FACTBOX - 18 countries affected by Russia-Ukraine gas row

(Reuters) - Russian gas flows via Ukraine shut down completely on Wednesday, hitting 18 countries ranging from large European Union members such as Germany to small ex Soviet Moldova.

AUSTRIA - About 60 pct of gas for domestic use from Russia*

Gas flows stopped on January 7.

No rationing of supply to Austrian firms before next Monday.

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 pct of gas for domestic use from Russia*

German energy groups E.ON AG and Wingas are relying on gas stores and a transit route via Poland. Gas shipments to Europe via Ukraine have been massively reduced since early on Tuesday, and no Russian gas has arrived into Germany via Czech Waidhaus border point for a second day.

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

TURKEY -- About 67 pct of gas for domestic use from Russia*

Russian gas supplies from a western pipeline passing through Ukraine were cut on Tuesday. The country has raised supplies of Russian gas delivered via a pipeline under the Black Sea. Gazprom's Blue Stream pipeline to Turkey is working at full capacity of 45 million cubic metres (mcm).

GREECE -- About 82 pct of gas for domestic use from Russia*

All Russian gas supplies via Ukraine to Greece were halted on Tuesday. Turkey's gas exports to Greece were below the contract level on Wednesday with low pressure on the pipeline.

ITALY -- About 28 pct of gas for domestic use from Russia*

Russian gas imports via the TAG pipeline were substantially interrupted from 1 a.m. on Wednesday, with supplies reduced by 90 percent. Italy has tapped its gas reserves, which are around 5.1 bcm.

FRANCE -- About 24 pct of gas for domestic use from Russia*