Autonomous system
AS19663 CASS-STL - CASS INFORMATION SYSTEMS
Unclassified ARIN
Summary
CASS Information Systems
business corporate internal
The AS handle CASS-STL is held by CASS Information Systems.
What it's used for
- The address space carries corporate infrastructure, evidenced by the netnames
CASS-INF95-44andCASSPUBLICADDRESSBLOCKand the reverse DNS entrypassword.cassinfo.com. - The AS announces 512 IPv4 addresses across 2 prefixes with 2 observed neighbours, indicating a small, self-contained corporate network rather than a transit or access provider.
Notable
- Both registrants match the announcer, identified as CASS INFORMATION SYSTEMS.
- The inventory consists of two /24 blocks, 12.147.44.0/24 and 192.69.141.0/24, with no IPv6 prefixes announced.
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 2026-11-08, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS19663- Registry name
- CASS-STL
- Registrant
- CASS INFORMATION SYSTEMS
- Abuse contact
- smullins@cassinfo.com
- Registered
- 2001-01-31
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS19663
- ASPA
- no ASPA record
- IRR
- 50% registered · 1 of 2 announcements 1 other origin
- Route objects
- 1 naming AS19663
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: 455 networks and 1,854 prefixes, as published 2026-11-09. 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