You probably won't type this URL into a browser yourself. 13718872.fls.doubleclick.net is a subdomain of Google's advertising platform, DoubleClick, and it's used for tracking conversions and activity. The 404 error you see means the specific tracking pixel is no longer active or misconfigured — not that the site is malicious. There are no signs of scams or phishing, and the parent domain is one of the most reputable on the internet. For ordinary users, this URL isn't something you need to evaluate like an e-commerce store. It doesn't ask for personal data or payments. The main takeaway: if your ad blocker or network tool shows this address, it's just a background tracking call, not a threat. Reviews of doubleclick.net itself are overwhelmingly positive in the advertising industry. So while this particular endpoint is broken, it poses no danger. You can safely ignore it.
Yes — 13718872.fls.doubleclick.net looks mostly safe
In plain English
This isn't a website you browse — it's an advertising tracking subdomain from Google's DoubleClick network, and it currently returns a 404 error. The parent domain is legitimate and well-known, so there's no scam risk here. If you see this URL in network traffic, you can ignore it; it's not a site you need to interact with or trust for any transaction.
Where the score comes from
SSL certificate is valid and modern TLS is supported, but the server still accepts outdated TLS 1.0 and 1.1 — a minor vulnerability that matters less for a tracking endpoint than a checkout page. No security headers are set, but those are rarely expected for background ad calls.
This subdomain belongs to doubleclick.net, which is owned by Google. The WHOIS record for the parent domain is well-known and transparent. The subdomain itself is a numeric identifier — anonymity at this level is completely normal for a tracking system.
No blacklist hits, no Google Safe Browsing flags, and the domain is hosted on Google's own infrastructure. A clean reputation consistent with legitimate advertising networks.
There is no about page or contact info, but that's expected for an ad-tracking subdomain — it's not a business website. The parent company (Google) is well known and easily verifiable.
No privacy policy or terms of service are present on this subdomain. However, this endpoint doesn't collect user data directly; it's part of a larger system where compliance is handled at the parent domain level. For a tracking pixel, this is unremarkable.
Hosted on Google's network with fast load times and valid DNS resolution. Missing DNSSEC and email records are typical for a subdomain that serves no content itself. The acceptance of deprecated TLS is the main point of friction.
What we checked
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