customer.io
Category: Technology
99
/ 100 Trust Score
Based on scan findings at the time of analysis
No Threats Found
Screenshot of customer.io
Captured Jun 7, 2026
https://customer.io
14 years
Very Popular - #2,349 Tranco rank (>10M monthly visitors)
Not listed (91 checked)
✓ Valid (TLS)
Vercel, Inc
Walnut, United States
Vercel
Next.js
76.76.21.21
Domain & WHOIS Information
Registrar
1API GmbH
Registered
October 26, 2011
Expires
October 26, 2026
Name Servers
ns-1181.awsdns-19.org
DNSSEC
Unsigned
Hosting
Vercel, Inc
Reputation & Threat Check
91 security engines checked
0
Not flagged
Direct Threat Database Sources
Google
Not listed
Spamhaus DBL
Not listed
SURBL
Not listed
Spamhaus ZEN
Not listed
Barracuda
Not listed
SpamCop
Not listed
Phishtank
Not listed
URLhaus
Not listed
QBMA
Not listed
View detailed engine results on VirusTotal
File Scan Summary
Powered by Quttera Engine
2 files scanned
No threats
2
Low Risk
0
Medium Risk
0
High Risk
0
No threats
Low Risk
Medium Risk
High Risk
customer.io/competitors
557.0 KB
No threats
customer.io/about
458.0 KB
No threats
External Links & Domains
186
External Links
All Clean
0
Iframes
Clean
32
Referenced Domains
All Clean
0
Flagged Resources
None Detected
http://customer.io/_next/image?url%3D%2F_next%2Fstatic%2Fmedia%2Faicpa.a1b9a265.svg&%3Bw%3D64&%3Bq%3D75Not flagged
http://customer.io/_next/image?url%3D%2F_next%2Fstatic%2Fmedia%2Fg2.13bc19bd.svg&%3Bw%3D64&%3Bq%3D75Not flagged
http://customer.io/_next/image?url%3D%2F_next%2Fstatic%2Fmedia%2Fgdpr.d29ba28a.svg&%3Bw%3D64&%3Bq%3D75Not flagged
http://customer.io/_next/image?url%3D%2F_next%2Fstatic%2Fmedia%2Fhipaa.ca6b6aba.svg&%3Bw%3D64&%3Bq%3D75Not flagged
http://customer.io/_next/image?url%3D%2F_next%2Fstatic%2Fmedia%2Fsecurity.3c247d87.svg&%3Bw%3D64&%3Bq%3D75Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F0002f7196409c46282ba471502920c1df5f8c5fd-800x320.png%3Fw%3D800%26h%3D320%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F0be66f31c25697e5eba81076a1078da84d9f936d-200x200.png%3Fw%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F0ff0d1719beb2692304ca0975d9bc6b9c0ba45fa-372x372.png%3Fw%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F1390cad6e6c275993734c25acadf20766f814c39-372x373.png%3Frect%3D0%2C1%2C372%2C372%26w%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F22caeb2ce042d8b1f54e45326d2844896f22aa01-801x800.png%3Fw%3D801%26h%3D800%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F23a613e21cbdc50bf3fee6f3fd2f3e843244efb0-801x320.png%3Fw%3D801%26h%3D320%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F2bc777e843bbcb7c0884d3ab2a00ec80c9407a0f-368x368.png%3Fw%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F2c756a64290deec6804f02dde1c5ae2d69e537bf-100x100.jpg%3Fw%3D100%26h%3D100%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F3e41f70092c682681fe27a5ad70e9fe137749f31-372x372.png%3Fw%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F40ce67aa5cb61c613e5e00baa078512a9f662262-800x320.png%3Fw%3D800%26h%3D320%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
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http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F45d14cccda3d4ca5a4aea9a4b07c3ea4230d9048-100x100.jpg%3Fw%3D100%26h%3D100%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F4694d1fac4e2ab02fe266b4759abf44ab8703483-372x372.png%3Fw%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F48511b0818819aa38b3a3096035aa16f2af6cad0-800x320.png%3Fw%3D800%26h%3D320%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F4c681ac810ad495a652142c8317ed7e2d294cf64-372x372.png%3Fw%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F5371ff21efa869841009d2e08b389993a0e99546-368x368.png%3Fw%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F5593f2273b46ce0731fffdbbbb31cb35ac4c7a2c-372x373.png%3Frect%3D0%2C1%2C372%2C372%26w%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F5df04cfdf38a4ab05ce42ebcd6c72c5783ba27a9-894x908.png%3Fw%3D894%26h%3D908%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F6741beeb3afb809e2853ffacfadf116112459890-372x372.png%3Fw%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F687e1bb1c4d7449c47d9d304d7fb9fc7526dacd5-800x320.png%3Fw%3D800%26h%3D320%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
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http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F73148b2e2b97e54462de284f34fa363f9c7927c2-800x320.png%3Fw%3D800%26h%3D320%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F7579fa294af386e6f8c17387230432c53c75afbc-368x368.png%3Fw%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
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http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F880eec6e462da351896e4ba69a7930ee046f14d8-372x373.png%3Frect%3D0%2C1%2C372%2C372%26w%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F8e5b98836ab12136a7a9b5c1c0df4374d61ccccb-801x800.png%3Fw%3D801%26h%3D800%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2F9243a0ba89d569171bb0aea9603f5578eda94b57-368x368.png%3Fw%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
