AS19108 — SUDDENLINK-COMMUNICATIONS

AS19108 announces 213 IPv4 prefixes covering 2,839,808 addresses and 8 IPv6 prefixes.

About this network

SUDDENLINK-COMMUNICATIONS is the AS handle for Optimum, formerly known as Suddenlink Communications.

What it's used for

• The address space carries residential and business broadband services, evidenced by netnames such as SUDDE and SUDDE-NETBLK registered to Optimum.
• With 2,840,320 IPv4 addresses and 70 IPv6 prefixes announced across 877 IPv4 prefixes, the inventory is extensive. The 91 observed neighbours indicate a large access network providing connectivity to end-users rather than a transit provider.

Notable

• All sampled registrants are listed as Optimum, consistent with the current branding of the operator.
• Suddenlink Communications was rebranded as Optimum, a subsidiary of Liberty Broadband, following its acquisition and integration into the Liberty Media group.
• The inventory includes large blocks in the 47.0.0.0/8 and 24.0.0.0/8 ranges, reflecting the historical accumulation of address space through mergers and acquisitions in the cable industry.

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

Announced prefixes

• 24.31.17.0/24
• 24.32.0.0/18
• 24.32.64.0/21
• 24.32.73.0/24
• 24.32.74.0/23
• 24.32.76.0/22
• 24.32.80.0/20
• 24.32.96.0/19
• 24.32.128.0/17
• 24.49.194.0/24
• 24.49.200.0/24
• 24.54.114.0/24
• 24.54.116.0/22
• 24.72.175.0/24
• 24.72.186.0/23
• 24.75.113.0/24
• 24.75.123.0/24
• 24.75.124.0/24
• 24.75.126.0/24
• 24.121.0.0/18
• 24.121.64.0/19
• 24.121.96.0/22
• 24.121.100.0/23
• 24.121.103.0/24
• 24.121.104.0/21
• 24.121.114.0/23
• 24.121.116.0/22
• 24.121.120.0/21
• 24.121.128.0/17
• 24.156.0.0/20
• 24.156.16.0/24
• 24.156.18.0/23
• 24.156.20.0/22
• 24.156.24.0/21
• 24.156.32.0/19
• 24.156.64.0/18
• 24.206.128.0/18
• 24.206.192.0/22
• 24.206.196.0/23
• 24.206.199.0/24
• 24.206.200.0/21
• 24.206.208.0/20
• 24.206.224.0/19
• 24.213.120.0/24
• 24.223.86.0/24
• 24.224.36.0/23
• 24.224.44.0/24
• 24.224.55.0/24
• 24.224.56.0/24
• 24.224.58.0/23
• 24.224.60.0/22
• 24.245.68.0/23
• 24.245.72.0/22
• 47.208.0.0/12
• 50.24.0.0/14
• 64.72.32.0/19
• 64.139.227.0/24
• 64.139.229.0/24
• 64.139.234.0/24
• 64.139.246.0/24
• 64.234.0.0/23
• 64.234.8.0/24
• 64.234.16.0/24
• 64.234.30.0/23
• 64.234.34.0/24
• 64.234.47.0/24
• 64.234.55.0/24
• 64.234.67.0/24
• 64.234.68.0/24
• 64.234.74.0/24
• 64.234.78.0/24
• 66.76.0.0/17
• 66.76.128.0/19
• 66.76.160.0/21
• 66.76.168.0/22
• 66.76.172.0/24
• 66.76.174.0/23
• 66.76.176.0/20
• 66.76.192.0/18
• 66.205.96.0/20
• 66.205.112.0/21
• 66.205.120.0/23
• 66.205.123.0/24
• 66.205.124.0/22
• 67.21.185.0/24
• 69.59.64.0/24
• 69.59.73.0/24
• 69.59.82.0/24
• 69.59.100.0/24
• 69.59.104.0/24
• 72.47.0.0/19
• 72.47.32.0/22
• 72.47.36.0/24
• 72.47.38.0/23
• 72.47.40.0/21
• 72.47.48.0/20
• 72.47.64.0/19
• 72.47.96.0/20
• 72.47.112.0/22
• 72.47.116.0/23

and 121 more.

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS3303 Swisscom (Schweiz) AG
• AS14907 Wikimedia Foundation Inc.
• AS5650 Frontier Communications of America, Inc.

Downstream networks

• AS53488 Optimum Online
• AS398089 Raven Rock Networks, Inc.
• AS12231 Conway Corporation
• AS3801 Mikrotec Internet Services
• AS393393 Amarillo ISD
• AS35894 Northern Arkansas Telephone Company
• AS22191 Wilkes Communications, Inc.
• AS32458 IND. CO. CABLE TV, INC.
• AS11135 Cross Development/Montgomery LP
• AS32927 Cleco Corporation
• AS397354 Wi-Fiber, Inc.
• AS394072 Abilene Independent School District
• AS400117 Apogee Telecom Inc.
• AS63345 The Reynolds and Reynolds Company
• AS62893 Fiber Wave, LLC
• AS395046 Sexing Technologies
• AS396028 Vidant Health
• AS26867 Brookshire Grocery Company
• AS46169 City of Georgetown
• AS40420 Silverline Solutions INC.
• AS20020 Power Systems Computers
• AS400004 SecureNet
• AS400727 Concho Valley Electric Cooperative, Inc.
• AS46209 GHC911
• AS399445 TVCC

Adjacent networks

• AS1299 Arelion Sweden AB
• AS3356 Level 3 Parent, LLC
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS53488 Optimum Online
• AS398089 Raven Rock Networks, Inc.
• AS14907 Wikimedia Foundation Inc.
• AS3303 Swisscom (Schweiz) AG
• AS3801 Mikrotec Internet Services
• AS12231 Conway Corporation
• AS393393 Amarillo ISD
• AS35894 Northern Arkansas Telephone Company
• AS22191 Wilkes Communications, Inc.
• AS32458 IND. CO. CABLE TV, INC.
• AS11135 Cross Development/Montgomery LP
• AS32927 Cleco Corporation
• AS397354 Wi-Fiber, Inc.
• AS394072 Abilene Independent School District
• AS400117 Apogee Telecom Inc.
• AS63345 The Reynolds and Reynolds Company
• AS62893 Fiber Wave, LLC
• AS395046 Sexing Technologies
• AS396028 Vidant Health
• AS26867 Brookshire Grocery Company
• AS5650 Frontier Communications of America, Inc.

Internet exchanges

• Equinix Internet Exchange Ashburn — Ashburn, 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