01 · Operator
Who operates GenomeCrawlerd
- Company
- Nokia (Deepfield)
- Type
- Monitoring bot
- Official docs
- nokia.com
02 · Behavior
What GenomeCrawlerd does
It scans IPv4 and IPv6 address space on specific ports and may complete protocol handshakes. The data maps services and flags devices that can be abused for DDoS attacks. Nokia states it makes no attempts at unauthorized access.
03 · Impact
Why GenomeCrawlerd matters for your site
If you allow it
- Supports DDoS defense research
- Published IP ranges make it easy to verify
If you block it
- No search or referral benefit
- Adds scan traffic to your logs
04 · Allow
How to allow GenomeCrawlerd
robots.txt
User-agent: GenomeCrawlerd
Allow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "GenomeCrawlerd")
Action: Skip › All Super Bot Fight Mode rules
# Also check Security › Bots: "Block AI bots" can block it regardless of robots.txt.WordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: GenomeCrawlerd
Allow: /nginx
# nginx serves every user agent by default.
# Make sure no rule like this blocks it:
# if ($http_user_agent ~* "GenomeCrawlerd") { return 403; }Apache
# Apache serves every user agent by default.
# Make sure .htaccess has no rule like this:
# RewriteCond %{HTTP_USER_AGENT} GenomeCrawlerd [NC]
# RewriteRule .* - [F,L]05 · Block
How to block GenomeCrawlerd
Start with robots.txt. If GenomeCrawlerd keeps showing up in your logs, block it at your CDN or web server.
robots.txt
User-agent: GenomeCrawlerd
Disallow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "GenomeCrawlerd")
Action: BlockWordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: GenomeCrawlerd
Disallow: /nginx
# In your server { } block:
if ($http_user_agent ~* "GenomeCrawlerd") {
return 403;
}Apache
# .htaccess
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} GenomeCrawlerd [NC]
RewriteRule .* - [F,L]
</IfModule>06 · User agents
User agents we see for GenomeCrawlerd
The user agent published by the operator:
Mozilla/5.0 (compatible; GenomeCrawlerd/1.0; +https://www.nokia.com/genomecrawler)07 · Verification
Is it really GenomeCrawlerd?
Anyone can copy a user agent. Real GenomeCrawlerd requests come from the IP ranges published at genome.deepfield.net/crawlers.txt.
FAQ
Questions about GenomeCrawlerd
Why is Nokia's GenomeCrawlerd scanning my server?
It maps internet services for Nokia Deepfield Genome, which helps networks detect and mitigate DDoS attacks.
How can I verify GenomeCrawlerd?
Check the source IP against Nokia's list at genome.deepfield.net/crawlers.txt.
How do I stop GenomeCrawlerd?
Nokia suggests blocking its published IP ranges. You can also contact genome.crawling@nokia.com.
Last reviewed Oct 7, 2026