FACTBOX-Countries affected by Russia-Ukraine gas row

(Reuters) - Ukraine's state energy company Naftogaz said on Wednesday that all Russian gas supplies to Europe via Ukrainian territory had halted at 5:44 British time in a pricing dispute.

Following are summaries of the gas supply situation in European countries affected by the action.

AUSTRIA -- About 60 percent of gas for domestic use from Russia via Ukraine*.

Gas flows stopped on January 7.

Oil and gas group OMV was drawing on reserves, domestic production and other imports to guarantee supply.

The company has about 1.75 billion cubic metres of gas in storage, enough to supply Austrian household demand for three months during the winter.

GERMANY -- About 42 percent of gas for domestic use from Russia via Ukraine*.

E.ON Ruhrgas said gas shipments to Europe via Ukraine had been massively reduced since early on Tuesday and expected gas transit into Germany via Czech Waidhaus border point to stop entirely during the day.

Energy firms warned of gas shortages if the dispute lasted much longer and sub-zero temperatures endured.