Autonomous system
AS55039 FATBEAM-AS
Residential ARIN
Summary
Fatbeam
fiber isp residential business
FATBEAM-AS is operated by Fatbeam, LLC.
What it's used for
- The address space carries fiber-based residential and business connectivity, evidenced by netnames such as
FL-379andFB-PUBLIC-03registered to Fatbeam, LLC. - With 32,768 IPv4 addresses and 34 observed neighbours, the inventory supports a regional access network rather than a transit provider.
- Traffic from this AS consists of subscriber eyeballs and business endpoints for Fatbeam's fiber services in the Western United States.
Notable
- Registrants for the majority of prefixes are Fatbeam, LLC, while
199.250.32.0/20and199.250.48.0/21are registered to Timberland Regional Library. - Fatbeam Holdings, LLC was acquired by Basalt Infrastructure Partners LLC.
- The inventory includes a mix of /21, /22, and /23 IPv4 prefixes alongside 44 IPv6 prefixes.
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
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Seattle Internet Exchange | Seattle, United States | 206.81.81.39 |
| Central Oregon Internet eXchange | Bend, United States | 149.112.8.9 |
Transit providers
12 upstream, 18 downstream and 41 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 32 prefixes · 32.77K addresses IPv6 44 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 76 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS55039- Registry name
- FATBEAM-AS
- Registrant
- Fatbeam, LLC
- Abuse contact
- abuse@fatbeam.com
- Registered
- 2013-02-21
- Last changed
- 2023-02-10
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 51% valid · 41 valid, 40 with no ROA
- ROAs
- 12 authorising AS55039
- ASPA
- no ASPA record
- IRR
- 100% registered · 81 of 81 announcements
- Route objects
- 49 naming AS55039
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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 1,783 prefixes, as published 2026-10-17. 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