View

If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	158.81.153.0/24	NRG Energy, Inc.
	158.81.160.0/24	NRG Energy, Inc.
	158.81.168.0/24	NRG Energy, Inc.
	158.81.208.0/23	NRG Energy, Inc.
	158.81.210.0/23	NRG Energy, Inc.
	158.81.251.0/24	NRG Energy, Inc.
	158.81.252.0/24	NRG Energy, Inc.

---

Network Policy

Click here to learn more about what this graph means and what makes up a network policy Global Aggregation Policy silly_ishizaka Policy quizzical_bardeen Policy eager_wozniak Policy ecstatic_bhabha

Chart Display Options

Display links using non straight lines

Prefixes in selected policy

Load all prefixes in policy

---

How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS46887	Crown Castle Fiber LLC	✔	✘
	AS6461	Zayo Bandwidth	✔	✘

---

Peers

	ASN	Description	IPv4	IPv6
	AS46887	Crown Castle Fiber LLC	✔	✘
	AS6461	Zayo Bandwidth	✔	✘

ASHandle:       AS20404
OrgID:          NE-29
ASName:         AS20404
ASNumber:       20404
RegDate:        2001-05-03
Updated:        2013-03-07
Source:         ARIN



OrgID:          NE-29
OrgName:        NRG Energy, Inc.
CanAllocate:    
Street:         910 Louisiana Street
City:           Houston
State/Prov:     TX
Country:        US
PostalCode:     77002
RegDate:        2013-02-22
Updated:        2022-04-19
OrgAdminHandle: NETWO3117-ARIN
OrgTechHandle:  NETWO3117-ARIN
OrgAbuseHandle: NETWO3117-ARIN
OrgNOCHandle:   NETWO3117-ARIN
Source:         ARIN





OrgAdminHandle:       NETWO3117-ARIN
OrgAdminName:          Network Services
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        NETWO3117-ARIN
OrgTechName:           Network Services
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       NETWO3117-ARIN
OrgAbuseName:          Network Services
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         NETWO3117-ARIN
OrgNOCName:            Network Services
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-02-09T03:25:02Z UTC

---

Member of the following AS-SETs

-	Member	ASN Count
RIPE	as35280:as-defense	506
RADB	as-ccf	1506
RADB	as-ctbc-customers10	50
RADB	as-defense	494
RIPE	as35280:as-f5	6917
RIPE	as-f5	6917
RADB	as-ccf-test	1461
RIPE	as-gblx	965