Click on the Profile in the left margin, in the Business Summary you'll see, ..."Its Forest Products segment owns and manages approximately 200,000 acres of forestlands and development properties primarily in the United States."
Heaven knows the last time that profile was updated.
IP sold off all their US land in past few years, with the exception of some high-priced tracts scattered across the SE (the reason they are priced so high is that the were once woodyards and IP has a high cost basis in them; they are next to railroads so are holding them for industrial sales.)
Check out their annual report and it only states they own land in Brazil.
In Brazil, International Paper owns and controls more than 1.2 million acres (almost 500,000 ha) of forestland. None of this land is located in the ecologically sensitive Amazon Rainforest. Our entire forest operation in Brazil is third party certified in accordance with ISO 14001 Standard and our Brazilian forestlands are certified to the Brazilian Forestry Certification system, known as Cerflor. Cerflor has applied for and received approval for labeling using the internationally recognized PEFC standard.
In Russia, International Paper’s Svetogorsk mill and operations were the country’s first in the paper and forests products industry to receive ISO 14001 certification for their environmental management and procurement system. Russia laws generally prohibits private forest ownership causing companies like International Paper to lease concessions directly from the government. Our company has more than 500,000 acres (more than 200,000 ha) of forest concessions in Russia near the Svetogorsk mill.
International Paper owns less than 300,000 acres (121,4,000 ha) of U. S. forestland. In the United States, about 60 percent of productive forests are privately owned, and more than 80 percent of these forests are owned by about 10 million families. Many of the productive forests in the United States, particularly in the Southeast, have been established on land that was cleared for agriculture and human settlement beginning in the 1600’s. In the mid-20th century, the government provided incentives to property owners to plant land with trees. This region provides an important source of fiber for America. Likewise, the need for this fiber provides an important reason for the continued stewardship of these forests. This is from the IP web site.