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What are the whitelisted network endpoints and email domains?

HackerEarth uses certain third-party services to ensure high availability, security, and optimal platform performance.

Network domain whitelisting

Enterprises use services like DLP, VPN, CASB, and other data protection services to avoid data leaks from individual devices. Some of these block a few endpoints that are critical for the smooth functioning of the HackerEarth platform. 

The following table has been created to highlight the various endpoints that should be whitelisted/allowed/exempted. These endpoints are managed services that have already been included as part of HackerEarth’s Data Protection Annexure and are GDPR compliant.

HackerEarth product

Network domains

Why

All HackerEarth products

[Assessments, Hiring Challenges, Hackathons, FaceCode]

*.hackerearth.com

This is the primary domain. The platform would not work if this is not accessible.

 

*.googletagmanager.com

This is required to support analytics.

 

www.gstatic.com

www.google.com

This is required for Recaptcha.

 

cdn.mxpnl.com

api-js.mixpanel.com

This is required for product analytics.

 

*.hubspot.com

static.hsappstatic.net

This is required to access the support widget - HubSpot.

 

wss://global.events.live-video.net

*.live-video.net

This is required for Audio proctoring and Video question type features.

 

Open UDP ports 3478 and 19302

This is required for audio/video streaming.

 

Open UDP Port 3478

Open TCP port 443

Opening these ports will enhance the overall audio/video quality on the platform.

 

*.zoom.us, *.zoom.com, zoom.us,

TCP Port 80, 443

UDP Port 3478, 3479, 8801-8810

This is required for audio/video streaming in FaceCode.

Email sender whitelisting

To ensure reliable delivery of important emails from HackerEarth (such as candidate assessment or interview invites, reports, and other notifications), you may need to whitelist our sender address within your email infrastructure.

Corporate mail gateways, security systems, and spam filters can sometimes block or filter emails based on internal security or spam policies. Whitelisting prevents these emails from being marked as spam or filtered.

Email address Why How
support@hackerearth.com This ensures that emails from HackerEarth Support are not marked as spam or blacklisted. Whitelisting can be done at the mail gateway, corporate spam filter, or individual mailbox level, depending on your organization’s setup.

Optional guidelines

  • You can add support@hackerearth.com to your email allowlist/safe sender list.
  • If using an enterprise spam filter (Proofpoint, Mimecast, Barracuda, etc.), add support@hackerearth.com to the approved source list.
  • For inbound delivery reliability, consider also allowing the email domain @hackerearth.com.

Email whitelisting must be configured within your email infrastructure or spam-filter settings. It is separate from network or endpoint whitelisting.