Backblaze

Backblaze publishes CIDR ranges used by Computer Backup and B2 Cloud Storage. Marketing sites (www/help/docs) may ride on Cloudflare and will not match these blocks. Prefer domain allowlists (*.backblaze.com / *backblazeb2.com) when possible — ranges can change.

Autonomous systems

AS40401

Backblaze Computer Backup & B2

Documentation

Official CIDR ranges shared by Computer Backup and B2 Cloud Storage (docs page; not a machine-readable feed).

https://www.backblaze.com/computer-backup/docs/backblaze-ip-addresses

Documentation

Backblaze Help - IP Address List
Backblaze - Peering policy (AS40401)

Published prefixes

45.11.36.0/22
104.153.232.0/21
149.137.128.0/20
206.190.208.0/21
207.166.148.0/22
2605:72c0::/32

Autonomous systems

Published ranges

Documentation

Published prefixes

Related entries