AS26421 — PONDEROSA-INTERNET

AS26421 announces 13 IPv4 prefixes covering 8,960 addresses and 0 IPv6 prefixes.

About this network

The AS handle PONDEROSA-INTERNET is held by Ponderosa Cablevision.

What it's used for

• The address space carries residential cable internet traffic, evidenced by reverse DNS records pointing to netptc.net (e.g., 23-29-11-254.netptc.net) and netnames like TWTC-PONDEROSA50 and SIERRATEL-4.
• The AS announces 8960 IPv4 addresses across 13 prefixes with only 2 observed neighbours, a ratio that indicates an access or eyeball network rather than a transit provider.

Notable

• Registrants are predominantly Ponderosa Cablevision, though two prefixes (209.150.76.0/23 and 209.234.206.0/23) are registered to Level 3 Parent, LLC, suggesting historical acquisition or leased space.
• The inventory is dominated by a single large /20 block (23.29.0.0/20) alongside numerous smaller /23 and /24 blocks, reflecting a typical regional cable operator footprint.

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

Announced prefixes

• 23.29.0.0/20
• 50.58.142.0/23
• 64.129.228.0/24
• 74.202.200.0/23
• 206.169.217.0/24
• 206.169.218.0/23
• 207.114.159.0/24
• 209.150.76.0/23
• 209.234.196.0/24
• 209.234.206.0/23
• 209.234.208.0/23
• 209.234.216.0/23
• 209.234.222.0/24

Upstream networks

• AS54048 Vast Networks
• AS3356 Level 3 Parent, LLC

Adjacent networks

• AS54048 Vast Networks
• AS3356 Level 3 Parent, LLC