What is BLEXBot?

BLEXBot is a bot in the SEO crawlers category, operated by WebMeUp.

Bot name
BLEXBot
Operator
WebMeUp
Category
SEO Crawlers
Type
Bot
Respects robots.txt
Yes
robots.txt user agent
BLEXBot
Signs requests (Web Bot Auth)
No

About BLEXBot

SEO PowerSuite Link Explorer (webmeup.com) is the world's freshest backlink index, and the primary source of backlink-related data for the SEO PowerSuite tools. We're dedicated to providing SEOs with the most comprehensive, up-to-date backlink data on the Web.

SEO crawlers map links, keywords and technical issues for SEO tools and backlink databases. They help the tool's customers, often your competitors, rather than you. Rate limit or block the ones you do not use.

BLEXBot user agent

BLEXBot identifies itself with this user agent string:

  • Mozilla/5.0 (compatible; BLEXBot/1.0; +http://webmeup-crawler.com/)

Anyone can copy a user agent string. Transfon Security also checks where each request comes from, so a request that claims to be a known crawler but comes from the wrong network is treated as a fake, not as the real crawler.

How to block BLEXBot in robots.txt

BLEXBot follows robots.txt, so these rules stop it crawling the paths you choose. robots.txt is a plain text file at the root of your domain, such as https://example.com/robots.txt.

Block BLEXBot from the whole site

User-agent: BLEXBot
Disallow: /

Block BLEXBot from some folders

User-agent: BLEXBot
Disallow: /private/
Disallow: /search

Allow BLEXBot only on some folders

User-agent: BLEXBot
Allow: /blog/
Disallow: /

Allow BLEXBot and block other crawlers

User-agent: BLEXBot
Allow: /

User-agent: *
Disallow: /

Things to know

  • Each host needs its own file. Rules on www.example.com do not apply to shop.example.com.
  • A crawler obeys only the most specific group that names it. Once you add a User-agent: BLEXBot group, BLEXBot ignores your User-agent: * rules, so repeat any that should still apply.
  • The user agent name is not case sensitive. We take BLEXBot from BLEXBot's user agent; check WebMeUp's own documentation if it publishes a different robots.txt name.
  • Crawlers cache robots.txt, so changes can take up to a day to apply. Disallow stops crawling but does not remove pages already collected or indexed.

Limits of robots.txt

  1. BLEXBot may not follow the rule. BLEXBot says it follows robots.txt, but nothing enforces that. Changes can take a day to apply, the operator can change its policy, and other crawlers from WebMeUp use different names and rules.
  2. The user agent could be fake. robots.txt matches the name a request claims. Anyone can send BLEXBot's user agent, and a scraper using it is not bound by WebMeUp's robots.txt policy. Only checking the source network tells a real BLEXBot from a fake one.

Treat robots.txt as a statement of your policy, and enforce it where requests arrive.

Who should care about BLEXBot

Publishers

BLEXBot works for an SEO tool's customers, often your competitors. It adds server load without readers, so rate limit or block it unless you use the tool.

Transfon Security for publishers

Media buyers and advertisers

SEO crawlers map landing pages and links for competitor research. Keep BLEXBot's visits out of campaign data.

Transfon Security for advertisers

E-commerce

BLEXBot can map your catalogue, prices and site structure for competitors. Block it unless you use the tool yourself.

Transfon Security for e-commerce

SaaS and APIs

Allow BLEXBot only if your team uses the tool; otherwise rate limit it on docs and marketing pages.

Transfon Security for SaaS and APIs

Block BLEXBot with Transfon Security

robots.txt is a request, not an enforcement. Transfon Security shows BLEXBot by name in the Top Bots report, so you can see how often it visits and which pages it reads. Block or allow it with a User Agent rule, or slow it down with a rate limit decision rule.

Transfon Security

Control BLEXBot on your site

  • See every BLEXBot visit and the pages it reads
  • Spot bots that fake trusted crawler names
  • Block, allow or rate limit BLEXBot with one rule
  • Works with or without robots.txt support

Frequently asked questions

What is BLEXBot?

BLEXBot is a bot in the SEO crawlers category, operated by WebMeUp. SEO PowerSuite Link Explorer (webmeup.com) is the world's freshest backlink index, and the primary source of backlink-related data for the SEO PowerSuite tools. We're dedicated to providing SEOs with the most comprehensive, up-to-date backlink data on the Web.

Does BLEXBot respect robots.txt?

Yes. BLEXBot follows robots.txt, so a Disallow rule for the BLEXBot user agent stops it from crawling the paths you list.

How do I block BLEXBot?

Add "User-agent: BLEXBot" followed by "Disallow: /" to the robots.txt file at the root of your site. To enforce it, block requests whose user agent contains "BLEXBot" at your WAF. In Transfon Security that is one User Agent block rule.

Is robots.txt enough to block BLEXBot?

No. robots.txt is voluntary, so BLEXBot may not follow it, and anyone can send BLEXBot's user agent, so a fake BLEXBot ignores your rule. Enforce the rule where requests arrive, at your WAF, and check the source network.

Should I block BLEXBot?

SEO crawlers map links, keywords and technical issues for SEO tools and backlink databases. They help the tool's customers, often your competitors, rather than you. Rate limit or block the ones you do not use.

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Transfon Security identifies every bot in this directory in your traffic reports, flags fake search crawlers, and lets you allow, block or rate limit each bot.

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