It contains Engishiki Hyobusho Shokoku Ekidenma-jo, which describes names of 402 shukueki (post town, relay station, stage) and the number of ekiba and tenma horses (horses for transportation of official travellers and commodities) that should be stationed.
その中の延喜式兵部省諸国駅伝馬条には五畿七道の402ヶ所にのぼる宿駅の名称と備えるべき駅馬や伝馬の数が記載されている。