🤖 Overview

SEBot-WA is a web crawler operated by SEMrush, a digital marketing intelligence company headquartered in Boston, Massachusetts. Its primary purpose is to collect publicly accessible web content for SEMrush’s SEO, competitive analysis, and domain analytics products. The crawler gathers data such as on-page elements, backlink profiles, keyword rankings, and site structure to populate the SEMrush dashboard and reports. Officially documented in SEMrush’s support articles and robots.txt guidelines, the bot is considered a legitimate, commercially oriented crawler.

🌐 Technical Behavior

SEBot-WA operates with a relatively aggressive crawl cadence, often making multiple requests per second from a distributed pool of IP addresses. The bot prioritizes crawling of newly published or updated content, revisiting pages on intervals ranging from 24 hours to several weeks based on site authority and update frequency. Requests are made over HTTP/1.1 and HTTP/2, with a default User-Agent string of “Mozilla/5.0 (compatible; SEBot-WA/1.0; +https://www.semrush.com/bot/)” and supporting the Accept-Encoding: gzip header. SEMrush publishes its IP ranges in the form of a dedicated IP range list, which includes both IPv4 and IPv6 addresses. These ranges are documented on SEMrush’s official crawler page at https://www.semrush.com/crawler/.

📋 robots.txt Compliance

Based on SEMrush’s publicly stated policy and user‑agent specific documentation, SEBot‑WA fully respects robots.txt directives. The crawler reads the Disallow rules at the start of each crawl session and will not fetch any URLs or paths explicitly excluded. However, SEMrush notes that if a site restricts the bot heavily, the crawler may stop sending further requests entirely. Compliance is verified via periodic testing by webmasters and SEMrush’s own support articles.

🔍 Detection Indicators

The primary detection indicator is the User‑Agent string: “Mozilla/5.0 (compatible; SEBot-WA/1.0; +https://www.semrush.com/bot/)” or variants such as “SEBot‑WA/1.0”. The bot also sends a non‑standard header “SEMrush‑Bot: true” in some requests, though this is not guaranteed. Reverse DNS lookups on IPs of the crawler typically resolve to hosts within the `*.semrush.com` domain. A behavioral fingerprint is a high request rate (often >10 requests per second per IP from a single subnet) combined with a lack of JavaScript execution.

📊 Data Usage

Data collected by SEBot‑WA feeds into SEMrush’s suite of SEO tools: Domain Analytics, Keyword Magic Tool, Backlink Audit, and Site Audit. The crawled content—headings, meta tags, word counts, external links—is used to generate rankings, compare competitors, and identify SEO issues. SEMrush also uses the data to train its own proprietary ranking algorithms and content analysis models. All data is stored on SEMrush’s infrastructure and is not shared with third parties for AI training unrelated to SEMrush’s own services.

⚙️ Rate Limiting Policy

Although fully legitimate, SEBot‑WA can impose significant load due to its high request frequency and parallel crawling. Rate limiting with a threshold of 20–50 requests per minute per IP is recommended to protect server resources while still allowing the bot to index new content. SEMrush advises webmasters to block the bot only if it causes performance degradation, and suggests using dedicated rate‑limiting rules rather than outright blocking, as the crawler respects proper throttling.

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the bots listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.