Autonomous system
AS19725 COHPWE - City Of Houston - Public Works
Unclassified ARIN
Summary
City of Houston Public Works
government municipal infrastructure
COHPWE is the autonomous system for City of Houston Public Works.
What it's used for
- The space carries a single IPv4 prefix, 50.58.210.0/24, with a netname of TWTC-NETBLK-19.
- The AS announces 256 IPv4 addresses and 0 IPv6 prefixes, with 1 observed neighbour, indicating a small, isolated municipal network.
Notable
- The RDAP registrant for the announced prefix is Level 3 Parent, LLC, which differs from the AS holder, suggesting the address space is leased or allocated through a third-party provider.
- The address inventory consists of a single /24 block, representing a compact internal estate for the city's public works operations.
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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS394437 | PS Lightwave | 57 |
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 1 prefixes · 256 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS19725- Registry name
- COHPWE
- Registrant
- City Of Houston - Public Works
- Abuse contact
- Drew.Calhoun@houstontx.gov
- Registered
- 2011-09-12
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS19725
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS19725
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