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http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2Fa8e88971d105b6a4846f10bb80c47f572b6b03f8-120x120.png%3Fw%3D100%26h%3D100%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
http://customer.io/_next/image?url%3Dhttps%3A%2F%2Fcdn.sanity.io%2Fimages%2Fonirtmj2%2Fproduction%2Fad4d5e377487c346d97a78421989d99d35dd86cc-200x200.png%3Fw%3D150%26h%3D150%26fit%3Dfill%26auto%3Dformat&%3Bw%3D3840&%3Bq%3D80Not flagged
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http://customer.io/_next/static/media/13d948bc5b1ae448-s.p.woff2Not flagged
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http://customer.io/contactNot flagged
http://customer.io/demoNot flagged
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http://customer.io/features/anonymous-messagesNot flagged
http://customer.io/features/audience-segmentationNot flagged
http://customer.io/features/custom-objectsNot flagged
http://customer.io/features/data-activationNot flagged
http://customer.io/features/data-warehouseNot flagged
http://customer.io/features/email-marketingNot flagged
http://customer.io/features/in-app-messagesNot flagged
http://customer.io/features/push-notificationsNot flagged
http://customer.io/features/sms-marketingNot flagged
http://customer.io/features/visual-workflow-builderNot flagged
http://customer.io/features/whatsappNot flagged
http://customer.io/integrationsNot flagged
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http://customer.io/manifest.webmanifestNot flagged
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http://customer.io/platformNot flagged
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http://customer.io/platform/analyticsNot flagged
http://customer.io/platform/data-integrationsNot flagged
http://customer.io/platform/design-studioNot flagged
http://customer.io/platform/journeysNot flagged
http://customer.io/pricingNot flagged
http://customer.io/securityNot flagged
http://customer.io/solutions/startupsNot flagged
http://customer.io/supportNot flagged
https://academy.customer.io/pages/get-startedNot flagged
https://customer.ioNot flagged
https://customer.io/aboutNot flagged
https://customer.io/apple-touch-icon.pngNot flagged
https://customer.io/assetsNot flagged
https://customer.io/blog/beyond-customer-data-with-custom-objects/Not flagged
https://customer.io/careersNot flagged
https://customer.io/competitorsNot flagged
https://customer.io/competitors/customer-io-vs-intercom/Not flagged
https://customer.io/favicon-48x48.pngNot flagged
https://customer.io/favicon-96x96.pngNot flagged
https://customer.io/favicon.icoNot flagged
https://customer.io/favicon.svgNot flagged
https://docs.customer.ioNot flagged
https://docs.customer.io/integrations/api/customerio-apisNot flagged
https://fly.customer.io/loginNot flagged
https://fly.customer.io/signupNot flagged
https://learn.customer.io/case-studies/goodyNot flagged
https://learn.customer.io/case-studies/musoraNot flagged
https://learn.customer.io/case-studies/notionNot flagged
https://learn.customer.io/case-studies/zen-comNot flagged
https://learn.customer.io/integrations/build-vs-buy-cdpNot flagged
https://learn.customer.io/integrations/customer-data-platform-guideNot flagged
https://learn.customer.io/integrations/favorite-integrationsNot flagged
https://learn.customer.io/omnichannel/marketing-personalizationNot flagged
https://podcasts.apple.com/ca/podcast/driving-product-led-growth-plg-with-customer-io/id1649355311?i%3D1000662386606Not flagged
https://recruitingfuture.com/2023/05/ep-523-overcoming-remote-challenges/Not flagged
https://status.customerio.comNot flagged
https://try.customer.io/competitors/vs-activecampaignNot flagged
https://try.customer.io/competitors/vs-brazeNot flagged
https://try.customer.io/competitors/vs-hubspotNot flagged
https://try.customer.io/competitors/vs-iterableNot flagged
https://try.customer.io/competitors/vs-klaviyoNot flagged
https://try.customer.io/competitors/vs-mailchimpNot flagged
https://try.customer.io/competitors/vs-marketoNot flagged
https://try.customer.io/competitors/vs-mparticleNot flagged
https://try.customer.io/competitors/vs-onesignalNot flagged
https://try.customer.io/competitors/vs-orttoNot flagged
https://try.customer.io/competitors/vs-rudderstackNot flagged
https://try.customer.io/competitors/vs-salesforceNot flagged
https://try.customer.io/competitors/vs-segmentNot flagged
https://try.customer.io/competitors/vs-sendgridNot flagged
https://twitter.com/customerioNot flagged
https://www.bizjournals.com/portland/news/2023/09/07/middle-market-back-to-work-mandates-recession.htmlNot flagged
https://www.cmswire.com/digital-marketing/how-to-rock-the-new-email-rules/Not flagged
https://www.fastcompany.com/90991115/the-latest-corporate-benefit-parental-leave-from-your-first-day-at-workNot flagged
