ASN AS2003 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS2003?

AS2003 is listed under Electric Power Research Institute.

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?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS2003 Electric Power Research Institute

ASN Lookup Tool

Electric Power Research Institute epri.com

US 28 Routes

AS Data

AS2003

AS2003 – Electric Power Research Institute

AS Number	2003
AS Name	EPRI-PA
Organization	Electric Power Research Institute (epri)
Country	US
Website	epri.com
Number of IPv4 Routes	28
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1992-09-30

ASN Intelligence API for production workflows

Use ASN data for AS2003 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
144.58.3.0/24	AS2003	Electric Power Research Institute	Electric Power Research Institute	256
144.58.140.0/24	AS2003	Electric Power Research Institute	Electric Power Research Institute	256
144.58.240.0/21	AS2003	Electric Power Research Institute	Electric Power Research Institute	2048
144.58.176.0/20	AS2003	Electric Power Research Institute	Electric Power Research Institute	4096
144.58.208.0/20	AS2003	Electric Power Research Institute	Electric Power Research Institute	4096
144.58.50.0/24	AS2003	Electric Power Research Institute	Electric Power Research Institute	256
144.58.43.0/24	AS2003	Electric Power Research Institute	Electric Power Research Institute	256
144.58.112.0/20	AS2003	Electric Power Research Institute	Electric Power Research Institute	4096
144.58.46.0/24	AS2003	Electric Power Research Institute	Electric Power Research Institute	256
144.58.4.0/24	AS2003	Electric Power Research Institute	Electric Power Research Institute	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:       2003
ASName:         EPRI-PA
ASHandle:       AS2003
RegDate:        1992-09-30
Updated:        2018-04-27
Ref:            https://rdap.arin.net/registry/autnum/2003


OrgName:        Electric Power Research Institute
OrgId:          EPRI
Address:        3420 Hillview Ave.
City:           Palo Alto
StateProv:      CA
PostalCode:     94304
Country:        US
RegDate:        1990-11-13
Updated:        2024-08-30
Ref:            https://rdap.arin.net/registry/entity/EPRI


OrgAbuseHandle: LITTL261-ARIN
OrgAbuseName:   Little, Ryan 
OrgAbusePhone:  +1-704-595-2462 
OrgAbuseEmail:  domainalerts@epri.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/LITTL261-ARIN

OrgRoutingHandle: LITTL261-ARIN
OrgRoutingName:   Little, Ryan 
OrgRoutingPhone:  +1-704-595-2462 
OrgRoutingEmail:  domainalerts@epri.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/LITTL261-ARIN

OrgDNSHandle: LITTL261-ARIN
OrgDNSName:   Little, Ryan 
OrgDNSPhone:  +1-704-595-2462 
OrgDNSEmail:  domainalerts@epri.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/LITTL261-ARIN

OrgNOCHandle: LITTL261-ARIN
OrgNOCName:   Little, Ryan 
OrgNOCPhone:  +1-704-595-2462 
OrgNOCEmail:  domainalerts@epri.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/LITTL261-ARIN

OrgTechHandle: LITTL261-ARIN
OrgTechName:   Little, Ryan 
OrgTechPhone:  +1-704-595-2462 
OrgTechEmail:  domainalerts@epri.com
OrgTechRef:    https://rdap.arin.net/registry/entity/LITTL261-ARIN

RAbuseHandle: WEBST127-ARIN
RAbuseName:   Webster, Jonathan 
RAbusePhone:  +1-704-595-2276 
RAbuseEmail:  jwebster@epri.com
RAbuseRef:    https://rdap.arin.net/registry/entity/WEBST127-ARIN

RNOCHandle: WEBST127-ARIN
RNOCName:   Webster, Jonathan 
RNOCPhone:  +1-704-595-2276 
RNOCEmail:  jwebster@epri.com
RNOCRef:    https://rdap.arin.net/registry/entity/WEBST127-ARIN

RTechHandle: WEBST127-ARIN
RTechName:   Webster, Jonathan 
RTechPhone:  +1-704-595-2276 
RTechEmail:  jwebster@epri.com
RTechRef:    https://rdap.arin.net/registry/entity/WEBST127-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" : "2003",
    "as_handle" : "AS2003",
    "as_name" : "EPRI-PA",
    "admin_contacts" : [ "LITTL261-ARIN" ],
    "tech_contacts" : [ "LITTL261-ARIN", "LITTL261-ARIN", "WEBST127-ARIN" ],
    "abuse_contacts" : [ "LITTL261-ARIN", "WEBST127-ARIN" ],
    "date_created" : "1992-09-30",
    "date_updated" : "2018-04-27",
    "source" : "https://rdap.arin.net/registry/autnum/2003"
  } ],
  "organization" : {
    "handle" : "EPRI",
    "name" : "Electric Power Research Institute",
    "address" : [ "3420 Hillview Ave.", "Palo Alto", "CA", "94304", "US" ],
    "street" : "Hillview Ave.",
    "city" : "Palo Alto",
    "state" : "CA",
    "zip_code" : "94304",
    "country" : [ "US" ],
    "date_created" : "1990-11-13",
    "date_updated" : "2024-08-30",
    "source" : "https://rdap.arin.net/registry/entity/EPRI",
    "addressCountry" : "US"
  },
  "administrative_contacts" : [ {
    "handle" : "LITTL261-ARIN",
    "name" : "Little, Ryan",
    "email" : [ "domainalerts@epri.com" ],
    "phone" : [ "+1-704-595-2462" ],
    "source" : "https://rdap.arin.net/registry/entity/LITTL261-ARIN"
  } ],
  "technical_contacts" : [ {
    "handle" : "LITTL261-ARIN",
    "name" : "Little, Ryan",
    "email" : [ "domainalerts@epri.com" ],
    "phone" : [ "+1-704-595-2462" ],
    "source" : "https://rdap.arin.net/registry/entity/LITTL261-ARIN"
  }, {
    "handle" : "WEBST127-ARIN",
    "name" : "Webster, Jonathan",
    "email" : [ "jwebster@epri.com" ],
    "phone" : [ "+1-704-595-2276" ],
    "source" : "https://rdap.arin.net/registry/entity/WEBST127-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "LITTL261-ARIN",
    "name" : "Little, Ryan",
    "email" : [ "domainalerts@epri.com" ],
    "phone" : [ "+1-704-595-2462" ],
    "source" : "https://rdap.arin.net/registry/entity/LITTL261-ARIN"
  }, {
    "handle" : "WEBST127-ARIN",
    "name" : "Webster, Jonathan",
    "email" : [ "jwebster@epri.com" ],
    "phone" : [ "+1-704-595-2276" ],
    "source" : "https://rdap.arin.net/registry/entity/WEBST127-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS20115	Charter Communications LLC	US
AS15830	Equinix EMEA Acquisition Enterprises B.V.	NL
AS15830	Equinix (EMEA) Acquisition Enterprises B.V.	NL
AS33651	Comcast Cable Communications, LLC	US
AS11351	Charter Communications Inc	US
AS11426	Charter Communications Inc	US
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US
AS11427	Charter Communications Inc	US

Upstreams

AS Number	Description	Country
AS20115	Charter Communications LLC	US
AS15830	Equinix EMEA Acquisition Enterprises B.V.	NL
AS33651	Comcast Cable Communications, LLC	US
AS11351	Charter Communications Inc	US
AS11426	Charter Communications Inc	US
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US
AS11427	Charter Communications Inc	US