AS15005 — CIRCLE-B-WIRELESS-LLC

AS15005 announces 5 IPv4 prefixes covering 1,536 addresses and 1 IPv6 prefixes.

About this network

One of its four blocks writes every address backwards.

What it's used for

• A wireless internet provider's network. Four IPv4 blocks announced from the United States, no IPv6 at all, and two observed BGP neighbours.

Notable

• Every one of the twelve sampled addresses returned a reverse name, all of them under the same domain. That is the only complete rate seen so far in this range.
• Three blocks build the name from the address read forwards, as in dynamic128-38-80-64.circlebwireless.com. The fourth reverses it: dynamic64-118-65-38.circlebwireless.com puts the last octet first.
• Three blocks carry the netname CIRCLE-B-LLC and the fourth CIRCLE-B-V4, all registered to the holder.
• The AS handle is CIRCLE-B-WIRELESS-LLC, longer than any of the netnames it sits beside.

Interesting

• The reversed block is the find here. One operator, one naming template, and one block where the octets were fed in the opposite order, which is what happens when a reverse zone is generated by hand or by a second script. Anything that parses these names to recover an address will read that block wrong and never notice, because the result is still a valid-looking address.
• The words dynamic and static appear inside the names, and they do not sort cleanly by block. One block answers static for two sampled addresses and dynamic for a third; another does the reverse. The labels describe individual assignments, not whole ranges.
• Naming the assignment type in public is a real disclosure. It tells anyone who asks which addresses are expected to stay put.

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

Announced prefixes

• 23.152.204.0/24
• 38.27.1.0/24
• 38.65.118.0/24
• 38.80.64.0/23
• 38.196.180.0/24
• 2604:73c0:1000::/40

Upstream networks

• AS30029 Dobson Technologies - Transport and Telecom Solutions, LLC
• AS7029 Windstream Communications LLC
• AS36556 Wave Rural Connect, LLC

Adjacent networks

• AS30029 Dobson Technologies - Transport and Telecom Solutions, LLC
• AS7029 Windstream Communications LLC
• AS36556 Wave Rural Connect, LLC