnes.cz | 12 months |
| _webid | Unclassified | idnes.cz | 12 months |
| _webid2 | Unclassified | idnes.cz | 6 days |
| adsCMP | Unclassified | idnes.cz | 12 months |
| cid_e6ef8ce2791e437ca09d983c0bd0c3d4 | Unclassified | ctnsnet.com (third party) | 12 months |
| dCMP | Unclassified | idnes.cz | 13 months |
| equativ | Unclassified | pxl.iqm.com (third party) | 30 days |
| euctmp | Unclassified | idnes.cz | Session |
| iqm.retarget.uid | Unclassified | pxl.iqm.com (third party) | 15 days |
| kolbda | Unclassified | idnes.cz | Session |
| mafra_ccheck | Unclassified | idnes.cz | 7 days |
| padouchtest | Unclassified | idnes.cz | 1 day |
| partners | Unclassified | adotmob.com (third party) | 6 months |
| personalizace | Unclassified | idnes.cz | 12 months |
| promo-day | Unclassified | idnes.cz | 31 days |
| source | Unclassified | idnes.cz | Session |
| sso | Unclassified | idnes.cz | 12 months |
| webidsync | Unclassified | idnes.cz | 1 day |
| _pctx | Functional | idnes.cz | 13 months |
| didomi_token | Functional | www.idnes.cz | 12 months |
| g_state | Functional | idnes.cz | 6 months |
| INGRESSCOOKIE | Functional | bh.contextweb.com (third party) | Session |
| KTPCACOOKIE | Functional | pubmatic.com (third party) | 1 day |
| receive-cookie-deprecation | Functional | hit.gemius.pl (third party) | 13 months |
| __eoi | Necessary | idnes.cz | 6 months |
The page also wrote 9 keys to local storage, which works like a cookie but isn't sent with requests.
Understanding this page
- How to see which cookies and trackers a website loads
A hands-on walkthrough for checking what a site sets before you've clicked anything, using Chrome and Firefox's built-in tools, plus how CookieTosser automates the same check every month.
- What counts as valid cookie consent in the EU
The rules that actually govern cookie banners — the ePrivacy Directive, the GDPR consent standard, the Planet49 ruling, the strictly-necessary exemption, and what "reject" has to offer compared with "accept.
- Consent management platforms explained
What a CMP banner is actually doing behind the scenes, how the IAB's TCF standard and Google's Consent Mode v2 fit in, and why a banner being present is no guarantee that nothing loads before you answer it.