Autonomous system
AS15005 CIRCLE-B-WIRELESS-LLC
Unclassified ARIN Cable/DSL/ISP
Summary
Circle B Wireless
isp telecom
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.computs the last octet first. - Three blocks carry the netname
CIRCLE-B-LLCand the fourthCIRCLE-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
dynamicandstaticappear inside the names, and they do not sort cleanly by block. One block answersstaticfor two sampled addresses anddynamicfor 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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 1.54K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 6 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS15005- Registry name
- CIRCLE-B
- Registrant
- Circle B Wireless
- Abuse contact
- colby@circlebwireless.com
- Registered
- 2023-09-26
- Last changed
- 2026-08-16
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Circle B Wireless
- Also known as
- Circle B
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Traffic ratio
- Heavy Outbound
- Peering policy
- Open
- Website
- https://circlebwireless.com/
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 33% valid · 2 valid, 4 with no ROA
- ROAs
- 2 authorising AS15005
- ASPA
- 3 declared providers
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 9 naming AS15005
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,782 prefixes, as published 2026-10-16. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere