Autonomous system
AS13855 CFU-NET
Residential ARIN Cable/DSL/ISP
Summary
Cedar Falls Municipal Communications Utility
isp telecom government
A city-owned broadband utility with a numbered netname series and 24 upstreams.
What it's used for
- A municipal broadband utility. 25,344 addresses across 16 IPv4 prefixes, the IPv6 block
2607:f070::/32, and 24 observed BGP neighbours.
Notable
- Netnames run
CFU-NETthenCFU-NET-2,-3,-4,-8,-9,-10and-11; the sampled records jump from four to eight, and four prefixes were not sampled. - All 11 records that answered give exactly the same registrant string, a city utility named in full.
- One block's registry lookup failed and returned nothing.
- Reverse names take the form
gw-254-23-149-24.cf-res.cfu.net, the address in reverse order behind a gateway marker, under a residential subzone. - The blocks come from ten unrelated parent ranges.
Interesting
- A numbered netname series is a record of acquisition order, so the count is a history of how many separate times this utility went and got more address space. Ten different parent ranges for one city says none of it arrived as a single allocation.
- Twenty-four upstreams is more than most regional carriers hold and far more than a city of this size needs for capacity. A municipal utility answers to residents rather than shareholders, and buying paths is how it makes an outage somebody else's problem.
- Marking every subscriber gateway as residential in its name maps the customer base from outside.
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
Recorded at 3 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange Chicago | Chicago, United States | 208.115.136.162 |
| Midwest Internet Cooperative Exchange | Minneapolis, United States | 206.108.255.132 |
| Quad Cities Internet Exchange | Davenport, United States | 206.83.43.51 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 16 prefixes · 25.34K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 17 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13855- Registry name
- CFU-NET
- Registrant
- The Municipal Communications Utility of the City of Cedar Falls, Iowa
- Abuse contact
- abuse@cfu.net
- Registered
- 1999-08-27
- Last changed
- 2022-07-13
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Cedar Falls Utilities
- Also known as
- Municipal Communications Utility of the City of Cedar Falls Iowa
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Traffic ratio
- Heavy Inbound
- Peering policy
- Open
- IRR as-set
AS13855:AS-ALL- Present at
- 3 exchanges
- Facilities
- 5 facilities
- Website
- https://www.cfu.net/
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
- 82% valid · 9 valid, 2 with no ROA
- ROAs
- 9 authorising AS13855
- ASPA
- no ASPA record
- IRR
- 100% registered · 11 of 11 announcements
- Route objects
- 20 naming AS13855
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 431 networks and 1,768 prefixes, as published 2026-10-12. 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