Enterramon’s Bots
What They Are, Why They Visit, and What To Do About It
If you have seen one of the user-agents below in your server logs or WAF alerts, this page explains exactly what it is, where it comes from, and how to handle it. Enterramon is a website performance and monitoring service built and operated by EnterraHost. Every check it runs comes from one of four named bots, all documented here.
None of them is a search engine crawler and none indexes content. They do 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 Four Bot Systems
Four bot systems send six user-agent strings — the mini-tools and SEO systems each use more than one string depending on the task. Every string is listed below.
The full user-agent string used by the monitoring poller is:
EnterraMon-Poller/1.0 (Site Status Check; +https://enterramon.com/bot)This is the bot behind paid monitoring subscriptions. It checks whether a site is up or down, watches SSL certificates and WHOIS expiry, and feeds the results into the alerts and reports subscribers receive. It runs on a schedule from dedicated poller servers in the region assigned to the monitored site, so a site hosted in North America is checked from North America rather than from the other side of the world.
You will only see this user-agent if your site is enrolled in a paid monitoring subscription. To block it, robots.txt supports User-agent: EnterraMon-Poller. To keep monitoring working, allow the user-agent above in your WAF or firewall, and where possible the poller server IPs for your region.
The full user-agent string used by the audit bot is:
EnterraMon-Tester/1.0 (Site Audit; +https://enterramon.com/bot)This bot runs the full site audit someone triggers through the free tool at enterramon.com. It loads the page the way a visitor would, from one of five regional test servers, and measures load performance, SSL status, server response time, and SEO signals. The check is nonrecurring and nondestructive.
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. It respects User-agent: EnterraMon-Tester in robots.txt.
The SEO tool crawler uses two user-agent strings, one for on-page audits and site crawls, one for link checks:
EnterraMon-SEO/1.0 (SEO Crawl & Audit; +https://enterramon.com/bot)
EnterraMon-SEO/1.0 (Link Checker; +https://enterramon.com/bot)This is the crawler behind the SEO tool, used for on-page audits, site crawls, and broken-link checks. It respects User-agent: EnterraMon-SEO in robots.txt.
The free utilities on enterramon.com — ping, traceroute, DNS lookup, server check, MAC lookup, robots.txt tester and the rest — make lightweight one-off checks against the domain you give them. Each carries the family name plus a per-tool suffix, for example:
EnterraMon-MiniTools/1.0 (Robots Tester; +https://enterramon.com/robots-txt-tester/)
EnterraMon-MiniTools/1.0 (MAC Lookup; +https://enterramon.com/mac-address-lookup/)These are infrastructure checks rather than content crawls, so they do not parse robots.txt beyond what the robots.txt tester itself does.
robots.txt Compliance
Enterramon respects the robots.txt standard. Before running any check that touches content, the bot fetches and parses your site’s robots.txt file. Any of the following directives will prevent the corresponding bot from proceeding:
User-agent: EnterraMon-Poller
Disallow: /
User-agent: EnterraMon-Tester
Disallow: /
User-agent: EnterraMon-SEO
Disallow: /The wildcard rule is also honoured. A User-agent: * directive with Disallow: / will block the bots in the same way.
If the robots.txt file cannot be fetched due to a timeout or server error, the bots follow a fail-open approach and proceed 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 strings above.
For EnterraMon Pro Subscribers
If you are a paid EnterraMon Pro subscriber, the monitoring poller will visit your site on a scheduled basis from a set of dedicated poller servers in your region. 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-Poller/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].
Free Tool and Global Analytics
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 checks per domain per day and ten checks per user per day. 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, 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 has accessed your site in error, or if you have questions about any of the bots’ behaviour, reach out directly:
