http://fast.a.klaviyo.com
Report summary
Submitted and final observations · captured HTTP activity
- Submitted URL
- http://fast.a.klaviyo.com
- Submitted IP / ASN
151.101.238.133 AS54113 · FASTLY
- Final URL
- https://www.klaviyo.com/
- Final IP / ASN
104.18.40.137 AS13335 · CLOUDFLARENET
Final page
- Page title
- Klaviyo: AI Email Marketing & SMS | B2C CRM
- Final DOM MIME
- text/plain; charset=utf-8
- Final DOM size
- 0 B (0 bytes)
Detections
Activity
- HTTP requests
- 183
- Observed hosts
- 25
- Script records
- 172
Estimated HTTP data
- Sent
- ~115.7 KB
- Received
- ~14.31 MB
Page capture
Final browser state
Detection signals
URLQuery findings, Threat Detection Systems, and IDS alerts
Absence of findings is not a clean verdict.
Host infrastructure
Observed hosts are context, not independent maliciousness verdicts
| Host | Rank | Registered | First seen | Last seen | Sent | Received | IP | Fingerprints |
|---|---|---|---|---|---|---|---|---|
| www.klaviyo.com | 66121 | 2012-03-29 | 2013-10-18 | 2026-08-12 | 59.4 KB | 5.55 MB | 104.18.40.137 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. Netlify PaaS, CDN Netlify providers hosting and server-less backend services for web applications and static websites. Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. Klaviyo Marketing automation Klaviyo is an email and SMS marketing platform for online businesses. Optimizely A/B Testing, Personalisation Optimizely is an experimentation platform that helps developers build and run A/B tests on websites. reCAPTCHA Security reCAPTCHA is a free service from Google that helps protect websites from spam and abuse. |
| transcend-cdn.com | 10213 | 2023-01-31 | 2023-02-01 | 2026-08-07 | 2.6 KB | 428.2 KB | 172.64.147.18 | Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. |
| events.navattic.com | N/A | 2019-10-06 | 2026-03-11 | 2026-08-13 | 1.1 KB | 454 B | 104.18.22.60 | Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. |
| lensflare.vimeo.com | 36991 | 2004-12-15 | 2024-11-18 | 2026-08-08 | 813 B | 0 B | Not recorded | |
| js.navattic.com | 178993 | 2019-10-06 | 2022-07-05 | 2026-08-08 | 487 B | 29.9 KB | 104.18.22.60 | Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. |
| arclight.vimeo.com | 24414 | 2004-12-15 | 2024-11-18 | 2026-08-11 | 908 B | 0 B | Not recorded | |
| js.hsforms.net | 43845 | 2013-09-18 | 2013-09-26 | 2026-08-13 | 477 B | 593.5 KB | 104.16.6.65 | Amazon CloudFront CDN Amazon CloudFront is a fast content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency, high transfer speeds. HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. Cloudflare Bot Management Security Cloudflare bot management solution identifies and mitigates automated traffic to protect websites from bad bots. Amazon Web Services PaaS Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality. |
| js.hs-scripts.com | 18499 | 2016-07-11 | 2016-08-09 | 2026-08-10 | 474 B | 2.2 KB | 104.16.138.209 | Cloudflare Bot Management Security Cloudflare bot management solution identifies and mitigates automated traffic to protect websites from bad bots. Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. |
| cdn.sanity.io | 67597 | 2015-01-07 | 2017-03-16 | 2026-08-07 | 19.1 KB | 979.6 KB |  34.149.250.58 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Varnish Caching Varnish is a reverse caching proxy. Google Cloud CDN CDN Cloud CDN uses Google's global edge network to serve content closer to users. Google Cloud IaaS Google Cloud is a suite of cloud computing services. |
| fast.a.klaviyo.com | 22057 | 2012-03-29 | 2018-04-18 | 2026-08-13 | 487 B | 377 B | 151.101.194.133 | Nginx Web servers, Reverse proxies Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. Varnish Caching Varnish is a reverse caching proxy. HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |
| fonts.gstatic.com | N/A | 2008-02-11 | 2014-04-02 | 2026-08-09 | 1.7 KB | 108.9 KB | 142.250.178.67 | |
