Department of Energy National Energy Technology Laboratory — IP ranges & network footprint

IP Ranges (2)

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CIDR	Org name	Registry	Status	Confidence
199.249.243.0 – 199.249.245.255	Department of Energy National Energy Technology Laboratory	ARIN	DIRECT ALLOCATION	● low
204.154.136.0 – 204.154.140.255	Department of Energy National Energy Technology Laboratory	ARIN	DIRECT ALLOCATION	● low

Domains hosted in this network

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doe.gov

Possibly related to this organisation

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Same name family

Separately-registered clusters whose names share “Department of Energy” — often per-country or per-system registrations of the same brand, occasionally a different organisation sharing the name. Not counted in this organisation's own footprint.

DEPARTMENT-OF-ENERGY-CLIMATE 3 blocks
Department of Energy and Public Works 2 blocks

Sub-allocations under carriers

IP blocks an ISP reassigned to a similarly-named customer — decoded from the ISP's own naming convention, not a direct registration.

DEPARTMENTOFENERGY sub-allocation
DEPARTMENT-FOR-ENERGY-SECURITY-NET-ZERO via Virgin Media Limited sub-allocation

NIC Handles

IRDSD-1-Z MITCH968-ARIN NOC12400-ARIN NOC12400-ARIN NOC12400-ARIN NOC12400-ARIN

Netblocks	2 · 2,048 IPv4 addresses
All fragments	7 blocks across 3 clusters
Cluster ID	215800216
Registry	ARIN
Customers	find customers using this network →

Attribution	BGP parent (inherited)
Shared handles	clustered on 6 shared RIR contact/maintainer handles
Registry names	1 distinct registrant name across these blocks
full provenance (JSON) → · how attribution works · report an issue