ASN AS16746 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS16746?

AS16746 is listed under CenterPoint Energy, Inc..

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS16746 CenterPoint Energy, Inc.

ASN Lookup Tool

CenterPoint Energy, Inc. centerpointenergy.com

US 42 Routes

AS Data

AS16746

AS16746 – CenterPoint Energy, Inc.

AS Number	16746
AS Name	RELIANTENERGY
Organization	CenterPoint Energy, Inc. (ce-1291)
Country	US
Website	centerpointenergy.com
Number of IPv4 Routes	42
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2000-06-05

ASN Intelligence API for production workflows

Use ASN data for AS16746 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
158.81.66.0/24	AS16746	CenterPoint Energy, Inc.	CenterPoint Energy, Inc.	256
158.81.13.161/32	AS16746	CenterPoint Energy, Inc.	CenterPoint Energy, Inc.	1
158.81.64.0/20	AS16746	CenterPoint Energy, Inc.	CenterPoint Energy, Inc.	4096
158.81.36.0/24	AS16746	CenterPoint Energy, Inc.	CenterPoint Energy, Inc.	256
158.81.13.135/32	AS16746	CenterPoint Energy, Inc.	CenterPoint Energy, Inc.	1
158.81.49.0/24	AS16746	CenterPoint Energy, Inc.	CenterPoint Energy, Inc.	256
158.81.13.138/32	AS16746	CenterPoint Energy, Inc.	CenterPoint Energy, Inc.	1
158.81.96.0/24	AS16746	CenterPoint Energy, Inc.	CenterPoint Energy, Inc.	256
158.81.13.145/32	AS16746	CenterPoint Energy, Inc.	CenterPoint Energy, Inc.	1
158.81.45.0/24	AS16746	CenterPoint Energy, Inc.	CenterPoint Energy, Inc.	256

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       16746
ASName:         RELIANTENERGY
ASHandle:       AS16746
RegDate:        2000-06-05
Updated:        2023-07-19
Ref:            https://rdap.arin.net/registry/autnum/16746


OrgName:        CenterPoint Energy, Inc.
OrgId:          CE-1291
Address:        PO BOX 4567
City:           Houston
StateProv:      TX
PostalCode:     77210
Country:        US
RegDate:        2022-11-15
Updated:        2023-05-31
Ref:            https://rdap.arin.net/registry/entity/CE-1291


OrgDNSHandle: NETWO9786-ARIN
OrgDNSName:   Network Services
OrgDNSPhone:  +1-713-207-4357 
OrgDNSEmail:  it-networkservices@centerpointenergy.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/NETWO9786-ARIN

OrgRoutingHandle: NETWO9786-ARIN
OrgRoutingName:   Network Services
OrgRoutingPhone:  +1-713-207-4357 
OrgRoutingEmail:  it-networkservices@centerpointenergy.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/NETWO9786-ARIN

OrgAbuseHandle: NETWO9786-ARIN
OrgAbuseName:   Network Services
OrgAbusePhone:  +1-713-207-4357 
OrgAbuseEmail:  it-networkservices@centerpointenergy.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO9786-ARIN

OrgNOCHandle: NETWO9786-ARIN
OrgNOCName:   Network Services
OrgNOCPhone:  +1-713-207-4357 
OrgNOCEmail:  it-networkservices@centerpointenergy.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO9786-ARIN

OrgTechHandle: NETWO9786-ARIN
OrgTechName:   Network Services
OrgTechPhone:  +1-713-207-4357 
OrgTechEmail:  it-networkservices@centerpointenergy.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO9786-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "16746",
    "as_handle" : "AS16746",
    "as_name" : "RELIANTENERGY",
    "admin_contacts" : [ "NETWO9786-ARIN" ],
    "tech_contacts" : [ "NETWO9786-ARIN", "NETWO9786-ARIN" ],
    "abuse_contacts" : [ "NETWO9786-ARIN" ],
    "date_created" : "2000-06-05",
    "date_updated" : "2023-07-19",
    "source" : "https://rdap.arin.net/registry/autnum/16746"
  } ],
  "organization" : {
    "handle" : "CE-1291",
    "name" : "CenterPoint Energy, Inc.",
    "address" : [ "PO BOX 4567", "Houston", "TX", "77210", "US" ],
    "city" : "Houston",
    "state" : "TX",
    "zip_code" : "77210",
    "country" : [ "US" ],
    "date_created" : "2022-11-15",
    "date_updated" : "2023-05-31",
    "source" : "https://rdap.arin.net/registry/entity/CE-1291",
    "addressCountry" : "US"
  },
  "administrative_contacts" : [ {
    "handle" : "NETWO9786-ARIN",
    "name" : "Network Services",
    "email" : [ "it-networkservices@centerpointenergy.com" ],
    "phone" : [ "+1-713-207-4357" ],
    "source" : "https://rdap.arin.net/registry/entity/NETWO9786-ARIN"
  } ],
  "technical_contacts" : [ {
    "handle" : "NETWO9786-ARIN",
    "name" : "Network Services",
    "email" : [ "it-networkservices@centerpointenergy.com" ],
    "phone" : [ "+1-713-207-4357" ],
    "source" : "https://rdap.arin.net/registry/entity/NETWO9786-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NETWO9786-ARIN",
    "name" : "Network Services",
    "email" : [ "it-networkservices@centerpointenergy.com" ],
    "phone" : [ "+1-713-207-4357" ],
    "source" : "https://rdap.arin.net/registry/entity/NETWO9786-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS15830	Equinix EMEA Acquisition Enterprises B.V.	NL
AS7018	AT&T Enterprises, LLC	US
AS33662	Comcast Cable Communications, LLC	US
AS15830	Equinix (EMEA) Acquisition Enterprises B.V.	NL
AS701	Verizon Business/UUnet	US
AS209	CenturyLink Communications, LLC	US
AS3356	Level 3 Parent, LLC	US
AS701	Verizon Business	US

Upstreams

AS Number	Description	Country
AS15830	Equinix EMEA Acquisition Enterprises B.V.	NL
AS7018	AT&T Enterprises, LLC	US
AS33662	Comcast Cable Communications, LLC	US
AS209	CenturyLink Communications, LLC	US
AS3356	Level 3 Parent, LLC	US
AS701	Verizon Business	US