Autonomous system
AS21903 ARNHEM-01
Unclassified ARIN
Summary
Arnhem Networks
hosting infrastructure business
ARNHEM-01 is operated by Arnhem Networks LLC.
What it's used for
- The address space carries network and server infrastructure, with the netname
ARNHEM-NETWORKS-4NETassociated with the announced IPv4 prefix. - The AS announces 256 IPv4 addresses and 8 IPv6 prefixes, maintaining 9 observed neighbours, a ratio consistent with a hosting or infrastructure provider rather than a large access network.
Notable
- The registrant for the announced prefix is Arnhem Networks LLC, which aligns with the AS holder.
- The address inventory consists of a single IPv4 /24 block and multiple IPv6 prefixes, indicating a focused infrastructure footprint.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Fremont Cabal Internet Exchange | Fremont, United States | 206.80.238.181 |
Transit providers
7 upstream, 0 downstream and 8 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 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 256 addresses IPv6 8 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 9 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS21903- Registry name
- ARNHEM-01
- Registrant
- Arnhem Networks LLC
- Abuse contact
- noc@arnhemnetworks.com
- Registered
- 2023-06-20
- Last changed
- 2024-04-19
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 9 valid, 0 with no ROA
- ROAs
- 12 authorising AS21903
- ASPA
- no ASPA record
- IRR
- 100% registered · 9 of 9 announcements
- Route objects
- 14 naming AS21903
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 1,772 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