Autonomous system
AS33566 KUB-FIBER-01
Residential ARIN Cable/DSL/ISP
Summary
Knoxville Utilities Board
utility fiber residential business
The AS handle KUB-FIBER-01 is held by Knoxville Utilities Board.
What it's used for
- The address space carries fiber internet, television, and home phone services, as indicated by the netname
KUB-FIBER-01-V4and the operator's provision of locally-owned fiber services. - The AS announces 52480 IPv4 addresses across 25 prefixes and 34 IPv6 prefixes, while maintaining 22 observed neighbours. This ratio of substantial address inventory against a moderate number of peers suggests a regional access network serving a specific utility customer base rather than a large-scale transit provider.
Notable
- All registrants for the largest prefixes are consistently listed as Knoxville Utilities Board, matching the AS holder.
- The address inventory is heavily concentrated in the 162.81.0.0/16 range, with the majority of prefixes falling within this block, alongside a smaller set of 192.147.0.0/16 addresses.
- The organization was originally formed as the Knoxville Electric Power and Water Board in 1938 and was renamed to Knoxville Utilities Board in 1947.
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 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange Ashburn | Ashburn, United States | 206.126.237.229 |
| Digital Realty Atlanta Internet Exchange | Atlanta, United States | 206.126.110.128 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 21 prefixes · 52.22K addresses IPv6 34 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 55 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS33566- Registry name
- KUB-FIBER-01
- Registrant
- Knoxville Utilities Board
- Abuse contact
- noc@kub.org
- Registered
- 2012-07-24
- Last changed
- 2026-01-28
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Knoxville Utilities Board AS33566
- Also known as
- KUB
- Network type
- Cable/DSL/ISP
- Scope
- North America
- Traffic ratio
- Mostly Inbound
- Peering policy
- Selective
- IRR as-set
AS-KUBFIBER- Present at
- 2 exchanges
- Website
- https://www.kub.org
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
- 0% valid · 0 valid, 87 with no ROA
- ROAs
- 1 authorising AS33566
- ASPA
- no ASPA record
- IRR
- 95% registered · 83 of 87 announcements
- Route objects
- 5 naming AS33566
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: 442 networks and 1,784 prefixes, as published 2026-10-19. 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