AS16541 — ERICKSON-AS

AS16541 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

Every address answers with a placeholder that names the machine's own loopback, published to the whole internet.

What it's used for

• A retirement community operator's network. One IPv4 prefix announced from the United States, no IPv6, two hundred and fifty-six addresses, through two observed BGP neighbours.

Notable

• All three queried addresses answered, and all three gave the same name: the word for undefined, the word for a hostname, and then the name a machine uses for itself.
• That last part is the name every computer resolves to its own loopback address. Published in a reverse zone, it points anyone who follows it back at their own machine.
• The netname is four initials, one for each word of the company name, and a numeral one. The AS handle uses only the first word plus two letters for an autonomous system.
• The block is the smallest routable size and it is the whole holding, registered to the company under its full name with its corporate suffix.

Interesting

• A default string in a configuration template, left in place and answered for every address, is a small and permanent piece of evidence that nobody has looked at the reverse zone since it was created. It works, in the sense that queries get an answer.
• The answer is also actively unhelpful: software that trusts reverse names now believes these addresses belong to itself. Most software has learned not to trust them, and this is one of the reasons.
• A name that says undefined is more honest than most placeholders. It declines to guess.

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

Announced prefixes

• 204.10.187.0/24

Upstream networks

• AS701 Verizon Business
• AS19855 Masergy Communications, Inc.

Adjacent networks

• AS701 Verizon Business
• AS19855 Masergy Communications, Inc.