DigiCert UltraDNS Sinkholed
VerdictMalicious
Severitymedium
WEBSITE ANALYSIS REPORT
http://frequencymeasurer.com/
public
Report summary
Submitted and final observations · captured HTTP activity
- Submitted URL
- http://frequencymeasurer.com/
- Submitted IP / ASN
104.21.43.9 AS13335 · Cloudflare, Inc.
- Final URL
- https://frequencymeasurer.com/
- Final IP / ASN
- 104.21.43.9 AS13335 · CLOUDFLARENET
Final page
- Page title
- Frequency Measurer — Measure Sound Frequency in Hz Online
- Final DOM MIME
- text/html; charset=utf-8
- Final DOM size
- 111.2 KB (113823 bytes)
Detections
Activity
- HTTP requests
- 83
- Observed hosts
- 15
- Script records
- 31
Estimated HTTP data
- Sent
- ~59.4 KB
- Received
- ~2.25 MB
Page capture
Final browser state
frequencymeasurer.com
Screenshot unavailableNo screenshot pixels areavailable for this report.
Detection signals
URLQuery findings, Threat Detection Systems, and IDS alerts
Threat Detection Systems
3Cloudflare DNS Sinkholed
VerdictMalicious
Severitymedium
DNS4EU Sinkholed
VerdictMalicious
Severitymedium
Host infrastructure
Observed hosts are context, not independent maliciousness verdicts
| Host | Rank | Registered | First seen | Last seen | Sent | Received | IP | Fingerprints |
|---|---|---|---|---|---|---|---|---|
| frequencymeasurer.com | N/A | 2026-08-16 | 2026-09-27 | 2026-09-27 | 12.7 KB | 1016.8 KB | 104.21.43.9 | LiteSpeed Cache Caching, WordPress plugins LiteSpeed Cache is an all-in-one site acceleration plugin for WordPress. LiteSpeed Web servers LiteSpeed is a high-scalability web server. 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. Litespeed Cache Caching, WordPress plugins LiteSpeed Cache is an all-in-one site acceleration plugin for WordPress. |
| bicea.org | N/A | N/A | N/A | N/A | 13.5 KB | 96.3 KB | 104.21.86.97 | 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. Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. |
| protrafficinspector.com | 614186 | 2025-06-18 | 2025-07-25 | 2026-09-24 | 500 B | 524 B |  63.189.110.29 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |
| fizzyacerbitymellow.com | N/A | 2026-02-02 | 2026-02-16 | 2026-09-26 | 15.0 KB | 37.9 KB | 172.240.127.243 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Nginx:1.28.2 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. Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. |
| aqml.org | N/A | 2026-09-11 | 2026-09-23 | 2026-09-23 | 480 B | 1.6 KB | 172.67.215.141 | 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. Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. |
| fonts.gstatic.com | N/A | 2008-02-11 | 2014-04-02 | 2026-09-20 | 2.2 KB | 149.6 KB | 142.250.178.99 | |
| cdn.show-sb.com 2 alerts | 187612 | 2024-08-20 | 2024-08-31 | 2026-09-26 | 518 B | 2.2 KB | 172.67.170.115 | jQuery JavaScript libraries jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax. 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. |
| mamshirt.com | N/A | 2023-04-14 | 2026-07-24 | 2026-09-18 | 521 B | 6.0 KB | 104.21.21.108 | Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. 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.bakestubborn.com 12 alerts | N/A | 2026-08-31 | 2026-08-31 | 2026-09-21 | 3.0 KB | 177.8 KB | 104.21.74.50 | 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. |
| afders.org | N/A | 2026-09-03 | 2026-09-27 | 2026-09-27 | 2.8 KB | 127.9 KB | 172.67.183.44 | Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. 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. |
| static.nresystems.com | N/A | 2001-02-22 | 2026-05-13 | 2026-09-26 | 1.3 KB | 2.4 KB | 104.18.19.137 | 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. Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. |
| fonts.googleapis.com | 313 | 2005-01-25 | 2012-05-23 | 2026-09-20 | 501 B | 27.9 KB | 142.250.178.106 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |
| portslocked.com | N/A | 2026-01-08 | 2026-01-24 | 2026-08-26 | 494 B | 45.9 KB | 172.240.127.244 | HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. Nginx:1.28.2 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. Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. |
| portalfluently.com 1 alerts | N/A | 2026-06-18 | 2026-06-19 | 2026-09-26 | 461 B | 37.6 KB |  23.111.84.4 | Nginx:1.30.2 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. Envoy Reverse proxies Envoy is an open-source edge and service proxy, designed for cloud-native applications. HSTS Security HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS. |
| cdn.storageimagedisplay.com | 170153 | 2024-09-13 | 2024-09-13 | 2026-09-25 | 5.3 KB | 569.0 KB | 45.133.44.1 | Nginx:1.21.6 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. |