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.

AS40373 University Medical Center, Inc

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

University Medical Center, Inc uoflhealth.org

US 1 Routes

AS Data

AS40373

AS40373 – University Medical Center, Inc

AS Number	40373
AS Name	UMC-NET
Organization	University Medical Center, Inc (umc-31)
Country	US
Website	uoflhealth.org
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2007-02-06

ASN Intelligence API for production workflows

Use ASN data for AS40373 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

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
216.249.130.0/24	AS40373	University Medical Center, Inc	University Medical Center, 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:       40373
ASName:         UMC-NET
ASHandle:       AS40373
RegDate:        2007-02-06
Updated:        2018-01-11
Ref:            https://rdap.arin.net/registry/autnum/40373


OrgName:        University Medical Center, Inc
OrgId:          UMC-31
Address:        530 S Jackson St
City:           Louisville
StateProv:      KY
PostalCode:     40202
Country:        US
RegDate:        2007-02-05
Updated:        2020-07-15
Ref:            https://rdap.arin.net/registry/entity/UMC-31


OrgAbuseHandle: CHU45-ARIN
OrgAbuseName:   Hughlett, Chad 
OrgAbusePhone:  +1-502-588-3498 
OrgAbuseEmail:  chad.hughlett@uoflhealth.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CHU45-ARIN

OrgTechHandle: CHU45-ARIN
OrgTechName:   Hughlett, Chad 
OrgTechPhone:  +1-502-588-3498 
OrgTechEmail:  chad.hughlett@uoflhealth.org
OrgTechRef:    https://rdap.arin.net/registry/entity/CHU45-ARIN

RNOCHandle: CHU45-ARIN
RNOCName:   Hughlett, Chad 
RNOCPhone:  +1-502-588-3498 
RNOCEmail:  chad.hughlett@uoflhealth.org
RNOCRef:    https://rdap.arin.net/registry/entity/CHU45-ARIN

RAbuseHandle: CHU45-ARIN
RAbuseName:   Hughlett, Chad 
RAbusePhone:  +1-502-588-3498 
RAbuseEmail:  chad.hughlett@uoflhealth.org
RAbuseRef:    https://rdap.arin.net/registry/entity/CHU45-ARIN

RTechHandle: CHU45-ARIN
RTechName:   Hughlett, Chad 
RTechPhone:  +1-502-588-3498 
RTechEmail:  chad.hughlett@uoflhealth.org
RTechRef:    https://rdap.arin.net/registry/entity/CHU45-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" : "40373",
    "as_handle" : "AS40373",
    "as_name" : "UMC-NET",
    "tech_contacts" : [ "CHU45-ARIN", "CHU45-ARIN" ],
    "abuse_contacts" : [ "CHU45-ARIN", "CHU45-ARIN" ],
    "date_created" : "2007-02-06",
    "date_updated" : "2018-01-11",
    "source" : "https://rdap.arin.net/registry/autnum/40373"
  } ],
  "organization" : {
    "handle" : "UMC-31",
    "name" : "University Medical Center, Inc",
    "address" : [ "530 S Jackson St", "Louisville", "KY", "40202", "US" ],
    "street" : "S Jackson St",
    "city" : "Louisville",
    "state" : "KY",
    "zip_code" : "40202",
    "country" : [ "US" ],
    "date_created" : "2007-02-05",
    "date_updated" : "2020-07-15",
    "source" : "https://rdap.arin.net/registry/entity/UMC-31",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "CHU45-ARIN",
    "name" : "Hughlett, Chad",
    "email" : [ "chad.hughlett@uoflhealth.org" ],
    "phone" : [ "+1-502-588-3498" ],
    "source" : "https://rdap.arin.net/registry/entity/CHU45-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "CHU45-ARIN",
    "name" : "Hughlett, Chad",
    "email" : [ "chad.hughlett@uoflhealth.org" ],
    "phone" : [ "+1-502-588-3498" ],
    "source" : "https://rdap.arin.net/registry/entity/CHU45-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS271253	LINK BRASIL TELECOMUNICACOES LTDA	BR
AS7018	AT&T Enterprises, LLC	US
AS10796	Charter Communications Inc	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US
AS10796	Charter Communications Inc	US
AS3356	Level 3 Parent, LLC	US

Frequently Asked Questions

What is ASN AS40373?

ASN AS40373 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS40373?

AS40373 is listed under University Medical Center, Inc.

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.