ASN AS18543 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18543?

AS18543 is listed under ION MEDIA NETWORKS.

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.

AS18543 ION MEDIA NETWORKS | IPGeolocation.io

ASN Lookup Tool

ION MEDIA NETWORKS ionmedia.com

US 1 Routes

AS Data

AS18543

AS18543 – ION MEDIA NETWORKS

AS Number	18543
AS Name	ION-NEWYORKCITY-NYC
Organization	ION MEDIA NETWORKS (ionme-1)
Country	US
Website	ionmedia.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2010-03-08

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Use ASN data for AS18543 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
38.98.100.0/24	AS18543	ION MEDIA NETWORKS	ION Media Networks, 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:       18543
ASName:         ION-NEWYORKCITY-NYC
ASHandle:       AS18543
RegDate:        2010-03-08
Updated:        2020-05-22
Ref:            https://rdap.arin.net/registry/autnum/18543


OrgName:        ION MEDIA NETWORKS
OrgId:          IONME-1
Address:        601 Clearwater Park Road
City:           West Palm Beach
StateProv:      FL
PostalCode:     33401
Country:        US
RegDate:        2009-05-27
Updated:        2020-05-22
Ref:            https://rdap.arin.net/registry/entity/IONME-1


OrgTechHandle: ADMIN7328-ARIN
OrgTechName:   admins
OrgTechPhone:  +1-727-533-1000 
OrgTechEmail:  connectivityadmins@ionmedia.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ADMIN7328-ARIN

OrgAbuseHandle: ADMIN7328-ARIN
OrgAbuseName:   admins
OrgAbusePhone:  +1-727-533-1000 
OrgAbuseEmail:  connectivityadmins@ionmedia.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ADMIN7328-ARIN

OrgRoutingHandle: ADMIN7328-ARIN
OrgRoutingName:   admins
OrgRoutingPhone:  +1-727-533-1000 
OrgRoutingEmail:  connectivityadmins@ionmedia.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ADMIN7328-ARIN

OrgNOCHandle: ADMIN7328-ARIN
OrgNOCName:   admins
OrgNOCPhone:  +1-727-533-1000 
OrgNOCEmail:  connectivityadmins@ionmedia.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/ADMIN7328-ARIN

RAbuseHandle: ADMIN7328-ARIN
RAbuseName:   admins
RAbusePhone:  +1-727-533-1000 
RAbuseEmail:  connectivityadmins@ionmedia.com
RAbuseRef:    https://rdap.arin.net/registry/entity/ADMIN7328-ARIN

RNOCHandle: ADMIN7328-ARIN
RNOCName:   admins
RNOCPhone:  +1-727-533-1000 
RNOCEmail:  connectivityadmins@ionmedia.com
RNOCRef:    https://rdap.arin.net/registry/entity/ADMIN7328-ARIN

RTechHandle: ADMIN7328-ARIN
RTechName:   admins
RTechPhone:  +1-727-533-1000 
RTechEmail:  connectivityadmins@ionmedia.com
RTechRef:    https://rdap.arin.net/registry/entity/ADMIN7328-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" : "18543",
    "as_handle" : "AS18543",
    "as_name" : "ION-NEWYORKCITY-NYC",
    "tech_contacts" : [ "ADMIN7328-ARIN", "ADMIN7328-ARIN", "ADMIN7328-ARIN" ],
    "abuse_contacts" : [ "ADMIN7328-ARIN", "ADMIN7328-ARIN" ],
    "date_created" : "2010-03-08",
    "date_updated" : "2020-05-22",
    "source" : "https://rdap.arin.net/registry/autnum/18543"
  } ],
  "organization" : {
    "handle" : "IONME-1",
    "name" : "ION MEDIA NETWORKS",
    "address" : [ "601 Clearwater Park Road", "West Palm Beach", "FL", "33401", "US" ],
    "street" : "Clearwater Park Road",
    "city" : "West Palm Beach",
    "state" : "FL",
    "zip_code" : "33401",
    "country" : [ "US" ],
    "date_created" : "2009-05-27",
    "date_updated" : "2020-05-22",
    "source" : "https://rdap.arin.net/registry/entity/IONME-1",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "ADMIN7328-ARIN",
    "name" : "admins",
    "email" : [ "connectivityadmins@ionmedia.com" ],
    "phone" : [ "+1-727-533-1000" ],
    "source" : "https://rdap.arin.net/registry/entity/ADMIN7328-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "ADMIN7328-ARIN",
    "name" : "admins",
    "email" : [ "connectivityadmins@ionmedia.com" ],
    "phone" : [ "+1-727-533-1000" ],
    "source" : "https://rdap.arin.net/registry/entity/ADMIN7328-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS1239	Cogent Communications, LLC	US
AS209	CenturyLink Communications, LLC	US
AS174	Cogent Communications, LLC	US

Upstreams

AS Number	Description	Country
AS209	CenturyLink Communications, LLC	US
AS174	Cogent Communications, LLC	US