Bibliotheque Nacional de France Crawler
Bibliotheque Nacional de France Crawler is a search-engine crawler operated by Biblioth Que Nationale De France. Its job is to find, fetch, and index web pages so they can be returned in organic search results.
Traffic is regular and bounded by your robots.txt. Allowing it is generally how your site stays discoverable through the corresponding search engine, blocking it almost always reduces visibility there.
For most sites, search-engine crawlers are still the largest source of bot traffic and the largest source of human visitors that follow.
See Bibliotheque Nacional de France Crawler on your own site
Match the User-Agent header on incoming requests against the pattern below.
regex
For higher confidence, also verify the source IP against the operator's published ranges. UA strings can be spoofed; IP ownership is harder to fake.
The polite way is a robots.txt rule. Compliant agents respect it; the others ignore it.
robots.txt
Test a URL
Paste any URL on your site and we'll fetch its robots.txt to check whether Bibliotheque Nacional de France Crawler is allowed.
Renders JavaScript
No
IP verification
DNS reverse lookup
Crawl frequency
Continuous
Honors robots.txt
Yes
Honors Crawl-delay
Yes
The Biblioth Que Nationale De France bot family
See moreBiblioth Que Nationale De France runs 2 bots in total. Each one is a separate user-agent so you can allow or block them independently.
Search Engine
1- Bibliotheque Nacional de France CrawlerYou are here
Web Archiver
1Should I let Bibliotheque Nacional de France Crawler through?
In most cases, yes. Blocking traditional search crawlers reduces organic-search visibility. Allowing is the default for almost all sites. If volume gets noisy, rate-limit it before you block it outright.
Does blocking Bibliotheque Nacional de France Crawler affect my Google rankings?
Only on Biblioth Que Nationale De France Bibliotheque Nacional de France Crawler feeds. Each search engine runs its own crawler, so blocking Bibliotheque Nacional de France Crawler only removes you from that one index. Your visibility on Google, Bing, or anything else is untouched.
How do I confirm a request is really from Bibliotheque Nacional de France Crawler?
Look at the User-Agent header in your access logs and match it against the strings listed above. Worth knowing that the User-Agent is easy to fake, so this check tells you "the traffic claims to be Bibliotheque Nacional de France Crawler", not "the traffic is genuinely Bibliotheque Nacional de France Crawler". If you need stronger guarantees, look for a reverse-DNS check or wait for Biblioth Que Nationale De France to publish IP ranges.
What happens to my traffic if I block Bibliotheque Nacional de France Crawler?
Your pages drop out of Biblioth Que Nationale De France's index, which means losing the organic share you get from that engine. Not catastrophic if Biblioth Que Nationale De France is a minor player, much more painful if it's a meaningful source of your traffic. Check your analytics for Biblioth Que Nationale De France's actual referral share before deciding.
How is Bibliotheque Nacional de France Crawler different from Biblioth Que Nationale De France's other bots?
Biblioth Que Nationale De France splits work across multiple user-agents so site owners can decide on each one independently. Training crawlers, live-fetch agents, search indexers, and agentic browsers each get their own name. Worth scanning the rest of the Biblioth Que Nationale De France family above to see which ones actually matter for your site.
What's the cleanest way to control Bibliotheque Nacional de France Crawler?
Two layers. Robots.txt for the polite crawlers that read it, and rules at your CDN or edge for the ones that don't. Rankly's Agent Experience handles both from a single config, so you can allow, block, rate-limit, or serve a stripped-down version per bot. Agent Analytics handles the observation half so you know which bots are actually worth a rule.