ASN AS4583 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS4583?

AS4583 is listed under West Publishing Corporation.

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.

AS4583 West Publishing Corporation

ASN Lookup Tool

West Publishing Corporation thomsonreuters.com

US 7 Routes

AS Data

AS4583

AS4583 – West Publishing Corporation

AS Number	4583
AS Name	THOMSON-REUTERS
Organization	West Publishing Corporation (wpc-15)
Country	US
Website	thomsonreuters.com
Number of IPv4 Routes	7
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1995-05-01

ASN Intelligence API for production workflows

Use ASN data for AS4583 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
155.46.156.0/23	AS4583	West Publishing Corporation	Thomson Reuters U.S. LLC	512
155.46.152.0/23	AS4583	West Publishing Corporation	Thomson Reuters U.S. LLC	512
155.46.136.0/22	AS4583	West Publishing Corporation	Thomson Reuters U.S. LLC	1024
155.46.168.0/22	AS4583	West Publishing Corporation	Thomson Reuters U.S. LLC	1024
155.46.144.0/22	AS4583	West Publishing Corporation	Thomson Reuters U.S. LLC	1024
155.46.165.0/24	AS4583	West Publishing Corporation	Thomson Reuters U.S. LLC	256
155.46.172.0/22	AS4583	West Publishing Corporation	Thomson Reuters U.S. LLC	1024

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:       4583
ASName:         THOMSON-REUTERS
ASHandle:       AS4583
RegDate:        1995-05-01
Updated:        2021-10-04
Ref:            https://rdap.arin.net/registry/autnum/4583


OrgName:        West Publishing Corporation
OrgId:          WPC-15
Address:        610 Opperman Drive
City:           Eagan
StateProv:      MN
PostalCode:     55123
Country:        US
RegDate:        1992-08-25
Updated:        2014-12-03
Ref:            https://rdap.arin.net/registry/entity/WPC-15


OrgTechHandle: TRIPT-ARIN
OrgTechName:   TR-IP-TECH
OrgTechPhone:  +1-651-687-7000 
OrgTechEmail:  TR.IP-TECH@thomsonreuters.com
OrgTechRef:    https://rdap.arin.net/registry/entity/TRIPT-ARIN

OrgAbuseHandle: TRIPA1-ARIN
OrgAbuseName:   TR-IP-Abuse
OrgAbusePhone:  +1-651-687-7000 
OrgAbuseEmail:  TR.IP-ABUSE@thomsonreuters.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/TRIPA1-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" : "4583",
    "as_handle" : "AS4583",
    "as_name" : "THOMSON-REUTERS",
    "tech_contacts" : [ "TRIPT-ARIN" ],
    "abuse_contacts" : [ "TRIPA1-ARIN" ],
    "date_created" : "1995-05-01",
    "date_updated" : "2021-10-04",
    "source" : "https://rdap.arin.net/registry/autnum/4583"
  } ],
  "organization" : {
    "handle" : "WPC-15",
    "name" : "West Publishing Corporation",
    "address" : [ "610 Opperman Drive", "Eagan", "MN", "55123", "US" ],
    "street" : "Opperman Drive",
    "city" : "Eagan",
    "state" : "MN",
    "zip_code" : "55123",
    "country" : [ "US" ],
    "date_created" : "1992-08-25",
    "date_updated" : "2014-12-03",
    "source" : "https://rdap.arin.net/registry/entity/WPC-15",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "TRIPT-ARIN",
    "name" : "TR-IP-TECH",
    "email" : [ "TR.IP-TECH@thomsonreuters.com" ],
    "phone" : [ "+1-651-687-7000" ],
    "source" : "https://rdap.arin.net/registry/entity/TRIPT-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "TRIPA1-ARIN",
    "name" : "TR-IP-Abuse",
    "email" : [ "TR.IP-ABUSE@thomsonreuters.com" ],
    "phone" : [ "+1-651-687-7000" ],
    "source" : "https://rdap.arin.net/registry/entity/TRIPA1-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS2686	AT&T Enterprises, LLC	US
AS7018	AT&T Enterprises, LLC	US
AS702	Verizon Business/UUnet Europe	US
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US

Upstreams

AS Number	Description	Country
AS2686	AT&T Enterprises, LLC	US
AS7018	AT&T Enterprises, LLC	US
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US

Contacts

Email Contacts

TR.IP-TECH@thomsonreuters.com

Abuse Contacts

TR.IP-ABUSE@thomsonreuters.com