AS7843 — TWC-7843-BB

Network type: residential

AS7843 announces 109 IPv4 prefixes covering 436,736 addresses and 26 IPv6 prefixes.

About this network

TWC-7843-BB is one of the Time Warner Cable autonomous systems inherited by Charter Communications after the 2016 merger. It is operated today as part of Charter's Spectrum network.

What it's used for

• Cable broadband service to homes. Despite the BB (backbone) suffix in the handle, the announced space is overwhelmingly subscriber addressing.
• Reverse DNS is the standard Charter residential template: addresses in 66.61.0.0/16, 69.134.0.0/17, 24.30.192.0/19, 65.28.192.0/19 and 76.85.224.0/19 resolve as syn-066-061-000-001.res.spectrum.com and similar. The res label is Charter's residential zone.
• Older Road Runner infrastructure names survive alongside it on the routers, in the form ae5-3201.irtnoh-mx41.natcky.rr.com.

Notable

• The handle is a kind trap. A network named -BB invites being filed as backbone or transit; the rDNS says otherwise. Roughly 300,000 addresses of res.spectrum.com subscriber space is an eyeball network, and traffic from it is home users.
• Charter runs many legacy Time Warner Cable and Bright House ASNs alongside its own. Address space is regional here (holdovers from Time Warner's franchise footprint), so a single geolocation for the whole AS is a poor fit.

Interesting

• The rr.com domain in the router names is Road Runner, the Time Warner Cable consumer broadband brand retired in favour of Spectrum. The reverse-DNS zones outlived the brand by a decade, which is why one AS answers to three company names at once.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 9.233.0.0/19
• 9.233.64.0/19
• 9.233.192.0/18
• 9.236.0.0/16
• 9.237.48.0/20
• 9.237.64.0/20
• 16.14.232.0/21
• 16.191.0.0/23
• 24.27.224.0/20
• 24.30.192.0/23
• 24.30.194.0/24
• 24.30.196.0/22
• 24.30.200.0/21
• 24.30.208.0/23
• 24.30.211.0/24
• 24.30.212.0/24
• 24.30.214.0/23
• 24.30.216.0/21
• 24.33.240.0/20
• 24.92.64.0/19
• 24.106.215.0/24
• 47.43.111.0/24
• 48.44.132.0/22
• 48.44.136.0/21
• 48.44.176.0/20
• 48.44.224.0/19
• 64.183.134.0/24
• 64.183.141.0/24
• 65.28.128.0/22
• 65.28.200.0/23
• 65.28.205.0/24
• 65.28.206.0/23
• 65.28.208.0/22
• 65.28.214.0/24
• 65.185.241.0/24
• 65.185.245.0/24
• 66.61.144.0/20
• 66.61.160.0/19
• 66.109.0.0/20
• 68.168.72.0/22
• 69.76.16.0/20
• 69.76.64.0/20
• 69.76.80.0/23
• 69.76.83.0/24
• 69.76.84.0/22
• 69.76.88.0/21
• 69.76.96.0/21
• 69.76.104.0/24
• 69.76.106.0/24
• 69.76.124.0/22
• 69.134.0.0/17
• 69.134.128.0/22
• 69.134.136.0/21
• 69.134.144.0/20
• 69.134.160.0/19
• 69.134.192.0/20
• 69.134.208.0/21
• 69.134.216.0/22
• 69.134.220.0/23
• 69.134.223.0/24
• 69.134.224.0/19
• 71.74.52.0/22
• 71.74.160.0/19
• 72.129.193.0/24
• 72.129.194.0/23
• 72.129.196.0/22
• 72.129.200.0/21
• 72.129.216.0/22
• 72.129.220.0/23
• 74.87.132.0/24
• 74.87.246.0/24
• 76.57.225.0/24
• 76.57.241.0/24
• 76.63.162.0/23
• 76.63.165.0/24
• 76.85.224.0/19
• 76.89.53.0/24
• 76.89.58.0/23
• 76.89.60.0/22
• 76.92.64.0/20
• 76.92.88.0/21
• 76.178.0.0/22
• 76.178.4.0/23
• 98.120.110.0/24
• 107.8.0.0/19
• 107.8.32.0/21
• 107.8.42.0/23
• 107.8.44.0/22
• 107.8.48.0/20
• 107.8.64.0/18
• 107.8.128.0/17
• 107.9.64.0/18
• 107.14.16.0/20
• 107.14.32.0/19
• 107.14.64.0/21
• 107.14.72.0/22
• 107.14.78.0/23
• 107.14.80.0/21
• 107.14.120.0/21
• 107.14.128.0/19

and 35 more.

