CurrentRegionFinderService::getRegion

public function getRegion(): ?string
{
	$result = null;

	if (Loader::includeModule('bitrix24'))
	{
		$licensePrefix = CBitrix24::getLicensePrefix();
		if ($licensePrefix !== false)
		{
			$result = (string)$licensePrefix;
		}
	}
	elseif (Loader::includeModule('intranet'))
	{
		$result = CIntranetUtils::getPortalZone();
	}
	else
	{
		$result = LANGUAGE_ID;
	}

	return $result;
}