What does hatena.ne.jp track?
Before any consent, hatena.ne.jp loaded 19 tracking companies and set 28 advertising or analytics cookies.
That's more tracking companies than 97% of the 2,450 sites we scanned.
Scanned October 2, 2026 from Germany, loading www.hatena.ne.jp once and clicking nothing. How we scan
- Tracking companies
- 19
- Tracking cookies
- 28
- Third-party hosts
- 62
- Cookies in total
- 34
Consent banner
No known consent management platform was detected on the page.
Companies contacted before consent
18 of the 31 companies it contacted before consent were advertising companies.
- Google Ads32 requestsAdvertising
pagead2.googlesyndication.com, ad.doubleclick.net, securepubads.g.doubleclick.net, ep2.adtrafficquality.google
- Criteo9 requestsAdvertising
ssp-sync.criteo.com, gum.criteo.com, grid-bidder.criteo.com
- Blockthrough7 requestsAdvertising
api.btloader.com, btloader.com, cdn.btloader.com, cdn.api.btloader.com
- Supership7 requestsAdvertising
i.socdm.com, d.socdm.com, tg.socdm.com
- Xandr (Microsoft)5 requestsAdvertising
ib.adnxs.com, acdn.adnxs.com, secure.adnxs.com
- CyberCommunications (Impact)5 requestsAdvertising
y.one.impact-ad.jp, penta.a.one.impact-ad.jp
- Magnite4 requestsAdvertising
eus.rubiconproject.com, fastlane.rubiconproject.com, token.rubiconproject.com
- PubMatic4 requestsAdvertising
ut.pubmatic.com, hbopenbid.pubmatic.com, ads.pubmatic.com
- OpenX2 requestsAdvertising
rtb.openx.net, hatena-d.openx.net
- BidSwitch2 requestsAdvertising
x.bidswitch.net
- Opera Ads2 requestsAdvertising
t.adx.opera.com, t.oa.opera.com
- LiveRamp1 requestAdvertising
pb.ladsp.com
- Nexx3601 requestAdvertising
fast.nexx360.io
- MicroAd1 requestAdvertising
s-rtb-pb.send.microad.jp
- RTB House1 requestAdvertising
prebid-asia.creativecdn.com
- Amobee (Turn)1 requestAdvertising
ad.turn.com
- AdMan Media1 requestAdvertising
cs.admanmedia.com
- Blis1 requestAdvertising
tr.blismedia.com
- Google Analytics8 requestsAnalytics
www.googletagmanager.com, www.google-analytics.com, region1.google-analytics.com
Other third parties (content delivery, consent, functional, unclassified)
- ad-delivery.net11 requestsUnclassified
ad-delivery.net
- dns-finder.com2 requestsUnclassified
ab.dns-finder.com
- presage.io2 requestsUnclassified
mweb-hb.presage.io, ms-cookie-sync.presage.io
- adingo.jp1 requestUnclassified
hb.adingo.jp
- adtdp.com1 requestUnclassified
ad.as.amanad.adtdp.com
- 4dex.io1 requestUnclassified
mp.4dex.io
- mediagotechnology.com1 requestUnclassified
go.mediagotechnology.com
- uncn.jp1 requestUnclassified
ds.uncn.jp
- temu.com1 requestUnclassified
www.temu.com
- Hatena203 requestsFunctional
cdn-ak2.favicon.st-hatena.com, cdn-ak-scissors.favicon.st-hatena.com, cdn.image.st-hatena.com, cdn.pool.st-hatena.com
- Google51 requestsFunctional
fonts.gstatic.com, fonts.googleapis.com
- jsDelivr1 requestContent delivery
cdn.jsdelivr.net
Cookies set before consent
The longest-lived tracking cookie it set was __utma, from Google Analytics, lasting about 13 months.
| Cookie | Purpose | Set by | Lasts |
|---|---|---|---|
| ac_r | Advertising | admanmedia.com (third party) | 7 days |
| admtr | Advertising | admanmedia.com (third party) | 7 days |
| b | Advertising | blismedia.com (third party) | 12 months |
| c | Advertising | impact-ad.jp (third party) | 12 months |
| c | Advertising | bidswitch.net (third party) | 12 months |
| cmt | Advertising | y.one.impact-ad.jp (third party) | 12 months |
| cto_bundle | Advertising | criteo.com (third party) | 13 months |
| cto_bundle | Advertising | hatena.ne.jp | 13 months |
| custom_data | Advertising | bidswitch.net (third party) | Under a day |
| IDE | Advertising | doubleclick.net (third party) | 13 months |
| OAU | Advertising | opera.com (third party) | 12 months |
| psm | Advertising | impact-ad.jp (third party) | 14 days |
| tuuid | Advertising | impact-ad.jp (third party) | 12 months |
| tuuid | Advertising | bidswitch.net (third party) | 12 months |
| tuuid_lu | Advertising | bidswitch.net (third party) | 12 months |
| tuuid_lu | Advertising | impact-ad.jp (third party) | 12 months |
| uid | Advertising | criteo.com (third party) | 13 months |
| uid | Advertising | turn.com (third party) | 6 months |
| __utma | Analytics | hatena.ne.jp | 13 months |
| __utmb | Analytics | hatena.ne.jp | Under a day |
| __utmc | Analytics | hatena.ne.jp | Session |
| __utmz | Analytics | hatena.ne.jp | 6 months |
| _dc_gtm_UA-47034238-1 | Analytics | hatena.ne.jp | Under a day |
| _ga | Analytics | hatena.ne.jp | 13 months |
| _ga_6J1ZXVTZGY | Analytics | hatena.ne.jp | 13 months |
| _ga_QM5HX8W79Z | Analytics | hatena.ne.jp | 13 months |
| _gat_UA-47034238-2 | Analytics | hatena.ne.jp | Under a day |
| _gid | Analytics | hatena.ne.jp | 1 day |
| b | Unclassified | hatena.ne.jp | 13 months |
| presage-ssp | Unclassified | presage.io (third party) | 6 months |
| __cf_bm | Functional | temu.com (third party) | Under a day |
| receive-cookie-deprecation | Functional | adtdp.com (third party) | 6 months |
| t | Functional | uncn.jp (third party) | 12 months |
| __eoi | Necessary | hatena.ne.jp | 6 months |
The page also wrote 7 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.