Autonomous system
AS26052 ABN-AMRO-CLEARING-USA-LLC
Unclassified ARIN
Summary
Fortis Clearing Chicago LLC
financial clearing business corporate
The AS handle ABN-AMRO-CLEARING-USA-LLC is held by Fortis Clearing Chicago LLC.
What it's used for
- The address space carries internal corporate infrastructure for a financial clearing entity, evidenced by the netname
ABN-AMRO-CLEARING-US-TRADING-NETWORKacross all prefixes. - The AS announces 4096 IPv4 addresses across 5 prefixes with only 3 observed neighbours, indicating a small, self-contained corporate network rather than a transit or access provider.
Notable
- All registrants in the RDAP data match the announcer, consistently listing Fortis Clearing Chicago LLC as the owner of the prefixes.
- The address inventory is finely subdivided into one /21 and four /23 blocks, all within the 64.29.96.0/20 range, suggesting site-by-site or functional segmentation of the corporate estate.
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 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 4.10K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 5 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS26052- Registry name
- ABN-AMRO-CLEARING-USA-LLC
- Registrant
- Fortis Clearing Chicago LLC
- Abuse contact
- GlobalNetworkOps.ap@abnamroclearing.com
- Registered
- 2002-06-26
- Last changed
- 2023-11-06
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 4 with no ROA
- ROAs
- 0 authorising AS26052
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 2 naming AS26052
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 1,778 prefixes, as published 2026-10-20. 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