customlinks.appsflyer.com is a subdomain of AppsFlyer, a major player in mobile attribution and marketing analytics. That alone gives it a solid foundation of trust. The site itself is a service endpoint for generating custom tracking links, and it's protected by Cloudflare with a valid SSL certificate. No malware or blacklist issues were found. While the subdomain doesn't have its own about page or legal disclosures, those are covered by the parent company's policies. The bot protection (the 403 error you see) is normal for this kind of backend service. So if you're wondering whether customlinks.appsflyer.com is a scam, the answer is no — it's a legitimate part of a well-established platform. For advertisers using AppsFlyer, this is a safe tool to use. There are no red flags that would suggest a fake or risky site.
Yes — customlinks.appsflyer.com looks mostly safe
In plain English
This is a subdomain of AppsFlyer, a reputable marketing analytics company. The site has strong security, no malware warnings, and is hosted on a professional CDN. While the subdomain itself has limited transparency, the parent company is well-known and trustworthy. You can use it with confidence for its intended purpose.
Where the score comes from
Solid security setup: modern TLS, a reputable CDN, and no malware flags. This is what you'd expect from a subdomain of a major tech company.
The subdomain belongs to AppsFlyer, a well-known marketing analytics platform. While the subdomain itself has no separate WHOIS, the parent company's identity is public and established.
Clean blacklists and no security alerts. The lack of a web archive history is unremarkable for a service endpoint, and the parent company's reputation backs this subdomain.
No about page or contact info on the subdomain itself, but that's normal for a technical service. The parent company provides full transparency.
No legal pages on the subdomain, but the parent company's privacy policy and terms of service cover this service. This is standard for subdomains.
Reliable hosting with Cloudflare and fast load times. DNSSEC is off, but that's a minor gap. The domain is not set up to handle email, which is fine for a link service.
What we checked
Security & Transport
Certificate issued by Let's Encrypt
X-Frame-Options: SAMEORIGIN
No threats detected by Google Web Risk
Valid certificate, expires in 80 days
Site sets some security response headers: X-Frame-Options, Referrer-Policy
Web server: cloudflare
Connection uses TLS 1.3
Identity & WHOIS
No About / Team / Company page detected.
No favicon found — unusual for an established business
No dedicated legal-entity disclosure page detected — common and expected outside the EU, but required for commercial sites in Germany, France, Spain, Italy, and other EU jurisdictions.
Bot protection prevented page inspection
Bot protection prevented checking legal pages
Infrastructure & DNS
Site is served behind Cloudflare — indicates real operational investment in edge infrastructure
Not found on any DNS blacklists
Resolves to: 162.159.140.159, 172.66.0.157
Domain is not signed with DNSSEC
No MX records found — domain may not handle email
Hosted on: AS13335 CLOUDFLARENET (US)
Fast page load
Reputation & Reach
HTML declares lang="en"
No sitemap found — common for smaller sites
Bot protection prevented page inspection
No structured data markup found
This site is not in the top 1 million most visited websites — this is normal for small or new businesses
No snapshots found in the Wayback Machine — site may be very new
Website returned HTTP 403 — likely WAF or bot protection blocking automated checks. The site is online but restricts non-browser access.
No robots.txt file — common for small sites
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