AS55102 — NRG-NS-2 - NRG Energy, Inc.

AS55102 announces 8 IPv4 prefixes covering 4,608 addresses and 0 IPv6 prefixes.

About this network

NRG-NS-2 is operated by NRG Energy, Inc.

What it's used for

• The address space carries internal corporate infrastructure, as indicated by netnames RRI-NET and RRIHOUSTON registered to NRG Energy, Inc.
• The AS announces 4096 IPv4 addresses across 7 prefixes with only 3 observed neighbours, a ratio characteristic of an internal corporate estate rather than a transit or access network.
• Traffic from this AS consists of office workers, internal systems, and business endpoints for NRG Energy, a North American energy and home services company headquartered in Houston, Texas.

Notable

• All registrants in the RDAP data agree with the announcer, consistently listing NRG Energy, Inc. for prefixes including 158.81.136.0/21 and 158.81.192.0/23.
• The address inventory is finely subdivided into multiple /24 and /23 blocks within the 158.81.128.0/18 range, reflecting site-by-site segmentation typical of a large corporate network.

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

Announced prefixes

• 158.81.128.0/24
• 158.81.136.0/21
• 158.81.150.0/24
• 158.81.152.0/24
• 158.81.154.0/23
• 158.81.192.0/23
• 158.81.199.0/24
• 158.81.200.0/23

Upstream networks

• AS6461 Zayo Bandwidth
• AS33132 Crown Castle Fiber LLC
• AS25956 Logix

Adjacent networks

• AS6461 Zayo Bandwidth
• AS33132 Crown Castle Fiber LLC
• AS25956 Logix

Routing security

• RPKI: 0 valid, 0 invalid and 9 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 33% of announcements registered; 5 route objects.
• Listed in as-sets: AS-DEFENSE, AS-F5, AS-LOGIXFIBER, AS-PROLE, AS33132:AS-CUSTOMERS, AS35280:AS-DEFENSE, AS35280:AS-F5.