AS15324 — BARRACUDA-NETWORKS-INC

AS15324 announces 4 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

Every sampled address answers with the bare company domain and no host label at all.

What it's used for

• A security appliance vendor's network. Four IPv4 /24 prefixes announced from the United States, no IPv6, and two observed BGP neighbours.

Notable

• All twelve sampled addresses returned exactly the same answer, the company's domain with no host part, across four separate blocks.
• Three blocks share a netname that is simply the company name; the fourth shortens it and adds a counter.
• Every registrant field appends a hostmaster role after a semicolon.
• Twelve addresses were queried for reverse DNS and twelve returned a name.
• One thousand and twenty-four addresses in four routes that share no common range.

Interesting

• A single answer for every address is a rule set once at the zone. It identifies the owner and reveals nothing about individual hosts, which is a reasonable trade for a company whose addresses run security services.
• It does break forward confirmed reverse DNS, the check where a receiver resolves the name back and expects the original address. All these names resolve to whatever the company's website uses, so mail from these addresses will fail that test unless receivers skip it.
• For a vendor selling mail filtering, that is an interesting choice to have made about its own addresses.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 64.235.150.0/24
• 64.235.155.0/24
• 64.235.158.0/24
• 209.222.83.0/24

Upstream networks

• AS53292 ManagedWay
• AS13009 Redcentric Solutions Ltd

Adjacent networks

• AS53292 ManagedWay
• AS13009 Redcentric Solutions Ltd