DigiCert UltraDNS Sinkholed
VerdictMalicious
Severitymedium
WEBSITE ANALYSIS REPORT
https://calendly.com/reviewrsoftware/reviewr-platform-discussion-2026
public
Report summary
Submitted and final observations · captured HTTP activity
- Submitted URL
- https://calendly.com/reviewrsoftware/reviewr-platform-discussion-2026
- Submitted IP / ASN
172.64.146.81 AS13335 · Cloudflare, Inc.
- Final URL
- https://calendly.com/reviewrsoftware/reviewr-platform-discussion-2026?month=2026-10
- Final IP / ASN
- 104.18.41.175 AS13335 · CLOUDFLARENET
Final page
- Page title
- Select a Date & Time - Calendly
- Final DOM MIME
- text/html; charset=utf-8
- Final DOM size
- 174.3 KB (178508 bytes)
Detections
Activity
- HTTP requests
- 56
- Observed hosts
- 18
- Script records
- 21
Estimated HTTP data
- Sent
- ~51.1 KB
- Received
- ~14.14 MB
Page capture
Final browser state
Detection signals
URLQuery findings, Threat Detection Systems, and IDS alerts
Threat Detection Systems
1Host infrastructure
Observed hosts are context, not independent maliciousness verdicts
| Host | Rank | Registered | First seen | Last seen | Sent | Received | IP | Fingerprints |
|---|---|---|---|---|---|---|---|---|
| js.stripe.com | 7985 | 1995-09-12 | 2012-09-30 | 2026-10-05 | 1.6 KB | 1.08 MB |  65.9.62.25 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. 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. Stripe Payment processors Stripe offers online payment processing for internet businesses as well as fraud prevention, invoicing and subscription management. |
| fonts.gstatic.com | N/A | 2008-02-11 | 2014-04-02 | 2026-10-04 | 1.1 KB | 80.0 KB | 142.250.178.99 | |
| m.stripe.network | 9008 | 2017-03-16 | 2017-05-17 | 2026-10-05 | 1.0 KB | 89.7 KB | 151.101.192.176 | Varnish Caching Varnish is a reverse caching proxy. Fastly CDN Fastly is a cloud computing services provider. Fastly's cloud platform provides a content delivery network, Internet security services, load balancing, and video & streaming services. HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |
| www.googletagmanager.com | 283 | 2011-11-11 | 2012-10-04 | 2026-10-04 | 1.4 KB | 1001.3 KB | 142.250.178.72 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |
| www.recaptcha.net | 7582 | 2007-01-06 | 2012-07-11 | 2026-09-28 | 2.0 KB | 57.0 KB | 142.250.178.99 | |
| cloudflare-dns.com 1 alerts | 112 | 2018-03-28 | 2015-04-09 | 2026-09-28 | 551 B | 0 B | Not recorded | |
| assets.calendly.com | 89318 | 2013-02-26 | 2018-10-07 | 2026-10-01 | 3.9 KB | 8.46 MB | 104.18.41.175 | 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. 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. |
| calendly.com | 556 | 2013-02-26 | 2014-01-10 | 2026-10-04 | 20.0 KB | 146.2 KB | 104.18.41.175 | 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. 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. Calendly Appointment scheduling Calendly is an app for scheduling appointments, meetings, and events. Ruby on Rails Web frameworks Ruby on Rails is a server-side web application framework written in Ruby under the MIT License. Ruby Programming languages Ruby is an open-source object-oriented programming language. |
| m.stripe.com | 7920 | 1995-09-12 | 2017-01-30 | 2026-09-28 | 1.7 KB | 2.2 KB | 52.40.196.145 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. 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. |
| geolocation.onetrust.com | 4022 | 2004-01-12 | 2018-02-07 | 2026-10-05 | 491 B | 436 B | 104.18.32.137 | 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. |
| accounts.google.com | 103 | 1997-09-15 | 2012-05-23 | 2026-10-05 | 914 B | 537.0 KB | 172.253.148.84 | |
| dfp.calendly.com | 208430 | 2013-02-26 | 2024-12-16 | 2026-10-02 | 543 B | 250 B | 99.83.159.105 | |
| prodregistryv2.org | 1204 | 2024-04-19 | 2024-05-08 | 2026-09-27 | 1.3 KB | 511 B | Not recorded | Google Cloud IaaS Google Cloud is a suite of cloud computing services. Google Cloud CDN CDN Cloud CDN uses Google's global edge network to serve content closer to users. |
| notifier-configs.airbrake.io | 66184 | 2011-09-06 | 2022-12-04 | 2026-10-03 | 782 B | 343 B | 34.197.103.195 | |
| cdn.cookielaw.org | 2972 | 2011-06-20 | 2013-12-28 | 2026-10-05 | 5.1 KB | 938.4 KB | 104.18.87.42 | 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. |
| www.gstatic.com | 146047 | 2008-02-11 | 2012-05-29 | 2026-10-04 | 2.1 KB | 1.70 MB | 142.250.178.99 | |
| www.google.no | 92680 | 2001-02-26 | 2012-06-26 | 2026-10-05 | 846 B | 578 B | 142.250.178.99 | |
| featureassets.org | 3576 | 2024-04-19 | 2024-05-08 | 2026-09-29 | 675 B | 121.7 KB | 34.128.128.0 | 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. Statsig Analytics, Feature management Statsig is a modern product experimentation platform that helps product teams continuously measure impact of every single feature they launch. |