Hidden social crawl
meta-externalagent crawls your site on shares; preview issues are hard to fix without that visibility.
Social Bots
meta-externalagent Crawl Analysis
🟢 Safe
Track the meta-externalagent (Meta) social preview/share crawler. See link previews and social crawl traffic.
Don't manage meta-externalagent traffic blindly
Preview failures
Knowing which URLs are fetched-and how often-matters for SMO.
Platform fragmentation
Meta, X and other social crawlers arrive with separate user-agents.
Crawl visibility with NMOS.NET
rDNS verification, robots/llms checks, and site readiness—no blocking promises.
rDNS verification
Confirm whether crawler IPs match known reverse-DNS patterns
robots.txt checks
See Allow/Disallow coverage for this crawler against your policy
llms.txt / AI policy
Check AI crawler policy files and templates from the panel
Site readiness
One score across robots, sitemap, llms, security.txt, and tracking
What NMOS.NET shows for this crawler
Track visits, verify identity, and review policy—no blocking promise.
Verify identity (rDNS)
Match visit IPs to known reverse-DNS patterns so spoofed user-agents stand out.
robots.txt policy check
Compare crawler hits with your Allow/Disallow rules and spot gaps.
Safety & risk level
Catalog safety badges (safe / caution / danger) on every visit filter.
How it works
Start seeing crawler visits in three steps.
1
Create an account
Sign up for free and add your site.
2
Install tracking
Add the meta tag, tracking.js, and optional no-JS beacon; verify with Check.
3
Track and review
See meta-externalagent visits, verification, and policy checks in your dashboard.
Frequently asked questions
About meta-externalagent detection and NMOS.NET.
What is meta-externalagent?
meta-externalagent is a crawler social platforms use for link previews or content discovery. Operator: Meta.
Why does it matter for SMO?
Preview and share quality depend on the crawler fetching your page correctly.
How long does setup take?
Minutes with a meta tag.
How is data collected?
A record is created from user-agent matching at visit time.
Start tracking meta-externalagent visits
Free account and a short install. See crawl traffic with category and safety levels.
Tracking Systems
Similar crawlers by category or risk level