Cybersecurity Rating
by ImmuniWeb® CyberScore™

Hostname	URL	Grade	Tested on
ringcentral.com	https://www.ringcentral.com/	A+	October 5th, 2026 11:09
www.ringcentral.com	https://www.ringcentral.com/	A+	October 5th, 2026 11:09
www-cf.ringcentral.com	https://www-cf.ringcentral.com/%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://%22https://www.ringcentral.com%22	C+	October 5th, 2026 11:06
edcs-eu.ringcentral.com	https://edcs-eu.ringcentral.com/	A-	October 5th, 2026 11:06
shard1-us3.messaging.digital.ringcentral.com	https://shard1-us3.messaging.digital.ringcentral.com/	A	October 5th, 2026 11:06

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Website Privacy Rating | Overview

The total number of subdomains is capped at 50.

Hostname	URL	Grade	Tested on
ringcentral.com	https://www.ringcentral.com/	F	October 5th, 2026 11:37
www.ringcentral.com	https://www.ringcentral.com/	B+	October 5th, 2026 11:37
www-cf.ringcentral.com	https://www-cf.ringcentral.com	N	October 5th, 2026 11:37
edcs-eu.ringcentral.com	https://edcs-eu.ringcentral.com/	A+	October 5th, 2026 11:37
shard1-us3.messaging.digital.ringcentral.com	https://shard1-us3.messaging.digital.ringcentral.com/	A+	October 5th, 2026 11:37

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Show 46 More

SSL Security Rating | Overview

The total number of subdomains is capped at 50.

Hostname	URL	Protocol	Grade	Tested on
ringcentral.com	https://ringcentral.com 66.81.247.250:443	HTTPS	A	October 5th, 2026 10:52
www.ringcentral.com	https://www.ringcentral.com 66.81.247.250:443	HTTPS	A	October 5th, 2026 10:58
www-cf.ringcentral.com	https://www-cf.ringcentral.com 66.81.247.250:443	HTTPS	A	October 5th, 2026 10:57
edcs-eu.ringcentral.com	https://edcs-eu.ringcentral.com 18.195.193.174:443	HTTPS	B	October 5th, 2026 10:59
shard1-us3.messaging.digital.ringcentral.com	https://shard1-us3.messaging.digital.ringcentral.com 3.33.169.110:443	HTTPS	B+	October 5th, 2026 10:57

Show 46 More

Email Security Rating | Overview

Hostname	Grade	Tested on
ringcentral.com	B+	October 5th, 2026 10:54

Email Server Security Report
A total of 2 email servers were analyzed. Open relay was not detected, SMTP enumeration was not detected, a secure authentication was enforced across all tested servers, and PTR records were properly configured. The average response latency was approximately 0.03s.
Email SSL/TLS Encryption Report
SSL/TLS security testing was completed for 2 email servers. Server grade is C+.
Email Server DNS Security Report
SPF is set with issues, DKIM is set properly, and DMARC is set properly. MTA-STS is not configured for this domain. A and MX DNS records are unsigned.
Email Server Black and Spam Lists Report
No email servers were found on blacklists.

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GenAI Exposure Rating

No vibe-coded or AI-created code patterns detected across 51 websites.
No leaks of AI tokens or other AI-related and sensitive data detected on the Dark Web.
No leaks of AI tokens or other AI-related and sensitive data detected across 50 websites.

Dark Web and Threat Exposure Rating | Overview

Hostname	Tested on
ringcentral.com	October 5th, 2026 10:51

Dark Web Exposure Report
A total of 555 dark web incidents detected, containing 5542 mentions of the domain. 434 out of 555 incidents originate from Compromised Databases. Out of all detected Compromised Credentials, 273 are considered to be of High risk. Mentions in Leaked Databases represent the most common source of compromised information, accounting for 5209 of the 5542 detected domain mentions on the Dark Web.
Unprotected Cloud Storage Report
A total of 44 buckets detected across 3 cloud storage providers: 21 buckets were detected in Amazon S3; 16 buckets were detected in Azure Storage; 7 buckets were detected in Google Cloud Storage.
Phishing Websites Report
3 potential phishing URLs detected. Example hostnames: ringcentral.shop and ringcentral.systems; the full list is available in the detailed report.
Cybersquatting Domains Report
68 potential cybersquatting domains detected. Example domains: ringcentralweb.com, ringcentralstudio.com and ringcentralpromo.com; additional cybersquatting domains are available in the detailed report.
Typosquatting Domains Report
4 potential typosquatting domains detected. Example domains: ringcentral.cm, ringcentra.com and reingcentral.com; additional typosquatting domains are available in the detailed report.
Fake Accounts in Social Media Report
8 squatted social network accounts detected across 3 social networks. Most affected social networks include WordPress with 6 accounts including ringcentraldiscount.wordpress.com and ringcentralreview.wordpress.com, YouTube with 1 account including @ringcentralau and Blogspot with 1 account including ringcentral1.blogspot.com; the full list is available in the detailed report.

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