| www.gstatic.com | 146047 | 2008-02-11 | 2012-05-29 | 2026-08-09 | 2.6 KB | 2.44 MB | 142.250.178.99 | |
| vimeo.com | 78 | 2004-12-15 | 2012-05-20 | 2026-08-13 | 1.9 KB | 3.9 KB | Not recorded | Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. Varnish Caching Varnish is a reverse caching proxy. Cloudflare Bot Management Security Cloudflare bot management solution identifies and mitigates automated traffic to protect websites from bad bots. Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Varnish:6.0 Caching Varnish is a reverse caching proxy. |
| cdnjs.cloudflare.com | 1222 | 2009-02-17 | 2012-05-23 | 2026-08-09 | 491 B | 10.0 KB | 104.17.24.14 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. |
| extend.vimeocdn.com | 80308 | 2010-04-21 | 2015-04-13 | 2026-08-12 | 464 B | 17.1 KB | 151.101.64.217 | Apache HTTP Server Web servers Apache is a free and open-source cross-platform web server software. Varnish Caching Varnish is a reverse caching proxy. |
| www.google.com | 22 | 1997-09-15 | 2015-05-10 | 2026-08-09 | 2.0 KB | 57.0 KB | 142.251.153.119 | |
| www.googletagmanager.com | 283 | 2011-11-11 | 2012-10-04 | 2026-08-09 | 3.9 KB | 2.12 MB | 142.250.178.72 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |
| static.klaviyo.com | 17868 | 2012-03-29 | 2018-04-18 | 2026-08-11 | 552 B | 10.4 KB | 151.101.66.133 | Nginx Web servers, Reverse proxies Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. Varnish Caching Varnish is a reverse caching proxy. |
| paapi517.d41.co | 3561640 | 2014-07-09 | 2026-05-07 | 2026-08-05 | 524 B | 0 B | Not recorded | |
| d1igp3oop3iho5.cloudfront.net | N/A | 2008-04-25 | 2015-06-13 | 2026-08-08 | 498 B | 125.7 KB | 143.204.238.14 | Amazon Web Services PaaS Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality. Amazon CloudFront CDN Amazon CloudFront is a fast content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency, high transfer speeds. Amazon S3 CDN Amazon S3 or Amazon Simple Storage Service is a service offered by Amazon Web Services (AWS) that provides object storage through a web service interface. |
| player.vimeo.com | 132 | 2004-12-15 | 2013-09-26 | 2026-08-10 | 1.3 KB | 49.1 KB | 162.159.138.60 | Varnish Caching Varnish is a reverse caching proxy. Amazon S3 CDN Amazon S3 or Amazon Simple Storage Service is a service offered by Amazon Web Services (AWS) that provides object storage through a web service interface. Amazon Web Services PaaS Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality. HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Cloudflare CDN Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. Cloudflare Bot Management Security Cloudflare bot management solution identifies and mitigates automated traffic to protect websites from bad bots. |
| spider.australiarevival.com | 1435678 | 2021-05-31 | 2021-12-05 | 2026-08-05 | 495 B | 137.2 KB | 108.157.229.82 | Amazon CloudFront CDN Amazon CloudFront is a fast content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency, high transfer speeds. Amazon Web Services PaaS Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality. Caddy Web servers Not recorded |
| cdn-0.d41.co | 198708 | 2014-07-09 | 2016-11-29 | 2026-08-11 | 469 B | 90.8 KB | 65.9.62.52 | Amazon Web Services PaaS Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality. Amazon CloudFront CDN Amazon CloudFront is a fast content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency, high transfer speeds. Amazon S3 CDN Amazon S3 or Amazon Simple Storage Service is a service offered by Amazon Web Services (AWS) that provides object storage through a web service interface. |
| vod-adaptive-ak.vimeocdn.com | 36736 | 2010-04-21 | 2024-05-07 | 2026-08-13 | 3.6 KB | 517.1 KB | 23.33.119.131 | |
| f.vimeocdn.com | 25524 | 2010-04-21 | 2014-04-09 | 2026-08-12 | 1.4 KB | 1.11 MB | 151.101.64.217 | Varnish Caching Varnish is a reverse caching proxy. |