EnterraMon-Pro/1.0

What It Is, Why It Visits, and What To Do About It

If you have seen EnterraMon-Pro/1.0 in your server logs or WAF alerts, this page explains exactly what it is, where it comes from, and how to handle it. Enterramon Pro is a website performance and health monitoring service built and operated by EnterraHost. The bot is used to run structured checks against websites — covering load performance, SSL certificate status, server response time, SEO signals, and standard file availability such as robots.txt and sitemap.xml.

Enterramon Pro is not a search engine crawler and does not index content. It does not visit sites speculatively or at random. Every check is either triggered on demand by a user through the free tool at enterramon.com, or executed automatically as part of a paid EnterraMon Pro monitoring subscription. A customer who adds a domain to be monitored by Enterramon needs to verify the domain ownership via TXT DNS records, File, or Header verification.

The full user-agent string used by the EnterraMon Pro bot is:

EnterraMon-Pro/1.0 (Site Status Check; +https://enterramon.com/bot)

This user-agent will only appear in your logs if your site is enrolled in a paid EnterraMon Pro monitoring subscription. The on-demand free tool at enterramon.com runs checks under the same infrastructure but the persistent, scheduled polling, the kind that generates recurring log entries is exclusive to paid plans.

If you are seeing this user-agent and are not a subscriber, it is likely that someone has run a one-off check against your domain through the free tool. That check is nonrecurring and nondestructive.

Enterramon Pro respects the robots.txt standard. Before running any on-demand check, the bot fetches and parses your site’s robots.txt file. Either of the following directives will prevent the bot from proceeding:

User-agent: EnterraMon-Pro
Disallow: /

The wildcard rule is also honoured. A User-agent: * directive with Disallow: / will block the bot in the same way.

If the robots.txt file cannot be fetched due to a timeout or server error, the bot follows a fail-open approach and proceeds with the check. This prevents temporary server issues from blocking legitimate users of the free tool.

To block at the network level, configure your web server, WAF, or CDN to deny requests carrying the user-agent string above.

If you are a paid EnterraMon Pro subscriber, the monitoring bot will visit your site on a scheduled basis from a set of dedicated poller servers. To ensure reliable monitoring and notifications when things go wrong with your site you should configure your WAF or firewall to allow requests from the EnterraMon-Pro/1.0 user-agent and, where possible, from the poller server IP addresses assigned to your selected region.

The IP addresses for your region’s poller infrastructure are included in the welcome email sent when your subscription is activated. If poller IPs are added or changed over time for example when new regions come online or existing infrastructure is updated you will be notified by email.

If you have not received your poller IP list, or if you need to request it, contact us at [email protected].

The free on-demand tool at enterramon.com allows anyone to run a single-region performance, SEO, and security check against any domain, up to five times per domain or 50 checks per 24 hour period. Checks are not automatically recurring.

As checks accumulate across the platform, anonymised and aggregated performance data is published openly on the Global Analytics Page. This dataset covers real-world load times, FTTB, SSL status, and SEO signal trends across domains tested through the platform. No individual site data is exposed without the site owner’s consent.

If you believe Enterramon Pro has accessed your site in error, or if you have questions about the bot’s behaviour, reach out directly:

[email protected]