Autonomous system
AS13349 TCU-NET
Unclassified ARIN
Summary
Teachers Credit Union
finance business enterprise
Four upstream neighbours for a single /23, which is redundancy bought instead of address space.
What it's used for
- The network of a United States credit union. 512 addresses in one IPv4 prefix,
204.156.122.0/23, four observed BGP neighbours, and no IPv6 announced.
Notable
- The AS handle is
TCU-NETand the block's netname isTCU-I4-1001. - Three addresses were queried for reverse DNS and none returned a name.
- First observed in the routing archive in July 2005.
Interesting
- The ratio here is the whole story. One small block and four separate upstreams means the organisation runs its own routing not to advertise more space but so that no single provider failing can take it offline. For a financial institution that is a compliance requirement as much as an engineering decision.
- The netname reads as initials, an address-family marker and a serial number that starts at a round thousand. Serials that begin at 1001 rather than 1 come from a system where somebody picked a starting point that would sort neatly and never be confused with a count.
- An empty reverse DNS sample fits a network whose public presence is a firewall and little else. Most of what a credit union runs faces its branches and its members through other people's platforms.
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 2026-10-30, 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 · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13349- Registry name
- TCU-NET
- Registrant
- TEACHERS CREDIT UNION
- Abuse contact
- noc@everwisecu.com
- Registered
- 2010-12-08
- Last changed
- 2012-02-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 3 with no ROA
- ROAs
- 0 authorising AS13349
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 1 naming AS13349
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: 447 networks and 1,849 prefixes, as published 2026-10-30. 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