AS13781 — ENERGYNET

AS13781 announces 18 IPv4 prefixes covering 24,320 addresses and 1 IPv6 prefixes.

About this network

An electric utility selling internet access, with reverse names built two structurally different ways.

What it's used for

• A municipal electric utility running a broadband network. 24,320 addresses across 18 IPv4 prefixes, the IPv6 block 2606:6dc0::/32, and nine observed BGP neighbours.

Notable

• Most addresses answer as 255-231-64-38.hesenergy.net, all four octets reversed into one label.
• Addresses in one block answer as 255-219.8.8.hesenergy.net instead, with a two-octet label sitting under a subzone that keeps the other two octets in forward order.
• Blocks come from three different carriers as well as the utility itself.
• 66.255.240.0/21 is netname 66-255-240-0-20 and 50.30.116.0/22 is 50-30-112-0-20, both naming a larger parent than the block they cover.
• Netname CENTURYLINK-LEGACY-QWEST-INET-8 appears again here, with a different counter.

Interesting

• The two reverse schemes are not a formatting difference but a structural one. One puts the whole address in a single label; the other delegates a subzone per parent block and names only what is left. Both live in the same domain, under one operator, at the same time.
• A utility whose domain name says energy, selling connectivity over its own poles, is the municipal broadband model. The address space came from whoever would sell it, which is why four sources appear.
• Netnames naming the parent rather than the assignment recur across this range, and always make the registry claim a wider delegation than exists.

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

Announced prefixes

• 8.8.216.0/21
• 23.151.24.0/24
• 38.64.224.0/20
• 38.129.112.0/20
• 50.30.116.0/22
• 50.30.122.0/23
• 50.30.124.0/22
• 63.151.116.0/23
• 63.238.109.0/24
• 63.238.110.0/24
• 66.9.48.0/20
• 66.255.240.0/21
• 66.255.248.0/22
• 66.255.252.0/24
• 66.255.255.0/24
• 162.222.24.0/22
• 163.123.178.0/23
• 216.206.128.0/22
• 2606:6dc0::/32

Upstream networks

• AS6939 Hurricane Electric LLC
• AS1299 Arelion Sweden AB
• AS6461 Zayo Bandwidth
• AS3356 Level 3 Parent, LLC
• AS40749 CLARKSVILLE DEPARTMENT OF ELECTRICITY

Downstream networks

• AS31867 Schwartz Networks Limited Liability Company
• AS14749 Russellville Electric Plant Board
• AS401325 Logan Aluminum Inc.

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS31867 Schwartz Networks Limited Liability Company
• AS1299 Arelion Sweden AB
• AS6461 Zayo Bandwidth
• AS14749 Russellville Electric Plant Board
• AS3356 Level 3 Parent, LLC
• AS40749 CLARKSVILLE DEPARTMENT OF ELECTRICITY
• AS401325 Logan Aluminum Inc.

Routing security

• RPKI: 19 valid, 0 invalid and 2 not-found announcements; 20 ROAs.
• ASPA: 5 authorised providers.
• IRR: 100% of announcements registered; 24 route objects.
• Listed in as-sets: AS-HURRICANE, AS-HURRICANEV6, AS-IRIS-CUSTOMERS, AS-RIS-RRC25, AS-TRANSROUTE-SPEC, AS-WINDSTREAM-CUST, AS13781:AS-CONE, AS393444:AS-CUSTOMERS, AS40749:AS-CUSTOMERS.