AS13376 — TOPPAN-MERRILL

AS13376 announces 1 IPv4 prefixes covering 2,048 addresses and 0 IPv6 prefixes.

About this network

A regulatory filing company with two thousand addresses and not a single name in DNS.

What it's used for

• The network of a company that produces regulatory and financial documents. 2,048 addresses in one IPv4 prefix, 37.26.88.0/21, three observed BGP neighbours, and no IPv6 announced.

Notable

• The block is netname TML-202, the company's initials and a number.
• Three addresses were queried for reverse DNS and none returned a name.
• Three upstream neighbours for a single announced block.

Interesting

• The number in the netname does not start a series from one, so it is drawn from an internal numbering scheme that already had two hundred entries when this block was named. The registry field is being used as a pointer into somebody's own inventory system.
• Three upstreams for one /21 is the same trade a financial institution makes: the point of running your own routing is that no single provider's outage can disconnect you, and the address count is beside the point.
• An empty reverse DNS sample suits the work. A company that prepares filings on behalf of others handles material that is confidential until the moment it is published, and a network built for that has nothing on it that answers to a stranger.

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

Announced prefixes

• 37.26.88.0/21

Upstream networks

• AS40264 Charter Communications LLC
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC

Adjacent networks

• AS40264 Charter Communications LLC
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC