Autonomous system
AS15324 BARRACUDA-NETWORKS-INC
Unclassified APNIC
Summary
Barracuda Networks
business enterprise infrastructure
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
/24prefixes 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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 1.02K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 4 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS15324- Registry name
- BARRACUDA-NETWORKS-INC
- Registrant
- Barracuda Networks, Inc.
- Abuse contact
- hostmaster@barracuda.com
- Registered
- 2006-11-10
- Last changed
- 2012-02-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 4 with no ROA
- ROAs
- 0 authorising AS15324
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 6 naming AS15324
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,771 prefixes, as published 2026-10-15. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere