Autonomous system
AS55002 DEFENSE-NET
Unclassified ARIN
Summary
F5 Silverline
security sdn enterprise transit
The AS handle DEFENSE-NET is held by F5, Inc.
What it's used for
- The address space carries F5 Silverline infrastructure, as indicated by the consistent netname
F5SL-01across all listed IPv4 prefixes. - With 61,184 IPv4 addresses and 110 observed neighbours, the high neighbour count relative to the address block size indicates a transit or peering-heavy role rather than a pure access network.
- Traffic from this AS consists of enterprise application delivery, API security, and zero trust access services, reflecting F5's business focus on multicloud security and workload protection.
Notable
- All registrants in the RDAP sample are listed as
F5, Inc., which agrees with the AS holder. - The address inventory is finely subdivided into numerous /20, /21, /22, and /24 prefixes within the 107.162.0.0/16 range, suggesting internal segmentation for different service tiers or geographic regions.
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 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 27 prefixes · 61.18K addresses IPv6 77 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 104 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS55002- Registry name
- DEFENSE-NET
- Registrant
- F5, Inc.
- Abuse contact
- abuse@f5.com
- Registered
- 2013-02-12
- Last changed
- 2023-06-20
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 180 valid, 0 with no ROA
- ROAs
- 132 authorising AS55002
- ASPA
- no ASPA record
- IRR
- 100% registered · 180 of 180 announcements
- Route objects
- 36 naming AS55002
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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