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Its website address was registered 29 years ago, and is locked against transfer to someone else. It is among the 5,000 most-visited sites on the internet (Cloudflare Radar). Google Safe Browsing shows no malware or phishing warnings for its website. Be cautious: its 1,510 reviews on SmartCustomer average only 2.5 stars out of 5. We could not find an email address or a phone number.","context":"Important context: Truth Signal weighs public evidence about this business. A high score means strong evidence that the business is established and legitimate, not a promise that it is safe to buy from or that every purchase will go well. A low score means the evidence is thin or raises concerns, not that the business is unsafe or a scam.","sections":[["Positives","good",[{"text":"Pages read: about, returns, shipping, terms, privacy","source":"website","plain":true},{"text":"Domain registered 29 years ago","source":"rdap","plain":true},{"text":"Among the 5,000 most-visited sites on the internet (Cloudflare Radar)","source":"radar","plain":true},{"text":"No malware or phishing warnings","source":"safe_browsing","plain":true}]],["Be cautious","bad",[{"text":"A large number of independent reviews (1,510 on SmartCustomer), but it falls short with only 2.5 stars out of 5","source":"reviews","plain":false}]],["Not found","none",[{"text":"Email address information was not found from our checks.","source":"website","plain":false},{"text":"Phone number information was not found from our checks.","source":"website","plain":false}]]],"missing":[],"page":{"rows":[["Who they are","registry","Company details","building","Based in the US; founded in 1976 (Wikipedia)","info"],["Who they are","rdap","Domain registration","clock","Its website address was registered 29 years ago","good"],["Who they are","website","Website details","globe","We read 5 of its pages: about, returns, delivery, terms and privacy","good"],["Reputation and track record","reviews","Customer reviews","star","3,154 reviews on Trustpilot · SmartCustomer 2.5 stars from 1,510 reviews","bad"],["Reputation and track record","crux","Visitor traffic","eye","It is among the 5,000 most-visited sites on the internet (Cloudflare Radar)","info"],["Reputation and track record","wayback","Web history and authority","history","The Internet Archive first saved a copy of its website 28 years ago","good"],["Reputation and track record","social","Social presence","users","It is on 6 social media platforms (Facebook, Instagram, TikTok, X, YouTube and LinkedIn); the largest audience is 3,000,000 followers on Instagram","good"],["Safety","safe_browsing","Malware and phishing","bug","Google Safe Browsing shows no malware or phishing warnings for its website","good"],["Safety","hibp","Data breach history","lock","No known data breach involving the company","good"],["Safety","dns","Domain and email security","shield-check","Its email is protected: mail forged in its name is blocked","good"]],"tally":"1 be cautious · 7 clear · 2 for information","held":null,"satisfaction":[["Trustpilot","","3,154 reviews · rating not read",false],["SmartCustomer","2.5","1,510 reviews",false]],"found":{"registry":[],"rdap":[["Its website address is locked against being transferred to someone else","good"]],"website":[],"reviews":[["3,154 reviews on Trustpilot","good"],["Rated 2.5 stars out of 5 from 1,510 reviews on SmartCustomer","bad"]],"crux":[["Real people visited its website in 24 of the last 24 months (Google Chrome usage data)","good"],["Real people have visited its website since February 2021 or earlier","good"]],"wayback":[],"social":[["Its YouTube channel has 26,800 subscribers and 729 videos, the latest uploaded on 7 Oct 2026","good"]],"safe_browsing":[],"hibp":[],"dns":[]},"provided":[],"sections":[["Positives","good",[{"text":"We read 5 of its pages: about, returns, delivery, terms and privacy","source":"website"},{"text":"Its website address was registered 29 years ago","source":"rdap"},{"text":"It is among the 5,000 most-visited sites on the internet (Cloudflare Radar)","source":"radar"},{"text":"Google Safe Browsing shows no malware or phishing warnings for its website","source":"safe_browsing"}]],["Be cautious","bad",[{"text":"A large number of independent reviews (1,510 on SmartCustomer), but it falls short with only 2.5 stars out of 5","source":"reviews"}]],["Not found","none",[{"text":"Email address information was not found from our checks.","source":"website"},{"text":"Phone number information was not found from our checks.","source":"website"}]]]},"answer":"Is costco.com legit and trustworthy? Truth score 84 out of 100, high truth signals: 7 of 10 public checks clear, 1 to be cautious about, 2 for information. Legitimacy confidence: high. Customer satisfaction: mostly dissatisfied.","citation":{"source":"Truth Signal","url":"https://truthsignal.com/business/costco.com","assessed_at":"2026-10-16T07:25:27.691246+00:00","licence":"CC BY 4.0","licence_url":"https://creativecommons.org/licenses/by/4.0/","cite_as":"Truth Signal, Welcome to Costco Wholesale: truth score 84 out of 100, legitimacy confidence High, assessed 2026-10-16, https://truthsignal.com/business/costco.com"}}