Is zks1-test0-ib.adnxs.com legit or a scam?
Legitimate ad-tech infrastructure (AppNexus/Microsoft) but flagged by users for unwanted pop-ups and tracking behavior linked to adware.
These checks passed — but they don't clear the site. A clean antivirus result, valid SSL, and a calm server only mean it isn't hosting malware; they say nothing about whether the business is real. This verdict is based on the site's conduct and content, not a malware detection.
Analysis Summary
Warning signs detected
Legitimate ad-tech infrastructure (AppNexus/Microsoft) but flagged by users for unwanted pop-ups and tracking behavior linked to adware. Several risk indicators suggest caution. This site might be legitimate — but treat it as unverified until you can independently confirm.
Website Preview
Automated page render — captured in a safe sandbox. What an ordinary visitor would see when loading the site.
MT Intelligence
The parent domain adnxs.com is a genuine 18-year-old advertising platform now owned by Microsoft, and the subdomain zks1-test0-ib.adnxs.com follows standard naming conventions for AppNexus impression-bus servers used in programmatic ad serving. However, multiple user complaints describe ib.adnxs.com subdomains as sources of unwanted pop-up advertisements, often appearing on systems infected with adware or browser hijackers. The complaints are not about the domain itself being malicious, but about the ads and tracking it delivers — a common pattern when legitimate ad networks are exploited by malicious actors or bundled with PUPs. The "test0" label in the subdomain suggests this may be an internal or staging server. No direct fraud, phishing, or malware detections target this specific subdomain, and the parent company's business registration is active and legitimate.
Web Research Findings
Our live research agent queries scam-report databases, consumer-review sites, news coverage, and general web search for zks1-test0-ib.adnxs.com, then cross-checks business-registration records and look-alike domain patterns. Everything below is pulled from what it actually found.
- adnxs.com is the primary domain for AppNexus, a well-known programmatic advertising platform and ad exchange founded in 2007, acquired by AT&T (as Xandr) in 2018 and by Microsoft in 2022.
- Subdomains like ib.adnxs.com (impression bus) are used for real-time bidding, cookie syncing, user tracking, and serving display ads across the web.
- The specific subdomain zks1-test0-ib.adnxs.com appears in very limited public references (e.g., one Japanese ad stats capture); "test0" suggests it may be an internal/test server.
- User complaints about ib.adnxs.com (and similar like ams1.ib.adnxs.com, lax1.ib.adnxs.com) primarily involve unwanted pop-up ads, often linked to adware, browser hijackers, or PUPs installed via software bundling.
- Security forums (Bitdefender, Reddit, Microsoft Answers) frequently discuss adnxs.com cookies as tracking-related rather than malware, though pop-ups lead to removal guides.
- No direct scam reports, malware detections, or fraud complaints specifically naming zks1-test0-ib.adnxs.com were found. Domain age of ~18 years aligns with AppNexus operations.
- Microsoft/Xandr documentation actively references ib.adnxs.com and api.adnxs.com for legitimate ad tech functions such as user ID synchronization and data sharing.
adnxs.com is the domain of AppNexus (now part of Microsoft Advertising, formerly Xandr). Legitimate ad tech company acquired by Microsoft in 2022.
Mozilla Support users report receiving pop-ups from ib.adnxs.com advertising gambling or "lucky chance" offers. Security removal guides classify ib.adnxs.com as a browser redirector that modifies browser settings and displays unwanted ads. These complaints are consistent with the domain's role in ad delivery when exploited by adware or PUPs, rather than indicating the domain itself is a scam. The parent company, AppNexus (now Microsoft Advertising), is a legitimate, well-established ad-tech platform. No scam reports, phishing attempts, or malware detections specifically target zks1-test0-ib.adnxs.com.
Antivirus Engines
Security Scans
Checked against the major public blocklists used by browsers and security tools — no hits.
Domain & Encryption
Server Reputation
Proceed with caution
Our automated review flagged enough risk that you should treat this site as unverified.
- Treat zks1-test0-ib.adnxs.com as unverified
Do not enter credentials or send money until you have independently verified the business.
- Verify the business through independent channels
Check the company's social profiles, registry records, and search for recent news or reviews that are not hosted on the site itself.
- Never use irreversible payment methods
Crypto, gift cards, wire transfers, and cash apps offer zero buyer protection. Use a credit card or PayPal if you must pay.
- OpenShare your experience
If you have additional context, drop a comment below or post on the MalwareTips forum.
Reputation Sources
How this domain rates across independent threat-intelligence and blocklist providers.
Safety FAQ
Common questions about this site, answered directly from the scan data above — so the answers always reflect the latest verdict on this page.
- Our automated security review marked zks1-test0-ib.adnxs.com as suspicious. Several warning signs were detected; it may still turn out legitimate, but you should verify it through independent channels before trusting it with money or credentials.
- zks1-test0-ib.adnxs.com currently scores 55/100 on our trust scale. We found enough warning signals to recommend caution. Verify the site through independent channels before entering credentials or money.
- Yes. zks1-test0-ib.adnxs.com presents a valid TLSv1.2 certificate issued by DigiCert Inc · GeoTrust TLS ECC CA G1, expiring in 138 days. Note that SSL only encrypts the connection — it does not guarantee that the site itself is trustworthy.
- zks1-test0-ib.adnxs.com is 18.0 years old, registered on 5/27/2008 through MarkMonitor Inc.. Scam domains are often freshly registered — a site under 6 months old warrants extra caution.
- No. All 0 antivirus engines in our malware network report zks1-test0-ib.adnxs.com as clean.
- No. zks1-test0-ib.adnxs.com is not currently listed on the major browser blocklist feeds that modern browsers use.
- zks1-test0-ib.adnxs.com resolves to an IP operated by Microsoft Corporation in KR (usage type: Data Center/Web Hosting/Transit). Hosting location alone doesn't make a site good or bad, but unusual geography for a brand's claimed country is one of many signals we weigh.
- This is a permanent record of the scan run on June 10, 2026. The verdict and evidence above reflect that scan and do not change on their own. If circumstances around zks1-test0-ib.adnxs.com have changed, MalwareTips staff can run a fresh scan, which re-runs every check from scratch and publishes an updated report.
User reviews & comments(0)
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