URL Inspection: https://b.shared-423-default.ssl.fastly.net

Open Cached · just now

DOWN

HTTP Status

500

Ping

2 ms

Technologies

8

Technologies Detected

Infrastructure & Network (4)

CDN	Fastly Fastly is a modern content delivery network and edge cloud platform that provides real-time content delivery, security, and edge computing services.
Description: Fastly is a modern content delivery network and edge cloud platform that provides real-time content delivery, security, and edge computing services. It's known for its real-time purging capabilities, edge computing with Varnish, and support for modern web technologies and APIs. View full details
Evidence: • Subdomain www.fastly.net: CNAME: Reverse DNS: fastly.net • IP 146.75.37.167 → ASN 54113 (Fastly)

Email Provider	Google Workspace Google Workspace (formerly G Suite) provides business email hosting using Gmail's infrastructure.
Description: Google Workspace (formerly G Suite) provides business email hosting using Gmail's infrastructure. It offers custom domain email addresses, large storage capacity, advanced spam filtering, and integration with Google's productivity suite. View full details
Evidence: • DNS Record MX: aspmx.l.google.com (root domain: fastly.net) • DNS Record MX: alt1.aspmx.l.google.com (root domain: fastly.net) • DNS Record MX: aspmx.l.google.com • DNS Record MX: alt1.aspmx.l.google.com

Registrar	MarkMonitor MarkMonitor is a domain registrar and brand protection company that specializes in enterprise domain management and brand security.
Description: MarkMonitor is a domain registrar and brand protection company that specializes in enterprise domain management and brand security. It provides domain registration, domain portfolio management, brand monitoring, and anti-counterfeiting services for large corporations. View full details
Evidence: • WHOIS Registrar: MarkMonitor Inc. MarkMonitor, Inc.

Web Server	Varnish Varnish Cache is a high-performance HTTP accelerator and reverse proxy designed for content-heavy dynamic websites.
Description: Varnish Cache is a high-performance HTTP accelerator and reverse proxy designed for content-heavy dynamic websites. It sits in front of web servers and caches HTTP responses, significantly improving website performance and reducing server load. Varnish is widely used for content delivery and caching. View full details
Evidence: • Header Server: Varnish • Header Via: 1.1 varnish

Security & Privacy (1)

Security	Valimail Valimail is an email authentication and anti-phishing platform that helps organizations implement and manage email authentication standards like DMARC, SPF, and DKIM.
Description: Valimail is an email authentication and anti-phishing platform that helps organizations implement and manage email authentication standards like DMARC, SPF, and DKIM. It provides automated DMARC enforcement and monitoring to protect against email spoofing and improve email deliverability. View full details
Evidence: • DMARC RUA: mailto:dmarc_agg@vali.email

SSL & Certificates (3)

Certificate Authority	Certainly Certainly is a certificate authority operated by Fastly that provides SSL/TLS certificates for Fastly's CDN and edge computing services.
Description: Certainly is a certificate authority operated by Fastly that provides SSL/TLS certificates for Fastly's CDN and edge computing services. It offers automated certificate provisioning and management integrated with Fastly's platform. View full details
Evidence: • DNS Record CAA: certainly.com;validationmethods=dns-01 (root domain: fastly.net)

Certificate Authority	GlobalSign GlobalSign is a certificate authority that provides SSL/TLS certificates, code signing certificates, and PKI solutions.
Description: GlobalSign is a certificate authority that provides SSL/TLS certificates, code signing certificates, and PKI solutions. It offers various certificate types with strong security features and is trusted by major browsers and operating systems. View full details
Evidence: • DNS Record CAA: globalsign.com (root domain: fastly.net) • DNS Record TXT: _globalsign-domain-verification=iMFiEKAQWWdcbAGDBD-bSrJbX4attYpnGIVm4MyJz8 (root domain: fastly.net) • DNS Record TXT: _globalsign-domain-verification=iMFiEKAQWWdcbAGDBD-bSrJbX4attYpnGIVm4MyJz8 (root domain: fastly.net) • DNS Record TXT: _globalsign-domain-verification=iMFiEKAQWWdcbAGDBD-bSrJbX4attYpnGIVm4MyJz8 • DNS Record TXT: _globalsign-domain-verification=iMFiEKAQWWdcbAGDBD-bSrJbX4attYpnGIVm4MyJz8 ... and 1 more

Certificate Authority	Let's Encrypt Let's Encrypt is a free, automated, and open certificate authority run by the Internet Security Research Group (ISRG).
Description: Let's Encrypt is a free, automated, and open certificate authority run by the Internet Security Research Group (ISRG). It provides free SSL/TLS certificates to enable encrypted HTTPS on websites, making web security accessible to everyone. It's one of the most widely used certificate authorities globally. View full details
Evidence: • DNS Record CAA: letsencrypt.org;validationmethods=dns-01 (root domain: fastly.net)

Metadata & SEO

Title

Fastly error: unknown domain b.shared-423-default.ssl.fastly.net

Domain Owner Information

View Full WHOIS

Registrar

MarkMonitor Inc. MarkMonitor, Inc.

Created

April 18, 2011

14 years 346 days old

Expires

April 18, 2027

1 years 21 days left

SSL/TLS Certificate

View Full SSL Report

Issued By

C=BE, O=GlobalSign nv-sa, CN=GlobalSign Atlas R3 DV TLS CA 2025 Q3

Security Score

73 /100

Network & Hosting

View DNS Records

146.75.37.167 • AS54113

Fastly

CNAME Record

This domain is an alias for:

Resources

No resources found

Inspected on April 19, 2026 at 15:35 UTC