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substackcdn.com

Apr 12th 2027 05:23 PM

Amazon Registrar, Inc.

unsigned

Yes

May 15th 2026 08:55 PM

This Script. Substackcdn.com appears to be a content delivery network (CDN) used by the newsletter platform Substack. It's registered in 2022 and officially associated with Amazon Registrar, suggesting a legitimate connection to the well-established company.

Data on this page is collected by cside's crawler, which monitors third-party scripts across the public web.

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WHOIS Information
Registrar Amazon Registrar, Inc.
Registration: April 12th, 2022
Expires: April 12th, 2027
Updated: May 15th, 2026
Nameservers
ns-1445.awsdns-52.org. 205.251.197.165
ns-1936.awsdns-50.co.uk. 205.251.199.144
ns-946.awsdns-54.net. 205.251.195.178
ns-98.awsdns-12.com. 205.251.192.98
Meta Tags

No meta tags found.

SSL Certificate
Status:

Enabled

Expires: January 12th, 2027
Issuer:

substackcdn.com is one of thousands of third-party scripts on the web.

Most sites run dozens of third-party scripts and can't say what each one does. cside monitors every script on your site and catches the ones that change or turn malicious.

DNS Records
Hostname Type TTL Priority Content
substackcdn.com NS 172800
ns-1445.awsdns-52.org.
substackcdn.com NS 172800
ns-1936.awsdns-50.co.uk.
substackcdn.com NS 172800
ns-946.awsdns-54.net.
substackcdn.com NS 172800
ns-98.awsdns-12.com.
substackcdn.com A 39
65.8.54.32
substackcdn.com A 39
65.8.54.21
substackcdn.com A 39
65.8.54.129
substackcdn.com A 39
65.8.54.17
substackcdn.com AAAA 8
2600:9000:204d:fe00:4:b4b9:d3c0:93a1
substackcdn.com AAAA 8
2600:9000:204d:9c00:4:b4b9:d3c0:93a1
substackcdn.com AAAA 8
2600:9000:204d:1e00:4:b4b9:d3c0:93a1
substackcdn.com AAAA 8
2600:9000:204d:d600:4:b4b9:d3c0:93a1
substackcdn.com AAAA 8
2600:9000:204d:8600:4:b4b9:d3c0:93a1
substackcdn.com AAAA 8
2600:9000:204d:8800:4:b4b9:d3c0:93a1
substackcdn.com AAAA 8
2600:9000:204d:6c00:4:b4b9:d3c0:93a1
substackcdn.com AAAA 8
2600:9000:204d:6e00:4:b4b9:d3c0:93a1
substackcdn.com TXT 172800
"google-site-verification=tz2v--AUiNuSpVyU440dvghhnTS9kVnvhIWn69muzgs"
substackcdn.com SOA 900
ns-98.awsdns-12.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400

FAQ

Frequently Asked Questions

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This domain is analyzed as part of cside's domain directory to identify third-party scripts and their purposes. The summary provides information about what services, tools, or scripts this domain hosts, helping website owners understand which third-party services are being loaded on their sites.

The risk score is calculated based on multiple security factors including SSL certificate validity, DNSSEC status, domain registration details, and historical security data. A higher score indicates lower risk, while a lower score suggests potential security concerns that should be investigated.

The SSL certificate information shows whether the domain uses HTTPS encryption, when the certificate was issued, when it expires, and who issued it. This helps verify the domain's security posture and identify potential certificate-related vulnerabilities that could affect your website's security.

Third-party script domains can be compromised or used maliciously. By monitoring domain information like registration details, SSL certificates, and DNS records, you can identify suspicious changes, expired certificates, or domains that may pose security risks to your website and users.

Domain information is regularly scanned and updated to provide the most current security intelligence. The last scanned timestamp shows when the most recent analysis was performed, ensuring you have up-to-date information about the domain's security status.

If you identify a high-risk domain loading scripts on your website, you should investigate why it's being used, verify its legitimacy, and consider removing or replacing it if it's not essential. Use cside's platform to monitor and block suspicious third-party scripts to protect your users from potential security threats.

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