Autonomous system
AS16746 RELIANTENERGY
Unclassified ARIN
Summary
CenterPoint Energy, Inc.
enterprise infrastructure business
The netname, the handle and the holder are three company names in reverse chronological order.
What it's used for
- A utility's network. Eighteen IPv4 prefixes announced from the United States, no sixth-version space, nine thousand seven hundred and twenty-eight addresses, through five observed BGP neighbours.
Notable
- Every block carries one netname: three initials, a city, and a counter reading one.
- Those three initials belong to a company name older than anything else in the record.
- The AS handle is a different name again, two words run together, one the utility used between the initials and the name it has now.
- The holder line and every registrant give the current name.
- All eighteen blocks come from a single parent range, at four sizes, and eighteen addresses were queried for reverse DNS with none returning a name.
Interesting
- Three fields, three names, oldest label first. The netname was set when the space was granted and has never been touched; the handle was set at a later rename and then frozen in turn; only the registrant is maintained. Reading the record top to bottom walks backwards through the company's history.
- Eighteen prefixes carved from one range under one label is a network that has been subdivided many times for internal reasons and never re-registered. The registry sees one thing; the routing table sees eighteen.
- A city in the netname on a utility's space marks where the operation started, which for an electricity company is also where the wires are.
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
5 upstream, 0 downstream and 5 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 14 prefixes · 9.73K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 14 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS16746- Registry name
- RELIANTENERGY
- Registrant
- CenterPoint Energy, Inc.
- Abuse contact
- it-networkservices@centerpointenergy.com
- Registered
- 2000-06-05
- Last changed
- 2023-07-19
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 23 with no ROA
- ROAs
- 0 authorising AS16746
- ASPA
- no ASPA record
- IRR
- 100% registered · 23 of 23 announcements
- Route objects
- 2 naming AS16746
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: 446 networks and 1,852 prefixes, as published 2026-10-27. 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