AS20001 Charter Communications Inc

TWC-20001-PACWEST - Charter Communications Inc · registered in the United States

IPv4 addresses7,210,752627 prefixes · 0.230% of announced IPv4

Rank in United States#25largest network in US by IPv4 space, of 18,338 · 0.53% of US

Rank worldwide#64of 79,396 networks with IPv4

IPv620 x /32 (1,335,836 x /48)159 prefixes

CountryUnited States18,679 ASNs registered there

Open AS20001 in ASN lookup Look up an IP in this network (23.94.90.1) All networks in United States

IPv4 prefixes

First 500 of 627 prefixes, in address order.

23.94.90.0/24
23.94.106.0/24
23.94.109.0/24
23.94.135.0/24
23.142.228.0/24
23.240.0.0/14
24.24.128.0/17
24.25.192.0/18
24.30.128.0/18
24.43.0.0/18
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24.43.128.0/19
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24.43.176.0/21
24.43.192.0/19
24.43.224.0/20
24.43.240.0/20
24.94.0.0/19
24.94.64.0/19
24.123.116.0/23
24.123.120.0/24
24.160.32.0/21
24.160.48.0/20
24.165.0.0/18
24.165.64.0/20
24.165.80.0/20
24.199.0.0/20
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35.132.40.0/21
40.183.128.0/21
45.40.123.0/24
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45.148.135.0/24
47.231.64.0/20
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50.113.0.0/16
63.243.199.0/24
64.105.74.0/23
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64.183.152.0/24
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65.28.212.0/24
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66.8.128.0/17
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66.53.160.0/22
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66.75.192.0/20
66.75.208.0/21
66.75.216.0/23
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66.91.0.0/16
66.146.237.0/24
66.167.12.0/23
66.234.230.0/23
66.234.236.0/23
66.234.240.0/23
66.234.248.0/23
67.49.0.0/17
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67.49.192.0/18
67.52.64.0/18
67.52.136.0/21
67.52.144.0/20
67.52.160.0/19
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67.103.24.0/23
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67.103.194.0/23
67.103.196.0/22
67.103.200.0/22
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67.216.236.0/23
68.182.208.0/22
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69.31.64.0/22
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69.174.69.0/24
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70.93.0.0/16
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72.129.0.0/19
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75.84.0.0/15
75.87.224.0/20
76.32.0.0/15
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76.53.1.0/24
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88.209.203.0/24
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170.151.128.0/18
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173.205.6.0/23
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173.205.18.0/23

IPv6 prefixes

All 159 prefixes.

2600:5c00:1000::/36
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2606:6000:8000::/33

Other ASNs named Charter Communications Inc

15 other networks use the same organisation name; together with AS20001 they announce 38,531,840 IPv4 addresses.

ASNNameIPv4 addresses

AS10796TWC-10796-MIDWEST - Charter Communications Inc US7,405,568

AS11427TWC-11427-TEXAS - Charter Communications Inc US5,789,696

AS33363BHN-33363 - Charter Communications, Inc US5,679,360

AS11426TWC-11426-CAROLINAS - Charter Communications Inc US4,389,888

AS11351TWC-11351-NORTHEAST - Charter Communications Inc US4,317,440

AS12271TWC-12271-NYC - Charter Communications Inc US2,859,008

AS7843TWC-7843-BB - Charter Communications Inc US438,784

AS10838OCEANIC-INTERNET-RR - Charter Communications Inc US165,120

AS3456TWC-3456-IT - Charter Communications Inc US142,336

AS11955TWC-11955-ATLANTA - Charter Communications Inc US60,160

AS20231TWC-20231-NE-KS-C3 - Charter Communications Inc US22,016

AS14065TWC-14065-COUDERSPORT - Charter Communications Inc US18,432

AS13343TWC-13343-CHARLOTTE - Charter Communications Inc US17,408

AS8052TWC-8052-PEAKVIEW - Charter Communications Inc US14,592

AS6534OCEANIC-CABLE - Charter Communications Inc US1,280

Similar-sized networks in United States

ASNNameIPv4 addresses

AS56#22 DNIC-AS-00056 - United States Department of Defense (DoD)7,785,728

AS1540#23 DNIC-ASBLK-01534-01546 - Headquarters, USAISC7,430,144

AS10796#24 TWC-10796-MIDWEST - Charter Communications Inc7,405,568

AS2828#26 XO-AS15 - Verizon Business6,535,680

AS3561#27 CENTURYLINK-LEGACY-SAVVIS - CenturyLink Communications, LLC6,397,952

AS11427#28 TWC-11427-TEXAS - Charter Communications Inc5,789,696

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources