MJ12 (Majestic-12)
MJ12bot is Majestic’s distributed web crawler. Public summaries cite IPv4 prefixes on OVH-related space; verify against Majestic’s live crawler documentation before allowlisting.
Autonomous systems
Hosting context
Third-party hosting & clouds
OVH SAS (typical)
AS16276
MJ12 nodes are widely reported on OVH and related hosting ASNs; routing can change - use Majestic’s published guidance where available.
Published ranges
MJ12bot IPv4 prefixes
Maintained feedCommonly cited crawler ranges including 162.210.192.0/21 (162.210.192.0-162.210.199.255). Google-style JSON at /feeds/mj12.json. Confirm with Majestic for contractual allowlists.
Documentation
Published prefixes
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51.68.102.0/24 -
51.68.111.0/24 -
51.68.236.0/24 -
195.191.219.0/24 -
162.210.192.0/21