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AS13516 Cancer Treatment Centers of America, 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

Cancer Treatment Centers of America, Inc. ctca-hope.com

US 2 Routes

AS Data

AS13516

AS13516 – Cancer Treatment Centers of America, Inc.

AS Number	13516
AS Name	CTCA1336
Organization	Cancer Treatment Centers of America, Inc. (ctca-2)
Country	US
Website	ctca-hope.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2013-02-15

ASN Intelligence API for production workflows

Use ASN data for AS13516 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
198.160.209.0/24	AS13516	Cancer Treatment Centers of America, Inc.	Cancer Treatment Centers of America, Inc.	256
198.160.208.0/24	AS13516	Cancer Treatment Centers of America, Inc.	Cancer Treatment Centers of America, 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:       13516
ASName:         CTCA1336
ASHandle:       AS13516
RegDate:        2013-02-15
Updated:        2013-02-15
Ref:            https://rdap.arin.net/registry/autnum/13516


OrgName:        Cancer Treatment Centers of America, Inc.
OrgId:          CTCA-2
Address:        2610 Sheridan Road
City:           Zion
StateProv:      IL
PostalCode:     60099
Country:        US
RegDate:        2008-05-07
Updated:        2023-05-10
Ref:            https://rdap.arin.net/registry/entity/CTCA-2


OrgAbuseHandle: NETWO5546-ARIN
OrgAbuseName:   Network Team
OrgAbusePhone:  +1-877-448-1725 
OrgAbuseEmail:  networkadmins@ctca-hope.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO5546-ARIN

OrgTechHandle: NETWO5546-ARIN
OrgTechName:   Network Team
OrgTechPhone:  +1-877-448-1725 
OrgTechEmail:  networkadmins@ctca-hope.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO5546-ARIN

OrgNOCHandle: NETWO5546-ARIN
OrgNOCName:   Network Team
OrgNOCPhone:  +1-877-448-1725 
OrgNOCEmail:  networkadmins@ctca-hope.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO5546-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" : "13516",
    "as_handle" : "AS13516",
    "as_name" : "CTCA1336",
    "tech_contacts" : [ "NETWO5546-ARIN" ],
    "abuse_contacts" : [ "NETWO5546-ARIN" ],
    "date_created" : "2013-02-15",
    "date_updated" : "2013-02-15",
    "source" : "https://rdap.arin.net/registry/autnum/13516"
  } ],
  "organization" : {
    "handle" : "CTCA-2",
    "name" : "Cancer Treatment Centers of America, Inc.",
    "address" : [ "2610 Sheridan Road", "Zion", "IL", "60099", "US" ],
    "street" : "Sheridan Road",
    "city" : "Zion",
    "state" : "IL",
    "zip_code" : "60099",
    "country" : [ "US" ],
    "date_created" : "2008-05-07",
    "date_updated" : "2023-05-10",
    "source" : "https://rdap.arin.net/registry/entity/CTCA-2",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "NETWO5546-ARIN",
    "name" : "Network Team",
    "email" : [ "networkadmins@ctca-hope.com" ],
    "phone" : [ "+1-877-448-1725" ],
    "source" : "https://rdap.arin.net/registry/entity/NETWO5546-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NETWO5546-ARIN",
    "name" : "Network Team",
    "email" : [ "networkadmins@ctca-hope.com" ],
    "phone" : [ "+1-877-448-1725" ],
    "source" : "https://rdap.arin.net/registry/entity/NETWO5546-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS209	CenturyLink Communications, LLC	US
AS4181	TDS TELECOM	US

Upstreams

AS Number	Description	Country
AS209	CenturyLink Communications, LLC	US
AS4181	TDS TELECOM	US

Frequently Asked Questions

What is ASN AS13516?

ASN AS13516 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS13516?

AS13516 is listed under Cancer Treatment Centers of America, 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.