https://www.forbes.com/councils/forbestechcouncil/2023/11/17/marketing-your-tech-20-effective-ideas-for-reaching-a-broad-audience/Not flagged
https://www.foundersecrets.io/p/scaling-customerio-50m-arr?utm_source%3Dfoundersmenu.beehiiv.com&%3Butm_medium%3Dreferral&%3Butm_campaign%3Dfounders-feast-004-lean-startup-feedback-loop-170-build-tools-addedNot flagged
https://www.googletagmanager.com/gtm.js?id%3DGTM-NRGKPHXNot flagged
https://www.instagram.com/customer.io/Not flagged
https://www.linkedin.com/company/customer-ioNot flagged
https://www.mediapost.com/publications/article/381861/Not flagged
https://www.newsweek.com/these-top-30-workplaces-are-most-loved-globally-2025-2072923Not flagged
https://www.saastr.com/how-top-saas-companies-drive-2-3x-better-campaign-performance-through-multi-channel-personalization-with-customer-io/Not flagged
https://www.youtube.com/channel/UCkCaWdezRoa8ZyR9pEVaipANot flagged
academy.customer.ioNot flagged
brand.customer.ioNot flagged
buffer.comNot flagged
builtin.comNot flagged
cdn.sanity.ioNot flagged
customer.ioNot flagged
dash.partnerstack.comNot flagged
docs.customer.ioNot flagged
fly.customer.ioNot flagged
help.branch.ioNot flagged
learn.customer.ioNot flagged
my.pima.appNot flagged
podcasts.apple.comNot flagged
recruitingfuture.comNot flagged
status.customerio.comNot flagged
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try.customer.ioNot flagged
twitter.comNot flagged
vercel.liveNot flagged
www.bizjournals.comNot flagged
www.cmswire.comNot flagged
www.customer.ioNot flagged
www.fastcompany.comNot flagged
www.forbes.comNot flagged
www.foundersecrets.ioNot flagged
www.googletagmanager.comNot flagged
www.instagram.comNot flagged
www.linkedin.comNot flagged
www.mediapost.comNot flagged
www.monarchmoney.comNot flagged
www.newsweek.comNot flagged
www.saastr.comNot flagged
www.youtube.comNot flagged
customer.io Overview
Description of customer.io
customer.io appears to be the official website for Customer.io, a software platform focused on customer engagement, marketing automation, messaging, and data-driven personalization. The homepage messaging and metadata indicate that the service helps businesses build personalized customer journeys across channels using first-party data, with features related to campaigns, analytics, content creation, and lifecycle messaging.
Based on the domain, branding, and page content, this appears to be a business-to-business technology service rather than a consumer-facing retail site. The site presents product information, pricing, resources, sign-in access, and demo/trial options, which is consistent with a mature SaaS company serving marketing, product, and customer communication teams.
Safety Assessment for customer.io
The available scan results are strongly reassuring at the time of this scan. The domain was not flagged by any of 91 security engines, the malware scan reported no flagged files, and the checked blacklist and threat-database sources did not report listings. External-link analysis also did not identify flagged outbound links, referenced domains, or iframes.
Additional context also supports a lower-risk assessment: the domain has been registered for more than 14 years, has a very strong web-traffic presence, and the visible site content matches a professional software platform with consistent branding and business-oriented functionality. No obvious phishing, malware-delivery, scam-store, or parked-domain indicators were evident from the provided data.
Based on available data, no threats were detected at the time of this scan.
Technical Description
The site is served over HTTPS with a valid SSL/TLS certificate and is hosted on Vercel infrastructure, with the resolved server IP associated with Vercel in the United States. The nameserver configuration uses AWS DNS, which is common for established cloud-hosted services. The page structure and asset paths suggest a modern web application stack, likely using a framework that serves optimized static assets.
One minor technical note is that DNSSEC appears to be unsigned, which is not unusual but means DNS responses do not benefit from DNSSEC validation. No major infrastructure-level security concerns were evident from the supplied scan data at the time of review.
HTTP Redirect Chain
No redirects detected - direct connection to destination
Website Insights
Popularity
Cookies
#2,349
Tranco Rank
Very Popular
Rank History (30 days)
Apr 27
Jun 6
16
cookies detected
Essential14
Analytics2
Advertising0
Social0
15
1st party cookies
1
3rd party (tracker)
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This report was generated automatically and is provided for informational
purposes only. Results are based on a point-in-time scan and may contain
false positives or incomplete data. This does not constitute a security
audit or certification. No vendor in the market can guarantee a 100%
detection rate. If you believe this report is inaccurate, please
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