Autonomous system
AS13351 B-U-C
Unclassified ARIN
Summary
Barbourville Utility Commission
isp telecom government
One IPv4 prefix and twenty-nine IPv6 ones, whose sizes climb by doubling.
What it's used for
- A municipal utility commission running an internet service in Kentucky. 4,096 addresses in the single IPv4 prefix
23.252.128.0/20, five observed BGP neighbours, and twenty-nine IPv6 prefixes.
Notable
- The IPv6 announcements begin
2604:5cc0::/46,2604:5cc0:4::/48,2604:5cc0:5::/48,2604:5cc0:6::/47,2604:5cc0:8::/45and continue widening: /44, /43, /42, /41, /40. - The block is netname
BARBOURVILLE-UTILITY, registered to the utility commission. - A sampled name reads
user-23-252-139-254.barbourville.com. - First observed in the routing archive in January 2001.
Interesting
- That ladder of doubling prefix sizes is what a tool produces when it converts an address range into the smallest set of aligned blocks that covers it. Each rung is the largest block that fits at that point in the range. The network is announcing every rung individually instead of the one covering block that contains them all.
- Twenty-nine routes where one would do is twenty-nine entries in every router on the internet that accepts them. The covering allocation is almost certainly a single assignment.
- A town's electricity and water authority operating an internet service is a pattern in places where the incumbent carrier never built out. The utility already had the poles, the right of way and the billing relationship with every household.
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 1 prefixes · 4.10K addresses IPv6 29 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 30 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13351- Registry name
- B-U-C
- Registrant
- Barbourville Utility Commission
- Abuse contact
- jasonv@barbourville.com
- Registered
- 1999-05-19
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 22 with no ROA
- ROAs
- 0 authorising AS13351
- ASPA
- no ASPA record
- IRR
- 100% registered · 22 of 22 announcements
- Route objects
- 23 naming AS13351
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