Autonomous system
AS40409 CTSTS-LLC
Unclassified ARIN
Summary
Marmot Library Network
library business it non-profit
The AS handle CTSTS-LLC is held by Marmot Library Network, Inc.
What it's used for
- The space carries library IT infrastructure, evidenced by the netname
MARMOT-NETand reverse DNS entries such as192.245.61-host64.marmot.org. - The network announces 256 IPv4 addresses across 1 prefix with 1 observed neighbour, indicating a small, self-contained corporate estate rather than a transit or access network.
- Traffic consists of internal services for a non-profit library consortium, including integrated library systems, union catalogs, and IT support for member libraries in Colorado.
Notable
- The RDAP registrant
Marmot Library Network, Inc.matches the registry holder, confirming consistent ownership. - The address inventory is a single /24 block, typical for a small organization managing its own network infrastructure.
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 |
|---|---|---|
| Toronto Internet Exchange | Toronto, Canada | 2001:504:1a::34:91 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-20, 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 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS40409- Registry name
- MARMOT-LIBRARY-NETWORK
- Registrant
- Marmot Library Network, Inc.
- Abuse contact
- itservices@marmot.org
- Registered
- 2025-12-15
- Last changed
- 2025-12-15
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 1 valid, 0 with no ROA
- ROAs
- 1 authorising AS40409
- ASPA
- 1 declared providers
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS40409
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 1,779 prefixes, as published 2026-10-21. 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