AS33588 — BRESNAN-33588

AS33588 announces 36 IPv4 prefixes covering 841,984 addresses and 13 IPv6 prefixes.

About this network

The AS handle BRESNAN-33588 is held by Charter Communications LLC.

What it's used for

• The address space carries residential and business broadband traffic, evidenced by reverse DNS entries such as syn-069-144-128-000.biz.spectrum.com and syn-072-174-128-000.res.spectrum.com.
• With 841984 IPv4 addresses announced against only 14 observed neighbours, the ratio indicates a large-scale access or eyeball network rather than a transit provider.

Notable

• All registrants for the largest prefixes, including NET-CORE-BB-1 and CC04, are listed as Charter Communications LLC, matching the announcer.
• The AS handle retains the name "BRESNAN" because Charter acquired Bresnan Communications in 2010, which was previously owned by Cablevision and rebranded as Optimum West before the divestiture.
• The inventory consists of 36 IPv4 prefixes and 13 IPv6 prefixes, with the largest blocks being /15s such as 69.144.0.0/15 and 72.174.0.0/15.

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

Announced prefixes

• 35.131.32.0/19
• 35.132.0.0/24
• 35.132.32.0/24
• 35.132.48.0/20
• 35.133.0.0/18
• 35.134.192.0/18
• 35.150.64.0/18
• 35.151.208.0/20
• 47.5.0.0/17
• 47.28.192.0/18
• 47.37.0.0/18
• 47.44.112.0/20
• 47.45.128.0/17
• 47.47.128.0/18
• 47.231.228.0/22
• 69.144.0.0/15
• 69.146.0.0/16
• 71.15.192.0/19
• 71.85.191.0/24
• 72.174.0.0/15
• 75.143.192.0/19
• 76.58.56.0/23
• 98.127.0.0/16
• 137.26.64.0/18
• 150.181.24.0/23
• 150.181.26.0/24
• 150.181.91.0/24
• 150.224.249.0/24
• 159.111.0.0/19
• 172.221.64.0/18
• 173.40.192.0/20
• 174.45.0.0/16
• 184.166.0.0/15
• 192.61.208.0/21
• 192.61.246.0/23
• 192.61.255.0/24
• 2600:6c00:2::/47
• 2600:6c34::/30
• 2600:6c66::/31
• 2600:6c7f:9430::/44
• 2600:6cf2::/31
• 2602:104:f::/48
• 2602:107:4a00::/44
• 2602:107:4a20::/43
• 2602:107:4a40::/42
• 2602:107:4a80::/41
• 2602:107:e7a0::/43
• 2602:10d:8000::/36
• 2602:10f::/32

Upstream networks

• AS20115 Charter Communications LLC
• AS7843 Charter Communications Inc

Downstream networks

• AS395251 Benefis Health System
• AS401920 Montana Outback Wireless Inc.
• AS393657 Colorado Mesa University
• AS394913 AirGrids
• AS19115 Charter Communications LLC
• AS62817 BARRETT HOSPITAL AND HEALHCARE
• AS25816 Touro College
• AS393367 Teton County Hospital District
• AS26450 CTDI
• AS13590 Marcus Daly Memorial Hospital Corporation
• AS32146 City of Bozeman

Adjacent networks

• AS20115 Charter Communications LLC
• AS395251 Benefis Health System
• AS401920 Montana Outback Wireless Inc.
• AS393657 Colorado Mesa University
• AS394913 AirGrids
• AS7843 Charter Communications Inc
• AS19115 Charter Communications LLC
• AS25816 Touro College
• AS62817 BARRETT HOSPITAL AND HEALHCARE
• AS393367 Teton County Hospital District
• AS26450 CTDI
• AS13590 Marcus Daly Memorial Hospital Corporation
• AS32146 City of Bozeman