Home ASN LookupAS10953

AS10953 CEG - CONSTELLATION ENERGY GENERATION, LLC

🇺🇸

ARINassigned

Announced Prefixes (BGP)

32total

32 IPv40 IPv6

IPv4 Addresses

Allocated (RIR)16,384

Announced (BGP)8,192

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)0

Prefix Limit (IPv4)

100

Prefix Limit (IPv6)

Country

🇺🇸 US

RIR

ARIN

Status

assigned

Allocated

1998-02-10

Announced Prefixes

(BGP)32

Prefix	RPKI	IRR	Last Seen
159.214.192.0/24	No ROA	-	2026-10-11
159.214.193.0/24	No ROA	-	2026-10-11
159.214.194.0/24	No ROA	-	2026-10-11
159.214.195.0/24	No ROA	-	2026-10-11
159.214.196.0/24	No ROA	-	2026-10-11
159.214.197.0/24	No ROA	-	2026-10-11
159.214.198.0/24	No ROA	-	2026-10-11
159.214.199.0/24	No ROA	-	2026-10-11
159.214.200.0/24	No ROA	-	2026-10-11
159.214.201.0/24	No ROA	-	2026-10-11

1-10 of 32

1 / 4

Allocated Prefixes

(RIR)1

Prefix	Country	RIR	Status
159.214.192.0/18	🇺🇸 US	ARIN	allocated

All 32 announced prefixes of AS10953 →

BGP Neighbours

(seen in AS paths)

Upstreams (2)

Networks AS10953 hands its own prefixes to: transit providers, or peers at an exchange.

AS3356Level 3 Parent18
AS1321Verizon Business14

Transfer History

Registry transfers of AS10953 between organisations.

AS10953M&A · 2024-01-11
Exelon Corporation
🇺🇸 US ARIN
→
CONSTELLATION ENERGY GENERATION, LLC
🇺🇸 US ARIN

Date	Resource	From	To	Type
2024-01-11	AS10953	Exelon Corporation 🇺🇸 US ARIN	CONSTELLATION ENERGY GENERATION, LLC 🇺🇸 US ARIN	M&A

ASPA

No ASPA

External Links

ARIN Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS10953 should publish an ASPA object
IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/10953

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/10953" | jq