AS4155 USDA-1

USDA-1 belongs to the United States Department of Agriculture, the federal

executive department responsible for food, agriculture, rural development, and

forestry policy.

What it's used for

• Enterprise networking for USDA and its agencies, which include the Forest Service, the Agricultural Research Service, the Farm Service Agency, and the Natural Resources Conservation Service.
• Connectivity for a highly distributed footprint: USDA runs field and service offices in essentially every US county, plus research stations and labs.

Notable

• This is government address space, not consumer space. Traffic from it generally represents federal staff, field offices, and agency systems rather than residential users.
• USDA holds a very large legacy IPv4 allocation for a civilian agency, including the 199.128.0.0/11 block, which alone is over two million addresses. The total announced footprint runs to several million addresses.

Interesting

• The size of the allocation is a fingerprint of early-internet federal networking, when agencies could request address space far in excess of what a modern organization of the same size would ever receive.