AS22121 — TOPSHAM-COMMUNICATIONS

AS22121 announces 3 IPv4 prefixes covering 3,328 addresses and 1 IPv6 prefixes.

About this network

The AS handle TOPSHAM-COMMUNICATIONS is held by Topsham Communications LLC.

What it's used for

• The address space carries customer access traffic, evidenced by reverse DNS entries such as 0-138-21-199-cust.tops-tele.com and 255-139-21-199-cust.tops-tele.com.
• The network announces 3328 IPv4 addresses across 3 prefixes and 1 IPv6 prefix, while maintaining only 2 observed neighbours, a ratio indicative of an access or eyeball network rather than a transit provider.

Notable

• All RDAP registrants for the announced prefixes are Topsham Communications LLC, matching the AS holder.
• The inventory consists of three distinct IPv4 blocks: 199.21.136.0/21, 172.99.224.0/22, and 38.56.71.0/24, alongside a single IPv6 prefix 2604:14c0::/32.

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

Announced prefixes

• 38.56.71.0/24
• 172.99.224.0/22
• 199.21.136.0/21
• 2604:14c0::/32

Upstream networks

• AS17356 Vermont Telephone Company, Inc.
• AS11722 Slic Network Solutions, Inc

Adjacent networks

• AS17356 Vermont Telephone Company, Inc.
• AS11722 Slic Network Solutions, Inc