Upstream networks

• AS6939 Hurricane Electric LLC
• AS1299 Arelion Sweden AB
• AS3257 GTT Communications Inc.
• AS3356 Level 3 Parent, LLC
• AS7018 AT&T Enterprises, LLC
• AS14907 Wikimedia Foundation Inc.
• AS33891 Core-Backbone GmbH
• AS1273 IDDQD-AS
• AS2152 CENIC
• AS293 ESnet
• AS12956 TELEFONICA GLOBAL SOLUTIONS SL
• AS6830 Liberty Global Europe Holding B.V.
• AS9304 HGC Global Communications Limited
• AS3491 PCCW Global (HK) Ltd.

Downstream networks

• AS10796 Charter Communications Inc
• AS20115 Charter Communications LLC
• AS20001 Charter Communications Inc
• AS33363 Charter Communications, Inc
• AS11427 Charter Communications Inc
• AS11426 Charter Communications Inc
• AS11351 Charter Communications Inc
• AS12271 Charter Communications Inc
• AS22516 Charter Communications LLC
• AS16787 Charter Communications LLC
• AS10838 Charter Communications Inc
• AS11955 Charter Communications Inc
• AS8052 Charter Communications Inc
• AS14135 Navisite Opco LLC
• AS40294 Charter Communications LLC
• AS13343 Charter Communications Inc
• AS3456 Charter Communications Inc
• AS14065 Charter Communications Inc
• AS22677 Charter Communications LLC
• AS17054 Expedient
• AS4544 Navisite Opco LLC
• AS23222 Charter Communications LLC
• AS33588 Charter Communications LLC
• AS395120 Ashley Furniture Industries, Inc.
• AS30051 Santa Clara County

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS10796 Charter Communications Inc
• AS1299 Arelion Sweden AB
• AS20001 Charter Communications Inc
• AS11427 Charter Communications Inc
• AS20115 Charter Communications LLC
• AS33363 Charter Communications, Inc
• AS11351 Charter Communications Inc
• AS11426 Charter Communications Inc
• AS3257 GTT Communications Inc.
• AS3356 Level 3 Parent, LLC
• AS12271 Charter Communications Inc
• AS7018 AT&T Enterprises, LLC
• AS22516 Charter Communications LLC
• AS2152 CENIC
• AS14907 Wikimedia Foundation Inc.
• AS293 ESnet
• AS1273 IDDQD-AS
• AS16787 Charter Communications LLC
• AS33891 Core-Backbone GmbH
• AS6830 Liberty Global Europe Holding B.V.
• AS9304 HGC Global Communications Limited
• AS22677 Charter Communications LLC
• AS10838 Charter Communications Inc
• AS11955 Charter Communications Inc

Internet exchanges

• Equinix Internet Exchange Ashburn — Ashburn, United States
• DE-CIX New York — New York, United States
• Equinix Internet Exchange Chicago — Chicago, United States
• Equinix Internet Exchange Dallas — Dallas, United States
• Equinix Internet Exchange San Jose (Bay Area) — San Jose, United States
• Equinix Internet Exchange Miami — Miami, United States
• DE-CIX Dallas — Dallas, United States
• Equinix Internet Exchange New York — New York, United States
• DE-CIX Chicago — Chicago, United States
• Equinix Internet Exchange Los Angeles — Los Angeles, United States
• Equinix Los Angeles IBX — Los Angeles, United States
• United IX Chicago — Chicago, United States
• Equinix IBX Secaucus — Secaucus, United States
• LINX NoVa — Reston, United States
• Equinix-LA(former Paix) — Los Angeles, United States