Autonomous system
AS19356 TOUA-NOC - Tohono O'Odham Utility Authority
Unclassified ARIN
Summary
Tohono O'Odham Utility Authority
utility tribal residential business
TOUA-NOC is operated by Tohono O'Odham Utility Authority.
What it's used for
- The address space carries utility services for the Tohono O'Odham Nation, with netnames like
TOUANET-BLK-1indicating internal network blocks. - The AS announces 8192 IPv4 addresses across 8 prefixes and has 2 observed neighbours, a ratio consistent with an access or internal corporate estate rather than a transit provider.
Notable
- Registrants for the 64.25.0.0/16 space align with the announcer, all listed as Tohono O'Odham Utility Authority, while the 38.64.112.0/20 block is registered to Cogent Communications, LLC.
- The Tohono O'Odham Utility Authority was originally established in 1970 as the Papago Tribal Utility Authority before adopting its current name.
- The inventory consists of a single /20 block from Cogent and a fragmented set of /22, /23, and /24 blocks within the 64.25.64.0/22 range, all under the
TOUANET-BLK-1netname.
CLASSIFICATION
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 2026-11-02, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 8 prefixes · 8.19K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 8 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS19356- Registry name
- TOUA-NOC
- Registrant
- Tohono O'Odham Utility Authority
- Abuse contact
- cheri.robinson@hq.toua.net
- Registered
- 2000-12-20
- Last changed
- 2012-02-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 4 with no ROA
- ROAs
- 0 authorising AS19356
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 6 naming AS19356
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: 448 networks and 1,851 prefixes, as published 2026-11-03. 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