ASN Lookup Tool

Charter Communications, Inc. spectrum.com US US 647 Routes

AS Data

AS20001

AS20001 – Charter Communications, Inc.

AS Number 20001
AS Name TWC-20001-PACWEST
Organization Charter Communications, Inc. (cc-3517)
Country US
Website spectrum.com
Number of IPv4 Routes 601
Number of IPv6 Routes 36
ASN type ISP
Registry ARIN
Date Allocated 2001-03-13

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IP Ranges

Route # IPs
2605:e000:300::/64 ~18×10¹⁸
204.237.140.0/23 512
74.87.137.0/24 256
172.88.0.0/14 262144
76.176.0.0/16 65536
199.162.64.0/19 8192
64.105.109.0/24 256
173.198.64.0/19 8192
204.229.220.0/22 1024
76.79.128.0/17 32768
64.105.128.0/22 1024
199.12.32.0/19 8192
2600:5c00:3a88::/48 ~1×10²⁴
2605:e000:efc0::/42 ~77×10²⁴
191.1.192.0/18 16384
172.96.95.0/24 256
155.229.64.0/21 2048
24.43.192.0/19 8192
172.81.113.0/24 256
64.105.164.0/22 1024
173.198.64.0/20 4096
198.1.223.0/24 256
74.211.192.0/19 8192
204.130.172.0/24 256
67.49.0.0/16 65536
76.93.0.0/16 65536
104.129.254.0/24 256
172.81.112.0/24 256
72.130.0.0/16 65536
165.162.0.0/17 32768
173.197.210.0/23 512
173.43.224.0/19 8192
66.167.12.0/23 512
101.61.128.0/18 16384
206.251.1.0/24 256
108.178.128.0/18 16384
209.163.116.0/24 256
76.83.128.0/17 32768
216.254.64.0/20 4096
75.85.128.0/19 8192
204.229.234.0/24 256
101.61.192.0/19 8192
74.62.0.0/18 16384
207.168.64.0/20 4096
206.251.0.0/24 256
66.234.240.0/23 512
98.152.96.0/23 512
24.123.117.0/24 256
2605:e000:ec00::/39 ~619×10²⁴
199.12.192.0/19 8192
64.183.168.0/22 1024
173.196.0.0/16 65536
74.87.136.0/24 256
74.87.200.0/21 2048
23.240.0.0/14 262144
76.81.68.0/22 1024
144.224.192.0/19 8192
2605:e000:1100::/40 ~309×10²⁴
98.147.0.0/18 16384
67.52.128.0/18 16384

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:       20001
ASName:         TWC-20001-PACWEST
ASHandle:       AS20001
RegDate:        2001-03-13
Updated:        2018-11-27
Ref:            https://rdap.arin.net/registry/autnum/20001



OrgName:        Charter Communications Inc
OrgId:          CC-3517
Address:        6175 S. Willow Dr
City:           Greenwood Village
StateProv:      CO
PostalCode:     80111
Country:        US
RegDate:        2018-10-10
Updated:        2022-09-14
Comment:        Legacy Time Warner Cable IP Assets
Ref:            https://rdap.arin.net/registry/entity/CC-3517


OrgAbuseHandle: ABUSE19-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-877-777-2263 
OrgAbuseEmail:  abuse@charter.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE19-ARIN

OrgTechHandle: IPADD1-ARIN
OrgTechName:   IPAddressing
OrgTechPhone:  +1-866-248-7662 
OrgTechEmail:  PublicIPAddressing@charter.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IPADD1-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

Peers

AS Number Description Country
AS8188 Bloomberg Financial Markets Limited Partnership US
AS54201 We Link Networks LLC US
AS19398 Tenet HealthSystem Medical, Inc. US
AS20115 Charter Communications LLC US
AS395102 Yuma Regional Medical Center US
AS23527 Christ Catholic Cathedral Corporation US
AS396299 The IMAGINE Group, LLC US
AS27511 Punahou School US
AS21705 Houdini Inc. US
AS19913 W PNP, Inc. US
AS393971 Martin Luther King Jr., Healthcare Corporation US
AS394912 Act 1 Group, Inc. US
AS17101 PORT OF LOS ANGELES US
AS394777 San Manuel Band of Mission Indians US
AS15115 Premiere Networks US
AS393938 Intuitive Machines, LLC US
AS11188 LOS ANGELES COUNTY INTERNAL SERVICESDIVISION US
AS12017 UNIVERSAL HEALTH SERVICES US
AS394942 City of Fontana US
AS19115 Charter Communications LLC US
AS398929 Loma Linda Connected Community Program US
AS62566 Starbucks Coffee Company US
AS23154 Sanmina SCI Corporation US
AS20419 DMR Communications Inc. US
AS11140 Behr Process US
AS15007 Buddhist Tzu Chi Foundation US
AS22948 Walnut Valley Unified School District US
AS17044 THE INTERPUBLIC GROUP OF COMPANIES, INC. US
AS397248 FractalVision US
AS25671 Wholesale Air time Inc. US
AS11687 City of Hope Medical Center US
AS32172 @radicalmedia Inc. US
AS19011 Iteris, Inc. US
AS19768 SCAN Health Plan US
AS395924 Globecast America US
AS401874 UNIVERSAL HEALTH SERVICES US
AS30251 Falken Tire Corporation US
AS26302 Soboba Casino US
AS400165 LOGIX US
AS393815 MemorialCare Health System US
AS27468 Goodwill Industries of Orange County US
AS398071 Automobile Club of Southern California US
AS6453 TATA COMMUNICATIONS AMERICA INC US
AS32480 Loma Linda University Medical Center US
AS40300 DR Fortress, LLC US
AS23000 Wescom Credit Union US
AS46233 Eisenhower Medical Center US
AS23425 CMRE FSI US
AS62819 Cetra Group Inc. US
AS54159 Xetra Networks Inc. US
AS20429 Guitar Center US
AS40743 California Joint Powers Insurance Authority US
AS19035 Hawaii Internet Exchange US
AS55253 Creative Artists Agency, LLC US
AS7843 Charter Communications Inc US
AS393868 VPH US
AS401504 City of Long Beach US
AS21938 YAMAHA MOTOR CORPORATION, U.S.A US
AS393820 22nd District Agricultural Association US
AS33015 Los Angeles Superior Court of California US

Upstreams

AS Number Description Country
AS6453 TATA COMMUNICATIONS AMERICA INC US
AS20115 Charter Communications LLC US
AS7843 Charter Communications Inc US
AS6939 Hurricane Electric LLC US
AS701 Verizon Business US

Downstreams

AS Number Description Country
AS8188 Bloomberg Financial Markets Limited Partnership US
AS54201 We Link Networks LLC US
AS19398 Tenet HealthSystem Medical, Inc. US
AS395102 Yuma Regional Medical Center US
AS23527 Christ Catholic Cathedral Corporation US
AS396299 The IMAGINE Group, LLC US
AS27511 Punahou School US
AS21705 Houdini Inc. US
AS19913 W PNP, Inc. US
AS393971 Martin Luther King Jr., Healthcare Corporation US

Contacts

Email Contacts

PublicIPAddressing@charter.com

Abuse Contacts

abuse@charter.net

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Frequently Asked Questions

ASN AS20001 is an Autonomous System Number used to identify a network for BGP internet routing.
AS20001 is listed under Charter Communications, Inc..
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
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.